| Entries |
| Document | Title | Date |
|---|
| 20080197788 | Programmable Underwater Lighting System - The present disclosure relates to a programmable underwater lighting system for pools and spas. A plurality of underwater lights, each having a plurality of LEDs for producing light of various colors, a microprocessor for controlling the plurality of LEDs, and a memory in communication with the microprocessor containing one or more stored control programs, allow for the generation of various lighting effects in a pool or spa. A central controller is provided in communication with the plurality of underwater lights, and allows a user to define or select a desired lighting effect (such as a sequence, a fading effect, a “moving” color pattern, etc.) using a display and a keyboard. Optionally, a handheld remote control could be provided, in wireless communication with the central controller, for allowing a user to remotely control the plurality of lighting fixtures. When a desired lighting effect is defined by a user, the central controller transmits an instruction to each of the plurality of underwater lights instructing each light to execute a specific stored control program in its memory to produce the desired lighting effect. Each of the lights could be in communication with the central controller using a power line and an associated power line carrier data protocol, and each light could be provided with a thermal management system for monitoring the operating temperature of the light and automatically adjusting the brightness of the light to prevent dangerous temperatures. | 08-21-2008 |
| 20080203939 | Method and Arrangement for Monitoring a Gas Discharge Lamp - The invention relates to a method and an arrangement ( | 08-28-2008 |
| 20080203940 | Dim Control Circuit Dimming Method and System - A dim control circuit dimming method and system with a dimming ballast dim control circuit ( | 08-28-2008 |
| 20080203941 | IMAGE DISPLAY APPARATUS AND METHOD OF CONTROLLING OVER-CURRENT THEREFOR - An image display apparatus includes: a lighting unit which includes a lamp unit, and illuminates light onto a display screen; a power supply unit which supplies electric power to drive the lamp unit in the lighting unit; a main circuit unit which outputs a brightness control signal to control brightness of the lighting unit, and controls the power supply unit; and a constant voltage generator which is provided between the main circuit unit and the power supply unit, and controls magnitude of the brightness control signal which is output from the main circuit unit, to generate a constant voltage, wherein, by detecting over-current flowing in the lamp unit, the main circuit unit outputs the brightness control signal to apply a corresponding voltage to the lamp unit according to a form of the over-current, or activates the constant voltage generator so that the brightness control signal can be controlled by the constant voltage generator. | 08-28-2008 |
| 20080203942 | Current Driver Circuit and Method of Operation Therefor - A current driver circuit comprises a digital circuitry having a current adjustment function and operably coupled to a current driver for providing a current to a current consuming device. The digital circuitry comprises, or is operably coupled to, a function arranged to determine a load impedance associated with the current consuming device. The current adjustment function varies a current limit applied to the current driver in response to a variation in the load impedance. | 08-28-2008 |
| 20080203943 | Lighting Device - In a lighting device equipped with three light sources supplying red, green and blue light respectively, the color and/or intensity of the light generated by the three light sources together can be adjusted by means of adjustment points. The colors corresponding to the adjustment points are chosen so that for a fraction of the adjustment points the color difference calculated in the CIELAB space between the colors corresponding to adjacent adjustment points is the same. An inexperienced user can easily find a desired color setting since the change in color perceived by the user is the same for all the adjustment points belonging to said fraction. | 08-28-2008 |
| 20080224630 | DIMMING CIRCUIT FOR CONTROLLING ELECTRICAL POWER - A dimming circuit includes an isolated DC voltage source that is selectively coupled to a switch through which power is supplied from a source to a load. In a disclosed example, the switch comprises two MOSFETs. The isolated DC voltage source is selectively coupled directly to the gate and source of the MOSFETs to set them into an operative state for providing power to the load. A controller controls another switch that is operative to selectively control when the isolated DC voltage source is coupled to the switch. | 09-18-2008 |
| 20080224631 | Color variations in a dimmable lighting device with stable color temperature light sources - A method and system allow a lighting device having light sources with multiple color temperatures to vary a color temperature of the lighting device in response to changing dimming levels. The light sources are non-incandescent light sources, such as light emitting diodes and/or gas-discharge lights. A dimmer circuit provides a dimming signal that indicates a selected dimming level. The lighting device includes a light source driver and a light source driver controller that cooperate to vary drive currents to the light sources in response to the selected dimming level. By varying the drive currents in different relative amounts, the color temperature of the lighting device changes in response to dimming level changes. In at least one embodiment, changes in the color temperature of the lighting device in response to the dimming level changes simulates the color temperature changes of an incandescent light source. | 09-18-2008 |
| 20080224632 | CONSTANT CURRENT CIRCUIT AND LIGHT EMITTING DIODE DRIVE CIRCUIT - A constant current generator which includes a first transistor to supply current in accordance with a control signal, a second transistor that is a MOS transistor having an equal impurity type to the first transistor. To supply current to a load in accordance with the control signal, a gate and source of the second transistor are connected to a gate and source of the first transistor, respectively. Also, there is a voltage adjustor to adjust drain voltage of the first transistor in accordance with drain voltage of the second transistor, a constant current generation circuit including a first current source to supply first current to the first transistor through the voltage adjustor, and a level shifter to shift a voltage at a connection node of the voltage adjustor and the constant current generation circuit, output a shifted voltage to each gate of the first and second transistors. | 09-18-2008 |
| 20080231209 | POWER SUPPLY DEVICE, AND LED DEVICE AND ELECTRONIC DEVICE USING SAME - A power supply device includes a step-up circuit configured to supply a driving voltage to a load, a comparison circuit configured to compare an output voltage from the load with a reference voltage, and a control circuit configured to control the step-up circuit based on a comparison result generated by the comparison circuit. The step-up circuit includes multiple operation modes each outputting a given voltage not lower than a power source voltage. The control circuit controls the step-up circuit to operate in one of the multiple operation modes. The control circuit maintains a current operation mode of the step-up circuit until the output voltage from the load decrease to below the reference voltage and, when the output voltage from the load is less than the reference voltage, switches the operation mode to another operation mode to output a voltage higher than a voltage output in the current operation mode. | 09-25-2008 |
| 20080238334 | HID LAMP BALLAST CIRCUIT - A ballast circuit operable to drive a high intensity discharge lamp in accordance with an embodiment of the present applications includes an energy conversion circuit operable to convert an input voltage into a bus voltage and to provide the bus voltage to a DC bus, a first half bridge connected across the DC bus and operable to control an output voltage supplied to the lamp, a control circuit operable to control the half bridge such that a desired output voltage is provided to the lamp, a series inductor connected in series between the half bridge and the lamp; and a parallel capacitor resistor connected across the lamp. The control circuit operates the half bridge at a high frequency for a set period of time such that a high voltage is built up across the parallel resistor, and then reduces the frequency of the half bridge until it approaches a resonance frequency which ignites the lamp. | 10-02-2008 |
| 20080246414 | INDUCTIVE LOAD SENSOR FOR DIMMER CIRCUIT - A lighting control circuit includes a dimmer circuit which is provided for an electrical outlet. An inductive load detection circuit is provided for identifying the presence of an inductive load in the electrical outlet. When an inductive load is sensed, dimming of the power directed to the electrical outlet is stopped such that full power is delivered to prevent damage to the load. The inductive load detection circuit identifies the presence of an induction load by sensing voltage spikes. In one embodiment, diodes which have a high impedance at lower voltages, but are largely conductive at higher voltages are utilized to achieve this control. | 10-09-2008 |
| 20080252233 | Universal Line Voltage Dimming Method and System - A universal line voltage dimming method and system, with a control circuit for an electronic ballast including an on-time converter ( | 10-16-2008 |
| 20080258646 | Device for Lighting a Room - The present invention deals with a lighting control system suitable for small system configurations such as in offices and conference rooms. One or more luminaires are communicatively connected in an addressable digital bus system as well as to a unit including a processing means. In connection with installation of the device, the processing means is programmed to automatically assign a digital address to each luminaire and further to automatically identify a spatial position of each luminaire by use of light measuring cells. A relationship between the digital address and the spatial position of each luminaire is thereby provided. Furthermore, the device supports the functionality of installing pre-programmed lighting scenes suitable for the determined configuration of the luminaires as well as other factors such as the position of a window. | 10-23-2008 |
| 20080258647 | Dimming Circuit for Led Lighting Device With Means for Holding Triac in Conduction - The invention disclosed herein is a dynamic dummy load to allow a phase control dimmer to be used with LED lighting. The invention includes providing a dynamic dummy load to provide a load to the dimmer when the LED electronics do not provide sufficient load due to start up issues or ringing in the circuit, the dynamic dummy load providing a reduced flow of current when the LED and its converter electronics provide sufficient current draw from the dimmer. The system generally includes a power source electrically connected to a phase control dimmer, the phase control dimmer electrically connected to converter circuitry to convert the AC power output of the dimmer to DC power output for powering the LED lighting, a dynamic dummy load electrically connected in parallel with the converter circuitry, the dummy load varying its current draw in response to operation of the converter circuitry. | 10-23-2008 |
| 20080258648 | Adaptive Drive for Dielectric Barrier Discharge (DBD) Lamp - The present invention relates to an adaptive driver for driving a gas discharge lamp and a method for operating a gas discharge lamp driven by an adaptive driver, especially a capacitive gas discharge lamp and more especially a dielectric barrier discharge (DBD) lamp in a permanent optimized mode comprising the steps: measuring, sensing, and/or detecting a signal representing the key values of the output of the driver (current, power, voltage, frequency), calculating at least one actual reference value for the quality of the discharge of said lamp, comparing said actual reference value to at least one predefined value for an optimized operation mode of said lamp, and adjusting a power supply according to the result of said comparing. | 10-23-2008 |
| 20080258649 | INTERCHANGEABLE LED BULBS - Disclosed are circuits that allow LED bulbs to be replaced regardless of color or construction of the LED element. When used for an LED light string, replacing an LED bulb does not affect the operation of the entire string. When used for other illumination purpose, for example, room light, the bulbs are interchangeable because they have the same operating voltage and current. A standardized input impedance is selected for all of the LED bulbs regardless of construction and color. A resistor circuit is used to create the standardized input impedance while optimizing the operating parameters of the LED element. The resistor circuit includes a bypass element so that if a LED element burns open, a series wired LED string will not go dark. This eliminates the necessity for parallel connected LED bulbs and allows enjoyment of other advantages and economies of series wired LED strings. | 10-23-2008 |
| 20080258650 | Multiple Location Load Control System - A multiple location load control system comprises a main device and remote devices, which do not require neutral connections, but allow for visual and audible feedback at the main device and the remote devices. The main device and the remote devices are adapted to be coupled in series electrical connection between an AC power source and an electrical load, and to be further coupled together via an accessory wiring. The remote devices can be wired on the line side and the load side of the load control system, such that the main device is wired “in the middle” of the load control system. The main device is operable to enable a charging path to allow the remote devices to charge power supplies through the accessory wiring during a first time period of a half-cycle of the AC power source. The main device and the remote devices are operable to communicate with each other via the accessory wiring during a second time period of the half-cycle. | 10-23-2008 |
| 20080258651 | METHOD AND SYSTEM FOR OPEN LAMP PROTECTION - A detector circuit monitors the phase relationship between the lamp voltage and the excitation voltage, and if one or more conditions are met, triggers the open lamp protection process in a discharge lamp system. The detection circuit can be incorporated into a lamp voltage feedback circuit and implemented on the integrated circuit level with less cost and circuit complexity. | 10-23-2008 |
| 20080265795 | Circuit-Arrangement for Modulating an Led and Method for Operating Same - To achieve high modulation frequencies when modulating an LED, a circuit-arrangement for modulating at least one LED comprises a modulation-circuit ( | 10-30-2008 |
| 20080265796 | Light management system device and method - A lighting control system is disclosed. The lighting control system is electrically coupled to a load circuit for controlling indoor and/or outdoor lighting. The lighting control system includes a control module with a night light for providing low-level night light illumination and one or more sensors for operatively controlling the indoor and/or outdoor lighting and the night light in response to measured light levels and/or detected motion. The system is preferably configured to provide low-level night light from the night light when measured light levels and detected motion are below threshold values and to automatically turn on the indoor and/or outdoor lighting and simultaneously turn off the night light when measured light levels and detected motion are above the threshold values | 10-30-2008 |
| 20080272711 | Apparatus and Method for Eliminating Electric Arc - The present invention relates to an apparatus and a method for eliminating electric arc in the field of lighting electronics. Whether or not electric arc is likely to be produced is determined through monitoring the current variation in the lighting circuit loop. If electric arc is likely to be produced, the lighting circuit loop is disconnected for a preset period of time to eliminate the voltage condition for producing electric arc so as to eliminate electric arc. Beyond the preset time when the lighting circuit loop is disconnected, the lighting circuit loop is connected normally, and works normally and unaffectedly. | 11-06-2008 |
| 20080272712 | Variable Color Light Emitting Device and Method for Controlling the Same - The present invention relates to a variable color light emitting device ( | 11-06-2008 |
| 20080272713 | Driving Circuit of Organic Light Emitting Diode Display Panel and Discharging Method Using the Same - There is provided a driving circuit using an internal diode instead of a zener diode and a discharging method using the same capable of replacing a driving circuit including an external zener diode, thereby reducing costs. | 11-06-2008 |
| 20080278094 | Method for Driving a Lamp in a Lighting System and a Control Apparatus for Driving Such Lamp - A method and a control apparatus for driving a lamp ( | 11-13-2008 |
| 20080278095 | COMPACT FLUORESCENT LAMP WITH OUTER ENVELOPE AND METHOD FOR MANUFACTURING - A compact fluorescent lamp comprises a discharge tube arrangement with at least one discharge tube. The tube is formed of glass, encloses a discharge volume filled with a discharge gas and has a fluorescent phosphor coating disposed on the inner surface of the tube. The tube forms a continuous arc path and is provided with electrodes disposed at each end of the arc path. The lamp also comprises a ballast circuit mounted on a printed circuit board, which is oriented in a plane substantially parallel to the principal axis of the lamp. The ballast circuit is connected to the electrodes by lead-in wires and to a supply voltage by lead-out wires and controls the current in the tube. A bulb shaped outer envelope has a substantially spherical portion enclosing at least a part of the tube arrangement and an elongated end portion enclosing at least the ballast circuit. The end portion of the outer envelope having an open end on a base side is closed and terminated by a closing means of a material compatible with the material of the outer envelope. The ballast circuit and the discharge tube arrangement are held within the outer envelope and relative to each other in a predetermined position by a holding and protecting shield being oriented in a plane substantially perpendicular to the principal axis of the lamp and comprising a receiving and fixing portion for the discharge tube and the printed circuit board of the ballast circuit. | 11-13-2008 |
| 20080278096 | Configurable Ballast - A configurable ballast ( | 11-13-2008 |
| 20080284348 | Lighting Device with User Interface for Light Control - The present invention relates to a lighting system ( | 11-20-2008 |
| 20080284349 | BACKLIGHT UNITS AND DISPLAY DEVICES - A backlight unit comprising a boost circuit and a backlight element. The boost circuit is coupled to a voltage source and controlled by a PWM signal and a switch signal. When the backlight unit operates in a normal mode, the boost circuit is supplied by the voltage source according to the PWM signal and the switch signal to drive the backlight element to emit light. When the backlight unit operates in a standby mode, the voltage source stops supplying the boost circuit according to the PWM signal and the switch signal, and the backlight element stops emitting light. | 11-20-2008 |
| 20080284350 | BULB TYPE DETECTOR FOR DIMMER CIRCUIT AND INVENTIVE RESISTANCE AND SHORT CIRCUIT DETECTION - A bulb detection circuit is associated with a dimmer circuit for a lighting system. The bulb detection circuit is operable to detect whether an incandescent or a fluorescent bulb is received in an electric light socket. The socket may be hardwired to the circuit, or could be plugged into an electrical outlet. The bulb detection circuit may utilize a separately inventive method of measuring the resistance by looking at an RC circuit time constant. Further, the bulb detection circuit may utilize a separately inventive method of identifying a short circuit by again looking at the RC circuit time constant. | 11-20-2008 |
| 20080284351 | Ignition Module for Gas Discharge Lamp - The present invention relates to an ignition module for a gas discharge lamp, said ignition module comprising: a first module for generating a first series of pulse from a low frequency driving signal, a second module for generating a second series of pulse from a high frequency driving signal, and a superposing and boosting module for boosting module for superposing and increasing said first series of pulse and said second series of pulse so as to generate an output pulse intended to break down the gas in said gas discharge lamp. Via this invention, a high effective OCV can be easily obtained without increasing the DCBUS, and the ignition of the gas discharge lamp is improved. | 11-20-2008 |
| 20080284352 | Control of Delivery of Current Through One or More Discharge Lamps - Control of delivery of current through one or more discharge lamps. Methods include alternately switching on and off switching elements that control a fluorescent lamp, in response to receiving input, until the brightness of the lamp decreases to a threshold. Further, methods include providing control signals at complementary duty cycles to further decrease the brightness and alternating the duty cycles of the signals applied to the filaments of the fluorescent lamp. | 11-20-2008 |
| 20080297065 | DUAL MODE SEARCHLIGHT DIMMING CONTROLLER SYSTEMS AND METHODS - A solid state microprocessor or digital signal processor (DSP) for dual mode illumination and dimming into modern aerospace searchlights. The system is a universal dimming platform with “smart functions” that include and are not limited to multiple light intensity linearization curves, analog and/or digital input dimming interface, built-in tests and health monitoring, synchronized dual mode light output with canopy position, light driver redundancy, lamp life reporting, and controlled switching with improved EMI. With real-time monitoring of the system parameters it monitors the lights proper operation and failures which can be a concern for flight-critical lighting. | 12-04-2008 |
| 20080297066 | Illumination Device and Method for Controlling an Illumination Device - The present invention relates to a method for controlling an illumination device ( | 12-04-2008 |
| 20080303450 | Method and Circuit for Driving a Gas Discharge Lamp - The invention relates to a method for driving a gas discharge lamp and relates to a lamp driver circuit for driving a gas discharge lamp in accordance with said method. The method comprises supplying a current to the gas discharge lamp, reversing the direction of the current supplied to the gas discharge lamp and, substantially simultaneously, generating a relatively high voltage. The generated high voltage serves to prevent a series of re-ignitions of the gas discharge lamp that may lead to visible flickering of the gas discharge lamp or to extinction of the gas discharge lamp. | 12-11-2008 |
| 20080303451 | RADIO-FREQUENCY DIMMER HAVING A SLIDER CONTROL - A dimmer control operable to adjust a status of a connected electrical lamp in response to a radio frequency control signal received from a remote control device, the dimmer control comprising a communication and control circuit comprising at least a radio frequency transmitter/receiver and an antenna operable to receive a radio frequency signal from the remote control device that includes control information for controlling the status of the electrical lamp; a manual actuator operable to change the on/off status of the electrical lamp; and a slider control operable to change the dimming status of the electrical lamp, wherein the slider control operates to dim the electrical lamp and the communication and control circuit is operable to transmit to the remote control device status information representing the changed status of the electrical lamp, or the setting of the slider control, or both. | 12-11-2008 |
| 20080309251 | DEVICE WITH IMPROVED DISPLAY ILLUMINATION AND METHOD THEREFORE - A device having a display, an illuminator configured to illuminate the display and a multi-way input key configured to control the illuminator upon activation. The illuminator also has a power output, the output level being arranged to be regulated upon activation of the multi-way input key proportional to a physical movement activating the multi-way input key. | 12-18-2008 |
| 20080309252 | Controller of Light Dimmig and Overload Protection - The dimmer controller cart be installed within the structure of a light fixture or freestanding lamp, alternatively the circuit can be installed in a cord. The circuit includes a power shaping circuit for control of the incoming AC power which is then sent through a variable control dimmer to vary the power to the lamp. The wattage through the lamp is monitored and the monitored wattage is sent as an input to the a control IC which uses an outout to control the voltage to the lamp as an overload protection. The circuit is used to control the wattage supplied to & lamp from a minimum non-activating wattage to a maximum a maximum wattage which can for example be 190 W. When the current reaches the maximum wattage, for example 190 W, then the light will exceed protection overload and the circuit will re-start. | 12-18-2008 |
| 20080315786 | Method and Circuit Arrangement For the Operation of a Discharge Lamp - A method and a circuit arrangement for the operation of a discharge lamp, in particular of a high-pressure gas mercury discharge lamp (HID[high intensity discharge]) lamp or a UHP [ultra high performance] lamp, are described, which are used to improve the color rendering index of the light. This is essentially achieved by feeding the lamp current on which current pulses with a suitably adjusted amplitude I | 12-25-2008 |
| 20080315787 | DIMMING ALGORITHMS BASED UPON LIGHT BULB TYPE - A lighting control circuit for dimming a light is provided with different algorithms that are utilized to dim fluorescent and incandescent lights. Some method of identifying the type of light which is to be dimmed, reports to a control for the lighting control circuit, and the appropriate algorithm is then selected and utilized. | 12-25-2008 |
| 20080315788 | OLED DISPLAY WITH AGING AND EFFICIENCY COMPENSATION - A method of compensating for changes in an OLED drive circuit, includes: providing a drive transistor; providing a first voltage source and a first switch; providing an OLED device connected to the drive transistor. Voltages are measured and used to compensate for changes in the OLED drive transistor. | 12-25-2008 |
| 20080315789 | Light emitting diode driving circuit and light emitting diode array device - There is provided an LED driving circuit including: at least one ladder network circuit including: (n+1) number of first branches connected in parallel with one another by n number of first middle junction points between a first junction point and a second junction point, where n denotes an integer satisfying n≧2, (n+1) number of second branches connected in parallel with one another by n number of second middle junction points between the first junction point and the second junction point, the (n+1) number of second branches connected in parallel with the first branches; and n number of middle branches connecting the first and second middle junction points of an identical m sequence to each other, respectively, wherein each of the first and second, and middle branches comprises at least one LED device. | 12-25-2008 |
| 20090001901 | ULTRAVIOLET LAMP SYSTEM AND METHOD FOR CONTROLLING EMITTED UV LIGHT - An ultraviolet lamp assembly and corresponding methods is operable to generate ultraviolet light for irradiating a substrate.. The lamp assembly includes a magnetron, an electrodeless lamp for emitting ultraviolet light when excited by microwave radiation generated from the magnetron, and a power control circuit arrangement configured to control an output power of the microwave radiation generated by the magnetron corresponding to the intensity of ultraviolet light produced by the lamp. A first control loop of the power control circuit is configured to regulate an input current to the magnetron based upon an input current setting associated with a desired intensity of UV light output of the lamp and a second control loop coupled to the first control loop configured to adjust the input current setting used by the first control loop to regulate the input current to the magnetron based upon an input power to the magnetron, which is proportional to the intensity of UV light output from the lamp. | 01-01-2009 |
| 20090001902 | High pressure discharge lamp control method - A system for providing a controllable current to a high intensity discharge lamp is provided. The system includes a current controller that is configured to receive input power and to provide an output current waveform to the high intensity discharge lamp. This current causes a discharge of light from the lamp. The output current waveform includes an absolute value amplitude in each half cycle that is generally constant during a first portion and that which increases non-linearly from the generally constant amplitude to a peak amplitude during a second portion. | 01-01-2009 |
| 20090001903 | Backligth module having detecting circuit and direct current voltage compensation circuit - An exemplary backlight module includes lamps ( | 01-01-2009 |
| 20090001904 | Ignition controller, light source, projector and ignition control method - An ignition controller that controls ignition of a discharge lamp discharging and emitting light between a pair of electrodes provided therein, the controller includes: an ignition device that ignites the discharge lamp, and a controller that controls a drive of the ignition device, in which the controller includes: a pulse applying unit that applies a high pressure pulse to the pair of electrodes by the ignition device, a direct current applying unit for applying a direct current to the pair of electrodes for a first period after applying the high pressure pulse, and an alternating current applying unit for applying a first alternating current to the pair of electrodes for a second period after the first period. | 01-01-2009 |
| 20090009103 | WIRELESS CONTROLLED LIGHT EMITTING ASSEMBLY - A light emitting assembly and a system utilizing a plurality of light emitting assemblies having a plurality of light emitting elements arranged and disposed within a sub-assembly. The assembly also includes a controller in communication with the elements, the controller being capable of receiving wireless signals and/or transmitting wireless signals, the controller also being capable of driving the elements to emit light in response to the wireless signals. The assembly further includes a power source arranged and disposed to provide electrical power to the light emitting elements. A method for providing a light emitting element display is also disclosed. | 01-08-2009 |
| 20090009104 | Step-Up/Down Regulator Circuit and Liquid Crystal Display Device Incorporating It - A step-up/step-down regulator circuit wherein a switch (N | 01-08-2009 |
| 20090009105 | CONTROL DEVICE AND CONTROL METHOD, AND PLANAR LIGHT SOURCE AND CONTROL METHOD OF PLANAR LIGHT SOURCE - A control device for controlling driving of an LED includes: a driving section driving the LED, the driving section being formed including a switching element; a control value obtaining section obtaining a control value of n+m bits; and a controlling section controlling the driving of the LED by the driving section on a basis of the control value of the n+m bits obtained by the control value obtaining section such that a number of times of turning on the switching element in a predetermined period is controlled by a control value of n higher-order bits, an ON time at one of the times of turning on the switching element is controlled by a control value of m lower-order bits, and ON times of the switching element excluding the ON time at the one time of turning on the switching element are a predetermined time. | 01-08-2009 |
| 20090009106 | Circuit for driving light sources using balanced feedback signal - An exemplary circuit ( | 01-08-2009 |
| 20090015175 | Brightness control system for LED lighting devices - The present invention provides a brightness remote control system for LED lighting device. There are two control modes, namely automatic mode and manual mode. At automatic mode, the brightness of the LED lighting device changes as the brightness of the environment changes to maintain preset constant brightness. At manual mode, the brightness of the LED lighting device can be changed instantaneously or at preset time or times. | 01-15-2009 |
| 20090015176 | Laser assisted fluorescent lamp - In this invention a fluorescent lamp is described containing semiconductor laser diodes used to ionize the gases inside the lamp. This avoids the need for a high voltage to cause the gases to ionize sufficiently that current can flow through the lamp. If configured correctly, the use of Mercury vapor to initiate breakdown of the gases can be avoided. Also by regulating the light output of the laser the current flowing through the lamp can be regulated thus avoiding the need for a ballast. | 01-15-2009 |
| 20090021180 | Led with integrated constant current driver - An LED package containing integrated circuitry for matching a power source voltage to the LED operating voltage, LEDs containing such integrated circuitry, systems containing such packages, and methods for matching the source and operating voltages are described. The integrated circuitry typically contains a power converter and a constant current circuit. The LED package may also contain other active or passive components such as pin-outs for integrated or external components, a transformer and rectifier, or a rectifier circuit. External components can include control systems for regulating the LED current level or the properties of light emitted by the LED. Integrating the power supply and current control components into the LED can provide for fabrication of relatively small LEDs using fewer and less device-specific components. | 01-22-2009 |
| 20090021181 | Led module and led lighting unit with a plurality of led modules - In a LED module ( | 01-22-2009 |
| 20090021182 | LED DRIVER CIRCUIT - The present invention relates to a low cost LED driver module comprising a switched-mode power supply (smps) having down-converting characteristics ( | 01-22-2009 |
| 20090021183 | LIGHT-SOURCE MODULE FOR DISPLAY DEVICE AND DISPLAY DEVICE HAVING THE SAME - A light-source module for a display device and a display device having the same, in which the light-source module includes a plurality of light-emitting units, a current difference controller, and a converter. The light-emitting units are connected in parallel between a driving power input terminal and a ground terminal to emit light by the diving power and to output respective feedback control signals. The current difference controller is configured to output a plurality of power control signals according to the respective feedback control signals. The converter is configured to change a current of the driving power provided to the light-emitting units according to the power control signals. The amounts of currents flowing through the light emitting units each having a plurality of light emitting diodes are measured and the levels of voltages applied to the light-emitting units are changed according to the measurement results. Accordingly, a current difference between the light emitting units can be reduced and the brightness uniformity of the light source can be improved. | 01-22-2009 |
| 20090033243 | LED Controller IC Using Only One Pin to Dim and Set a Maximum LED Current - An LED driver IC is described that uses a single pin to both set the maximum current through one or more driven LEDs and variably control the brightness of the LEDs. A single resistor is connected to the control pin of the IC, where the value of the resistor sets the maximum current through the LEDs. A PWM source, outputting a pulse train at a particular duty cycle, is connected to the other end of the resistor, where the duty cycle controls the LED brightness level. When the PWM signal is low (e.g. ground), a sample and hold circuit connects the output of a feedback control voltage to an Imax current source to set a maximum current based on the external resistor value. An inverse of the duty cycle of the PWM controller controls a current Idim that is subtracted from the maximum current Imax set by the resistor. This difference current is used to control drivers for the LEDs. | 02-05-2009 |
| 20090033244 | INTEGRATED CIRCUIT WITH A PREHEAT CONTROL FOR A BALLAST - The present invention provides a ballast with preheat function for fluorescent or compact fluorescent lamps. The lamp is connected in series with an inductor and a capacitor to form a resonant circuit. A first switch and a second switch controlled by control circuit are coupled to the resonant circuit for switching the resonant circuit. A RC circuit is composed of a first resistor and a second resistor connected in series to form a voltage divider, and a capacitor is connected in parallel with second resistor. Switching frequency is voltage dependent. | 02-05-2009 |
| 20090033245 | LIGHT EMITTING DIODE LAMP AND ILLUMINATION SYSTEM - A light emitting diode (LED) lamp electrically connected to a switch is provided. The LED lamp includes a lamp body, an LED array disposed inside the lamp body, and a current control circuit disposed inside the lamp body. The current control circuit is electrically connected between the LED array and the switch. The current control circuit is capable of outputting various driving currents to the LED array according to the number of flashing times of the switch, so as to modulate the intensity of light emitted from the LED array. Since the above-mentioned LED lamp has the built-in current control circuit, users are capable of modulating the intensity of light emitted from the above-mentioned LED lamp by flashing the switch. | 02-05-2009 |
| 20090039799 | BALLASTED LAMP SOCKET FOR A COMPACT FLUORESCENT LAMP - A ballasted lamp socket for a gas discharge lamp, such as a compact fluorescent lamp, is adapted to replace an Edison screw-in lamp socket in a ceiling mounted light fixture, or a table or floor lamp. The ballasted lamp socket comprises a lamp-receiving portion adapted to be coupled to the gas discharge lamp, an enclosure mechanically coupled to the lamp-receiving portion, a dimming ballast circuit electrically coupled to the lamp-receiving portion and housed within the enclosure, and first and second electrical connections. The ballast portion is adapted to receive an AC line voltage and to generate a high-frequency AC voltage for driving the gas discharge lamp and controlling the light intensity of the gas discharge lamp between a high-end intensity and a low-end intensity. The first and second electrical connections are operable to receive the AC line voltage and to provide the AC line voltage to the ballast circuit. | 02-12-2009 |
| 20090051299 | LINEAR REACTOR BALLAST FOR SPORTS LIGHTING FIXTURES - A means and method for increasing use of a light from a high intensity lighting fixture to a target area without an increase in energy use. One aspect increases the electrical efficiency of transmission of electrical power from an electrical power source to the lamp such that for the same cost of electrical energy, more electrical energy is available for production of light. Conversely less electrical energy could be purchased to produce the same amount of light. In another aspect electrical components along the electrical service path can be utilized with increased electrical efficiency towards the same end. | 02-26-2009 |
| 20090058314 | Device and Method for Operating a High-Pressure Discharge Lamp - The invention relates to a device for operating a high-pressure gas discharge lamp (Lp), which is provided with a starting auxiliary electrode (ZE), with a current of alternating polarity. The device comprises a series resonance circuit (L | 03-05-2009 |
| 20090058315 | Control module - An electric light control module comprising: a first interface for connection to a power supply unit; a second interface for connection to a light source unit; a programmable control circuit operable to store a predetermined sequence of two or more instructions, each instruction including one or more individually programmable parameters, and to control the transmission of electrical signals between the first interface and the second interface in accordance with the predetermined sequence thereby controlling the operation of a light source connectable to the second interface, and one or more user input devices capable of manual activation connected to the control circuit to alter at least one of the one or more individually programmable parameters. | 03-05-2009 |
| 20090058316 | Magnetic ballast - Magnetic ballast comprising a covered fairing, case or base with cover, basically rectangular, without limitation to the effects of the present patent, constituted by a ballast or a magnetic reactance (B), a compensating capacitor (C), and both ballast and compensating capacitor are put inside a covered fairing, case or base, forming the same piece, of suitable metallic or plastic material as epoxy resin, polyester or the like. It is important to point out that such material or shape to be used on fairing or case is non-limiting. | 03-05-2009 |
| 20090058317 | LIGHT-EMITTING DIODE LIGHT SOURCE AND LIGHT-EMITTING DIODE LAMP - A light-emitting diode (LED) light source suitable for being electrically connected with a power line is provided. The LED light source includes an LED array, a power line communication (PLC) unit and a current control unit. The PLC unit is electrically connected with the power line, and the current control unit is electrically connected with the LED array and the PLC unit. | 03-05-2009 |
| 20090058318 | Driving Device for Providing Light Dimming Control of Light-Emitting Element - A driving device includes a first switch element to switch between applying or not applying to a light-emitting element a voltage directed to setting the light-emitting element in an ON state, and a constant current control circuit to adjust a current flowing through the light-emitting element when the light-emitting element is in an ON state to a predetermined current value. | 03-05-2009 |
| 20090058319 | ELECTRON SOURCE AND METHOD FOR THE OPERATION THEREOF - An electron source has an electron emitter with an electron emission cathode, a high voltage unit provided for power supply of the electron emission cathode, and a low voltage unit provided to control the high voltage unit. Data are transmitted non-electrically (in particular optically) between the high voltage unit and the low voltage unit. | 03-05-2009 |
| 20090066262 | Light- Emitting Diode Lighting Apparatus and Vehicle Light Lighting Apparatus Using the Same - A single DC/DC converter section | 03-12-2009 |
| 20090066263 | Light Emitting Element Control Circuit - A light emitting element control circuit comprising: a variable current generation circuit configured to generate a variable current varying in a direction of increase or in a direction of decrease; a fixed current generation circuit configured to generate a fixed current smaller than a predetermined current of a light emitting element; and a mode setting circuit configured to selectively set a first mode of prohibiting supply of the variable current and the fixed current to the light emitting element, a second mode of supplying the variable current to the light emitting element, and a third mode of supplying the fixed current to the light emitting element, for the variable current generation circuit and the fixed current generation circuit. | 03-12-2009 |
| 20090072755 | LIGHT-EMITTING SEMICONDUCTOR DEVICE DRIVER AND METHOD - An electronic device includes circuitry for driving a light-emitting diode (LED) or other light-emitting semiconductor device. The circuitry includes a first switch (NM | 03-19-2009 |
| 20090072756 | CONVERTER CIRCUIT CAPABLE OF SELF-REACTIVATION AND RELATED DISPLAY DEVICE - A converter circuit includes a detecting circuit, a PWM circuit, a control circuit, a switching circuit, and a power converting circuit. The detecting circuit generates a first or a second control signal based on the voltage level of a load. The PWM circuit outputs a power control signal when receiving the first control signal, or stops operations when receiving the second control signal. The control circuit outputs a backlight-off signal when receiving the second control signal, and outputs a backlight-on signal after outputting the backlight-off signal. The switching circuit stops operations when receiving the backlight-off signal, and reactivates the PWM circuit after receiving the backlight-on signal. The power converting circuit provides the voltage for driving the load based on the power control signal. | 03-19-2009 |
| 20090072757 | METHOD OF DRIVING A LIGHT EMITTING DEVICE - The present invention is characterized in that a transistor with its L/W set to 10 or larger is employed, and that |V | 03-19-2009 |
| 20090072758 | Current-driven light-emitting display apparatus and method of producing the same - A method for producing an organic EL display device is disclosed. The display device comprises a substrate, a transistor disposed on the substrate, a flattened inter-layer insulation film covering the transistor, a pixel electrode, and an organic EL layer. | 03-19-2009 |
| 20090079357 | Regulation of Wavelength Shift and Perceived Color of Solid State Lighting with Intensity Variation - Exemplary embodiments of the invention provide a system, apparatus, and method of controlling an intensity and spectrum of light emitted from a solid state lighting system. The solid state lighting has a first emitted spectrum at full intensity and at a selected temperature, with a first electrical biasing for the solid state lighting producing a first wavelength shift, and a second electrical biasing for the solid state lighting producing a second, opposing wavelength shift. Exemplary embodiments provide for receiving information designating a selected intensity level or a selected temperature; and providing a combined first electrical biasing and second electrical biasing to the solid state lighting to generate emitted light having the selected intensity level and having a second emitted spectrum within a predetermined variance of the first emitted spectrum over a predetermined range of temperatures. | 03-26-2009 |
| 20090079358 | Regulation of Wavelength Shift and Perceived Color of Solid State Lighting with Temperature Variation - Exemplary embodiments of the invention provide a system, apparatus, and method of controlling an intensity and spectrum of light emitted from a solid state lighting system. The solid state lighting has a first emitted spectrum at full intensity and at a selected temperature, with a first electrical biasing for the solid state lighting producing a first wavelength shift, and a second electrical biasing for the solid state lighting producing a second, opposing wavelength shift. Exemplary embodiments provide for receiving information designating a selected intensity level or a selected temperature; and providing a combined first electrical biasing and second electrical biasing to the solid state lighting to generate emitted light having the selected intensity level and having a second emitted spectrum within a predetermined variance of the first emitted spectrum over a predetermined range of temperatures. | 03-26-2009 |
| 20090079359 | System and Method for Regulation of Solid State Lighting - Exemplary embodiments of the invention provide a system, apparatus, and method of controlling an intensity and spectrum of light emitted from a solid state lighting system. The solid state lighting has a first emitted spectrum at full intensity and at a selected temperature, with a first electrical biasing for the solid state lighting producing a first wavelength shift, and a second electrical biasing for the solid state lighting producing a second, opposing wavelength shift. Exemplary embodiments provide for receiving information designating a selected intensity level or a selected temperature; and providing a combined first electrical biasing and second electrical biasing to the solid state lighting to generate emitted light having the selected intensity level and having a second emitted spectrum within a predetermined variance of the first emitted spectrum over a predetermined range of temperatures. | 03-26-2009 |
| 20090079360 | System and Method for Regulation of Solid State Lighting - Exemplary embodiments of the invention provide a system, apparatus, and method of controlling an intensity and spectrum of light emitted from a solid state lighting system. The solid state lighting has a first emitted spectrum at full intensity and at a selected temperature, with a first electrical biasing for the solid state lighting producing a first wavelength shift, and a second electrical biasing for the solid state lighting producing a second, opposing wavelength shift. Exemplary embodiments provide for receiving information designating a selected intensity level or a selected temperature; and providing a combined first electrical biasing and second electrical biasing to the solid state lighting to generate emitted light having the selected intensity level and having a second emitted spectrum within a predetermined variance of the first emitted spectrum over a predetermined range of temperatures. | 03-26-2009 |
| 20090079361 | METHOD AND DEVICE FOR DRIVING A DISCHARGE LAMP - A method for driving a discharge lamp ( | 03-26-2009 |
| 20090085493 | Electronic Ballast for Discharge Lamps Having an Eol Monitoring Circuit - The invention relates to an electronic ballast for a discharge lamp LA | 04-02-2009 |
| 20090085494 | IMPROVEMENT TO LIGHTING SYSTEMS - The present invention relates to power adaptors for solid state lighting units and fixtures, of a kind including light emitting diodes, one of the adaptors comprising an input for receiving a phase controlled input power signal of varying on-duration and a controller coupled to the input and operable to produce at least one pulsed output driving signal in which both the duration and height of the pulses are varied according to the on-duration of the input power signal, to thereby control a light intensity output of the solid state lighting unit, such that the output is made to vary in a way that substantially matches the intensity response of the human eye. Various other arrangements of power adaptors are described along with dimmer controllers for use with the power adaptors, including some which involve motion sensing techniques. | 04-02-2009 |
| 20090085495 | LIGHT SOURCE AND PROJECTOR - A light source includes an discharge lamp including a first electrode and a second electrode emitting light by discharge between them, a drive unit performing a steady operation which supplies steady energy to the first and second electrodes and an initial operation which supplies energy to the first and second electrodes with an operation different from the steady operation before performing the steady operation, a determination unit determining states of the discharge lamp and a data storage unit storing plural initial power feeding conditions provided corresponding to states of the discharge lamp as examples of the initial operation and plural steady power feeding conditions provided corresponding to the states of the discharge lamp as examples of the steady operation, in which the drive unit performs the initial operation in any one of conditions selected from the plural initial power feeding conditions according to a determination result by the determination unit and performs the steady operation in any one of conditions selected from the plural steady power feeding conditions according to a determination result by the determination unit. | 04-02-2009 |
| 20090096384 | UNIVERSAL DIMMER - Disclosed is a universal dimmer which detects the type of load it is connected to each time the universal dimmer is activated. Information relating to the type of load connected to the universal dimmer is therefore not required to be stored for future use. In one form, the universal dimmer begins each operation in the trailing edge mode and upon detection of an inductive load, switches to leading edge mode. | 04-16-2009 |
| 20090096385 | LIGHT SOURCE APPARATUS, PROJECTOR, AND LIGHT SOURCE APPARATUS DRIVE METHOD - A light source apparatus includes an arc tube having a first electrode and a second electrode that carry out an emission of light due to a discharge between them, and a drive that, when supplying energy in an alternating current to the first electrode and the second electrode, carries out a steady operation supplying a steady energy to the first electrode and the second electrode, and an initial operation making a cumulative energy supplied to at least one electrode, of the first electrode and the second electrode, in an anode period of the relevant electrode, prior to the steady period, greater than during the steady period. | 04-16-2009 |
| 20090102393 | Circuit Arrangement for Operation of a Discharge Lamp with a Switchable Tuned Capacitor - The invention relates to a circuit arrangement for operation of a discharge lamp (EL) with an inverter (INV) which generates a high-frequency alternating current from an input voltage and with a tuned circuit provided with at least one choke (L) and at least one tuned capacitor (C | 04-23-2009 |
| 20090102394 | Circuit Arrangement for Controlling the Operation of an Electronic Transformer - A circuit arrangement for controlling the operation of an electronic transformer ( | 04-23-2009 |
| 20090102395 | CONTROL CIRCUIT AND METHOD FOR SELF-EXCITING CAPACITOR CHARGING CIRCUIT - A first voltage comparator makes a comparison between a first detection voltage that occurs at one terminal of a first resistor and a predetermined first threshold voltage. A second voltage comparator compares a second detection voltage that occurs at one terminal of a second resistor with a predetermined second threshold voltage. A logic unit generates a switching signal, the level of which is switched according to the output signals of the first voltage comparator and the second voltage comparator, and outputs the switching signal thus generated to the gate of a switching transistor. After a predetermined period of time elapses after the switching signal is switched to the level which turns off the switching transistor, an automatic restart circuit forcibly switches the switching signal to a level which switches the switching transistor to the ON state. | 04-23-2009 |
| 20090108767 | Dc/dc Converter Device and Discharge Lamp Lighting Device - A DC/DC converter device according to the present invention includes a plurality of resonant DC/DC converters | 04-30-2009 |
| 20090108768 | BACKLIGHT CONTROL DEVICE AND METHOD FOR CONTROLLING A DRIVING CURRENT OF AN LED - A backlight control device for controlling a driving current of an LED is disclosed. By controlling current outputs from current sources of a plurality of current output units, a display will be able to generate desirable backlight. Then by adjusting currents output by the plurality of current output units, brightness of a plurality of pixels can be dynamically adjusted. The brightness of pixels with higher gray levels can be increased while the brightness of pixels with lower gray levels can be decreased, thereby improving the contrast of image and saving power consumption. | 04-30-2009 |
| 20090108769 | LIGHTING DEVICE AND ILLUMINATION APPARATUS - The present invention provides a lighting device capable of controlling finely modulated light control without stopping other processing regardless of an operation clock. The light modulation signal generating portion calculates a cycle of a PWM signal based on the lighting state of lamp, which is detected by state detecting portion and a predetermined operation clock. A PWM signal of the cycle calculated by the state detecting portion is generated by the light modulation signal generating portion capable of generating the PWM signal corresponding to the cycle of a non-integral number of times of the operation clock, wherein the cycle of the PWM signal can be continuously and finely varied without stopping other processing regardless of operation clocks, and fine modulated light control is enabled. | 04-30-2009 |
| 20090108770 | LIGHT SOURCE, PROJECTOR, AND METHOD FOR DRIVING LIGHT SOURCE - A light source includes an arc tube having a first electrode and a second electrode that emit light by discharge between the electrodes, and a driving unit that supplies a current between the first electrode and the second electrode and can change at least a waveform of frequency and waveform of the supplied current. The driving unit can perform lighting drive of the arc tube, using a driving waveform formed by combining a first lighting waveform having a maximum current value at a part other than a half-cycle rear end of the waveform and a second lighting waveform having a maximum current value at the half-cycle rear end of the waveform. | 04-30-2009 |
| 20090115343 | LED Power Regulator with High-Speed LED Switching - One embodiment of the invention includes a power regulator system. The system comprises at least one power switch configured to repeatedly couple an inductor to an input voltage to regulate a current flow through the inductor. The system also comprises a light-emitting diode (LED) configured to provide illumination based on an amount of the current flow through the inductor. The system further comprises an output switch configured to couple and decouple the LED from the current flow through the inductor in response to an activation signal. | 05-07-2009 |
| 20090115344 | LIGHTING APPARATUS DRIVEN BY COLOR COORDINATE SELECTION MODULE - Provided is a lighting apparatus driven by a color coordinate selection module, which can emit color light corresponding to a chromaticity on a color coordinate, which is selected by a user. The lighting apparatus includes a chromaticity selection unit for providing a chromaticity and color temperatures so that a user can select the chromaticity and color temperatures, a light-emitting unit in which a plurality of light-emitting elements is arranged to selectively emit color light of different colors, a storage unit for storing driving pattern data of the light-emitting elements in response to the chromaticity and color temperatures that can be selected by the chromaticity selection unit, and a controller for controlling the driving of the light-emitting unit using the driving pattern data stored in the storage unit such that light of a chromaticity and color temperature selected by the chromaticity selection unit can be emitted. | 05-07-2009 |
| 20090115345 | HIGH EFFICIENCY OFF-LINE LINEAR POWER SUPPLY - A power supply circuit comprising a charge storage capacitor having a first capacitor terminal adapted to provide a power supply voltage of the power supply and a second capacitor terminal coupled to a circuit common; a first switching device having a first switching terminal adapted to be connected to a voltage source, a second switching terminal operatively coupled to the first capacitor terminal of the charge storage capacitor, and a control terminal, the first switching device characterized by a control terminal switching threshold voltage, the first switching device adapted to conduct a charging current from the first switching terminal to the second switching terminal and into the charge storage capacitor; a control circuit controlling an on/off operation of the first switching device whereby the first switching device is operable to turn on when the magnitude of the voltage of the voltage source is below a predetermined level and turn off when the magnitude of the voltage of the voltage source is above the predetermined level; and a control voltage supply circuit operatively coupled between the first switching terminal of the first switching device and the first capacitor terminal of the charge storage capacitor, the control voltage supply circuit providing a control supply voltage; wherein a control terminal voltage derived from the control supply voltage is provided to the control terminal of the first switching device when the control circuit controls the first switching device to be on, the control terminal voltage having a magnitude in excess of the switching threshold voltage, thereby driving the switching device on in a saturated region of operation. | 05-07-2009 |
| 20090115346 | PNP light emitting transistor and method - A semiconductor light-emitting transistor device, including: a bipolar pnp transistor structure having a p-type collector, an n-type base, and a p-type emitter; a first tunnel junction coupled with the collector, and a second tunnel junction coupled with the emitter; and a collector contact coupled with the first tunnel junction, an emitter contact coupled with the second tunnel junction, and a base contact coupled with the base; whereby, signals applied with respect to the collector, base, and emitter contacts causes light emission from the base by radiative recombination in the base. | 05-07-2009 |
| 20090121648 | Lighting Device - A lighting device ( | 05-14-2009 |
| 20090121649 | ILLUMINATING APPARATUS FOR DISPLAY DEVICE AND DISPLAY DEVICE HAVING SAME - An illuminating apparatus used for a display device includes a plurality of illuminating parts, each of which comprises a first feeding member, a second feeding member, and a cold-cathode tube lamp that is fed by a power supply apparatus via the first and second feeding members. An equivalent circuit of each illuminating part is a series combination of negative resistor and a capacitor connected to an end of the negative resistor. The illuminating parts are arranged in such a manner that the capacitors of the cold-cathode tube lamps are alternate in position. This can reduce the brightness gradient for the position in the tubular axis direction of the lamp. | 05-14-2009 |
| 20090121650 | MAXIMIZING EFFICIENCY OF BATTERY-POWERED LED DRIVERS - An apparatus and method is provided for optimizing LED driver efficiency. The present invention offers low cost solutions for powering LEDs while minimizing overall power dissipation in devices powered by a depletable power source. Low system cost is attained using a charge pump to increase LED drive voltage level and implementing combinations of drive techniques to overcome the inefficiency of the charge pump. A switch bypasses the charge pump when depletable power source output voltage is sufficient to directly drive an LED load. At certain output voltage levels, the switch can be opened causing the charge pump to boost drive voltage. The output voltage may also be PWM modulated to drive the LED load and, at some voltages, the depletable power source may drive the LED load directly. Efficiency levels of 90-97% are attainable. | 05-14-2009 |
| 20090121651 | Color-Changing Light Array Device - A color-changing light array powered by a driver circuit, the driver circuit responsive to a controller circuit, and the controller circuit configured to change display lighting patterns or colors based on modes of operation and off-on power cycle intervals. | 05-14-2009 |
| 20090128050 | Circuit Unit - The invention relates to a circuit unit for a semiconductor unit which produces radiation, with a forward voltage U | 05-21-2009 |
| 20090128051 | Apparatus and method of driving lamp of liquid crystal display device - A method of driving a lamp of a liquid crystal display device includes generating a control signal; generating a first drive signal using the control signal; generating a second drive signal by shifting a voltage level of the first drive signal; selectively outputting one of a high potential supply voltage and a low potential supply voltage in response to the second drive signal; transforming the selectively outputted voltage; and supplying the transformed voltage to a lamp. | 05-21-2009 |
| 20090134812 | Exhaust fan for showing variable characters - The present invention is related to an exhaust fan, particularly to a fan applied to a personal computer (PC) or computer's power source unit (PSU). The exhaust fan includes base, blade and a second printed circuit board (PCB). The second PCB is disposed on a surface of the blade. A set of induction generator disposed to a joint of the blade joined to the base is electrically connected to the second PCB as a loop. An induced alternate current (AC) turned into direct current (DC) powers the second PCB instead of the mother board power source. Therefore, the low profile fan can be added to the PSU for a low clearance installment. | 05-28-2009 |
| 20090134813 | DISCHARGE LAMP LIGHTING DEVICE - The inverter circuit is feedback-controlled by a substantial current flowing into the discharge lamp, which is detected by the current detecting means. A high starting voltage is supplied to the discharge lamp with the operation frequency lowered by the control circuit after the end of a preheating action. The inverter circuit is controlled so that the current of the discharge lamp becomes a desired current value as soon as the current detecting means detects the current substantially flowing into the discharge lamp. The discharge lamp can be prevented from being instantaneously brightly lit without separately providing any structure for detecting lighting of the discharge lamp. | 05-28-2009 |
| 20090140663 | DISPLAY SYSTEM CAPABLE OF AUTO-ADJUSTING BRIGHTNESS AND METHOD FOR AUTO-ADJUSTING BRIGHTNESS THEREOF - A display system includes a display panel, a solar battery, an electric current measuring module, a memory, and a brightness adjusting module. The solar battery is for converting light energy into electric current. The electric current measuring module is for measuring electric current generated from the solar battery. The memory is for storing a pre-defined associative array of current values and their corresponding brightness values. The brightness adjusting module is for querying the associative array stored in the memory to get the corresponding brightness value, using the measured electric current value as a key, and adjusting the brightness of the display based on the brightness value returned from the associative array. | 06-04-2009 |
| 20090140664 | BACKLIGHT DRIVING METHOD AND DISPLAY APPARATUS USING THE SAME - A display and a method for driving a backlight thereof are provided. The display generates a control voltage and supplies the generated control voltage to a backlight driving unit in a step-wise manner. Accordingly, malfunctions of the backlight due to incomplete activation during initial driving, can be avoided. | 06-04-2009 |
| 20090140665 | LIGHT SOURCE MODULE, METHOD FOR DRIVING THE LIGHT SOURCE MODULE, DISPLAY DEVICE HAVING THE LIGHT SOURCE MODULE - A light source module having a plurality of light source blocks corresponding to a plurality of display regions, a method for driving the light source module, and a display device having the light source module. The output brightness of each of the light source blocks is individually dimmed according to a dimming control signal. A dimming control unit determines the average gray level and inherent brightness of each of the respective display regions, calculates a threshold gray level of each display region by using its inherent brightness, outputs a fixed brightness as a dimming control signal when the average gray level of the display region is greater than the threshold gray level, and outputs a variable brightness based upon the inherent brightness value, as the dimming control signal when the average gray level of the display region is less than the threshold gray level. Accordingly, brightness spots can be reduced by performing the brightness dimming with consideration of the interference brightness caused by the adjacent light source blocks. | 06-04-2009 |
| 20090140666 | Dimming control circuit and method for generating analog and digital signals according to one analog control signal - The present invention discloses a dimming control circuit and a method for generating analog and digital signals according to an analog control signal. The dimming control circuit according to the present invention comprises an input for receiving an analog control signal; a digital dimming circuit for receiving the analog control signal and generating a digital signal; an analog dimming circuit for receiving the analog control signal and generating an analog signal; and a power circuit enabled by the digital signal for converting a supply voltage to an output voltage according to the analog signal generated by the analog dimming circuit. | 06-04-2009 |
| 20090146580 | HIGH INTENSITY DISCHARGE LAMP DRIVER WITH VOLTAGE FEEDBACK CONTROLLER - Current arrangement for operating a high intensity discharge lamp or a ultra high pressure discharge lamp, comprising a DC-to-DC converter, a control circuit for controlling the output value of the DC-to-DC converter, and a commutator. The control circuit comprises two control loops, one of which controlling an absolute average value of the lamp current, the other of which controlling and minimizing small variations of the lamp current around a reference value. An adaptive control of the first and second loop controllers can be used to adjust the controllers to changing system dynamics. | 06-11-2009 |
| 20090153071 | Ignition circuit for igniting a discharge lamp and method for igniting the discharge Lamp - The invention specifies a starting circuit arrangement for starting at least one discharge lamp by applying an electrical starting voltage pulse to the discharge lamp, the starting circuit arrangement having the following features: at least one source circuit arrangement for providing an electrical primary voltage pulse, at least one starting circuit for providing the starting voltage pulse, and at least one inductive coupling element for inductively coupling-in the primary voltage pulse into the starting circuit for the purpose of generating the starting voltage pulse. The starting circuit arrangement is characterized by the fact that the inductive coupling element has a transformation ratio for a voltage transformation which is selected from the range of from 1/25 to 1/400. In addition, the invention also specifies a method for starting a discharge lamp by applying a starting voltage pulse using the starting circuit arrangement as claimed in one of the preceding claims, having the following method steps: a) forming a starting resonant circuit with a discharge lamp connected in parallel, and b) generating the starting voltage pulse in the starting resonant circuit. In particular, the starting circuit arrangement is used for starting VIP lamps, it being possible for the VIP lamps also to be started again in the hot state during operation at temperatures of from 500° C. to 1000° C. | 06-18-2009 |
| 20090153072 | Inverter Circuit - From the individual small areas of a conductor pattern arranged on the back side of a circuit board, there are individually extended leader patterns, which are midway led by through holes to the surface side of the circuit board. The individual leader patterns led to the surface side are connected with a terminal portion on the low-voltage side through jumper pads. The desired small areas are enabled to function by shorting the jumper pads with solder. The individual small areas are constituted to have a capacity of 1 pF, when caused to function, and they have such a capacity as a pattern capacitor as is proportional to the number of the shorted jumper pads. | 06-18-2009 |
| 20090153073 | Light source device, projector, and driving method of discharge lamp - To prevent biased consumption of electrodes in a discharge lamp and to prevent biased precipitation of the electrode material, a light source is provided. The light source device has a discharge lamp that emits light by discharge between a first electrode and a second electrode; and a driver that supplies alternating current to the first and the second electrodes so as to maintain the discharge, and changes duty ratio of the alternating current in accordance with predetermined pattern. The predetermined pattern includes a plurality of section periods for which the duty ratio maintains mutually different values for a predetermined period. | 06-18-2009 |
| 20090153074 | Lamp and driving device for backlight assembly having the same - A lamp includes first and second glass tube portions for emitting light, respective one ends of the first and second glass tube portions being bent and connected integrally to each other, first and second electrodes respectively formed at respective other ends of the first and second glass tube portions, and a third electrode formed at the bent portion of the first and second glass tube portions. | 06-18-2009 |
| 20090160354 | DESIGNER-STYLE DIMMER APPARATUS AND METHOD - A switch for controlling distribution of power to a light. The switch may include a frame, a controller connected to the frame, and a rocker connected to the frame to pivot with respect thereto through a range of motion having a first extreme and a second extreme, opposite the first extreme. The switch may also include a signal generator connected to the frame and comprising a first micro switch positioned to be actuated by the rocker pivoting toward the first extreme and a second micro switch positioned to be actuated by the rocker pivoting toward the second extreme. The controller may be connected to the signal generator to receive input therefrom and comprise logic to control the distribution in accordance with the input. | 06-25-2009 |
| 20090160355 | Discharge Lamp Lighting Apparatus - There is provided highly efficient discharge lamp lighting apparatus capable of reducing its cost by reducing high withstand voltage components on the secondary side of a high voltage transformer and stabilizing, its circuit operation. A discharge lamp lighting apparatus ( | 06-25-2009 |
| 20090160356 | Drive Circuit for a Switchable Heating Transformer of an Electronic Ballast and Corresponding Method - The drive signal for a switchable heating transformer of an electronic ballast should be capable of being produced in a simple manner. For this purpose, the invention provides for an oscillating inverter voltage, which has a variable inverter frequency, to be tapped off, for example, at the half-bridge center point. The inverter frequency is then preferably converted into a drive signal by a charge pump (C | 06-25-2009 |
| 20090160357 | INVERTER, ITS DRIVE METHOD, LIGHT EMITTING DEVICE AND LIQUID CRYSTAL TELEVISION USING THE SAME - The switching timing is flexibly set in an inverter. | 06-25-2009 |
| 20090160358 | CONTROLLER AND METHOD FOR CONTROLLING AN INTENSITY OF A LIGHT EMITTING DIODE (LED) USING A CONVENTIONAL AC DIMMER - The present invention relates to providing a flicker-free method and a control circuit for use in conjunction with a conventional AC dimmer coupled to a mains AC supply to continuously control an intensity of a Light Emitting Diode (LED) over substantially a full range of the dimmer, the control circuit comprising: a controllable source of DC voltage that is configured for coupling to at least one LED and that is powered independently of an output of the AC dimmer thereby isolating the LED voltage from the output of the AC dimmer; and a controller coupled to the source of DC voltage, the controller being powered independently of the output of the AC dimmer and being responsive to a firing angle of the AC dimmer for varying a level of the DC voltage as a function of said firing angle. | 06-25-2009 |
| 20090167203 | AC-powered, microprocessor-based, dimming LED power supply - A dimmable, light-emitting diode (LED) power supply adapted to provide a direct current (DC), constant current (“constant current source”) from a conventional, phase-controlled 120 VAC, 60 Hz power source is disclosed. The constant current source of the present invention utilizes two processes to control dimming. In a first process, the phase angle of the input voltage is used to control the duty cycle of a line frequency pulse width modulation (PWM). In a second process, a proportional-current limit adjustment is used to control the average current to the LED during the ON time of the line frequency by PWM. As a result, at relatively low phase angles, peak currents can be lowered, reducing flicker and improving the audible noise levels generated by the circuit. | 07-02-2009 |
| 20090167204 | LAMP CONTROL CIRCUIT AND METHOD OF DRIVING A LAMP - In a method of driving a lamp using a lamp control circuit, the lamp control circuit comprises a communication circuit and a lamp driving circuit. The lamp driving circuit is configured to drive a lamp in accordance with a number of lamp operating parameters. The method comprises providing a lamp operating parameter to a memory of the communication circuit; providing a supply voltage to the lamp driving circuit; and supplying the lamp operating parameter from the memory to the lamp driving circuit. Then, driving the lamp by the lamp driving circuit corresponding to the supplied lamp operating parameter In the lamp control circuit, the communication circuit comprises a memory and is configured to supply the lamp operating parameter to the lamp driving circuit, when the lamp driving circuit is supplied with a supply voltage. In an embodiment, the lamp operating parameter may be supplied to the memory when no supply voltage is supplied to the lamp control circuit. | 07-02-2009 |
| 20090167205 | LED Drive Circuit And Method For Using Same - In various embodiments, there is provided an LED drive circuit and a method for using the same. Specifically, the present disclosure is directed to an LED drive circuit for pulse oximeters. In an embodiment, the LED drive circuit includes a current mirror configured to provide drive current to an LED of a sensor. Additionally, the method includes providing current to first and second current mirrors, wherein the first and second current mirrors are configured to control first and second light sources. | 07-02-2009 |
| 20090174340 | DIRECT-CURRENT POWER SUPPLY DEVICE, POWER SUPPLY DEVICE FOR DRIVING LED AND SEMICONDUCTOR INTEGRATED CIRCUIT FOR CONTROLLING POWER SUPPLY - Disclosed is a direct-current power supply device, including: an inductor; a switching element to intermittently supply a current to the inductor; an external terminal to which an output current of an external unit is fed back; a control circuit to generate a pulse signal having a pulse width corresponding to an output voltage of the external terminal, generate a drive signal for driving the switching element in response to the pulse signal, and output the drive signal to the switching element; a variable current source which is connected to the external terminal and which is turned on and off in response to a shutdown signal; and a discharge unit which is connected between the external terminal and a ground point and which is turned on in response to the shutdown signal so that the output current fed back to the external terminal is discharged into the ground point. | 07-09-2009 |
| 20090174341 | COLD-CATHODE FLUORESCENT LAMP (CCFL) CURRENT CONTROL CIRCUIT - A circuit to control an AC lamp current provided by an input AC voltage supply to a cold-cathode fluorescent lamp (CCFL). The circuit includes a capacitor connected in series between the AC voltage supply and one terminal of the CCFL, the capacitor biasing the CCFL with the AC lamp current; a switch having first, second, and control terminals, the first terminal being connected to the CCFL and the second terminal being connected to the other side of the supply; a diode connected in parallel to the switch; and a resistor connected in parallel to the diode, wherein the AC lamp current is controlled by controlling the switch to add and remove resistance in series with the CCFL. | 07-09-2009 |
| 20090174342 | ELECTRONIC LIGHT GENERATING ELEMENT LIGHT BULB - The present system for driving an electronic light generating element, includes: (i) input terminals, (ii) an input circuit coupled to the input terminals and operable to convert a sinusoidal signal to a signal independent of negative current attributes, (iii) a switch control circuit coupled to the input circuit and operable to generate a switching signal having pulses, and (iv) a switching element coupled to the input circuit and the switch control circuit. The switching element is operable to generate an output signal formed as a series of bursts having peak amplitudes above a maximum forward current rating for a duty cycle less than a maximum operating duty cycle over which an electronic light generating element may be catastrophically damaged in response to the signal independent of negative current attributes and switching being applied to the switching element. The output signal is applied to the electronic light generating element to produce light. | 07-09-2009 |
| 20090179584 | DC/DC CONVERTER - A first transistor and a second transistor are disposed in series between a first terminal and a ground terminal. A diode is disposed in parallel with the first transistor in a direction such that the cathode thereof will be on the first terminal side. An inductor is disposed between a connection point and a second terminal. A first capacitor is disposed between the first terminal and the ground terminal, and a second capacitor is disposed between the second terminal and the ground terminal. In a first mode, a control unit allows the first transistor and the second transistor to be alternately subjected to a switching operation, so as to lower the voltage of an external voltage Vext of the first terminal and to output the lowered voltage to the second terminal. In a second mode, the control unit turns the first transistor off, and allows the second transistor to be subjected to a switching operation, so as to raise the voltage of a voltage that is input to the second terminal and to output the raised voltage to the first terminal. | 07-16-2009 |
| 20090179585 | UNI-DIRECTIONAL LIGHT EMITTING DIODE DRVIE CIRCUIT IN BI-DIRECTIONAL DIVIDED POWER IMPEDANCE - The present invention transfers AC electric power to mutually series connected resistive impedance components, inductive impedance or capacitive impedance to divide the voltage of the power source, whereby the divided power of each impedance is rectified by the rectifier device to be the uni-directional DV power for driving the unidirectional light emitting diode. | 07-16-2009 |
| 20090184655 | POWER MANAGEMENT SYSTEM FOR LIGHT EMITTING DIODES - A power management system comprising: providing a one pin driver circuit; sourcing a managed current from the one pin driver circuit; and illuminating a light emitting diode by the managed current including reducing the managed current when the light emitting diode is not coupled. | 07-23-2009 |
| 20090184656 | BACKLIGHT SYSTEM HAVING A LAMP CURRENT BALANCE AND FEEDBACK MECHANISM AND RELATED METHOD THEREOF - A lamp current balance and feedback system and related method are disclosed for balancing the input and output currents of a lamp by making use of a lamp current balance and feedback mechanism. The operation of the lamp current balance and feedback mechanism includes coupling the input current of the lamp for generating a first balance current by a first transformer, coupling the output current of the lamp for generating a second balance current by a second transformer, coupling the first and second transformers for substantially equalizing the first and second balance currents, generating a feedback signal based on the first or second balance current by a feedback circuit, generating a pulse width modulation signal based on the feedback signal by a pulse width modulation signal generation circuit, and driving the input and output currents of the lamp based on the pulse width modulation signal by a driving circuit. | 07-23-2009 |
| 20090184657 | BACKLIGHT APPARATUS - The invention discloses a backlight apparatus. The backlight apparatus includes a power source, a lamp, a balance transformer, a detecting circuit, a judging module, and a controlling module. The balance transformer includes a primary winding electrically connected to the power source and a secondary winding corresponding to the primary winding and electrically connected to the lamp. The detecting circuit is used for detecting a current generated by the secondary winding and generating a first voltage according to the current. The judging module is used for judging whether the value of the first voltage is smaller than a default value. The controlling module is used for controlling the power source according to a judgment made by the judging module. | 07-23-2009 |
| 20090184658 | IMAGE DISPLAY APPARATUS - An image display apparatus includes: a rear plate having multiple electron-emitting devices; and a face plate having multiple anode electrodes and a common electrode electrically connected to the multiple anode electrodes, and facing the rear plate. The rear plate has a first conductive member at a position facing the common electrode, and the first conductive member is electrically connected via a resistive device to a second conductive member that is applied with a potential lower than a potential which is applied to the multiple anode electrodes. | 07-23-2009 |
| 20090189537 | CONNECTOR AND A DISPLAY APPARATUS HAVING THE SAME - A display apparatus including: a backlight unit generating a light; a display panel receiving the light to display an image; a backlight driving circuit receiving a driving power and a control signal from an external system to drive the backlight unit; a display panel control circuit receiving a driving signal and an image signal from the external system to control the display panel; and a connector electrically connecting the external system to the backlight driving circuit and the display panel control circuit, wherein the driving power, the control signal, the driving signal and the image signal are transmitted through the connector. | 07-30-2009 |
| 20090189538 | Desk Lamp with Parallel Guidance - In a lamp, in particular a desk lamp, with a base plate ( | 07-30-2009 |
| 20090195180 | LED DRIVER CIRCUITS AND METHODS - An LED driver circuit may include dimming circuitry. In particular, the LED driver circuit may include a switching converter, an LED and a switch. The LED may be electrically connected to the switching converter and the switch may be connected in parallel with the LED. The switching converter and/or the switch may be configured to be controlled to achieve dimming of the LED. Current may be supplied to the LED and the switch may be turned on and off to dim the LED. The switching converter coupled to the LED may include a switching element in series with an inductor and the LED. In such case, the switching element may be turned on to supply current to the LED and the inductor, and the switch may be turned on and off to dim the LED. | 08-06-2009 |
| 20090195181 | METHOD FOR OPERATING AN ILLUMINATION SYSTEM WITH SEQUENTIAL COLOR FILTERING AND A HIGH PRESSURE DISCHARGE LAMP - The present invention relates to a method for operating an illumination system, which illumination system has a high pressure discharge lamp driven with a commutating lamp current (IL), and a color filter system for filtering the light of the high pressure discharge lamp in a plurality of sequential color segments (A, B, D, E, G, H). The invention further relates to an illumination system for embodying the inventive method, and to a computer program product which can be loaded into an inventive illumination system in order to configure said illumination system in accordance with the inventive method. According to the invention, prior to a commutation in an intermediate phase (ZP), the lamp current (IL) passes through an intermediate phase pulse (DP), during which the light of the illumination system is suppressed. When a change occurs in the course of the lamp current preceding the intermediate phase (ZP), the intermediate phase pulse (DP) occurring in the intermediate phase is adapted in such a way that the change is at least partially compensated in the effect thereof on the electrode temperature at the time of the commutation. | 08-06-2009 |
| 20090200956 | POWER SUPPLY CIRCUIT AND PORTABLE DEVICE - A power supply circuit has a charge pump (CHP) step-up circuit including multiple CHP units for stepping up a given power supply voltage to a step-up voltage higher than the power supply voltage, and, based on an output voltage setting signal, converts the step-up voltage to a required output voltage. A comparator compares the detection voltage associated with the output voltage with a reference voltage to generate a comparison signal. In supplying a required output voltage, the number of operable CHP units can be changed to control the step-up voltage based on the comparison signal. | 08-13-2009 |
| 20090200957 | ILLUMINATION APPARATUS - The present invention relates to an illumination apparatus comprising an LED light source which includes an LED chip and a sealing member containing a fluorescent material therein and sealing the LED chip and is configured to illuminate an object, and a light-transmitting member provided in front of the LED light source, the LED chip being configured to make standby emission of light by application of a standby current during standby illumination of the object, the LED chip being controlled so that a color of the sealing member containing the fluorescent material is less visible from outside, and a current value of the standby current being controlled according to brightness of external light detected by an external light sensor to reduce power consumption. | 08-13-2009 |
| 20090200958 | CONTROLLING REFLECTED LIGHT USING ELECTRONIC PAPER - A system and a method for using ePaper as a light control media in lighting fixtures or other light enhanced applications to modify, dim or color-shift the light used for lighting the space. One system includes a light source, an ePaper reflector with controllable reflectivity for controlling the light reflected from the reflector and/or an ePaper baffle with controllable translucency for controlling the light through the baffle. The light incident on the ePaper media may include light from other sources such as natural light. One method compares desired lighting in a space to characteristics of the light source. Characteristics of the ePaper media are then adjusted to provide the desired amount of light to the objects under illumination. Reflectivity from walls and furniture may be controlled by applying ePaper to their surfaces. The light source and the ePaper media may be controlled simultaneously to control the lighting. | 08-13-2009 |
| 20090200959 | Light-Emitting Diode Driving Circuit - A light-emitting diode driving circuit includes a control circuit, a transistor switch and a compensating circuit. The control circuit receives an oscillating signal to generate a pulse drive signal. The transistor switch is activated by the pulse drive signal such that an inductor is charged by an input voltage, in which the inductor is arranged to deliver an inducting current to at least one light-emitting diode when the transistor switch is deactivated. The compensating circuit is coupled between the control circuit and a capacitor provided for reducing ripples of an output voltage corresponding to the inducting current. The compensating circuit performs a charging and discharging operation along with the capacitor when controlled by a dimming control signal provided to control brightness of the light-emitting diode. | 08-13-2009 |
| 20090200960 | Methods and Apparatus for Self-Starting Dimmable Ballasts With A High Power Factor - Methods and apparatus for self-starting dimmable ballast circuits are disclosed. In the described examples, a dimmable ballast circuit includes a rectifier, an energy storage device, a driver circuit, and a resonant circuit that are configured to actuate the light source such as a fluorescent lamp. The power source is coupled to the light source via a single resonant circuit that includes power factor correction therein. Further, the resonant circuit is selectively configured to start the light source without requiring a separate starter circuit. Further, energy storage device is a capacitor that stores high frequency energy and continually recycles energy in the circuit, resulting in a circuit with a large power factor. Because the current flowing in the circuit is substantially sinusoidal, the described examples generally have an ideal power factor. | 08-13-2009 |
| 20090200961 | ELECTRICAL DEVICE, IN PARTICULAR AN ELECTRIC POWER TOOL OR AN ELECTRICAL APPLIANCE - An electric appliance having a main electric load, an auxiliary electric load, and a voltage supply for operating both electric loads. An auxiliary voltage is generated by the voltage supply and supplied to the auxiliary electric load at a constant level so that the power of the auxiliary electric load remains substantially the same irrespective of voltage fluctuations in the voltage supply. | 08-13-2009 |
| 20090200962 | POWER SUPPLY APPARATUS - In a power supply apparatus for performing constant current driving of a light emitting diode which is a load circuit, a constant current circuit is disposed on a path for driving the load circuit. A charge pump circuit which is a voltage generating circuit outputs a driving voltage to the light emitting diode. A monitoring circuit monitors the voltage across the two ends of the constant current circuit. This monitoring circuit includes a voltage source which generates a threshold voltage that follows the fluctuation of the voltage at which the constant current circuit can operate stably, compares the voltage across the two ends of the constant current circuit and the threshold voltage generated by the voltage source, and outputs a comparison result Vs to a control unit. The control unit controls the charge pump circuit on the basis of the output of the monitoring circuit. | 08-13-2009 |
| 20090206769 | Smart Load Control Device Having a Rotary Actuator - A load control device for controlling the amount of power delivered from an AC power source to an electrical load comprises a rotary actuator, such as a rotary knob or a rotary wheel. The load control device increases and decreases the amount of power delivered to the electrical load in response to rotations of the rotary knob in first and second directions, respectively. The load control device accelerates the rate of change of the amount of power delivered to the load in response to the angular velocity of the rotary actuator. The load control device generates a ratcheting sound when the rotary actuator is rotated in the first direction at a high-end intensity of the load control device. The load control device is operable to control the electrical load in response to both actuations of the rotary actuator and digital messages received via a communication link. | 08-20-2009 |
| 20090206770 | LIGHT EMITTING DISPLAY DEVICE AND DRIVING METHOD THEREOF - Disclosed herein are a light emitting display device which can reduce hysteresis of a driving transistor to improve picture quality, and a method for driving the same. The device includes a pixel cell formed in an area defined by a data line supplied with a data voltage, at least one scan line supplied with a scan signal, a light emission control signal line supplied with a light emission control signal, a driving voltage line supplied with a driving voltage, and a compensation voltage line supplied with a compensation voltage of a first voltage level or a second voltage level different from the first voltage level. The pixel cell includes a light emitting element for emitting light by current, and a pixel circuit for providing current corresponding to the data voltage to the light emitting element using the data voltage, scan signal, light emission control signal, driving voltage and compensation voltage. | 08-20-2009 |
| 20090212715 | Oled Driver and Lighting Apparatus Equipped with the Same - An OLED driver for driving at least one organic electroluminescence element and lighting apparatus equipped with the driver. The driver has a direct-current power source and a dimmer. The source alternately applies first voltage and second voltage across the element. The first voltage is approximately equal to drive voltage of the element. The second voltage is lower than the first voltage and higher than barrier voltage of the element. The dimmer controls the source so as to change a ratio of a first term to a second term to dimm the element. The first term is a period of time for which the first voltage is applied across the element. The second term is a period of time for which the second voltage is applied across the element. | 08-27-2009 |
| 20090218956 | ILLUMINATION CONTROL ASSEMBLY FOR IMPROVING DECAYING OF WHITE LIGHT EMITTING DIODE - An illumination control assembly for decaying of a white light emitting diode comprising a light source controller for controlling the illumination of the white light emitting diode; a driving control circuit installed with an electromagnetic protection module, a pulse width modulation module, a current control unit which is connected to the light source controller for driving the white light emitting diode; and a white light emitting diode display including at least one white light emitting diode; the white light emitting diode being connected to a light source controller for controlling the illumination of the white light emitting diode and for transferring electronic signals so that the pulse width modulation module adjusts output from the current control unit to retain the illumination of the white light emitting diode with a constant value; | 09-03-2009 |
| 20090218957 | METHODS, APPARATUSES, AND COMPUTER PROGRAM PRODUCTS FOR CONSERVING POWER IN MOBILE DEVICES - An apparatus for conserving power in mobile devices may include a processor. The processor may be configured to determine whether a condition has been satisfied and alter a state of one or more functionalities of a device if the condition has been satisfied while leaving the state of one or more other functionalities of the device unaltered. Corresponding methods, and computer program products are also provided. | 09-03-2009 |
| 20090218958 | DISPLAY PANEL DRIVE APPARATUS - A display panel drive apparatus which can keep display brightness constant, thus preventing the occurrence of unevenness in brightness. The drive apparatus includes a current controlling voltage generating circuit to generate a current control voltage. The drive apparatus also includes a plurality of output drivers to supply brightness pulses whose amplitude is decided based on the current control voltage respectively onto data lines of a display panel in synchronization with a clock signal. The drive apparatus also includes a clock generating circuit to generate a pulse signal of a pulse period based on the current control voltage as the clock signal. | 09-03-2009 |
| 20090224685 | DRIVE CIRCUIT FOR DRIVING A GAS DISCHARGE LAMP, AND METHOD OF CALIBRATING A DRIVE CIRCUIT - A method is described for calibrating a CDCCD circuit ( | 09-10-2009 |
| 20090230875 | METHOD AND A DRIVER CIRCUIT FOR LED OPERATION - In a method and a driver circuit for operating one or more light emitting diodes, LEDs, an alternating supply current is generated and transformed to an alternating secondary winding voltage. Using rectifier means, such as diodes or synchronous switches, the alternating secondary winding voltage is converted to a substantially constant load current by using a buffer element, such as an output choke, i.e. a suitable inductor. The power transferred from the power source to the LEDs may be controlled by frequency control of the alternating supply current. | 09-17-2009 |
| 20090230876 | Metal halide discharge lamp and metal halide discharge lamp system - [Problems] To provide a mercury-free metal halide discharge lamp and a metal halide discharge lamp system for lighting the same of the dc lighting type with reduced inter-electrode color temperature difference. | 09-17-2009 |
| 20090230877 | DISCHARGE LAMP LIGHTING APPARATUS - A discharge lamp lighting apparatus is mounted on a single circuit board. The apparatus converts a direct current into an alternating current, applies voltages of opposite phases to both ends of a discharge lamp. The apparatus includes two resonant circuits. Each of the resonant circuits includes a transformer having a primary winding and a secondary winding, a resonant reactor, and resonant capacitors. Output terminals of the two resonant circuits are connected to the ends of the discharge lamp, to apply the voltages of opposite phases to the ends of the discharge lamp, respectively. Resonant characteristics of the two resonant circuits are equalized with each other by determining values of the resonant reactors of the two resonant circuits according to values of stray capacitances determined by the lengths of high-voltage output lines extended from the two resonant circuits to the ends of the discharge lamp. | 09-17-2009 |
| 20090230878 | GaN-BASED SEMICONDUCTOR LIGHT-EMITTING ELEMENT, LIGHT-EMITTING ELEMENT ASSEMBLY, LIGHT-EMITTING APPARATUS, METHOD OF MANUFACTURING GaN-BASED SEMICONDUCTOR LIGHT-EMITTING ELEMENT, METHOD OF DRIVING GaN-BASED SEMICONDUCTOR LIGHT-EMITTING ELEMENT, AND IMAGE DISPLAY APPARATUS - A GaN-based semiconductor light-emitting element includes a first GaN-based compound semiconductor layer of n-conductivity type, an active layer, a second GaN-based compound semiconductor layer of p-conductivity type, a first electrode electrically connected to the first GaN-based compound semiconductor layer, a second electrode electrically connected to the second GaN-based compound semiconductor layer, an impurity diffusion-preventing layer composed of an undoped GaN-based compound semiconductor, the impurity diffusion-preventing layer preventing a p-type impurity from diffusing into the active layer, and a laminated structure or a third GaN-based compound semiconductor layer of p-conductivity type. The impurity diffusion-preventing layer and the laminated structure or the third GaN-based compound semiconductor layer of p-conductivity type are disposed, between the active layer and the second GaN-based compound semiconductor layer, in that order from the active layer side. | 09-17-2009 |
| 20090230879 | DRIVER CIRCUIT, METHOD FOR OPERATING AND USE OF A CURRENT MIRROR OF A DRIVER CIRCUIT - A driver circuit, operating method, and use of a current mirror of a driver circuit is provided that includes at least one output transistor, a reference network with at least one reference transistor, a switching device, which is connected to the control input of the output transistor and to the control input of the reference transistor to form a switchable current mirror, a current source for providing a reference current for a reference current path, whereby the current source and the reference transistor are arranged in the reference current path, a load terminal, whereby the load terminal and the output transistor are arranged in a load current path, and at least one damping network, which is connected to or connectable to the reference current path. Wherein a connection of components of the at least one damping network and a connection of components of the reference network are substantially the same. | 09-17-2009 |
| 20090237000 | PDP DRIVING APPARATUS AND PLASMA DISPLAY - A PDP driving apparatus drives a plasma display panel (PDP) having sustain electrodes, scan electrodes, and address electrodes. The PDP driving apparatus includes a high side switch element and a low side switch element, those electrically coupled in series. A specific pulse voltage is applied from a junction point of the high side switch element and the low side switch element to at least sustain electrodes, scan electrodes, or address electrodes of the plasma display panel. At least one of the high side switch element and the low side switch element is a bidirectional switch element. | 09-24-2009 |
| 20090237001 | Light Output Device and Image Forming Apparatus Including the Same - A light output device includes a feedback-signal generating unit configured to generate a feedback control signal for maintaining output power of the light at a predetermined value. The feedback-signal generating unit generates the feedback control signal in a gradually rising manner and supplies the generated feedback control signal to the output unit so that output power of the light is gradually increased at a time of power-on. The light output device also includes a discharge circuit configured to discharge a charge stored in the feedback-signal generating unit and thereby accelerate decrease of the feedback control signal and a power-voltage monitoring circuit configured to monitor a voltage of the power supplied to the output unit. The power-voltage monitoring circuit, upon detecting shutdown of the power, controls the discharge circuit and thereby causes discharge of the charge stored in the feedback-signal generating unit. | 09-24-2009 |
| 20090243507 | SUNNY-CLOUDY SCALE FOR SETTING COLOR TEMPERATURE OF WHITE LIGHTS - A control ( | 10-01-2009 |
| 20090243508 | BALLAST CIRCUIT - A ballast circuit is provided. The ballast circuit comprises a first lamp set, a second lamp set, a detection circuit, and a latch circuit. The first lamp set comprises a first inductor and a plurality of containing areas. The second lamp set comprises a second inductor and at least one containing area. The detection circuit is configured to receive a direct current (DC) voltage and coupled to the containing areas of the first and second lamp sets so that the detection circuit, the first inductor, the second inductor, and a plurality of lamps contained in the containing areas are in a series connection and generate a first signal. The latch circuit is coupled to the detection circuit and configured to selectively start in response to the first signal. | 10-01-2009 |
| 20090251064 | Semiconductor device, electro-optical device, and electronic instrument - A semiconductor device includes a source circuit and a control circuit. The source circuit includes a plurality of operational amplifiers, a plurality of transmission gates, one end of each of the transmission gates being connected to a corresponding source line, and a buffer circuit that outputs a switch control signal. When the number of transmission gates that are turned ON/OFF using the buffer circuit is referred to as n, a gate width and a gate length of a MOSFET of each of the transmission gates are respectively referred to as Wb and Lb, a gate width and a gate length of a MOSFET of the buffer circuit are respectively referred to as Wa and La, and K indicates a constant, the relationship n×Wb×Lb≧K×(Wa/La) is satisfied. | 10-08-2009 |
| 20090251065 | Circuit Arrangement and Method for Operating at Least One LED - A method and a circuit arrangement for operating at least one LED, includes: a first and a second mains connection for connecting a mains voltage; a first rectifier, whose rectifier input is coupled to the mains connections and at whose rectifier output the rectified mains voltage can be provided; an electronic pump switch coupled to the rectifier output, defining a pump node; a main energy store coupled to that side of the electronic pump switch which faces away from the rectifier output; an inverter coupled to the main energy store supplied with energy therefrom. The inverter provides an inverter voltage at its inverter output which has an inverter frequency; a pump network coupling the inverter output to the pump node; a matching network, via which coupling the inverter output to the connection terminals for at least one LED, wherein the matching network has a resonant circuit having a natural frequency. | 10-08-2009 |
| 20090256491 | Method for Operating a Gas Discharge Lamp - The invention relates to a method for operating a gas discharge lamp, in which the shape of at least one electrode of the gas discharge lamp is changed, in which by changing the lamp current for a predeterminable duration, at least one current pulse is generated such that structures which have grown on the at least one electrode are at least partially removed, the current pulse being generated for the duration of at least one entire half cycle of the AC voltage or the alternating current if the gas discharge lamp is fed AC voltage or alternating current, and the current pulse being generated with a pulse duration of between approximately 0.1 s and approximately 5 s if the gas discharge lamp is fed DC voltage or direct current. | 10-15-2009 |
| 20090256492 | Light Source Module, Light Source Assembly Having the Same and Display Device Having the Light Source Module - A light source module includes a power transmission substrate and a plurality of point light sources. The power transmission substrate has a plurality of dimming areas disposed along a first direction. The point light sources are spaced apart from each other in each dimming area along the first direction and receive driving power applied to each dimming area through the power transmission substrate and generate light. A spatial interval between the point light sources in the first direction is greater in dimming areas more distant from the center of the power transmission substrate than in dimming areas closer to the center of the power transmission substrate. | 10-15-2009 |
| 20090256493 | Driving circuit for display device, and test circuit and test method for driving circuits - A driving circuit, which drives a display panel in a voltage range between a high negative voltage and a high positive voltage, includes: an electric charge discharging circuit; and a test external terminal. The electric charge discharging circuit connects a first terminal supplied with the high negative voltage to a second terminal of a ground voltage in response to a drop of a power source voltage. The test external terminal is connected to the electric charge discharging circuit. The high negative voltage is supplied to the semiconductor substrate. The electric charge discharging circuit interrupts a connection between the first terminal and the second terminal based on a control signal from the test external terminal. | 10-15-2009 |
| 20090256494 | GaN-BASED SEMICONDUCTOR LIGHT-EMITTING ELEMENT, LIGHT-EMITTING ELEMENT ASSEMBLY, LIGHT-EMITTING APPARATUS, METHOD OF DRIVING GaN-BASED SEMICONDUCTOR LIGHT-EMITTING ELEMENT, AND IMAGE DISPLAY APPARATUS - A GaN-based semiconductor light-emitting element is provided and includes a first GaN-based compound semiconductor layer; an active layer having a multi-quantum well structure; and a second GaN-based compound semiconductor layer. At least one of barrier layers constituting the active layer is composed of a varying-composition barrier layer, and the composition of the varying-composition barrier layer varies in the thickness direction thereof so that the band-gap energy in a region of the varying-composition barrier layer, the region being adjacent to a boundary between a well layer disposed closer to the second GaN-based compound semiconductor layer and the varying-composition barrier layer, is lower than that in a region of the varying-composition barrier layer, the region being adjacent to a boundary between a well layer disposed closer to the first GaN-based compound semiconductor layer and the varying-composition barrier layer. | 10-15-2009 |
| 20090261749 | APPARATUS AND METHOD FOR AUTOMATICALLY TRIMMING AN OUTPUT PARAMETER OF AN ELECTRONIC BALLAST - An electronic ballast includes a microprocessor which is programmed to read a voltage value corresponding to an output of the electronic ballast, output a signal which controls an amount of power outputted by the electronic ballast in accordance with the voltage value, read an external voltage value, and select one of a trimming mode and a normal mode as an operating mode based on the external voltage value. The microprocessor is also programmed, when operating in the trimming mode, to set an internal reference value, compare the voltage value corresponding to the output of the electronic ballast with the internal reference value, trim an amount of power outputted by the electronic ballast to a resistor corresponding to an impedance of a High Intensity Discharge lamp by adjusting the signal based upon the comparison, and store a result of the signal adjustment. | 10-22-2009 |
| 20090261750 | Encoding device for light-emitting-diode lamp, lamp, and controlled lighting system - A controlled lighting system includes an encoding device and a lamp. The encoding device includes a rectifier for rectifying an AC voltage input to result in a rectified signal, and an encoder for generating an encoded signal from the rectified signal and display data. The encoded signal has consecutive signal regions with a waveform of a positive half-cycle of an AC sinusoidal wave or a low potential. The lamp includes a LED unit and a decoding device. The decoding device includes a direct current converter for extracting a direct current voltage from the encoded signal, a detecting circuit for extracting a wave signal from the encoded signal, a processor for generating decoded data related to a light-emitting operation according to the wave signal, and a driver for driving the LED unit according to the direct current voltage from the direct current converter and the decoded data from the processor. | 10-22-2009 |
| 20090267532 | DIMMABLE CONTROL CIRCUIT - The present invention relates to a dimmable control circuit, comprising: an ac power source; a transformer; a rectifier circuit; a dimmable control chip; a voltage dividing circuit; a dimmable switch; a first resistor; a second resistor; and a half bridge power driving circuit, capable of outputting signals to drive a fluorescent tube, characterized in that said dimmable switch has a coactive variable resistor connected in parallel with said first resistor and said second resistor, and both said first resistor and said second resistor have the negative resistance temperature coefficient to achieve low temperature startup and high temperature operation. | 10-29-2009 |
| 20090273300 | Variable Intensity LED Illumination System - A variable intensity LED illumination system is configured to provide a change in luminance versus input voltage that corresponds to a desired transfer function, such as the dimming characteristics of an incandescent lamp, which more closely resembles the response of the human eye. The system also advantageously provides overvoltage protection, increased brightness, energy efficiency, and significantly better longevity and ruggedness, compared to incandescent lamps. | 11-05-2009 |
| 20090278469 | METHOD OF LIGHTING HIGH PRESSURE MERCURY LAMP, LIGHTING DEVICE FOR THE SAME, LAMP SYSTEM AND PROJECTION DISPLAY UNIT - An object of the present invention is to provide a lighting method and the like that can prevent a lamp temperature of each individual high-pressure mercury lamp from being beyond a proper temperature range of a halogen cycle. The lighting method maintains a discharge of the high-pressure mercury lamp that has a function of the halogen cycle. The control is performed as follows. From when the high-pressure mercury lamp is lighted up to when a lamp voltage Vla reaches a first voltage value V | 11-12-2009 |
| 20090278470 | COLOR NAVIGATION SYSTEM - A system and method for color navigation through a CIELAB color space with coordinates hue (H), lightness (L), chroma (C), with intervals ΔH, ΔL, ΔC such that the perceptual color difference AE1Nv, defined according to the formula: AZW=̂{AL)2+{fc(H)−ACf+[AH)2, is constant for steps in direction C and L and for steps in direction H along boundary of color space. fc(H) is a proportionality factor between 0 and 1 depending on hue. For hue values between red (H | 11-12-2009 |
| 20090284167 | Dual Level Power Source For Compact Florescent Bulbs - A power supply for a compact florescent bulb has an EMC filtering circuit, a power level selection switch a controller and an output for the bulb which is the load for the power supply. The selector switch is used to cause the controller to selectively supply one of two power levels to the florescent bulb. | 11-19-2009 |
| 20090284168 | Recessed light ballast mount - A lamp ballast is provided for attachment to a fluorescent lamp fixture. The ballast is adapted to a direct low profile mounting on a junction box of the lamp fixture by a varying degree of recessed positioning. The ballast has a built-in niche for the recessed mounting and comprises a ballast circuit on a board; a package for enclosing the circuit board save electric wires from and to the ballast circuit at multiple sides including a top surface, bottom surface and sidewalls extending between the top and bottom surfaces; and a flange extending from the sidewalls of the package at a predetermined level between the top and bottom surfaces. Thus, the flange acts as a mounting bracket of the ballast for a varied degree of recessed mounting of the ballast on the lamp fixture. | 11-19-2009 |
| 20090284169 | Systems and Methods for Communicating in a Lighting Network - Systems and methods for communication between devices using a duty cycle of a signal while a device maintains operation responsive to the duty cycle are disclosed. A device receives a signal comprising a duty cycle within a time interval, the duty cycle comprising a plurality of portions and each of the plurality of portions comprising a duration of the duty cycle within the time interval. The device performs an operation responsive to the duty cycle and, in response to a detection of an instruction identified by at least one portion of the duty cycle, performs a function based on the instruction while maintaining the operation responsive to the duty cycle. The device performs operations responsive to duty cycles within time intervals of succeeding signals and performs functions based on instructions from the succeeding signals while maintaining the operation responsive to the duty cycles. | 11-19-2009 |
| 20090284170 | CIRCUITRY FOR PORTABLE LIGHTING DEVICES AND PORTABLE RECHARGEABLE ELECTRONIC DEVICES - A flashlight with a circuit for reducing the initial surge of current that is sent through the lamp filament when a flashlight is turned on is provided. The circuit reduces the stresses placed on the lamp bulb when it is turned on, thereby extending the life expectancy of the lamp bulb. A flashlight with an electronic switch is also disclosed. | 11-19-2009 |
| 20090289573 | MICROCONTROLLER BASED IGNITION IN HIGH FREQUENCY CERAMIC METAL HALIDE LAMPS - A high frequency ballast for a metal halide lamp comprises a controller, a switch, and an oscillator. The controller selectively enables and disables the oscillator via the switch to ignite the lamp. The switch selectively tunes and detunes an inductor of the oscillator by altering an inductance of the inductor. When the inductor is tuned, the oscillator oscillates and provides power to the lamp. When the inductor is detuned, the oscillator does not oscillate and does not provide power to the lamp. | 11-26-2009 |
| 20090289574 | Single-stage electronic ballast for a fluorescent lamp - The invention provides a single-stage electronic ballast for a fluorescent lamp, comprising a boost circuit and a load unit. The boost circuit includes a first inductor, a first capacitor, a first diode and at least a switch, wherein the positive terminal of the first diode is connected to the first inductor, and the negative terminal of the first diode is connected to the at least a switch. The load unit includes at least a fluorescent lamp, two terminals of the first capacitor are respectively connected to the at least a load unit, and the at least a switch is connected to the load unit for controlling its turning-on and turning-off, wherein the boost circuit and the load unit share the at least a switch. | 11-26-2009 |
| 20090289575 | Opto-Isolator Multi-Voltage Detection Circuit - An opto-isolator multi-voltage detection circuit is capable to handle a wide range of input voltages ranging from about 9 volts DC to about 240 volts AC includes an input voltage, an opto-isolator, a rectifier, a voltage divider, first and second transistors, and a DC to DC converter. The voltage divider operatively coupled to the first and second transistors is capable of evenly dividing the input voltage across the first and second transistors. The DC to DC converter operatively coupled to the transistors, the voltage divider, and the opto-isolator is capable of maintaining an output current from the rectifier. The use of the DC to DC converter, the voltage divider, and the transistors provide benefit of reducing a power dissipated throughout the entire circuit. | 11-26-2009 |
| 20090289576 | LED LIGHT OUTPUT LINEARIZATION - A system and method for producing a flattened characteristic for LED luminous output. The system may include an array containing one or more light emitted diodes, a power source connected to the LED array providing drive current to the LED array, a timer connected to a controller wherein the timer logs the on-time of the LED array and communicates the LED array on-time to the controller, and a controller connected to the power source wherein the controller adjusts the intensity of the drive current provided to the LED array based on the on-time data received from the timer such that the resultant relative luminous output is approximately equal to the initial relative luminous output. | 11-26-2009 |
| 20090295305 | LED DRIVER CIRCUIT - An LED driver circuit comprises a buck-boost converter circuit and a resistor. The cathode terminal of the LED is connected to the output terminal of the buck-boost converter circuit. The anode terminal of the LED is connected to a reference voltage. The resistor connects the anode terminal of the LED to a power input. | 12-03-2009 |
| 20090295306 | LED DRIVE CIRCUIT - Provided is an LED drive circuit capable of using a switching regulator IC having low breakdown voltage even when a power supply voltage is high. The LED drive circuit includes a voltage clamp circuit for clamping the power supply voltage to an operating voltage of the switching regulator IC, converts an output voltage of a current detecting circuit for detecting a current flowing through an LED into the operating voltage of the switching regulator IC, and outputs the operating voltage. | 12-03-2009 |
| 20090309510 | LED DRIVER CIRCUIT CAPABLE OF ADJUSTING OUTPUT CURRENT - An LED driver circuit includes a power controller, a voltage regulator, a detecting resistor, a light emitting device, and a voltage detecting circuit. The voltage detecting circuit has a first input end connected to a higher potential end of the detecting resistor, and a second input end thereof is connected to a lower potential end of the detecting resistor. The output end of the voltage detecting circuit is connected to a feedback end of the power controller so as to output a detected voltage signal to the power controller for adjusting the output voltage and supplying a stable and proper value of current to the light emitting device. The voltage detecting circuit is a differential amplifier capable of detecting the voltage difference between the detecting resistor and amplifying it as a feedback to the power controller. Therefore, the output current from the power controller is precisely controlled. | 12-17-2009 |
| 20090309511 | Dimming fluorescent ballast system with shutdown control circuit - A ballast system for, and a method of, controlling illumination of a lamp, include a dimmer switch having an actuator settable at different settings corresponding to different output voltages across the dimmer switch, a dimming electronic ballast operatively connected to an electrical power source and to the dimmer switch for dimming the lamp upon setting of the actuator, and a shutdown circuit, preferably provided in the ballast, for measuring the output voltages across the dimmer switch, and for automatically powering the ballast off and, in turn, for turning the lamp off when one of the voltages measured by the shutdown circuit does not exceed a reference voltage that corresponds to one of the settings of the actuator. | 12-17-2009 |
| 20090309512 | Switchegear, system for controlling a lamp, and light control system for a building comprising at least one light - The invention introduces the concept of priorities into DALI technology. A switchgear ( | 12-17-2009 |
| 20090309513 | METHOD OF CONTROLLING THE COLOUR OF THE LIGHT OUTPUT OF A LAMP - The invention describes a method of controlling the colour of the light output of a lamp ( | 12-17-2009 |
| 20090309514 | Light emitting elements, light emitting devices including light emitting elements and methods for manufacturing such light emitting elements and/or devices - An emitting device includes a first electrode on a base substrate, a second electrode on the base substrate, a third electrode on the base substrate, an emitting structure on and/or at a same level as the first electrode, a first pattern on the base substrate being electrically connected to the first electrode, and a plurality of second patterns on the base substrate, wherein at least one of the second patterns is arranged on a first side of the first pattern and is electrically connected to the second electrode and at least another one of the second patterns is arranged on a second side of the first pattern and is electrically connected to the third electrode, the first side opposing the second side. | 12-17-2009 |
| 20090315473 | LIGHT-EMITTING DEVICE DRIVING CIRCUIT AND METHOD THEREOF - A light-emitting device driving circuit and a method thereof are provided. A terminal of a light-emitting device is coupled to a supply voltage and a cathode of a diode via an inductor, and the other terminal is coupled to an anode of the diode. The light-emitting device driving circuit includes a switch, a current-sensing circuit, and a switch control circuit. The current-sensing circuit is coupled to the anode of the diode via the switch to determine whether or not to generate a turning-off control signal according to a conducting-current value of the switch. The switch control circuit controls an on/off state of the switch, and turns off the switch according to the turning-off control signal. Besides, the switch control circuit compares the conducting-current value with a reference-current value to generate a comparing result to dynamically adjust a time length of turning off the switch accordingly. | 12-24-2009 |
| 20090315474 | DISCHARGE LAMP LIGHTING APPARATUS - A discharge lamp lighting apparatus includes a DC/DC converter for converting an input direct voltage to a direct voltage of a different voltage value than the input direct voltage by switching and then outputting the converted direct voltage; a discharge lamp driver for converting the output direct voltage, which is supplied from the DC/DC converter, to a voltage suitable for driving a discharge lamp; a pulse width controller for generating a pulse width controlled switching control signal based on a reference pulse and then supplying the switching control signal to the DC/DC converter; and a microprocessor for controlling the apparatus as a whole and supplying to the pulse width controller a pulse width control signal and the reference pulse in synchronism with the pulse width control signal. | 12-24-2009 |
| 20090315475 | LIGHT SOURCE APPARATUS AND LIGHT SOURCE ADJUSTING MODULE - A light source apparatus and a light source adjusting module are provided. The light source apparatus includes a power supply, a phase modulator, an electrical transformer, a light source adjusting module and a light-emitting device. The power supply provides a first AC voltage signal. The phase modulator receives the first AC voltage signal and adjusts a conducting phase of the first AC voltage signal to generate a modulated AC voltage signal. The electrical transformer transforms the modulated AC voltage signal to generate a second AC voltage signal. The light adjusting module generates a luminance adjusting signal according to a state of the second AC voltage signal. The light-emitting device receives the luminance adjusting signal to generate a corresponding light source. | 12-24-2009 |
| 20090315476 | DEVICE FOR GENERATING LIGHT WITH A VARIABLE COLOR - An illumination system ( | 12-24-2009 |
| 20090322247 | Dimming buck type LED driving apparatus - A dimming buck type light emitting diode (LED) driving apparatus includes a main switch controlling a driving current flowing into an LED; a current detector detecting a driving current flowing into the LED; a power level determination unit determining a level of the driving power; a dimming capacitor for dimming control; a dimming control unit controlling charging and discharging of the dimming capacitor according to a power level determination signal and an enable signal; a reset circuit unit generating a reset signal according to a detection voltage from the current detector and a voltage of the dimming capacitor; a pulse generation unit generating a pulse signal; and a latch set by the pulse signal of the pulse generation unit and reset by the reset signal of the reset circuit unit to generate a switching signal, and turning on and off the main switch using the switching signal. | 12-31-2009 |
| 20090322248 | LED DRIVING CIRCUIT AND LIGHT EMITTING DIODE ARRAY DEVICE - There is provided an LED driving circuit. The LED driving circuit according to an aspect of the invention may include: at least one ladder circuit including: (n−1) number (here, n is a positive integer satisfying n≧2) of first branches provided between first and second junction points, and connected in-line with each other by n number of first middle junction points, (n−1) number of second branches arranged in parallel with the first branches, and connected in-line with each other by n number of second middle junction points between the first and second junction points, and n number of middle branches connecting m-th first and second middle junction points to each other, wherein at least one LED device is disposed on each of the first, second, and middle branches. Here, the number of LED devices included in each of the first and second branches is greater than the number of LED devices included in each of the middle branches. | 12-31-2009 |
| 20090322249 | METHOD FOR CONTROLLING A HIGH-FREQUENCY TRANSFORMER - A method for controlling a high-frequency transformer by which the acoustic transformer noises occurring during intermittent operation (burst operation) are reduced. This is achieved according to the invention by halving a length of the first and the last pulse of an AC voltage pulse train or the first and the last half-wave in the ON interval (Tn). This goes to avoid magnetizing peaks in the core that cause a major part of the background noise. | 12-31-2009 |
| 20100001657 | System and Method for Driving LED with High Efficiency in Power Consumption - A system and method for driving a LED is disclosed. The system is switched in turn between a constant-current mode circuit and a constant-voltage mode circuit. Accordingly, the forward voltage of the LED could be maintained constant, and the efficiency in power consumption could be substantially increased. | 01-07-2010 |
| 20100001658 | LIGHT EMITTING DIODE CIRCUIT AND LIGHT EMITTING DIODE DRIVING CIRCUIT - A light-emitting diode circuit and a light-emitting diode driving circuit are disclosed. The light-emitting diode driving circuit includes the DC-DC converter and the switch circuit. The DC-DC converter converts a DC voltage to the driving voltage for driving the light-emitting diode. One end of the switch circuit is electrically connected to the DC-DC converters and a cathode of the light-emitting diode, the other end of the circuit switching is electrically connected to a ground terminal. The switch circuit controls the connection between the DC-DC converters, the Light-emitting diodes and the ground terminal based on the control signal. | 01-07-2010 |
| 20100001659 | SEMICONDUCTOR LIGHT SOURCE DRIVING APPARATUS AND SEMICONDUCTOR LIGHT SOURCE DRIVING METHOD - The semiconductor light source driving apparatus has: a semiconductor light source that is driven by a current; a voltage source that drives the semiconductor light source; an output voltage controlling circuit that controls a drive current value for driving the semiconductor light source by controlling an output voltage of the voltage source; an output current detecting circuit that detects an output current of the semiconductor light source; a current command circuit that specifies a reference value of a drive current which is applied to the semiconductor light source; a current comparing circuit that compares the output current detected by the output current detecting circuit and the reference value specified by the current command section; and an impedance detecting circuit that detects an impedance of the semiconductor light source. The output voltage controlling circuit controls the output voltage of the voltage source based on an output of the current comparing circuit and an output of the impedance detecting circuit. | 01-07-2010 |
| 20100007286 | POWER SUPPLY SYSTEM AND METHOD - A power supply system and a method for providing power supply to electrical equipment from conventional lighting circuits in buildings are disclosed. The invention is intended to provide power supply to electrical equipment, without the need of conventional alternating current (AC) power supply power socket outlets. Instead, it obtains electrical power from existing lighting points. An embodiment of the invention is disclosed for achieving this without disrupting normal operation of turning on and off existing lighting sources. The present invention consists a wall switch unit and a lighting source control unit. The wall switch unit control s the level or waveforms of AC voltage supply to the lighting source control unit while the lighting source control unit detects the AC voltage level or waveforms for switching on or off a lighting source. Additionally, regardless of whether the lighting source is switched on or off, an uninterrupted power supply is derived from the lighting source control unit with this power supply being usable for electrically powering external electrical equipment connected thereto. | 01-14-2010 |
| 20100013402 | System And Method For Controlling A Matrix Of Light Emitting Diodes And Light Provided Therewith - A system and method for controlling a matrix of light emitting diodes (LED) connected to an input line comprises a power converter for connecting to the matrix of LEDs and to the input line therebetween and for receiving from the input line an input current and an input voltage characterized by a shape and a frequency and for providing a direct current (D.C.) output for powering up the LEDs, yielding an operating current through the LEDs. The power converter includes a first current sensor for sensing the input current and a second current sensor for sensing the operating current. The system further comprises a controller for connecting to both the input line and to the power converter. The controller includes a voltage sensor for sensing the input voltage and a pre-regulator i) for receiving the operating current, the input current and the input voltage, ii) for biasing the operating current towards a target current value, and iii) for regulating the power converter to cause the input current to follow the shape and frequency of the input voltage, yielding a unity power factor and minimizing the input current harmonic distortion. The present method and system allows maximizing the energy savings, controlling current flowing in the diodes so as to obtain the maximum flux of light with the minimum energy and also allows meeting all safety, EMI, reliability and robustness requirements. | 01-21-2010 |
| 20100013403 | Step-Up Driver With Minimal Switching Frequency - The invention relates to an electronic ballast comprising a step-up converter for operating a discharge lamp. The electronic ballast is embodied in such a way as to disconnect a switching element (T | 01-21-2010 |
| 20100013404 | OPTICAL ELEMENT DRIVING CIRCUIT - An optical element driving circuit flexibly configures energy sources to cause illumination with an optical output element, such as a flash lamp. The energy sources include an illumination capacitor and a capacitive voltage divider circuit coupled with the optical output element. The illumination capacitor may be charged to a first voltage and a boost capacitor of the capacitive voltage divider circuit may be charged to a second voltage that is a fraction of the first voltage. The optical element driving circuit also includes a triggering circuit coupled with the capacitive voltage divider circuit. The triggering circuit is configured to place a sum of the first voltage and the second voltage across the optical output element. | 01-21-2010 |
| 20100013405 | VARIABLE LOAD CIRCUITS FOR USE WITH LIGHTING CONTROL DEVICES - A variable load circuit ( | 01-21-2010 |
| 20100013406 | TEXTILE FOR CONNECTION OF ELECTRONIC DEVICES - A textile ( | 01-21-2010 |
| 20100013407 | Circuit Arrangement and Method for Operating a High-Pressure Discharge Lamp - A circuit arrangement for operating a high-pressure discharge lamp, comprising at least one first electronic switch and one second electronic switch in a half-bridge arrangement; a supply voltage terminal for supplying the half-bridge arrangement with a DC voltage signal; a load circuit, which comprises a lamp inductor and is coupled firstly to the half-bridge center point and secondly to at least one terminal for connecting the high-pressure discharge lamp; a drive circuit for providing at least one first and one second drive signal for the first electronic switch and the second electronic switch, the drive circuit being adapted to provide the first and the second drive signal in such a way that the clock thereof is firstly swept between a first and a second frequency; wherein the drive circuit is furthermore adapted to modulate the first and the second drive signal with a predeterminable third frequency, with the modulation with the predeterminable third frequency being single-tone frequency modulation, with the result that, in the amplitude spectrum of the first and the second drive signal, at least one first, one second and one third spectral line appear, the first spectral line corresponding to the instantaneous frequency of the swept clock, and the second and the third spectral lines, in terms of absolute value, appearing at an interval with respect to the predeterminable third frequency, symmetrically with respect to the first spectral line, and that, in the power spectrum of the signal, at the terminal for connecting the high-pressure discharge lamp, a spectral line at the predeterminable third frequency results. | 01-21-2010 |
| 20100013408 | DIMMING CIRCUIT FOR CONTROLLING ELECTRICAL POWER - A dimming circuit includes an isolated DC voltage source that is selectively coupled to a switch through which power is supplied from a source to a load. In a disclosed example, the switch comprises two MOSFETs. The isolated DC voltage source is selectively coupled directly to the gate and source of the MOSFETs to set them into an operative state for providing power to the load. A controller controls another switch that is operative to selectively control when the isolated DC voltage source is coupled to the switch. | 01-21-2010 |
| 20100019686 | DEVICES AND METHODS FOR GENERATING BEAM PATTERNS WITH CONTROLLABLE INTENSITY, COLOR, OR INFORMATION CONTENT - Described herein are systems and methods for controlling an illumination area as a function of time, location, or position. The systems and methods may generate illumination patterns having aesthetic effects or conveying information. In one example, a device for selectively controlling a projected illumination beam pattern of visible or non-visible illumination includes a mirror for receiving and reflecting light from an illumination source, where the mirror is operable to move in an oscillating motion, and a controller for generating time varying signals for causing the illumination source to vary a characteristic of the light (e.g., color, intensity, shape, or combinations thereof) from the illumination source and produce a predetermined illumination pattern. The controller (which may include suitable logic such as software, firmware, hardware, or combinations thereof) may operate to modulate a characteristic of the illumination source over time based on the orientation of the mirror and the predetermined illumination pattern. | 01-28-2010 |
| 20100019687 | LIGHT EMITTING DIODE DRIVING APPARATUS - A light emitting diode driving apparatus | 01-28-2010 |
| 20100019688 | Inverter And Lamp Driver Including The Same - The present invention relates to an inverter and a lamp driver having the same. The inverter includes a first switch having a first body diode, a second switch having a second body diode, a transformer including a first side coil in which a first current and a first voltage are generated according to switching operations of the first switch and the second switch and a second side coil having a predetermined winding ratio with respect to the first side coil, and a controller for controlling each switching operation of the first switch and the second switch. The controller turns on one of the first switch and the second switch corresponding to one of the first body diode and the second body diode, and a current flows through the first switch and the second switch during a dead time. | 01-28-2010 |
| 20100026203 | LED DRIVER WITH FRAME-BASED DYNAMIC POWER MANAGEMENT - Disclosed are example techniques for frame-based power management in a light emitting diode (LED) system having a plurality of LED strings. A voltage source provides an output voltage to drive the LED strings. An LED driver generates a frame timing reference representative of the frame rate or display timing of a series of image frames to be displayed via the LED system. An update reference is generated from the frame timing reference. The LED driver monitors one or more operating parameters of the LED system. In response to update triggers marked by the update reference, the LED driver adjusts the output voltage of the voltage source based on the status of each of the one or more monitored operating parameters (either from the previous update period or determined in response to the update trigger), thereby synchronizing the updating of the output voltage to the frame rate (or a virtual approximation of the frame rate) of the video being displayed. | 02-04-2010 |
| 20100026204 | ORGANIC LIGHT EMITTING DIODE ARRANGEMENT - Organic light emitting diode arrangement Organic light emitting diode arrangements ( | 02-04-2010 |
| 20100033107 | UNIVERSAL ELECTRONIC BALLAST FOR OPERATING HG-FREE AND HG-CONTAINING DISCHARGE LAMPS - The invention discloses a method and/or electronic ballast, which can be universally used for a plurality of types of discharge lamps and which performs an orientation mode for detecting the lamp type once the lamp is switched on, whereby the lamp type is detected | 02-11-2010 |
| 20100033108 | LIGHT CONTROL DEVICE - This invention refers to electricity and can be applied for wire and wireless remote control (RC) of target illumination equipment or different lights, for example tactical under-barrel light or laser designator mounted on small arms. The technical results achieved at application of the invention are the following: application of light remote power on/off, application of light brightness remote control, application of light lamp battery power-safe mode, application of light operation modes remote control. The essence of the invention is in the fact that the light control device consists of electronic tailcap circuit and remote control device circuit. The electronic tailcap circuit includes light lamp, light lamp battery, electronic switch, voltage stabilizer, voltage devisor, analog-to-discrete converter of the electronic tailcap circuit, electronic tailcap circuit microcontroller, electronic tailcap circuit memory module, electronic tailcap circuit control button, electronic tailcap circuit radio transceiver, electronic tailcap circuit antenna. The remote control device circuit includes: remote control device circuit battery, remote control device circuit control button, remote control device circuit analog-to-discrete converter, remote control device circuit microcontroller, remote control device circuit memory module, remote control device circuit radio transceiver, remote control device circuit antenna. | 02-11-2010 |
| 20100039043 | ADVANCED LOW VOLTAGE LIGHTING SYSTEM - Disclosed is a lighting system supporting multiple independently controlled zones utilizing a plurality of semiconductor switches coupled to a plurality of transformers to produce a non-sinusoidal power output and controlled by a digital controller that receives feedback from each zone in order to auto-sense the proper voltage for a plurality of connected loads. | 02-18-2010 |
| 20100039044 | LIGHT-EMITTING COMPONENT AND ITS MANUFACTURING METHOD - In a light emitting component, a resistor element is formed on the back surface of a substrate and its resistance value is adjusted to make the light intensity of a light emitting element (LED) in a predetermined range. A constant electric current circuit comprised of the resistor element and a transistor supplies the constant electric current to an LED, and the LED and the transistor are formed on a unit insulating substrate. In the case where the unit insulating substrate is rectangular in shape, one pair of opposite sides are x in length, the other pair of opposite sides are y in length and the ratio value of x/y is in the range of 1-1.25. Further, this light emitting component is provided with two resistor elements and both resistor elements are subjected to a resistor value adjustment. | 02-18-2010 |
| 20100039045 | LED Module and Method for Operating at Least one LED - An LED module ( | 02-18-2010 |
| 20100039046 | LED READING LIGHT AND METHOD FOR OPERATING AN LED READING LIGHT - The LED reading light, in particular for a passenger transportation vehicle such as, for example, an airplane, a bus, or a ship, is provided with two power supply connections ( | 02-18-2010 |
| 20100045202 | Interface Device for Low Power LED Airfield Lighting System - An interface device for driving a light emitting diode including an isolation and step down device, a rectifier, and output terminals is provided. | 02-25-2010 |
| 20100045203 | ILLUMINATION DEVICE - An illumination device includes a first circuit board, a second circuit board and a lighting unit. The first circuit board has a controlling circuit, a switching circuit and a protection circuit. The controlling circuit is electrically connected to the switching circuit and the protection circuit, respectively. The second circuit board has a transforming circuit and is electrically connected with the first circuit board. The lighting unit and the transforming circuit are electrically connected. | 02-25-2010 |
| 20100045204 | SELF-OSCILLATING SWITCH CIRCUIT FOR USE IN A SWITCHING DC-DC CONVERTER - A self-oscillating switch circuit for use in a switching DC-DC converter that is enabled to use amplitude modulation dimming for dimming a load such as a LED is provided. The dimming may be used to provide two or more distinct light output levels, which may be used in automotive combined tail and break lighting, for example. The self-oscillating switch circuit comprises an output terminal (Ton P | 02-25-2010 |
| 20100052561 | METHOD FOR DRIVING AN INVERTER OF A GAS DISCHARGE SUPPLY CIRCUIT - A method of controlling an inverter ( | 03-04-2010 |
| 20100052562 | Remote-Control Brightness Adjusting Device - A remote-control brightness adjusting device comprises an emitter and a receiver. The emitter is provided with a switch circuit including a brightness switch and an on-off switch, and a signal emitting circuit. The receiver is provided with a signal receiving circuit, a converter, a brightness control circuit and an on-off control circuit. The emitter and the receiver utilize the signal emitting circuit and the signal receiving circuit to perform wireless transmission. When the brightness switch of the switch circuit is triggered, the change-over switch of the converter will be switched to utilize the brightness control circuit to adjust the brightness of the load. When the on-off switch of the switch circuit is triggered, the change-over switch of the converter will be switched to utilize the on-off control circuit to control the on-off of the load. | 03-04-2010 |
| 20100052563 | Controller of Light Dimming and Overload Protection - A solution for mitigating interference from electrical signals emitted from a fluorescent lamp. The solution employs an electronic ballast and an electromagnetic filtering circuit. The ballast supports dimming of the fluorescent lamp. At the same time, the electromagnetic filtering circuit in communication with the electronic ballast mitigates emission of electronic disturbances from the lamp. | 03-04-2010 |
| 20100052564 | BACKLIGHT ASSEMBLY AND METHOD OF DRIVING THE SAME - A backlighting assembly for an LCD display is divided into a plurality of selective dimming areas each having a respective plurality of light generating blocks. A plurality of driving units supply power to the light generating blocks. The light generating blocks are grouped into light source groups. Each of the driving units supplies power to at least one light generating block in a first light source group and a second light generating block in a second light source group but not to all the light generating blocks in any one light source group. Light generating blocks connected to a same driving unit may be distributedly arranged to be nonadjacent to one another. Plural driving units are used to fully power a brightly lit one dimming area, thereby reducing the loads on the individual driving units and preventing overheating. | 03-04-2010 |
| 20100052565 | LED LIGHTING DEVICE AND LIGHTING EQUIPMENT - An LED lighting device includes light emitting diode, a current control circuit having a first series circuit of first and second switching elements, a second series circuit of third and fourth switching elements, and a condenser, which is configured so that the first and second series circuits are parallel connected and the condenser is connected between a connection point of the first and second switching elements and a connection point of the third and fourth switching elements, and a control circuit for alternatively on-off controlling a pair of the first and fourth switching elements and a pair of the second and third switching elements. | 03-04-2010 |
| 20100052566 | LED LIGHTING DEVICE AND LIGHTING EQUIPMENT - An LED lighting device including a DC power source circuit, a high frequency generation circuit which includes an inverter circuit having switching elements and a resonance circuit having a series-connected inductor and condenser, in which the switching elements are on-off controlled by a no-load resonance frequency of the resonance circuit, and DC voltage input from the DC power source circuit is converted into a high frequency AC voltage, a rectification smoothing circuit having an input side which is connected between both edges of the condenser or both edges of the inductor; and a light emitting diode series connected to an output side of the rectification smoothing circuit. | 03-04-2010 |
| 20100060186 | MEASUREMENT CIRCUIT FOR AN ELECTRONIC BALLAST - An electronic ballast for driving a gas discharge lamp comprises a measurement circuit for measuring a lamp current flowing through the lamp and a lamp voltage produced across the lamp. The ballast comprises a first winding magnetically coupled to a main transformer of an inverter circuit, and a second winding magnetically coupled to a resonant inductor of a resonant tank circuit. The first and second windings are coupled in series electrical connection to generate a voltage representative of the magnitude of the lamp voltage. The ballast further comprises a current transformer having primary windings coupled in series with the electrodes of the lamp. The measurement circuit integrates the current conducted through secondary windings of the current transformer only during every other half-cycle of the lamp voltage to generate a control signal representative of the magnitude of the lamp current that is in-phase with the lamp voltage. | 03-11-2010 |
| 20100060187 | HYBRID LIGHT SOURCE - A hybrid light source comprises a high-efficiency lamp, for example, a fluorescent lamp, and a low-efficiency lamp, for example, a halogen lamp. A control circuit individually controls the amount of power delivered to each of the high-efficiency lamp and the low-efficiency lamp, such that a total light output of the hybrid light source ranges throughout a dimming range from a minimum total intensity to a maximum total intensity. The high-efficiency lamp is turned off and the low-efficiency lamp produces all of the total light intensity of the hybrid light source when the total light intensity is below a transition intensity. The low-efficiency lamp is controlled such that the correlated color temperature of the hybrid light source decreases as the total light intensity is decreased below the transition intensity. The hybrid light source is characterized by a low impedance throughout the dimming range. | 03-11-2010 |
| 20100060188 | LIGHTING CONTROL CIRCUIT - The present invention is directed to an LED light system that comprises a control circuit that operates on a pair of 1.5 volt batteries but which generates an operational voltage in excess of 3.0 volts. The lighting system includes a boost circuit that raises the operational voltage of the system to 5.0 volts, and an output circuit connected to a plurality of LEDs that controls their function. | 03-11-2010 |
| 20100060189 | LED DRIVER CIRCUIT - An emergency-lighting device for operating a light-source, in particular an LED, comprises an energy storage unit, a charging circuit, to be supplied with a mains supply voltage (U | 03-11-2010 |
| 20100060190 | LIGHT-EMITTING DIODE DRIVING CIRCUIT - A light-emitting diode driving circuit includes an AC/DC converting circuit for converting an AC power source into a DC power source; a switching element having an input contact connected to the AC/DC converting circuit; a control unit for outputting a control signal to the switching element at a set frequency to turn on or turn off the switching element, wherein a first resistor is disposed between a power contact thereof and the input contact of the switching element; a second resistor for enabling the control unit to detect a half-cycle voltage of the DC power source; a capacitor having a first end connected to the power contact, and a second end connected to a ground contact of the control unit; and an inductor having a first end connected to the ground contact and the second end of the capacitor, and a second end connected to a light-emitting diode. | 03-11-2010 |
| 20100060191 | ELECTRIC-DISCHARGE-LAMP LIGHTING APPARATUS - An electric-discharge-lamp lighting apparatus including: an inverter that converts a DC voltage to a high-frequency voltage; an insulating transformer for low voltage with a primary winding connected to an output end of the inverter; and a plurality of step-up transformers. In the electric-discharge-lamp lighting apparatus, a first series circuit formed by connecting primary windings of the plurality of step-up transformers in series to one another is connected to a secondary winding of the insulating transformer. In addition, one or more electric discharge lamps are connected respectively to secondary windings of the step-up transformers. | 03-11-2010 |
| 20100060192 | Circuit for Driving Light Sources and Related Method - A circuit for supplying a light source (L) such as a high flux (HF) LED with Pulse Width Modulation (PWM) dimming capability includes: a rectifier ( | 03-11-2010 |
| 20100060193 | METHOD AND CIRCUIT ARRANGEMENT FOR INCREASING THE DIELECTRIC STRENGTH OF METAL OXIDE TRANSISTORS AT LOW TEMPERATURES - A method and circuit arrangement for increasing the dielectric strength of at least one metal oxide transistor at low temperatures is described. Various embodiments include heating the metal oxide transistor prior to the application of a voltage in the vicinity of a breakdown voltage of the metal oxide transistor. | 03-11-2010 |
| 20100066264 | PORTABLE TERMINAL, METHOD OF DRIVING CONTROL OF LIGHT EMITTING BODY USED FOR THE SAME AND PROGRAM THEREOF | 03-18-2010 |
| 20100066265 | DISCHARGE LAMP LIGHTING DEVICE AND PROJECTOR - A thyristor and an auxiliary resistor having one end connected to a gate of the thyristor are connected in parallel with a resistor connected in series with a lamp. A resistance value of internal equivalent resistance of the thyristor in an on-state is smaller than a resistance value of the resistor. The resistor absorbs a rush current at a lighting time. Then, a current flows between an anode and a cathode of the thyristor. | 03-18-2010 |
| 20100066266 | Led bulb, light emitting device control method, and light emitting device controller circuit with dimming function adjustable by AC signal - The present invention discloses a light emitting device control method for adjusting the brightness of the light emitting device by an AC signal, comprising: receiving a signal having a turn ON angle and converting the signal to a DC signal; obtaining an average of the DC signal level, the average being a function of the turn ON angle; determining a reference voltage of a current source circuit according to the average of the DC signal level; and controlling a current flow through the light emitting device by the current source circuit. | 03-18-2010 |
| 20100072914 | DIMMING CIRCUIT FOR DISCHARGING LAMP CAPABLE OF TURNING OFF UNDER A LOW POWER CONDITION - A dimming circuit includes a resonant unit, a rectification unit, a half-bridge output unit, a first switch device and a second switch device, and a selection unit. The rectification unit is connected to the resonant unit. The half-bridge output unit includes a first electric-controlled switch and a second electric-controlled switch in series. The first and second switch devices are connected to the first and second electric-controlled switches. The selection unit may turn on the first switch device and the second electric-controlled switch when a potential is rising that turns on the discharging lamp and turn off the second switch device and keep turning on the second switch device when the discharging lamp is lighting. The selection unit further turns on the second switch device to turn off the second electric-controlled switch for turning off the discharging lamp in a low power condition. | 03-25-2010 |
| 20100072915 | Boost driver circuit with fast discharging function - The present invention discloses a boost driver circuit which converts an input voltage to an output voltage and supplies it to a load, the boost driver circuit comprising: a power transistor electrically connected with a node between the input voltage and the output voltage; a pulse width modulation driver circuit for controlling the operation of the power transistor; an output node electrically connected with the output voltage; a feedback node electrically connected with the load; a low voltage transistor electrically connected with the feedback node; and a clamp and fast discharge circuit electrically connected with the feedback node for discharging the feedback node when the voltage at the feedback node is higher than a predetermined voltage. | 03-25-2010 |
| 20100072916 | TOUCH SENSOR DEVICE - Provided is a touch sensor device including: at least one terminal connected to at least one contact pad; at least one common terminal; at least one light emitter connected between the common terminal and the terminal; and a touch sensor and light-emission controller unit connected to the common terminal and the terminal, and when a touch is sensed by the contact pad, controlling a corresponding light emitter to emit light. | 03-25-2010 |
| 20100072917 | System for Control of Ballast Illumination in Step Dimming and Continuous Dimming Modes - A system for controlling ballast illumination includes providing power to a light ballast power stage, driving a ballast lamp to a pre-determined ballast lamp illumination in response to the power stage receiving power, and actuating a level switch to drive the ballast lamp from the pre-determined ballast lamp illumination to a first field-programmed ballast lamp illumination. | 03-25-2010 |
| 20100079080 | Gamma Generator System and Method Adaptable for Backlight Control - A gamma reference voltage generating system and method adaptable for backlight control is disclosed. A gamma reference voltage generator adaptively generates an analog gamma reference voltage under the control of a digital control signal. The digital control signal is specifically arranged to accordingly level-up an upper limit of a gamma curve, thereby improving brightness loss. | 04-01-2010 |
| 20100079081 | Light-Emitting Diode (LED) Driver and Controller - Apparatuses, methods, systems, and circuits for light-emitting diode (LED) control are disclosed. In one embodiment, an LED control circuit can include a first pin receiving an input voltage supply; a second pin receiving a primary signal from a primary winding of a transformer coupled to the LED; a third pin coupled to a ground supply; and logic configured to estimate an output current and/or output voltage at the LED coupled to a secondary winding of the transformer from the input voltage supply and the primary signal. | 04-01-2010 |
| 20100079082 | Light-Emitting Element Driving Control Circuit - A light-emitting-element-driving-control circuit comprising: a control circuit to turn on or off a transistor based on an input-control signal, the transistor being connected in series with a light-emitting element and an inductor connected in series and controlling increase and decrease of a driving current of the light-emitting element; a maximum-value-detection circuit to detect a maximum value of the driving current; and a control-signal-generation circuit to generate the control signal for turning on the transistor to increase the driving current at a speed corresponding to a level of a power-supply voltage when the driving current is smaller than the maximum value and turning off the transistor to be kept for a predetermined period to decrease the driving current at a speed corresponding to a level of a forward voltage of the light-emitting element when the driving current reaches the maximum value, based on a detection result of the maximum-value-detection circuit. | 04-01-2010 |
| 20100084990 | Dimmable LED lamp - An LED lamp utilizes AC power and bidirectional LED chips to provide dimming capabilities. The dimming capabilities of the lamp reduce the junction temperature of the LEDs on the bi-directional LED chips and thus prolong the life expectancy of the LED lamp. | 04-08-2010 |
| 20100084991 | Dimming Control Circuit - The present invention discloses a dimming control circuit, comprising: an input terminal for receiving an input signal; an analog and digital dimming circuit receiving the input signal, wherein the analog and digital dimming circuit provides an analog dimming function when a voltage level of the input signal is between a predetermined lower limit and a predetermined upper limit, and a digital dimming function when the voltage level of the input signal switches above and below the predetermined lower limit, and wherein the analog and digital dimming circuit generates an analog signal when the voltage level of the input signal is above the predetermined lower limit; and a power circuit for supplying an output current in correspondence to the analog signal generated by the analog and digital dimming circuit. | 04-08-2010 |
| 20100084992 | INTENSITY CONTROL AND COLOR MIXING OF LIGHT EMITTING DEVICES - The present disclosure presents systems and methods for controlling light intensity and color mixing of light emitted by lighting devices. A controller may use a setting for an intensity of light and an instruction to generate, for a remote lighting device, a signal comprising the instruction and a duty cycle within a time period of the signal that corresponds to the setting for the intensity of light. The signal may comprise a digital pattern corresponding to at least a portion of the instruction. The remote lighting device may determine the duty cycle of the time period of the received signal based on a sum of durations of time for which the signal within the period comprises a high value. The remote lighting device may establish intensity of the light emitted based on the duty cycle while implementing an action based on the identified instruction. | 04-08-2010 |
| 20100090614 | CURRENT-REGULATED LIGHT EMITTING DEVICE FOR VEHICLE USE - A current-regulated light emitting device for vehicle use includes a light emitting unit and a current limiting unit. The current limiting unit includes first and second switches and first and second bias units. The first switch is for making and breaking an electrical circuit between the light emitting unit and an electric power source. The first bias unit is for causing the first switch to conduct so as to activate the light emitting unit when the first bias unit receives a drive voltage from the electric power source. The second bias unit is for causing the second switch to conduct when amount of current flowing through the first switch exceeds a predetermined threshold, thereby turning off the first switch to interrupt current flow through the light emitting unit. | 04-15-2010 |
| 20100090615 | Dimming circuit for controlling luminance of light source and the method for controlling luminance - The present invention provides a dimming circuit for controlling the luminance of a light source and the method for controlling luminance. The dimming circuit comprises an inverter circuit and a driving circuit. The inverter circuit is electrically coupled to a light source to be controlled, to convert a direct current (DC) power input into an alternating current (AC) power. The inverter circuit comprises a transformer, a capacitor connected in parallel to the transformer, a plurality of switches located at both ends of the capacitor, and an oscillating circuit electrically connected to both ends of the transformer. The driving circuit is electrically connected to the inverter circuit, for regulating the AC voltage to control the time period that the light source is turned on. As the input of DC voltage into the transformer is stopped, the driving circuit opens the plurality of switches in the inverter circuit, forming electrical isolation between the capacitor and the transformer, which prevents voltage oscillation and stores the energy into the capacitor. | 04-15-2010 |
| 20100090616 | Solar simulator - There are included an electric light emission continuous control unit and a power absorbing unit, and the electric light emission continuous control unit is provided with one or a plurality of large power elements to be used as a control impedance, and the large power element is continuously controlled to light a flash lamp to a determined light emission quantity. The power absorbing unit is provided with one or a plurality of power absorbing elements, and an operation of the power absorbing element is selected in a switching unit, and thereby power consumption of the large power element is controlled within a determined range. | 04-15-2010 |
| 20100097006 | SWITCHING MODE POWER SUPPLY CIRCUIT FOR PLASMA DISPLAY PANEL - The present invention relates to a switching mode power supply circuit for a plasma display panel comprising an input unit, a PFC (Power Factor Correction) unit, an output unit and a standby unit, wherein the standby unit includes a standby block for outputting a standby voltage by being connected to an AC filter stage of the input unit, a sequence block for sequentially applying power of the output unit and a control block which is connected between the standby block and the sequence block and inputs the standby voltage outputted from the standby block to the sequence block only in case that a PS_ON signal is applied. | 04-22-2010 |
| 20100097007 | LIGHT-EMITTING DIODE LIGHTING DEVICE - There is provided an LED lighting device having a satisfactory temperature characteristic and a small amount of variation in output current. The step-down chopper is provided with a first circuit including the switching element, the impedance means and a first inductor connected in series and a second circuit including the first inductor and a diode connected in series. A self-excited drive signal generation circuit is provided with a second inductor magnetically coupled with the first inductor and applies a voltage induced in the second inductor to the switching element to keep the switching element on. A turn-off circuit outputs an output voltage when the voltage of the impedance means detected by a comparator exceeds the reference value, and the output voltage allows a switching element to turn on to short-circuit the output terminals of the self-excited drive signal generation circuit, resulting in that the switching element is turned off. | 04-22-2010 |
| 20100102745 | 190W POWER LIMITER CIRCUIT FOR LIGHTING EQUIPMENT - A 190 W power limiter circuit for lighting equipment includes a DC power supply unit employed to transform an AC power source into a low DC output voltage, a DC voltage regulator used to regulate the DC power supply unit for a micro controller unit, an AC synchronization unit utilized to receive a synchronization signal of an AC line frequency and an AC voltage variation that are sent to the micro controller unit to achieve a synchronous triggering with the AC line frequency for driving an AC lamp driver unit, and an AC current sensor unit used to induct AC of a load circuit and having a resistor, manganese copper, a semi-conductor IC or a current transformer, which is connected to AC lamps in series, able to create voltage inducting signals fed back to the micro controller unit to adjust a triggering angle of the AC lamp driver unit for keeping power consumption less than 190W despite the load change of the lamps. | 04-29-2010 |
| 20100102746 | LIGHT CONTROL SYSTEM WITH PWM DUTY CYCLE CONTROL USING CURRENT SIGNAL FEEDBACK - A light control system having a light emitting device to produce a pre-determined light output is disclosed. The light control system includes a power circuit in electrical communication with the light emitting device for transmitting an electrical current to the light emitting device for controlling the light output, a timing circuit in electrical communication with the power circuit, wherein the timing circuit generates a pre-determined timing sequence and regulates a duty cycle of the power circuit in response to the timing sequence, and a feedback circuit in communication with the light emitting devices and the timing circuit, wherein the feedback circuit is adapted to monitor an electrical characteristic of the light emitting devices and control the timing sequence of the timing circuit in response to the electrical characteristics of the light emitting devices. | 04-29-2010 |
| 20100102747 | UNIFIED 0-10V AND DALI DIMMING INTERFACE CIRCUIT - Systems and methods are disclosed that facilitate switching a lamp ballast between DALI and analog control states as a function of control state information stored prior to the ballast being powered of and control information received by an interface circuit for the ballast circuit. A depolarization circuit is coupled to the interface circuit and ensures consistent polarity across a rectifier circuit regardless of the polarity of two control wires coupled to a miswiring protection circuit in the interface circuit. In this manner, a single interface circuit provides dual 0-10V analog and DALI control for dimming a lighting device regardless of whether a wall-mounted controller coupled to the interface circuit is an analog or a DALI type controller, thereby mitigating a need to switch out a ballast circuit coupled to the lighting device when changing between DALI and analog type controllers. | 04-29-2010 |
| 20100102748 | Drive apparatus for a vacuum fluorescent display - A VFD drive apparatus in which the filament of a VFD is coupled at a first terminal to an input voltage derived from a voltage source, and at a second terminal to a shunt voltage regulator that establishes a regulated filament current and a regulated cutoff voltage with respect to ground potential. Other electrical loads such as drive circuitry for the anodes and grid of the display are coupled between the second terminal of the filament and ground potential so that at least a portion of the filament current is supplied to such other electrical loads. Power dissipated by the shunt voltage regulator is thereby reduced, and the cost associated with providing additional voltage regulators for the other electrical loads is avoided. | 04-29-2010 |
| 20100102749 | CIRCUIT ARRANGEMENT AND METHOD FOR ADAPTING THE OUTPUT OF HIGH-PRESSURE DISCHARGE LAMPS - A circuit arrangement for adapting the output of high pressure discharge lamps that is suitable for operating with an inductor is provided, wherein the circuit arrangement includes an electronic switch that is connected in parallel with the lamp, and this parallel circuit is arranged in series with the inductor, the circuit arrangement being arranged in the high pressure discharge lamp. | 04-29-2010 |
| 20100102750 | LIGHT EMITTING DIODE HAVING PROTECTION FUNCTION - The present invention relates to a light emitting diode driver having a protection function that activates hiccup mode for a predetermined period of time when a light emitting diode performs an abnormal operation to thereby protect the light emitting diode. A light emitting diode driver having a protection function according to an aspect of the invention may include: a light emitting unit emitting light; a reference signal generating unit generating a reference signal having pulses with a predetermined period when the light emitting unit performs an abnormal operation; a control unit controlling operating time in hiccup mode according to the reference signal from the reference signal generating unit, the hiccup mode where output is switched on and off at a predetermined period; and a driving unit driving the light emitting unit in the hiccup mode for the operating time determined by the control unit. | 04-29-2010 |
| 20100109552 | Light Dimmer Circuit - A light dimmer circuit for use with light emitting diodes. Light emitting diodes (LEDs) are connected in parallel with capacitors, which are connected in parallel with LED drivers. The light dimmer circuit is capable of achieving a wide range of power levels to the LEDs. | 05-06-2010 |
| 20100109553 | LED BULB WITH ZENER DIODE, ZENER DIODE ASSEMBLY OR RESISTOR CONNECTED IN SERIES - An LED bulb in one embodiment includes two depending arms; a Zener diode secured to one end of one arm; an LED secured to one end of the other arm; a conductor electrically interconnecting the Zener diode and the LED; and an enclosure formed of epoxy resin with the Zener diode, the LED, the conductor, and one ends of the arms being concealed therein, wherein either a cathode of the LED is connected in series with a cathode of the Zener diode or an anode of the LED is connected in series with an anode of the Zener diode. The LED is adapted to emit red, green, or blue light. | 05-06-2010 |
| 20100109554 | ILLUMINATION DEVICE HAVING INRUSH CURRENT LIMITING CIRCUIT - An illumination device includes an integrated electronic ballast and a luminaire connecting terminal, that has a terminal housing, wherein there is integrated in the terminal housing an inrush current limiting circuit that is designed such that when the luminaire is switched on it prevents excessively large inrush currents by a voltage drop in the inrush current limiting circuit during the switched on phase. | 05-06-2010 |
| 20100109555 | AROMATIC AMINE COMPOUND, ORGANIC ELECTROLUMINESCENT ELEMENT INCLUDING THE SAME, AND DISPLAY DEVICE INCLUDING ORGANIC ELECTROLUMINESCENT ELEMENT - An aromatic amine compound is represented by general formula [I]: | 05-06-2010 |
| 20100117555 | PULSE DIMMING CIRCUIT AND THE METHOD THEREOF - The present invention provides a pulse dimming circuit and a method thereof. The pulse dimming circuit is compatible for both DC input signal and PWM input signal using only one circuit board. | 05-13-2010 |
| 20100117556 | Voltage Converter - A voltage converter is provided in which a first terminal (A) and a second terminal (B) are provided, each coupled to a switching means, the switching means is coupled to respective terminals for connecting a first capacitor (C | 05-13-2010 |
| 20100123411 | COMPENSATION METHOD AND CIRCUIT FOR LINE REJECTION ENHANCEMENT - An embodiment of the present invention is directed to a method and circuit to control light emitting diode (LED) output. The method includes receiving a line voltage signal which powers a lighting circuit comprising an LED and determining an adjustment of a threshold based on a variation of the line voltage signal and/or a controller delay or other practical controller limitation or imperfection. The method further includes dynamically adjusting a threshold or other reference of a controller which controls a switch of said lighting circuit for compensating for line variations to maintain a substantially uniform LED current. | 05-20-2010 |
| 20100123412 | PULSE GENERATING CIRCUIT - A high-voltage pulse generating circuit includes a direct current power source, a transformer, a switching device and a switching control circuit. The transformer includes a primary winding and a secondary winding. The switching device is connected between the direct current power source and the primary winding. The switching control circuit controls the switching device to be in the non-conductive state after the switching device is set in the conductive state during first conductive time and further controls the switching device to be in the conductive state during second conductive time after one of the voltages of the primary winding and the secondary winding excess the predetermined value and then to be in the non-conductive state. | 05-20-2010 |
| 20100127634 | METHODS AND APPARATUS FOR CONVEYING INFORMATION VIA COLOR OF LIGHT - Methods and apparatus for conveying information. One or more information signals representing scalar or numeric information that is not associated with color is/are received from a data base, a network, the World Wide Web, or a software program. The information signal(s) is/are converted into one or more illumination control signals representing at least color information, and a color of illumination generated by one or more LED-based light sources is controlled in response to the illumination control signal(s) so as to convey the scalar or numeric information via at least the color of the generated illumination. | 05-27-2010 |
| 20100127635 | OPTOELECTRONIC DEVICE - An optoelectronic device is provided and includes a substrate, a p-type cladding layer, an active layer and a conductive light extraction unit. The conductive light extraction unit includes an n- type cladding layer above the active layer, a metal layer above the n-type cladding layer and a plurality of holes passing through the metal layer and the n-type cladding layer. Sizes of the plurality of holes are not the same and/or the holes are arranged irregularly. | 05-27-2010 |
| 20100134038 | PHASE CONTROLLED DIMMING LED DRIVER SYSTEM AND METHOD THEREOF - The present invention relates to providing an improved phase controlled dimming LED driver circuitry, system and a method thereof, which is configured to enable dimming intensity of light generated by a light source, said phase controlled dimming driver circuitry being connected to a phase control dimmer that provides to it a regulated alternating current (AC) signal, wherein said phase controlled dimming driver circuitry does not include a microprocessor and pulse width modulates its output current, provided to said light source, at a frequency unrelated to the AC signal frequency. Further, the phase controlled dimming driver circuitry applies amplitude modulation (AM) and pulse width modulation (PWM) substantially simultaneously to the output current provided to the light source. | 06-03-2010 |
| 20100134039 | LIGHT EMITTING DIODE BACKLIGHT MODULE AND DRIVING APPARATUS AND METHOD THEREOF - A light emitting diode (LED) backlight module, a driving apparatus and a driving method thereof are provided. The driving apparatus is adapted to drive at least one LED of at least one lighting unit within the LED backlight module. The driving apparatus includes a latch unit and a switch unit. The latch unit is used for receiving a control backlight data and latching the control backlight data during a frame period according to a trigger signal, so as to output a control signal. The switch unit is coupled to the latch unit and the LED for receiving the control signal to determine whether the LED emits or not. | 06-03-2010 |
| 20100141168 | CLASS-E AMPLIFIER AND LIGHTING BALLAST USING THE AMPLIFIER - An amplifier comprises a power source, a load network comprising a load and a resonance circuit, an input branch having a first end electrically coupled to the power source and a second end electrically coupled to the load network, and an active switch having one terminal electrically coupled to the second end of the input branch. The input branch including at least one parallel-LC-circuit configured to provide an infinitely large impedance at harmonics of a determined order. | 06-10-2010 |
| 20100141169 | LIGHTING SYSTEMS - A power adaptor ( | 06-10-2010 |
| 20100141170 | AC/DC MODULATION CONVERSION SYSTEM AND APPLICATION THEREOF - This invention discloses an AC/DC modulation conversion system, which comprises a control signal transmitter, a control signal receiver and a control signal/modulation signal converter. The control signal transmitter transmits a control signal, the control signal receiver receives the control signal, the control signal/modulation signal converter converts the control signal into a pulse width modulation signal or a DC level modulation signal. Therefore, this AC/DC modulation conversion system can be applied to controllable DC load circuits such as a controllable DC heater, a controllable DC motor or a controllable DC lamp etc for respectively controlling the temperature, speed or brightness etc. | 06-10-2010 |
| 20100141171 | ORGANIC ELECTROLUMINESCENT DEVICE WITH ENHANCED LIGHT EMISSION - An organic electroluminescent device is provided which includes a colored polarizer to reduce power consumption requirements for desired levels of brightness. The organic electroluminescent device includes a substrate, an anode electrode layer, an organic layer, a cathode electrode layer, and a colored polarizer provided on a surface of the substrate opposite a surface of the substrate on which the anode electrode layer is formed such that the colored polarizer polarizes light incident from the outside. The colored polarizer increases transmission of a given color of light based on the color(s) included in the polarizer to thereby decrease total current required by the organic electroluminescent device. | 06-10-2010 |
| 20100148691 | Driving circuit with dimming controller for driving light sources - There is provided a driving circuit for controlling power of a light source. The driving circuit includes a power converter and a dimming controller. The power converter is coupled between a power source and the light source, and can receive power from the power source and provide a regulated power to the light source. The dimming controller is coupled to the power converter, and can receive a switch monitoring signal. The switch monitoring signal can indicate an operation of a power switch coupled between the power source and the driving circuit. The dimming controller is further operable for adjusting the regulated power from the power converter by controlling a switch coupled in series with the light source according to the switch monitoring signal. | 06-17-2010 |
| 20100148692 | Auto-dimming apparatus for controlling power delivered to a load - A circuit with a magnetically variable inductor that is placed in close proximity to an independently wound control coil and connected in parallel to a current transformer having primary and secondary windings wound on a magnetic core wherein the transformer core with associated windings. The inductor core is placed within the bore of the control coil and an optional focusing armature concentrates the magnetic field at the poles. Application of a control current forms poles at the control coil extremities and causes a change in magnetic properties of the inductor core thereby altering the power output of the current transformer inversely to the magnitude of the control current. The control current from the output of the secondary coil of a current transformer in series with the load and conditioned by a feedback conditioning circuit modulates the level of the control current. The magnetically variable inductor controls a D.C. to A.C. power inverter circuit, which is useful in supplying power to a fluorescent lamp and other A.C. receptive loads connected to the output of an inverting circuit. Additionally, a microprocessor optionally modulates the feedback from the secondary of the current transformer while receiving inputs from manual and automatic environmental controls. | 06-17-2010 |
| 20100148693 | CONTROL SYSTEM FOR LIGHT-EMITTING DEVICE - A control system for a light-emitting device may include test circuitry, photodetectors, and process circuitry. The test circuitry is configured to sequentially drive individual groups of light-emitting elements in a light-emitting device during a test sequence. Each group of light-emitting elements includes one or more light-emitting elements. The photodetectors are configured to detect an intensity of light present at a plurality of locations of the light-emitting device during the test sequence and generate a detection signal corresponding to the detected intensity of light. The process circuitry is configured to process the detection signals and transmit an adjustment signal based on the processing. The light-emitting elements may then be driven such that at least one characteristic of light emitted by all of the plurality of light-emitting elements is substantially the same at each of the plurality of locations of the light-mixing region. | 06-17-2010 |
| 20100156313 | Stepwise repairing for electrode of discharge lamp - A drive device that drives a discharge lamp including first and second electrodes includes a lighting circuit, a current control unit, a deformation detection unit, a current modulation unit, and a modulation enhancement unit. The lighting circuit supplies alternating current to the electrodes. The current control unit regulates the lighting circuit to control the alternating current. The deformation detection unit detects deformation of the surface shape of the electrodes. The current modulation unit modulates the controlled alternating current when the deformation is detected. The modulation enhancement unit increases a modulation ratio when the deformation is detected while modulating the alternating current. | 06-24-2010 |
| 20100164395 | Flourescent Lamp Whose Ballast Has An Output Power That Is Regulated For Flourescent Tubes Of Different Power Specifications - A fluorescent lamp includes a ballast, a holder, a power regulating switch, and a fluorescent tube. The power regulating switch includes a housing, a base, plurality of inductors, a plurality of first contacts, a plurality of second contacts, a plurality of conducting bridges, a plurality of push rods, and a plurality of elastic members. The circuit of the power regulating switch has different values of inductance and output power by provision of the inductors, and the output power of the power regulating switch is regulated by the electrical connection between each of the first contacts and the respective different second contact so as to fit the fluorescent tube of different power specifications. | 07-01-2010 |
| 20100164396 | DYNAMIC POWER SAVING PULSE WIDTH MODULATED LED DRIVER CIRCUIT - In accordance with an aspect of the present invention, an LED driving circuit includes a digital-to-analog converter and a driving portion. The circuit is operable to turn off the digital-to-analog converter at times when the driving portion is not providing a high signal. As such the digital-to-analog converter will waste less energy. | 07-01-2010 |
| 20100164397 | DIMMER DEVICE WITH FEEDBACK FUNCTION - A dimmer device enables wireless control of intensity of light output of an electric light source and includes a light dimmer for coupling electrically with the light source. The light dimmer includes a power supply module for outputting a supply power, a dimmer module operable to vary the supply power to result in drive power that is supplied to the light source, a feedback module for generating a feedback signal in accordance with the drive power, the feedback signal corresponding to a current intensity of the light output of the light source, a wireless receiver unit for receiving a control signal from a remote controller and providing the control signal to the dimmer module for controlling the dimmer module to vary the supply power in accordance with the control signal, and a wireless transmitter unit for transmitting the feedback signal from the feedback module. | 07-01-2010 |
| 20100171438 | ELECTRONIC BALLAST HAVING CURRENT WAVEFORM CONTROL WITHIN THE HALF WAVE - Aspects of the invention include an electronic ballast and method for controlling current through a lamp to produce various current waveforms through the lamp. In one embodiment, the ballast samples and adjusts the current through the lamp on a micro-second time scale within each half-cycle of the current waveform (i.e., at least twice within a period of a reference waveform). The ballast can accommodate different lamp types, provide arbitrary current waveforms, operate a lamp at multiple power levels, and provide power to the lamp as a function of an operational state of a lamp. For example, in one embodiment, the ballast increases power to the lamp and adjusts the current waveform provided to the lamp as the lamp ages to minimize luminous flux loss caused by darkening of lamp walls and changes in lamp chemistry. | 07-08-2010 |
| 20100171439 | CAPACITOR CHARGING APPARATUS - A capacitor charging apparatus includes a transformer and an output capacitor charged with current flowing through a secondary coil of the transformer, and charges the output capacitor by performing a switching control of a switching transistor provided on a path leading to a primary coil of the transformer. A switching control unit controls on and off of the switching transistor. A voltage detector monitors a voltage at a tap provided in the secondary coil of the transformer. The switching control unit regards the voltage detected by the voltage detector as an output voltage of the capacitor charging apparatus, and controls the on and off of the switching transistor. | 07-08-2010 |
| 20100176741 | LIGHT WITH REMOVABLE HEAD AND COVER - A light may comprise a light body having an opening for receiving an electrical power source, and a head including a light source and having an end for engaging the light body. A head for a light may comprise a light source, a reflector, an end for engaging a light body; and an insulating member. At least three concentric and/or coaxial electrical contacts of the head are enclosed by the head and light body when the head and light body are engaged. One of the three concentric electrical contacts may provide an electrical connection to the light source and one of the three concentric electrical contacts may be for making an electrical connection to an electrical power source. | 07-15-2010 |
| 20100188013 | LOW POWER DRIVE CIRCUIT - The invention relates to an integrated driver circuit suitable for driving a light emitter with a signal current I(time) based on a received signal said circuit comprising a differential pair of transistors having a first transistor and a second transistor each respectively forming part of a first branch and a second branch, said first branch comprises a node suitable for connecting to said light emitter and/or said first branch comprises said light emitter, wherein said second branch comprise at least one charge storage device. This charge storage device may be arranged to collect current otherwise wasted in the process of driving the light emitter. This current may be utilized to drive circuitry thereby reduce current consumption. | 07-29-2010 |
| 20100188014 | MODULATOR MODULE IN AN INTEGRATED CIRCUIT DEVICE - An integrated circuit device has a modulator module that provides a modulation signal comprising one frequency keyed on and off, or alternating between two or more different frequencies or phases that are selected based upon a modulator signal. The one or more frequencies or phases may be selected from a plurality of frequency sources. Switching the one frequency on or off, or between the at least two different frequencies or phases may be synchronized with one or both of the two or more different frequencies or phases so that “glitches” or spurs are not introduced into the modulation signal. The integrated circuit device may also comprise a processor, memory, digital logic and input-output. Frequency sources may be internal to the digital device or external. The modulator signal may comprise serial data generated from the digital logic and/or processor of the digital device. | 07-29-2010 |
| 20100194306 | TRANSFORMER AND POWER SUPPLY APPARATUS USING THE SAME - A transformer includes a first bobbin having a first primary winding and a first secondary winding wound therearound, having a first through hole; a second bobbin having a second primary winding and a second secondary winding wound therearound, having a second through hole; and two divided magnetic cores. A divided magnetic core is composed of center magnetic leg formed from a vertical wall and a side wall vertically linked to rear magnetic plate, with a T-shaped cross section; a first outer magnetic leg placed at one side separated by the vertical wall; and a second outer magnetic leg placed at the other side. The first and second outer magnetic legs are inserted from both sides of the first and second through hole. | 08-05-2010 |
| 20100207538 | ELECTRONIC CANDLE STRUCTURE - The present invention relates to an improved structure for an electronic candle, and is primarily fabricated from a candle column, which is solidified and formed from molten wax, and a supporting device primarily structured from a supporting body and a base. An electronic device located within the base enables a light-emitting element and a heater base on the supporting body to obtain electricity, and different smelling essential oils can be added within the heater base according to user preference, thereby enabling electricity supplied by the electronic device to heat and cause the essential oils to volatize and release a fragrant aroma. Accordingly, the user can choose different ambient lights to fashion exquisite streams of light according to his mood, and the heater base can be used to volatilize the added essential oils as the temperature rises to achieve the objective of filling a room with an aromatic odor. | 08-19-2010 |
| 20100207539 | CIRCUIT FOR CONTROLLING AN OPERATING DEVICE FOR A LIGHT APPLICATION, OPERATING DEVICE AND METHOD FOR OPERATION OF THE CIRCUIT - A circuit for controlling an operating device for a light application is provided. The circuit may include a galvanically isolated transmitter configured to receive an applied control signal; and a power section configured to be activated by the galvanically isolated transmitter as a function of the control signal. | 08-19-2010 |
| 20100207540 | LIGHTING APPARATUS - A lighting apparatus including a reflector having a reflective exterior surface partially enclosing an interior space and defining a focal point within the interior space, and a high pressure discharge lamp positioned substantially at the focal point of the reflective exterior surface. In some examples, the high pressure discharge lamp includes an arc tube containing mercury, a metal halide, or sodium. In some examples, the reflective exterior surface extends along a longitudinal axis and curves around the longitudinal axis. In some example, the reflective exterior surface defines an elliptical paraboloid. | 08-19-2010 |
| 20100213866 | BALLAST AND BALLAST CONTROL METHOD AND APPARATUS, FOR EXAMPLE ANTI-ARCING CONTROL FOR ELECTRONIC BALLAST - A technique for providing control for an electronic ballast by responding to the current in the common bus (DC power rail) between a boost circuit such as a power factor circuit (PFC) and an output (such as a high frequency (HF) inverter) circuit, and adjusting, changing or shutting down either the power factor control circuit or the inverter circuit when the power going into the inverter circuit is above a threshold. Power going into the inverter circuit may be measured by a resistor, and temperature compensation may be provided. Excess power indicative of a spark is detected in such a way that normal starting of a lamp load connected to the ballast occurs without triggering the change/shutdown but an external arc will trigger the change/shutdown. For example, the output circuit may be shut down and the external arc curtailed within 200 msecs. | 08-26-2010 |
| 20100213867 | HIGH-PRESSURE DISCHARGE LAMP - A high-pressure discharge lamp may include a discharge vessel, which contains: electrodes, at least one noble gas as a start gas, at least one element selected from the group consisting of Al, In, Mg, Tl, Hg, and Zn for arc transfer and discharge vessel wall heating, and at least one rare earth halide for the generation of radiation, which is configured such that the generated light is dominated by molecular radiation, wherein at least one member of a first group of rare earth halides is used together with at least one member of a second group of rare earth halides, the first group having the property that the color distance decreases with a power increase when the power of the lamp is increased in a predetermined power interval, and the second group having the property that the color distance increases with a power increase when the power of the lamp is increased in this predetermined power interval. | 08-26-2010 |
| 20100219767 | LIGHT-EMITTING DEVICE INCLUDING INDEPENDENTLY ELECTRICALLY ADDRESSABLE SECTIONS - Light-emitting devices are described herein. Some embodiments relate to light-emitting diodes with light-emitting sections that are independently electrically addressable. The devices may be used in a variety of applications including illumination and general lighting. | 09-02-2010 |
| 20100219768 | LIGHT CONTROL APPARATUS AND LIGHTING APPLIANCE USING THE SAME - It is an object to provide a light control apparatus and a lighting appliance using the same which enable to increase luminous efficiency in the light control. The lighting appliance includes a light source and a light control apparatus. The light control apparatus includes an electric current output circuit which outputs a constant electric current for lighting to a light source configured of an organic electroluminescence device, an electric current control circuit which controls an intensity of a driving electric current outputted from the electric current output circuit, and the electric current control circuit biases a direct current component so as to vary the driving electric current periodically between a predetermined maximum value and a predetermined minimum value and flows in the same direction at all times in the light control of the light source. | 09-02-2010 |
| 20100219769 | HIGH VOLTAGE GENERATION CIRCUIT, PUNCTURE DEVICE, AND BLOOD TEST DEVICE - A high voltage generation circuit for laser puncture in which the voltage for laser puncture can be boosted up to the laser oscillation level in a short time with low power loss. The high voltage generation circuit ( | 09-02-2010 |
| 20100225243 | METHOD AND SYSTEM FOR CONTROLLING POWER TO PIXELS IN AN IMAGER - A system for controlling power applied to pixels in an imager. A first switch coupling the internal power node of the pixels to the power supply of the imager. A second switch coupling the internal power node of the pixels to a ground potential or low potential. The first and second switches are controlled complimentary to each other during integration and readout of the pixels. A third switch providing a high impedance mode where the internal power node and n+ guard ring are isolated from the operating and ground potentials. | 09-09-2010 |
| 20100225244 | LED penlight bulb - The invention presents a new design of one-cell and two-cell LED penlight bulbs and it's embedded PCB electronic circuit board structure, specially shaped LED encapsulation and a base to make it physically interchangeable with standard incandescent penlight bulbs. The bulb houses a super bright LED in a specially shaped, spherical molded top. The leads from the LED are soldered on the PC Board that is embedded inside the base. The PC Board power input ports connect to the metal base. The base and the LED molded encapsulation are attached together by means of bonding (thermal, sonic or solvent), friction interference fit or adhesive. The PC Board utilizes an amplifier design which allows the LED to be powered by either one or two 1.5 volt dry cells. The simple bulb design significantly reduces the weight of the entire product, generates much less heat and also dramatically reduces the power consumption of the penlight. | 09-09-2010 |
| 20100231138 | LED POWER-SOURCE CIRCUIT AND ILLUMINATION FIXTURE USING THE SAME - An LED power-source circuit includes an input filter circuit including noise prevention capacitors and a line filter, a diode bridge connected to the input filter circuit, a smoothing capacitor connected to an output of the diode bridge and having a capacitance of 1 μF or less, a DC-DC conversion circuit connected to the smoothing capacitor, and an LED assembly connected to an output of the DC-DC conversion circuit. Grounding capacitors are coupled to ground from an input power line between the line filter and the diode bridge. The total capacitance from the input power line to ground is set to be 1/200 or less of that of the smoothing capacitor. | 09-16-2010 |
| 20100237796 | POCKET TOOL WITH A LIGHT POINTER - The invention relates to a compact light module ( | 09-23-2010 |
| 20100237797 | HIGH-INTENSITY DISCHARGE LAMP AND LIGHTING DEVICE - A high-intensity discharge lamp including an arc tube provided with a heat-resistant translucent discharge vessel forming a discharge space, an electrode structure, a discharge medium charged in the discharge vessel, the discharge medium being composed of a light-emitting metal including mercury and a starting gas, a support member electrically connected with the electrode structure of the arc tube and holding the arc tube and an outer bulb having the arc tube disposed therein along a tube axis and sealed with a support member at an end portion thereof. The electrode structure has an electrode shaft hermetically sealed at each of opposed end portions of the discharge vessel and having a tip portion disposed in the discharge vessel, a coiled electrode wound around the tip portion of the electrode shaft disposed in the discharge vessel, and a recessed portion or a protruding portion formed on the electrode shaft spaced from the coiled electrode. A lighting device with the high-intensity discharge lamp is also described. | 09-23-2010 |
| 20100244725 | MULTIPLE DOPANT EMISSIVE LAYER OLEDS - An organic light emitting device comprising, an anode, a cathode, and an emissive layer, located between the anode and the cathode, of a host compound, a first compound capable of phosphorescent emission at room temperature, and a second compound capable of phosphorescent emission at room temperature is provided. At least 95 percent of emission from the device is produced from the second compound when an appropriate voltage is applied across the anode and cathode. | 09-30-2010 |
| 20100244726 | PRIMARY-SIDE BASED CONTROL OF SECONDARY-SIDE CURRENT FOR A TRANSFORMER - A power control system includes a transformer and a controller regulates a current on a secondary-side of the transformer based on a primary-side signal value. In at least one embodiment, the secondary-side current is a current out of a filter coupled to a rectifier and the secondary-side of the transformer and into a load. In at least one embodiment, the primary-side signal value is a sample of a current in the primary-side windings of the transformer. In at least one embodiment, the primary-side signal value represents a sample value of a primary-side transformer current. Proper timing of sampling the primary-side signal value substantially eliminates contributions of a transformer magnetizing current from the primary-side transformer current sample. Sampling the primary-side signal value when contributions of the transformer magnetizing current are substantially eliminated allows at least an average of the secondary-side current to be determined from the primary-side signal value. | 09-30-2010 |
| 20100244727 | LIGHT-EMITTING DIODE DRIVER - A light-emitting diode (LED) driver used to power at least one LED with an alternating current (AC) voltage source is provided. The LED driver includes a rectifying unit applying N-fold higher voltage than the voltage from the AC voltage source to the LED. The rectifying unit includes a first charging unit to charge a first voltage, and a second charging unit to charge a second voltage. The first voltage includes the voltage at the AC voltage source during a first half-cycle of one AC voltage cycle, and the second voltage includes the first voltage and the voltage at the AC voltage source during the second half-cycle of the AC voltage cycle. Accordingly, the LED driver may improve light-emitting efficiency and reduce flicker of LEDs. | 09-30-2010 |
| 20100244728 | METHOD AND CONTROL CIRCUIT FOR DIMMING A GAS DISCHARGE LAMP - In a method of dimming a gas discharge lamp, a controllable switch is provided which is connected between terminals of the lamp receiving an alternating power supply voltage. The opening and closing of the switch is controlled. The switch is closed at least during a first closing time period and a subsequent second closing time period within a half period of the power supply voltage. The second closing time period is longer than the first closing time period. The switch may be closed during a plurality of closing time periods within a half period of the power supply voltage, each closing time period after the first closing time period being longer than a previous closing time period. The first closing time period is started after a delay time period after a first reignition of the lamp after a voltage zero-crossing of the power supply voltage. | 09-30-2010 |
| 20100244729 | Gazing Ball Having A Battery-Powered LED Device - An illumination device comprising: (a) a substantially spherical and semi-transparent gazing ball having a base with a sidewall; (b) a base cap with a channel corresponding to the sidewall of the base of the gazing ball; (c) an LED device within the base cap; (d) a battery in electrical communication with the LED device and (e) a switch for establishing and removing the electrical communication between the LED device and battery. | 09-30-2010 |
| 20100253240 | PWM CONTROL METHOD AND DEVICE AND LIGHT ADJUSTING DEVICE - A PWM control method increases/decreases a duty ratio of a PWM signal with a predetermined resolution so to control the duty ratio of the PWM signal in the case of a PWM control. The resolution of the duty ratio of the PWM signal is increased to make a high period in the duty ratio of the PWM signal longer than a rise time of the PWM signal if the high period is shorter than the rise time. The resolution of the duty ratio of the PWM signal is increased to make a low period in the duty ratio of the PWM signal longer than a fall time of the PWM signal if the low period is shorter than the fall time. | 10-07-2010 |
| 20100253241 | Low Cost System Concept for Gesture Light Control - A lighting system comprising a lamp comprising an array of LEDs arranged to transform electricity into a light beam having properties such as intensity, colour, colour temperature; a fight control means comprising a LED driver and a pulse width modulator arranged to adjust said light beam properties; a DA-converter, an ultrasound driver and an ultrasonic transmitter arranged to convert a digital transmit signal into the transmission of an ultrasonic pulse; an ultrasonic receiver and an amplifier arranged to receive reflected ultrasonic signals and transform said ultrasonic signal in a voltage, and a comparator arranged to generate a digital receive signal if said voltage is greater than a predetermined threshold; a processing means arranged to derive a time-of-flight signal representing the time differences between said digital transmit and receive signals and to send control signals to said light control means in dependence of said time-of-flight signal. | 10-07-2010 |
| 20100253242 | STATE CYCLING APPARATUS AND METHOD, AND CONTROL CIRCUIT FOR A LAMP - A state cycling apparatus uses a capacitor instead of complicated and expensive microcontroller to fulfill a state cycling function of a system. The state cycling apparatus includes an internal circuit in the system connected to the capacitor. In a first embodiment, the internal circuit reads the voltage level on the capacitor at power on to determine a current state for the system, and writes the voltage level corresponding to a next state of the system to the capacitor. In a second embodiment, the system reads the state data stored in the internal circuit to determine a current state for the system at power on, the capacitor is charged during the system is under power on, and the capacitor provides power for the internal circuit to store a state data after the system is powered off. | 10-07-2010 |
| 20100259184 | LIGHT-EMITTING DEVICE - A light-emitting device according to the present invention includes a plurality of columnar semiconductors | 10-14-2010 |
| 20100259185 | Thyristor Starting Circuit - Various apparatuses and methods for starting a thyristor are disclosed herein. For example, some embodiments provide an apparatus for starting a thyristor, the apparatus including a thyristor, a switch, a load connected to the thyristor and the switch, and a controller connected to a control input of the switch. The controller is adapted to operate the switch to apply the load to the thyristor for a predetermined period when power is first applied to the thyristor. | 10-14-2010 |
| 20100264843 | Radiation-Emitting Device - A radiation-emitting device includes a first active semiconductor layer embodied for the emission of electromagnetic radiation and for direct contact with connection electrodes, and a second active semiconductor layer embodied for the emission of electromagnetic radiation and for direct contact with connection electrodes. The first active semiconductor layer and the further second active semiconductor layer are arranged in a manner stacked one above another. | 10-21-2010 |
| 20100264844 | POWER SYSTEMS WITH PLATFORM-BASED CONTROLLERS - A power system includes a switching circuit, a resonant tank, a feedback circuit, and controller circuitry. The switching circuit including a first switch and a second switch provides a first AC signal. The resonant tank coupled to the switching circuit receives the first AC signal and generating a second AC signal for powering a load. The feedback circuit coupled to the load monitors an electrical condition of the load and provides a feedback signal. The controller circuitry coupled to the converter controls the switching circuit according to the feedback signal so as to control the power to the load. The controller circuitry is integrated in a first die. The first switch is integrated in a second die, and the second switch is integrated in a third die. The first die, said second die and said third die are mounted on and electrically interconnected to a platform compatible with through-hole technology. The platform and the resonant tank are further assembled on a printed circuit board. | 10-21-2010 |
| 20100270941 | APPARATUS AND METHODS OF OPERATION OF PASSIVE LED LIGHTING EQUIPMENT - This invention is concerned with the control and design of a LED lighting system that does not need electrolytic capacitors in the entire system and can generate light output with reduced luminous flux fluctuation. The proposal is particularly suitable, but not restricted to, off-line applications in which the lighting system is powered by the ac mains. By eliminating electrolytic capacitors which have a limited lifetime of typically 15000 hours, the proposed system can be developed with passive and robust electrical components such as inductor and diode circuits, and it features long lifetime, low maintenance cost, robustness against extreme temperature variations and good power factor. No extra electronic control board is needed for the proposed passive circuits, which can become dimmable systems if the ac input voltage can be adjusted by external means. | 10-28-2010 |
| 20100270942 | APPARATUS AND METHODS OF OPERATION OF PASSIVE LED LIGHTING EQUIPMENT - This invention is concerned with the control and design of a LED lighting system that does not need electrolytic capacitors in the entire system and can generate light output with reduced luminous flux fluctuation. The proposal is particularly suitable, but not restricted to, off-line applications in which the lighting system is powered by the ac mains. By eliminating electrolytic capacitors which have a limited lifetime of typically 15000 hours, the proposed system can be developed with passive and robust electrical components such as inductor and diode circuits, and it features long lifetime, low maintenance cost, robustness against extreme temperature variations and good power factor. No extra electronic control board is needed for the proposed passive circuits, which can become dimmable systems if the ac input voltage can be adjusted by external means. | 10-28-2010 |
| 20100270943 | COLLEGE AND PRO SPORTS FRAGRANCE OIL WARMERS - A college and pro sports fragrance oil warmer device which includes a housing having a number of sides, a bottom wall and an open top. A fragrance producing medium is disposed in a glass bowl upon the top wall of the housing. A light mechanism within the housing is for heating the fragrance producing medium to pleasantly scent vapor in a room. A sports name and logo are simultaneously displayed on at least one side of the housing. The oil warmer device produces light, fragrance, sports'team message and sports'team logo simultaneously. | 10-28-2010 |
| 20100270944 | DEVICE AND METHOD FOR CONTROLLING ELECTRIC CONSUMERS - An apparatus for controlling at least one electrical load may include at least one pushbutton; a communications interface for communicating with the loads, the loads being switched on and off by the at least one pushbutton via the communications interface; and a first controlled switch with control logic, said switch being connected between the loads and a power supply, and the first controlled switch isolates the power supply from the loads as soon as all of the loads have been disconnected via the communications interface. | 10-28-2010 |
| 20100277090 | TRIANGULAR-WAVE GENERATING CIRCUIT, AND INVERTER, LIGHT EMITTING DEVICE AND LIQUID CRYSTAL TELEVISION USING THE CIRCUIT - A first comparator compares an output voltage Vout appearing at a capacitor with a maximum threshold voltage Vmax. A second comparator compares the output voltage Vout with a minimum threshold voltage Vmin. An edge detection circuit detects an edge of a synchronization signal SYNC having approximately ½ of frequency of the output voltage Vout and outputs an edge detection signal SE. A charge-discharge control unit refers to the first and the second comparison signal, and sets the charge-discharge circuit to a discharging state when the output voltage Vout becomes higher than the maximum threshold voltage Vmax and sets the charge-discharge circuit to a charging state when the output voltage Vout becomes lower than the minimum threshold voltage Vmin. When the edge signal SE becomes the predetermined level, the charge-discharge control unit switches the charging state and the discharging state of the charge-discharge circuit. | 11-04-2010 |
| 20100277091 | TEMPERATURE-STABILIZED CURRENT REGULATION DRIVER - A driver device may include a driver transistor providing a regulated current; and a stabilization circuit to produce a stabilized reference voltage to be applied to said driver transistor. The stabilization circuit may include: first and second bipolar stabilization transistors; a voltage divider including a first resistance and a second resistance, said voltage divider being interposed between the bases of said first and said second transistors, with the first resistor connected between the base of said second transistor and said partition point of said voltage divider and the partition point acting on the base of the first transistor; and a polarization network to determine the base-emitter voltages of said first and said second stabilization transistors, wherein: said first resistance has a value lower than the value of said second resistance, and the base-emitter voltage of said first transistor is higher than the base-emitter voltage of said second transistor. | 11-04-2010 |
| 20100277092 | LOW-DROPOUT (LDO) CURRENT REGULATOR - Various embodiments provide a driver device, which may include a transistor for providing a regulated current, said transistor having a control electrode; and a stabilization circuit acting on said control electrode of said transistor to produce a stabilized reference value for said current; a bipolar transistor coupled to said control electrode of said transistor in a feedback relationship, whereby, with said bipolar transistor conducting, increase and decrease of said current induce decrease and increase of the collector current in said bipolar transistor, respectively; and interposed between the base and the emitter of said bipolar transistor, a cascade arrangement of a diode and a resistance sensitive to said current so that said stabilized reference value for said current is determined by the value of said resistance as a function of the difference between the base-emitter voltage of said bipolar transistor and the voltage across the anode and cathode of said diode. | 11-04-2010 |
| 20100277093 | CIRCUIT ARRANGEMENT AND METHOD FOR OPERATING DISCHARGE LAMPS - A circuit arrangement for operating discharge lamps is provided with an input, to which an AC system voltage from a power supply system can be connected, an output, to which at least one discharge lamp can be connected, a backup capacitance, which is arranged between the input and the output, and a switch, which is in a charging current path of the backup capacitance. The circuit arrangement may include a driver configured to clock the switch for a predetermined period of time when the circuit arrangement is switched on for periodically interrupting the charging current path of the backup capacitance. | 11-04-2010 |
| 20100277094 | LED Driver System and Method - According to an embodiment of the present invention, a system is provided for driving at least one light-emitting diode (LED). The system includes an output terminal connectable to an anode of the LED and at which an output voltage can be provided for the LED. A driver loop, connectable to a cathode of the LED, is operable to maintain a LED current flowing through the LED at a desired level, thereby attenuating modulation error attributable to voltage variations at the cathode of the LED. | 11-04-2010 |
| 20100283402 | BACKLIGHT MODULE FOR LCD DEVICE - A backlight module includes a connector capable of performing voltage conversion or a voltage converter capable of transmitting signals. The connector or the voltage converter, disposed between an inverter and a lamp set, receives low-voltage signals generated by the inverter, performs voltage conversion, and outputs high-voltage signals for driving the lamp set. | 11-11-2010 |
| 20100283403 | Capacitance Reducing Method for a Pulsed Activated Device and Associated Devices - The present invention relates to a capacitance reducing method for a pulsed activated device and associated devices, especially to a pulsed activated device having a capacitor, which improves power factor as well as eliminating the need for large capacitance. The method comprises acts of rectifying an AC voltage to a pulsating DC voltage, sensing a zero-crossing point of the pulsating DC voltage, synchronizing the pulsating DC voltage, setting pulse duration in a pulse period and turning ON and OFF of a pulsed activated device. The device comprises a load, a rectifier, a capacitor, a driver, a controller and an optional PFC circuit. | 11-11-2010 |
| 20100289427 | Light emitting and lasing semiconductor methods and devices - A method for producing light emission from a two terminal semiconductor device with improved efficiency, includes the following steps: providing a layered semiconductor structure including a semiconductor drain region comprising at least one drain layer, a semiconductor base region disposed on the drain region and including at least one base layer, and a semiconductor emitter region disposed on a portion of the base region and comprising an emitter mesa that includes at least one emitter layer; providing, in the base region, at least one region exhibiting quantum size effects; providing a base/drain electrode having a first portion on an exposed surface of the base region and a further portion coupled with the drain region, and providing an emitter electrode on the surface of the emitter region; applying signals with respect to the base/drain and emitter electrodes to obtain light emission from the base region; and configuring the base/drain and emitter electrodes for substantial uniformity of voltage distribution in the region therebetween. | 11-18-2010 |
| 20100295466 | LED DRIVING DEVICE, ILLUMINATING DEVICE, AND DISPLAY DEVICE - Provided is an LED driving device which can stably reduce brightness of an LED. The LED driving device provided with: a driving voltage switching means (Q | 11-25-2010 |
| 20100295467 | CIRCUIT ARRANGEMENT AND METHOD FOR REGULATING THE CURRENT THROUGH AT LEAST ONE DISCHARGE LAMP - A circuit arrangement for the closed-loop control of the current through at least one discharge lamp may include a control loop including: a setpoint value input for supplying a setpoint value; an actual value input for supplying an actual value; and an output for providing a signal, which has been correlated with the current through the at least one discharge lamp, the actual value having been correlated with the value of the current through the discharge lamp; and a setpoint value input apparatus, which is designed to provide the setpoint value to the control loop; wherein the setpoint value input apparatus includes: a microprocessor with at least one input, the microprocessor being designed to couple the at least one input to a potential from a group of at least two different potentials; and a wiring apparatus with at least one input, which is coupled to the at least one input of the microprocessor, and at least one output, which is coupled to at least one point of the control loop. | 11-25-2010 |
| 20100301765 | DRIVING CIRCUIT OF LIGHT EMITTING DIODE AND LIGHTING APPARATUS - A driving circuit of a light emitting diode (LED) includes a rectifier unit, a voltage-dividing circuit, a control unit, a voltage converter, a resistance and a capacitor. The rectifier unit rectifies an AC power to generate a first operation voltage. The voltage-dividing circuit generates a voltage-dividing signal. The control unit includes a regulating unit and a pulse width modulation (PWM) unit. An output terminal of the regulating unit is coupled to the PWM unit. The PWM unit outputs a PWM signal. The voltage converter adjusts a driving voltage and a driving current of the LED. The resistance is coupled between an output terminal of the regulating unit and a diode. The capacitor is coupled between a power input terminal of the regulating unit and a ground terminal. The PWM unit adjusts the PWM signal according to the voltage-dividing signal and a feedback signal output by the voltage converter. | 12-02-2010 |
| 20100301766 | OPERATING DEVICE FOR OPERATING A LIGHT SOURCE, IN PARTICULAR LED - The invention relates to an operating device for operating an LED light source. The device includes a first power converter stage (P | 12-02-2010 |
| 20100315017 | POWER CONVERTING CIRCUIT AND CONTROLLER THEREOF - A controller which receives electric power required for operating through a driving voltage terminal and controls a converting circuit to convert an input voltage into an output voltage is provided. The controller is latched to stop providing a part or all of functions until the input voltage is removed. Therefore, the issues of the converting circuit in related arts in shortened life-span and safety of users due to can be avoided in the present invention. | 12-16-2010 |
| 20100315018 | Method and apparatus for producing linearized optical signals - A method for producing an optical output in substantially linear relationship with an input electrical AC signal, including the following steps: providing a light-emitting transistor having emitter, base, and collector regions, the light-emitting transistor producing light emission from its base region in response to electrical signals applied with respect to the emitter, base, and collector regions; applying a signal derived from the input signal to the light-emitting transistor; deriving a feedback signal from an electrical operating signal of the light-emitting transistor; applying a predistortion factor to the derived feedback signal to produce a predistorted feedback signal; and combining the predistorted feedback signal with the input signal to produce the signal derived from thr input signal; whereby the light emission comprises an optical output in substantially linear relationship with the input signal. | 12-16-2010 |
| 20100315019 | LED DRIVER CIRCUIT AND METHOD, AND SYSTEM AND METHOD FOR ESTIMATING THE JUNCTION TEMPERATURE OF A LIGHT EMITTING DIODE - A driver circuit ( | 12-16-2010 |
| 20100320930 | LIGHTING APPARATUS - A lighting apparatus including a reflector having a reflective exterior surface partially enclosing an interior space and defining a focal point within the interior space, and a high pressure discharge lamp positioned substantially at the focal point of the reflective exterior surface. In some examples, the high pressure discharge lamp includes an arc tube containing mercury, a metal halide, or sodium. In some examples, the reflective exterior surface extends along a longitudinal axis and curves around the longitudinal axis. In some example, the reflective exterior surface defines an elliptical paraboloid. | 12-23-2010 |
| 20100320931 | DRIVING A LIGHT-EMITTING DIODE - An input stage ( | 12-23-2010 |
| 20100327765 | LOW ENERGY TRANSFER MODE FOR AUXILIARY POWER SUPPLY OPERATION IN A CASCADED SWITCHING POWER CONVERTER - A cascaded power converter having an auxiliary power supply operated from the second switching power stage provides efficient operation by activating the auxiliary power supply early in the startup process. A low energy transfer operating mode is initiated in the second switching power stage to charge the auxiliary power supply output without generating significant disruption at the load. After the first switching power stage is started and the intermediate node voltage has increased to a level sufficient to operate the second switching power stage, the final switching power stage enters a normal operating mode. The low energy transfer operating mode has a substantially reduced switching rate and pulse width from that of the normal operating mode. | 12-30-2010 |
| 20100327766 | WIRELESS EMERGENCY LIGHTING SYSTEM - In embodiments of the present invention improved capabilities are described for systems and methods that provide for a power outage lighting management within an environment, comprising a power outage detection device adapted to detect a power outage condition and to wirelessly transmit power outage indication data to a plurality of lighting systems within the environment, where at least one of the plurality of lighting systems include an LED light source that is powered by an internal power source. | 12-30-2010 |
| 20110001435 | System and Method For Controlling an Output Illumination Level of a Lighting System - A method of controlling a brightness level of an LED by supplying power to an LED in series with a field effect transistor and a resistor. A first voltage is supplied from a digital potentiometer to an operational amplifier. The field effect transistor is activated based on the first voltage from the operational amplifier and a second voltage is varied across the resistor when the field effect transistor is activated. The varying of the second voltage across the resistor causes a change in the brightness level of the LED. | 01-06-2011 |
| 20110001436 | Power Management Unit with Light Module Identification - In embodiments of the present invention, a method and system is provided for designing improved intelligent, LED-based lighting systems. The LED based lighting systems may include fixtures with one or more of rotatable LED light bars, integrated sensors, onboard intelligence to receive signals from the LED light bars and control the LED light bars, and a mesh network connectivity to other fixtures. | 01-06-2011 |
| 20110006701 | LIGHT-EMITTING DIODE DEVICE AND MANUFACTURING METHOD THEREOF - A light-emitting diode (LED) device and manufacturing methods thereof are provided, wherein the LED device comprises a substrate, a first type conductivity semiconductor layer, an active layer, a second type conductivity semiconductor layer, a transparent conductive oxide stack structure, a first electrode, and a second electrode. The first semiconductor layer on the substrate has a first portion and a second portion. The active layer and the second semiconductor layer are subsequently set on the first portion. The transparent conductive oxide stack structure on the second semiconductor layer has at least two resistant interfaces. The first electrode is above the second portion, and the second electrode is above the transparent conductive oxide stack structure. | 01-13-2011 |
| 20110012528 | Control Switch - A method and apparatus are provided for operating a control switch. In one embodiment, the control switch includes an input terminal coupled to an alternating current (AC) power supply, a load terminal coupled to a load, a triac circuit coupled to the input terminal and the load terminal, a microcontroller and a power supply. The triac circuit may be configured to receive a triggering voltage and provide an activation pulse to the load based on one or more triggering voltage signals supplied by the microcontroller. In another embodiment, the power supply may be configured to step down AC power received from the input terminal and supply line voltage to the microcontroller. | 01-20-2011 |
| 20110012529 | LIGHTING APPARATUS - Lighting apparatuses that include a reflector attached to an adjustable support, a reflective surface on the reflector that defines an interior space and a focal point within the interior space, a light source partially disposed within the interior space and positioned substantially near the focal point, wherein the light source is configured to generate light by passing an electrical current through the lighting element. In some examples, the adjustable support defines a flexible stem. In other examples, the adjustable support defines a collection of bars rotatably connected at pivot points. | 01-20-2011 |
| 20110018460 | Discharge lamp lighting apparatus - In an optimum frequency detection sequence of a discharge lamp, the frequency control circuit performs a sweep operation in which, while the frequency control circuit monitors a syntonization degree signal, a frequency control signal is changed, so that frequency is changed, starting from either an upper or lower limit frequency of a periodic driving circuit, in a range that does not exceed the other frequency, wherein after completion of the sweep operation, the frequency control circuit determines a value of the frequency control signal corresponding to a resonance frequency of the resonant circuit, and inputs the value into a frequency driving circuit, wherein at least in a period of the sweep operation, an inverter receives power supply from a sweep time power supply circuit for supplying electric power with constant supply capability, which is limited to a range in which breakdown does not occur in the discharge lamp. | 01-27-2011 |
| 20110018461 | METHOD FOR PRODUCING A HIGH-PRESSURE DISCHARGE LAMP, METHOD FOR PRODUCING LIGHT USING A HIGH-PRESSURE DISCHARGE LAMP AND DIGITAL VIDEO PROJECTOR - A method for providing a high-pressure discharge lamp may include establishing a setpoint power of the high-pressure discharge lamp, establishing an upper limit I | 01-27-2011 |
| 20110025224 | LIGHT EMITTING DEVICE INCLUDING SEMICONDUCTOR NANOCRYSTALS - A voltage driven light emitting device includes an electroluminescent material and semiconductor nanocrystals, luminescent organic small molecules, mixtures of emissive species molecules, or conductive polymers. The semiconductor nanocrystals, luminescent organic small molecules, mixtures of emissive species molecules, or conductive polymers emit light. The semiconductor nanocrystals, luminescent organic small molecules, mixtures of emissive species molecules, or conductive polymers can be doped to provide desired emission characteristics. Devices that share a substrate and emit more than one color may be conveniently made. | 02-03-2011 |
| 20110025225 | Light-Emitting Diode Driver Circuit and Lighting Apparatus - A light-emitting diode driver circuit includes: a first-rectifier circuit to output a first-rectified voltage; a transformer including primary and secondary coils and an auxiliary coil inductively coupled to the primary or secondary coils, the primary coil being applied with the first-rectified voltage; a transistor connected in series to the primary coil; a second-rectifier circuit to output a second-rectified voltage obtained by rectifying a voltage generated in the auxiliary coil; a capacitor to be charged with the second-rectified voltage; and a control circuit to control on and off of the transistor based on a charging voltage of the capacitor so that the charging voltage becomes equal to a predetermined voltage, the secondary coil outputting a voltage that varies with a frequency corresponding to a frequency of the first-rectified voltage and that corresponds to a turns ratio between the primary and secondary coils, as a voltage for driving a light-emitting diode. | 02-03-2011 |
| 20110025226 | CONTROL DEVICE FOR CONTROLLING A DISCHARGE LAMP - An electronic starter ( | 02-03-2011 |
| 20110025227 | Drive Circuit to adjust a luminance of a light emitting element based on a PWM signal, and a portable information terminal including the drive circuit - A drive circuit ( | 02-03-2011 |
| 20110025228 | WAVEFORM DETECTION AND COMBINED STEP AND LINEAR DIM CONTROL - The present invention relates to a detection circuit ( | 02-03-2011 |
| 20110031893 | SEMICONDUCTOR LIGHT EMITTING DEVICE UTILISING PUNCH-THROUGH EFFECTS - A light emitting device ( | 02-10-2011 |
| 20110037408 | Method for Operating a Gas Discharge Lamp and Lighting System Comprising a Gas Discharge Lamp - A method for operating a discharge lamp ( | 02-17-2011 |
| 20110043126 | Stepped intensity electric road flare - A stepped intensity electric road flare having a housing supporting a circuit. The circuit comprises an led light source, a power controller and a power supply. The power controller energizes the led light source with the power supply such that the led light source emits a varying light having at least one perceived fixed intensity within a range of emitted intensities. The road flare of the present invention provides a perceived steady light having a perceived fixed intensity during a portion or time zone of its waveform thereby communicating its exact location. In addition because its intensity changes during other portions or time zones of its waveform it also demands attention. The present invention is therefore an attention getting safety device communicating its exact location. The present invention both alerts drivers to a hazard and guides them past the hazard. In addition the emitted light of the present invention is of a reddish color and concentrated by an optic into a powerful light beam. An incendiary road flare also emits a powerful light having a reddish color and, at portions of its burn cycle, perceived as a steady light. An incendiary road flare also varies its intensity during its burn cycle. Therefore the electric road flare of the present invention emits light having characteristics similar to the characteristics of the light emitted by an incendiary road flare. The present invention therefore both alerts and guides drivers with an effectiveness similar to that of the incendiary road flare. | 02-24-2011 |
| 20110043127 | LED ASSEMBLY AND CIRCUIT FOR USE IN FLUORESCENT LAMP FIXTURES - An LED assembly has an AC voltage applied from a fluorescent lamp fixture via one or more power supply connectors belonging to a base which can be attached to the fluorescent lamp fixture, and the LED assembly includes a resistive circuit having impedance equivalent to that of a filament of a fluorescent lamp which can be attached to the fluorescent lamp fixture, a rectifier circuit for rectifying an AC voltage supplied via the resistive circuit, and a load circuit to be operated in response to a supply of a voltage rectified by the rectifier circuit. | 02-24-2011 |
| 20110043128 | CIRCUIT DEVICE DRIVING METHOD AND CIRCUIT DEVICE - A drive method for a circuit apparatus includes: a cold cathode electron-emission element; a MOS transistor in which one of a source region and a drain region is electrically connected to one electrode of the cold cathode electron-emission element; a first voltage source electrically connected to another electrode of the cold cathode electron-emission element; and a second voltage source which is electrically connected to a semiconductor well region in which the MOS transistor is formed. The drive method is provided with: an electron-emission part forming process in which a first potential signal is outputted from the first voltage source and a second potential signal, which is different from the second potential signal, is outputted from the second voltage source so that a forward current flows in a p-n junction between the semiconductor well region and the one region when an electron-emission part is formed in the cold cathode electron-emission element. | 02-24-2011 |
| 20110043129 | DIM RANGE ENHANCEMENT FOR LED DRIVER CONECTED TO PHASE-CUT DIMMER - The present invention relates to a driving circuit ( | 02-24-2011 |
| 20110043130 | APPARATUS FOR COUPLING POWER SOURCE TO LAMP - An apparatus ( | 02-24-2011 |
| 20110050116 | ELECTRONIC BALLAST DEVICE AND OPERATION METHOD THEREOF - An electronic ballast device includes a stabilizer and a sweep frequency circuit for preheating. The stabilizer includes a first input terminal, a second input terminal and an output terminal connected to a fluorescent lamp. The sweep frequency circuit includes a boost element, an impedance element, a switch and a frequency selective circuit. The boost element includes a first end and a second end separately electrically connected to the first input terminal and the impedance element. The switch includes an input terminal electrically connected to the common contact point of the boost element and the impedance element, an output terminal and a reference voltage input terminal electrically connected to the common contact point of the boost element and the stabilizer. Furthermore, the frequency selective circuit is electrically connected to the output terminal of the switch, the first input terminal of the stabilizer and the second input terminal of the stabilizer. | 03-03-2011 |
| 20110050117 | Integrated circuit module having a display device - An IC module having a display device includes an IC module, a power supply device and at least a display panel. The IC module has a substrate, at least an IC chip and a package. The power supply device has a magnetic block, a circuit board, a housing and a coil. At least a capacitor is mounted on the circuit board. Besides, the display panel is mounted on an outer surface of the housing. Given the aforementioned components, when those components are shaken back and forth, the magnetic block is moved back and forth in the coil to make the coil generate power. The generated power is further stored in the capacitor of the circuit board. As such, after acquiring power, the display panel displays the information in association with the IC module. | 03-03-2011 |
| 20110050118 | METHOD FOR SYNTHESIZING ANTHRACENE DERIVATIVE AND ANTHRACENE DERIVATIVE, LIGHT EMITTING ELEMENT, LIGHT EMITTING DEVICE, ELECTRONIC DEVICE - It is an object to provide a novel method for synthesizing an anthracene derivative with the small number of steps. It is another object to provide a novel anthracene derivative. It is further another object to provide a light-emitting element, a light-emitting device, and an electronic device, each using the anthracene derivative. A method for synthesizing an anthracene derivative represented by a general formula (1) is provided by coupling a 9-arylanthracene derivative having an active site at a 10-position with a 9-arylcarbazole derivative having an active site in an aryl group using metal, a metal compound, or a metal catalyst. | 03-03-2011 |
| 20110057576 | POWER SUPPLY DEVICE AND LIGHTING EQUIPMENT - In a power supply device according to one embodiment, a reference signal Vref | 03-10-2011 |
| 20110057577 | POWER SUPPLY DEVICE AND LIGHTING EQUIPMENT PROVIDED WITH POWER SUPPLY DEVICE - A power supply device according to one embodiment is configured to control a lighting of semiconductor light-emitting elements, wherein a dimming signal is canceled during a predetermined time period (T) from a timing immediately after power-ON, so as to light on light-emitting diodes to have a predetermined light amount, for example, a minimum light amount. After an elapse of the predetermined time period (T), cancellation of the dimming signal is released to light on the light-emitting diodes to have a light amount instructed by the dimming signal. | 03-10-2011 |
| 20110057578 | LED LIGHTING DEVICE AND ILLUMINATION APPARATUS - The present invention provides a pair of input terminals to which AC voltage is input, the AC voltage being phase-controlled by a dimmer for phase-controlling AC voltage of an AC source; a damping circuit which has a resistor inserted to a position, into which input current flows from the AC source via the dimmer in series, and a capacitor and an inductor which form a closed circuit together with the AC source and the dimmer, and suppresses high-frequency vibration generated in the dimmer when a phase control element of the dimmer is turned on; and an LED lighting circuit which rectifies AC voltage phase-controlled and input via the pair of input terminals, converts DC output voltage, which is obtained by rectification, so that the voltage adapts to a load, and lights the LED. | 03-10-2011 |
| 20110062884 | REFERENCE SIGNAL GENERATOR AND PWM CONTROL CIRCUIT FOR LCD BACKLIGHT - There are provided a reference signal generator and a PWM control circuit for LCD backlight. The reference signal generator and the PWM control circuit for LCD backlight may be configured to respectively include: a current control unit that controls generation of a variable current sequentially changing; a current generating unit that generates a variable current changing sequentially; and a reference signal generating unit that controls charging until a charged voltage charged by the variable current generated by the current generating unit reaches a first reference voltage level, starts discharging when the charged voltage reaches the first reference voltage level, controls discharging until the charged voltage reaches a second reference voltage level, and generates a triangular wave reference signal that has a frequency buffering interval in which a frequency sequentially changes when the initial driving completion signal or the protection signal is input. | 03-17-2011 |
| 20110062885 | METHOD OF DRIVING AN UHP GAS-DISCHARGE LAMP - The invention describes a method of driving a gas-discharge lamp ( | 03-17-2011 |
| 20110068706 | LED LIGHTING DEVICE AND ILLUMINATION APPARATUS - The present invention provides an LED lighting device including: a rectifying circuit having AC input ends connected to an AC source; a converter which has input ends connected to DC output ends of the rectifying circuit and output ends, to which an output capacitor is connected in parallel, connected to an LED, and lights the LED; a control unit for changing continued DC output current of the converter in accordance with a dimming degree; and a bypass circuit which is connected to the output ends of the converter in parallel with the output capacitor and makes bypass current flow, the bypass current being larger than lighting current, which flows through the LED, at least in the vicinity of a dimming lower limit. | 03-24-2011 |
| 20110068707 | LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS - A light-emitting device includes a power feeding line to which a predetermined voltage is supplied; a light-emitting element formed of a first electrode, a second electrode, and a light-emitting layer interposed between the first electrode and the second electrode; and a driving transistor that controls the amount of current supplied to the light-emitting element from the power feeding line. The power feeding line includes a portion interposed between the first electrode and the driving transistor. | 03-24-2011 |
| 20110074309 | FIELD EMISSION DEVICE AND METHOD OF OPERATING THE SAME - Provided are a field emission device enabling rapid pulse operation and a method of operating the same. The field emission device includes a cathode electrode including a field emission source, an anode electrode disposed to face the cathode electrode and accelerating electrons emitted from the field emission source, a current controller controlling field emission current flowing through the cathode electrode, and a field emission controller applying a pull-up voltage to the cathode electrode when the current controller is turned off. | 03-31-2011 |
| 20110074310 | DISCHARGE LAMP LIGHTING APPARATUS - In order to suppress a peak of an excessive current and suppress a variation in a resonance voltage of a resonator, which are likely to occur immediately after a discharge lamp starts lighting, in a case where a high-frequency current continuously flows asymmetrically with respect to a zero current instead of flowing symmetrically on positive and negative sides immediately after the lighting since electrodes of the discharge lamp are not evenly warmed, the resonance voltage and the high-frequency current are finely adjusted in a resonance voltage and high-frequency current setting method including setting a drive frequency of an inverter circuit and varying output from a down-converter. | 03-31-2011 |
| 20110074311 | HIGH-VOLTAGE DISCHARGE LAMP LIGHTING DEVICE AND LIGHTING FIXTURE - A device includes a direct current power circuit configured to convert an alternating current voltage from an alternating current power source into a direct current voltage, an output unit configured to convert a direct current from the direct current power circuit into a square wave alternating current whose polarity is inverted at a prescribed frequency and to supply the square wave alternating current to a high-pressure discharge lamp, a controller, and an anomaly detector configured to detect an instantaneous voltage drop of the alternating current power source. When the anomaly detector detects the instantaneous voltage drop, the controller switches from a normal lighting mode of controlling the output unit to supply the high-pressure discharge lamp with a square wave alternating current to a lighting maintained mode of controlling the output unit to supply the high-pressure discharge lamp with a square wave alternating current having a lower frequency than the square wave alternating current in the normal lighting mode. In this way, it is possible to maintain lighting of the high-pressure discharge lamp even upon occurrence of an instantaneous power failure, an instantaneous voltage drop, and the like. | 03-31-2011 |
| 20110080109 | HIGH EFFICIENCY LED DRIVER WITH CURRENT SOURCE REGULATIONS - The present invention provides a control circuit for LED driver. A voltage-feedback circuit is coupled to LEDs to sense a voltage-feedback signal for generating a voltage loop signal. Current sources are coupled to the LEDs to control LED currents. A detection circuit is connected to sense voltages of current sources for generating a current-source loop signal in response to a minimum voltage of the current sources. Furthermore, a buffer circuit generates a feedback signal in accordance with the voltage loop signal and the current-source loop signal. The feedback signal is coupled to limit a maximum voltage of the LEDs and regulate the minimum voltage across the current sources. | 04-07-2011 |
| 20110080110 | LOAD CONTROL DEVICE FOR A LIGHT-EMITTING DIODE LIGHT SOURCE - A light-emitting diode (LED) driver is adapted to control either the magnitude of the current conducted through a LED light source or the magnitude of a voltage generated across the LED light source. The LED driver comprises a power converter circuit for generating a DC bus voltage, and an LED drive circuit for receiving the bus voltage and adjusting the magnitude of the current conducted through the LED light source. The LED driver is operable to dim the LED light source using either a pulse-width modulation technique or a constant current reduction technique. The LED drive circuit may comprise a controllable-impedance circuit, such as a linear regulator. The LED driver may be operable to control the magnitude of the bus voltage to optimize the efficiency and reduce the power dissipation in the LED drive circuit, as well ensuring that the load voltage and current do not have any ripple. | 04-07-2011 |
| 20110080111 | CONFIGURABLE LOAD CONTROL DEVICE FOR LIGHT-EMITTING DIODE LIGHT SOURCES - A configurable light-emitting diode (LED) driver is adapted to control a plurality of different LED light sources, which may be rated to operate using different load control techniques, different dimming techniques, and different magnitudes of load current and voltage. The LED driver comprises a power converter circuit for generating a DC bus voltage, and an LED drive circuit for receiving the bus voltage and adjusting either the magnitude of the current conducted through the LED light source or the magnitude of the voltage across the LED light source. The LED driver is operable to dim the LED light source using either a pulse-width modulation technique or a constant current reduction technique, and may be configured using a programming device and a personal computer. | 04-07-2011 |
| 20110080112 | CLOSED-LOOP LOAD CONTROL CIRCUIT HAVING A WIDE OUTPUT RANGE - A load control circuit, such as a light-emitting diode (LED) driver, for controlling the amount of power delivered to an electrical load, such as an LED light source, comprises a regulation transistor adapted to be coupled in series with the load, and a feedback circuit coupled in series with the regulation transistor, whereby the load control circuit is able to control the magnitude of a load current conducted through the load from a minimum load current to a maximum load current, which is at least approximately one thousand times larger than the minimum load current. The feedback circuit generates at least one load current feedback signal representative of the magnitude of the load current. The regulation transistor operates in the linear region to control the magnitude of the load current conducted through the load in response to the magnitude of the load current determined from the load current feedback signal. | 04-07-2011 |
| 20110080113 | SYSTEM AND METHOD FOR OUTPUT FLUX MEASUREMENT OF A LIGHT EMITTING DIODE - A method of estimating the output light flux of a light emitting diode, comprises applying a drive current waveform to the LED over a period of time comprising a testing period. The forward voltage across the LED is monitored during the testing period, and the output light flux is estimated as a function of changes in the forward voltage. | 04-07-2011 |
| 20110084625 | Switching Circuit Adapted in LED Circuit - A switching circuit adapted in an LED circuit and an LED circuit are provided. The switching circuit has a mode-selecting circuit, a comparator and a control module. The mode-selecting circuit has a voltage-dividing module and a switch. The voltage-dividing module receives and divides a reference voltage to further generate a working voltage. The switch is connected to the voltage-dividing module, wherein the switch has an output. The comparator comprises a first input connected to the switch, a second input and a comparator output. During a measuring mode, the switch transfers the reference voltage and the second input is connected to the comparator output. During a working mode, the switch transfers the working voltage, the second input of the comparator receives an output voltage of the LED circuit and the control module generates a control signal according to the voltage of the comparator output to switch the LED circuit. | 04-14-2011 |
| 20110089854 | Circuit And Method for Controlling Light Emitting Device, And Integrated Circuit Therefor - The present invention discloses a circuit and a method for controlling a light emitting device, and an integrated circuit therefore. The circuit for controlling a light emitting device comprises: a power stage controller circuit controlling a power stage circuit to convert an input voltage to an output voltage, which is supplied to at least one light emitting device channel including at least one light emitting device; a transistor switch in the light emitting device channel; and a current source circuit controlling a current through the light emitting device channel, wherein the power stage controller circuit and the current source circuit are integrated in an integrated circuit which provides a control voltage to control a gate of the transistor switch. | 04-21-2011 |
| 20110089855 | KNOWLEDGE-BASED DRIVER APPARATUS FOR HIGH LUMEN MAINTENANCE AND END-OF-LIFE ADAPTATION - A knowledge-based driver is provided for powering a solid-state light source with a constant current, including a memory that stores lumens per amp and volts per amp performance characterizations of the light source over time, and a controller that operates in a test mode to estimate the light source degradation based on voltage feedback obtained at a predetermined test current value, and to adjust the drive current in normal operating mode according to the estimated device degradation to implement constant lumens control without external optical feedback components. | 04-21-2011 |
| 20110089856 | LIGHT EMITTING DIODE LAMP AND CONTROL CIRCUIT THEREOF - A control circuit for controlling current through LEDs of an LED lamp includes a voltage regulator, a feedback circuit with an amplifier and a photo-resistor. The voltage regulator includes an output terminal connecting with the LEDs and a feedback terminal The amplifier includes an in-phase input end coupling with an output end of the LEDs, an out-phase input end and an output end connected to the feedback terminal of the voltage regulator. The photo-resistor is connected between the out-phase input end of the amplifier and the ground. The photo-resistor has a resistance increasing along with a decrease of the light intensity of the LEDs. The increase of resistance of the photo-resistor is fed back to the voltage regulator via the amplifier, to thereby increase the electric current through the LEDs to maintain the light intensity of the LED lamp within an acceptable range. | 04-21-2011 |
| 20110089857 | PROGRAMMABLE USER INTERFACE DEVICE FOR CONTROLLING AN ELECTRICAL POWER SUPPLIED TO AN ELECTRICAL CONSUMER - The invention relates to a user interface device and a method for controlling an electrical consumer ( | 04-21-2011 |
| 20110095699 | LIGHTING DELAY CIRCUIT - The lighting delay circuit can keep a light being on for a predetermined time then turn off the light. The circuit comprises a thermistor to sense temperature around the light when the light is on, an electronic switch controlled by the thermistor, and a relay controlled by the electronic switch to turn off the light when the electronic switch is turned on. | 04-28-2011 |
| 20110095700 | LED DRIVE CIRCUIT, LED ILLUMINATION FIXTURE, LED ILLUMINATION DEVICE, AND LED ILLUMINATION SYSTEM - An LED drive circuit in which an alternating voltage is input and an LED is driven, and which is capable of connecting to a phase control dimmer. The LED circuit is provided with a current extractor for extracting a current from a power supply feed line for feeding an LED drive current to the LED; and an extraction timing adjuster for operating the current extractor for a predetermined period of time after the start of a voltage fluctuation in the power supply feed line, the voltage fluctuation accompanying output oscillation of the phase control dimmer. | 04-28-2011 |
| 20110095701 | LIGHT EMITTING MODULE - A light emitting module includes an organic EL light emitting element and a support body supporting the organic EL light emitting element. The support body is attached to the organic EL light emitting element at the side of the non-light emitting surface of the light emitting module to cover one surface of the organic EL light emitting element. The organic EL light emitting element includes power feeding electrodes. The support body includes openings formed in a corresponding relationship with the power feeding electrodes. The power feeding electrodes exposed on the non-light emitting side of the support body through the openings. The support body includes power feeding terminals. The power feeding terminals partially exposed on the non-light emitting side of the support body. The power feeding terminals electrically connected to the power feeding electrodes by electric connection members extending via the non-light emitting side and the openings of the support body. | 04-28-2011 |
| 20110101883 | LED LIGHTING FOR LIVESTOCK DEVELOPMENT - Apparatus and associated methods involve a hangable LED light assembly constructed to provide a selected color output illumination as a function of excitation intensity. In an illustrative example, the color output may be selected to promote biological development throughout livestock development stages (e.g., incubation, growth, and reproduction). The light intensity may controllable, for example, in response to a light dimmer arranged to modulate AC excitation applied to the LED downlight. As the light intensity is decreased in response to a simple dimmer control, the spectral output of the LED downlight may shift its output wavelengths. Accordingly, some exemplary installations may provide controlled combinations of intensity and color to substantially optimize lighting conditions for livestock. | 05-05-2011 |
| 20110109240 | LIGHT-EMITTING ELEMENT DRIVE CIRCUIT SYSTEM, AND ELECTRONIC DEVICE - A light-emitting element drive circuit system for driving a light-emitting element includes a current circuit section that drives the light-emitting element at a preset drive current value, and a current value setting section. The current value setting section sets the drive current value so that the drive current value is changed during a preset transition period from a first current value to a second current value that is not equal to the first current value, and changed during a preset transition period from the second current value to a third current value that is not equal to both the first current value and the second current value. | 05-12-2011 |
| 20110109241 | LED LIGHTING DEVICE AND ILLUMINATING DEVICE - According to one embodiment, an LED lighting device comprises at least one normally-on type switching element, an output generation unit that generates DC output by an on-off operation of the switching element, a semiconductor light emitting element that is lit by the DC output generated by the output generation unit, and a driving control unit that causes the switching element to perform an off operation using a current passed through the semiconductor light emitting element. | 05-12-2011 |
| 20110115402 | Systems and Methods for Distributing Power and Data in a Lighting System - The described embodiments provide systems and methods for delivering power and data to lighting system. Specifically, the embodiments provide systems and methods for delivering power and data to the type of lighting system which is often used in entertainment programs and specifically live shows. Embodiments disclose various systems incorporating truss technology in conjunction with lighting, dimming, power and data distribution systems encompassing a complete and integrated mobile and rapid deployment lighting and lighting support system. Further embodiments describe truss systems used for managing cable. | 05-19-2011 |
| 20110115403 | Switched-Mode Power Supply, LED Lighting System and Driver Comprising the Same, and Method for Electrically Driving a Load - The present invention is related to a switched-mode power supply. It is also related to a LED lighting system and driver which comprise such a switched-mode power supply. In addition, the present invention is related to a method for electrically driving a load. According to the present invention, the switched-mode power supply is switched from a charging state, in which an energy storage is charged, to a discharging state, in which the energy storage feeds a load, when a current limit has been exceeded. This current limit is set proportional to an instantaneous voltage outputted by the rectifier. | 05-19-2011 |
| 20110115404 | METHOD AND DEVICE FOR DETERMINING CALIBRATION DATA FOR AN LED LIGHT SOURCE WHILE TAKING INTO CONSIDERATION THE BARRIER LAYER TEMPERATURE - In various embodiments, a method for determining calibration data for a light source is provided. The method may include determining at least one of a photometric quantity and a colorimetric quantity of the light source; determining a color stimulus specification using at least one of the photometric quantity and the colorimetric quantity; and determining the calibration data as a function of the color stimulus specification and a temperature of the light source. | 05-19-2011 |
| 20110121747 | END-OF-LIFE PROTECTION CIRCUIT AND METHOD FOR HIGH INTENSITY DISCHARGE LAMP BALLAST - An apparatus and method for detecting an end of life (EOL) condition of a lamp that exhibits a re-ignition behavior. A voltage is applied to the lamp to cause the lamp to start emitting light, and a lamp re-ignition voltage to normal lamp voltage difference after a mask-off period expires is monitored. The lamp is determined to have reached the EOL condition when a predetermined percentage of high difference half cycles occur during a set number of lamp voltage half cycles that are measured during a measurement window. The method continuously monitors the lamp re-ignition voltage to normal lamp voltage difference and records whenever the lamp re-ignition voltage to normal lamp voltage difference is higher than the re-ignition difference threshold level at any lamp voltage half cycle. An EOL lamp is detected when a predetermined number of high difference half cycles occurs in a set total number of lamp voltage half cycles measured in a rolling measurement window. | 05-26-2011 |
| 20110121748 | DECODING CIRCUIT AND DECODING METHOD THEREOF - A decoding circuit is adapted for decoding an input signal. The input signal includes at least a break and the time length of the break is a preset time. The decoding circuit includes a decoding unit and a detecting unit. The detecting unit detects whether the voltage level of the input signal is kept at a specific logic level for more than the preset time. If the input signal is kept at the specific logic level for more than the preset time, the detecting circuit, according to the voltage level of the specific logic level, outputs the input signal or the inverted input signal to the decoding unit so as to perform a decoding process. | 05-26-2011 |
| 20110121749 | LED ARRAY LUMINAIRES - The present invention provides LED array systems with improved methods of powering LED in the array by monitoring the relationship between temperature and driving power to predict how much power can be safely applied to the LEDs. The present invention also provides for a control system for LED arrays that allows for display of images or light patterns across and array of luminiairs over a low bandwidth control protocol. The present invention also provides for a LED array luminair with reduced color fringing, light spill reduction and beam angle control. | 05-26-2011 |
| 20110121750 | Self-oscillating half-bridge drive device and light-emitting device - Various embodiments relate to a self-oscillating half-bridge drive device, which may include a half-bridge inverter circuit having a first primary switch and a second primary switch; and a pull-down unit. The pull-down unit may prevent the other of the primary switches from being turned on when one of the primary switches is in an on state so as to avoid turning on of both primary switches. In addition, various embodiments also relate to a light-emitting device having such a self-oscillating half-bridge drive device. | 05-26-2011 |
| 20110121751 | LED POWER-SUPPLY DETECTION AND CONTROL - A circuit detects the type of a power supply driving an LED by analyzing a signal received from the power supply. The circuit controls a behavior of the LED, such as its reaction to a dimmer or to thermal conditions, based on the determined type. | 05-26-2011 |
| 20110121752 | TWO-WIRE DIMMER SWITCH FOR LOW-POWER LOADS - A two-wire load control device (such as, a dimmer switch) is operable to control the amount of power delivered from an AC power source to an electrical load (such as, a high-efficiency lighting load) and has substantially no minimum load requirement. The dimmer switch includes a bidirectional semiconductor switch, which is operable to be rendered conductive each half-cycle and to remain conductive independent of the magnitude of a load current conducted through semiconductor switch. The dimmer switch comprises a control circuit that conducts a control current through the load in order to generate a gate drive signal for rendering the bidirectional semiconductor switch conductive and non-conductive each half-cycle. The control circuit may provide a constant gate drive to the bidirectional semiconductor switch after the bidirectional semiconductor switch is rendered conductive each half-cycle. The bidirectional semiconductor switch may comprise, for example, a triac or two field-effect transistors coupled in anti-series connection. | 05-26-2011 |
| 20110127926 | Discharge lamp light apparatus - A discharge lamp lighting apparatus for lighting a discharge lamp where a voltage generated in a secondary side winding can be superimposed on an output voltage of an inverter and is impressed between electrodes, where while a periodic drive circuit generates an inverter drive signal so that frequency of the inverter becomes a start-up initial frequency, electric supply control circuit controls a power supply circuit to output no-load opening voltage, where the frequency of the inverter gradually decreases until reaching a first threshold frequency from the start-up initial frequency, where when the frequency of the inverter reaches the first threshold frequency, the periodic drive circuit generates the inverter drive signal so that the frequency of the inverter becomes stable lighting frequency, and where the electric supply control circuit controls the power supply circuit to output current which is sufficient to maintain electric discharge of the discharge lamp. | 06-02-2011 |
| 20110133666 | DISPLAY, METHOD OF MANUFACTURING DISPLAY AND ELECTRONIC DEVICE - A display including a light-emitting element is provided. The light-emitting element includes a lower display electrode, an organic layer including a light-emitting layer, and an upper display electrode, wherein the lower display electrode is formed in a source-drain electrode layer or a gate electrode layer. A method of manufacture and an electronic device including the display are also provided. | 06-09-2011 |
| 20110140630 | DRIVE CIRCUIT FOR HIGH-BRIGHTNESS LIGHT EMITTING DIODES - A drive circuit includes a DC/DC converter, an outer control loop providing an output voltage representing a comparison between a load current and a reference voltage, a multiplier multiplying the outer control loop output voltage with a sample of the rectified output and provide an output current, a current amplifier comparing an input line current sample and the multiplier output current, a comparator driving the switch with a modulated output based on the current amplifier output and a sawtooth reference, and an upper voltage limit loop having an output in electrical communication with the outer control loop output, wherein the outer control loop output voltage is impacted by the upper voltage limit loop output during a zero load scenario. The drive circuit also includes a line voltage transformer and a lightning suppression circuit coupled to the voltage rectifier output. | 06-16-2011 |
| 20110140631 | DETACHABLE LED LIGHTING LAMP - A detachable LED lighting lamp includes a light source having a light source body and a light head integrally connected with the light source body; a lamp holder having a light source stand and a power supply socket disposed at a bottom end of the light source stand; and a power supply having a power source body, a plug fixedly connected with an upper end of the power source body, and an electrical wire connected with a bottom end of the power source body. The power supply further has a drive power supply disposed therein. The light head matches with the light source stand in shape, the power supply socket matches with the plug in shape. | 06-16-2011 |
| 20110140632 | MR16 Type High Power Led Lamp - The invention refers to a MR16 high power LED lamp, particularly a MR16 high power LED lamp which can adapt to working frequency alternating current or high frequency alternating current with nominal working voltage of 12V AC. The LED lamp comprises a driver and a LED illuminant, wherein, the driver comprises a rectifying circuit, a constant current circuit, and an output circuit. An input end of the rectifying circuit inputs low-voltage alternating current with working frequency/high frequency of 12V. When the input end is input with low frequency alternating current of 12V or high frequency alternating current of 12V, the LED lamp is lighted, and value of resistance R is regulated for ensuring current value, namely value of constant current. | 06-16-2011 |
| 20110140633 | Collimated Illumination System Using an Extended Apparent Source Size to Provide a High Quality and Efficient Fixture - A downlighting illumination system ( | 06-16-2011 |
| 20110148317 | METHOD FOR DRIVING A HIGH-PRESSURE GAS DISCHARGE LAMP OF A PROJECTOR SYSTEM - A method for driving a high-pressure gas discharge lamp of a projector system, which is suitable to produce and to supply to a light valve device during a projection interval ( | 06-23-2011 |
| 20110148318 | PHASE CONTROLLED DIMMING LED DRIVER SYSTEM AND METHOD THEREOF - The present invention relates to providing an improved dimming driver circuitry, system and a method thereof. The dimming driver circuitry is configured to enable dimming intensity of light generated by one or more light sources, the dimming driver circuitry being connected to a dimmer that provides to it an alternating current (AC) signal. The dimming driver circuitry may in some examples not include a processing unit. Additionally or alternatively, the dimming driver circuitry may in some examples apply amplitude modulation to the output current provided to the one or more light sources. In some of these examples, the dimming driver circuitry may begin to apply at substantially the same time pulse width modulation and amplitude modulation to the output current provided to the one or more light sources. Additionally or alternatively, the dimming driver circuitry may in some examples include at least one linear dimming control pin connected to at least one capacitor and/or resistor configured to fine-tune capacitance and/or resistance. | 06-23-2011 |
| 20110148319 | POWER UNIT AND LIGHTING APPARATUS - When a voltage V detected by a voltage detecting section is lower than a first threshold value Vth | 06-23-2011 |
| 20110156610 | PHASE CONTROL WITH ADAPTIVE PARAMETERS - A method for determining a limit of a phase control power range includes applying a first gate pulse to a switch at a first firing angle near the limit of the power range, sensing the conductive state of the switch after the first gate pulse, and determining the limit of the power range in response to the conductive state of the switch. If the switch remains conductive after the first gate pulse, the first firing angle may be used as the limit of the power range. If the switch does not remain conductive after the first gate pulse, the limit may be determined by repeatedly incrementing the firing angle, applying a gate pulse to the switch at the incremented firing angle, and sensing the conductive state of the switch after each gate pulse until the switch is conductive after a gate pulse. | 06-30-2011 |
| 20110156611 | DRIVING DEVICE OF LIGHT EMITTING UNIT - A driving device of a light emitting unit is provided. The driving device includes a driving circuit, a switch, a capacitor, and a compensation circuit. The driving circuit has a control terminal and a driving terminal connected to the light emitting unit. The driving circuit determines a driving current according to the voltage on the control terminal. The switch has a first end for receiving a data voltage, a second end connected to the light emitting unit, and a control end for receiving a scan voltage. The capacitor has a first end connected to the control terminal of the driving circuit and a second end connected to the second end of the switch. The compensation circuit has an output terminal connected to the first end of the capacitor. The compensation circuit supplies a reset voltage to the first end of the capacitor when the switch is turned on. | 06-30-2011 |
| 20110156612 | LED DRIVE CIRCUIT, PHASE CONTROL DIMMER, LED ILLUMINATION FIXTURE, LED ILLUMINATION DEVICE, AND LED ILLUMINATION SYSTEM - An LED drive circuit for driving an LED by input of an alternating voltage, the LED drive circuit being capable of connecting to a phase control dimmer. The LED drive circuit is provided with a current extractor for continuing to allow current to flow into the phase control dimmer so that a phase control element inside the phase control dimmer does not switch off before the alternating voltage reaches 0 V after the phase control element inside the phase control dimmer switches on and the LED emits light. | 06-30-2011 |
| 20110163686 | LIGHTING DEVICE - A lighting device comprising a hermetically sealed vessel having a light transmissive property, a gas filled in the hermetically sealed vessel and configured to emit a first light having wavelength when excited by electron, the wavelength of the first light has a range from vacuum ultraviolet to visual light, an electron source disposed within the hermetically sealed vessel, the electron source configured to emit the electron when an operation voltage is applied, anode electrode disposed within the hermetically sealed vessel, a phosphor configured to emit the second light when excited by the first light. The electron source is configured to emit the electron having energy distribution when the electron source receives the emission voltage. The energy distribution having a peak energy. The peak energy is higher than an excitation energy of the gas. The peak energy is lower than an ionization energy of the gas. | 07-07-2011 |
| 20110163687 | LIGHT-EMITTING DEVICE AND DRIVING METHOD THEREOF - According to one embodiment, a light-emitting device includes an emitting layer, first and second electrodes, a voltage-supply circuit, an ammeter and a controller. The emitting layer includes a solution containing an emitting material and a solvent. The first and second electrodes are in contact with the solution. The voltage-supply circuit applies an operating voltage between the first and second electrodes. The ammeter measures the amount of electric current flowing between the first and second electrodes. The controller controls the operation of the voltage-supply circuit such that the polarity of the operating voltage reverses and determining a timing of reversing the polarity based on the output of the ammeter. | 07-07-2011 |
| 20110169418 | LED DRIVE CIRCUIT WITH A PROGRAMMABLE INPUT FOR LED LIGHTING - A LED drive circuit according to the present invention comprises a controller and a programmable signal. The controller generates a switching signal coupled to switch a magnetic device for generating an output current to drive a plurality of LEDs. The programmable signal is coupled to regulate a current-control signal of the controller. The switching signal is modulated in response to the current-control signal for regulating the output current, and the level of the output current is correlated to the current-control signal. | 07-14-2011 |
| 20110175540 | OVERLOAD PROTECTION DEVICE FOR LED LUMINARY - An overload protection device for LED luminary includes a light bulb connected in front of a circuit that has a single or a group of LED luminaries thereon. The light bulb forms an energy consumption device. The energy consumption device can change the consumption value automatically to protect the LED luminary. | 07-21-2011 |
| 20110175541 | ARC DISCHARGE DETECTING CIRCUIT, LIGHT SOURCE DRIVING APPARATUS HAVING THE SAME AND METHOD OF DRIVING A LIGHT SOURCE USING THE SAME - An arc discharge detecting circuit includes; a voltage dividing part which divides a driving voltage provided to a light source, a detecting part which includes a loop-shaped wiring spaced apart from the voltage dividing part and which detects a current corresponding to an arc discharge flowing through the voltage dividing part using a coupling capacitance generated between the loop-shaped wiring of the detecting part and a wiring of the voltage dividing part, and an output part connected to the detecting part to output a detection voltage corresponding to the arc discharge. Accordingly, the arc discharge detecting circuit may improve a sensitivity of detecting an arc discharge as a current source type using the coupling capacitors, a design may be simplified, and manufacturing costs may be decreased. | 07-21-2011 |
| 20110175542 | Dual Control Luminaire - Disclosed is a luminaire including a luminaire housing, a lamp or ballast disposed at least partially within the luminaire housing, a first control input disposed at least partially internal to or integral with the luminaire housing, a second control input disposed external to the luminaire housing, and connection components configured to associate the lamp or ballast with the first control input and the second control input. | 07-21-2011 |
| 20110175543 | DRIVER FOR PROVIDING VARIABLE POWER TO A LED ARRAY - A driver for providing variable power to a LED array, which can be coupled through a dimmer to an AC power supply, comprises a filtering and rectifying unit, a switching power unit, and a control unit. The filtering and rectifying unit is adapted to attenuate EMI and convert an AC power from the AC power supply into a DC power output. The switching power unit is adapted to receive the DC power output and provide an output current to the LED array. The control unit is adapted to determine the output current in response to a comparison between a dim reference signal representing phase-modulating information of the AC power and a feedback signal representing an average value of the output current. The LED array can thus be controlled by a dimmer at the primary side so as to adjust its light output, and can further be utilized in currently existing lighting infrastructures. | 07-21-2011 |
| 20110181198 | LED LIGHTING DEVICE AND ILLUMINATION APPARATUS - According to one embodiment, an LED lighting device includes a DC source, a non-insulated step-down chopper and a light emitting diode. The non-insulated step-down chopper includes: a first circuit in which a switching element, a current detecting impedance element and an inductor are connected in series to each other; a second circuit in which the inductor and a freewheel diode are connected in series to each other; and a control portion for controlling the switching element. A power portion including the switching element and the control portion are constituted by a single package IC, and the current detecting impedance element and inductor are attached to the outside of the IC. | 07-28-2011 |
| 20110181199 | CONTROLLERS, SYSTEMS AND METHODS FOR CONTROLLING DIMMING OF LIGHT SOURCES - A controller for controlling dimming of an LED light source includes a control terminal and dimming control circuitry coupled to the control terminal. The control terminal provides a driving signal to control a control switch coupled to the LED light source, thereby controlling the dimming of the LED light source. The dimming control circuitry generates the driving signal according to a set of operations of a power switch that transfers an AC signal. The dimming control circuitry further adjusts the driving signal by counting multiple waves of the AC signal to control the dimming of the LED light source. | 07-28-2011 |
| 20110187280 | PRIMARY DRIVE SYNCHRONOUS HIGH-SPEED SWITCHING RECTIFYING CIRCUIT FOR LLC HALF-BRIDGE POWER CONVERTER FOR DRIVING LED - Disclosed herein is a secondary rectifier for an LLC half-bridge power converter for driving an LED, which provides a power converter with efficiency and stability higher than a conventional power converter using a rectifying diode. The LLC half-bridge power converter does not employ a fast recovery diode or a Schottky diode for secondary rectification and uses FETs as rectifying elements to achieve high efficiency, high stability and low cost and small volume. | 08-04-2011 |
| 20110187281 | METHOD FOR OPERATING AC LIGHT-EMITTING DIODE - A method for operating an AC LED is disclosed. The method operates with an assumption that a linear relationship exists between the voltage and current of the AC LED operating at an active region. Hence, a first driving voltage and a second driving voltage are applied to the AC LED for respectively measuring a first driving current and a second driving current, and an interpolation is used for obtaining a third driving voltage. The third driving voltage is the predicted driving voltage for the AC LED. The method is capable of determining the actual driving voltage precisely and rapidly before the follow-up tests for other AC LEDs may proceed. | 08-04-2011 |
| 20110187282 | Smart Load Control Device Having a Rotary Actuator - A load control device for controlling the amount of power delivered from an AC power source to an electrical load comprises a rotary actuator, such as a rotary knob or a rotary wheel. The load control device increases and decreases the amount of power delivered to the electrical load in response to rotations of the rotary knob in first and second directions, respectively. The load control device accelerates the rate of change of the amount of power delivered to the load in response to the angular velocity of the rotary actuator. The load control device generates a ratcheting sound when the rotary actuator is rotated in the first direction at a high-end intensity of the load control device. The load control device is operable to control the electrical load in response to both actuations of the rotary actuator and digital messages received via a communication link. | 08-04-2011 |
| 20110187283 | DIMMING INPUT SUITABLE FOR MULTIPLE DIMMING SIGNAL TYPES - A lighting circuit constituted of: a single dimming input; a pulse width modulation acceptance circuit arranged to convert a pulse width modulated dimming signal received at the single dimming input into a local dimming signal, the local dimming signal exhibiting a predetermined format; an analog voltage level acceptance circuit arranged to convert an analog voltage dimming signal received at the single dimming input into the local dimming signal exhibiting the predetermined format; and a luminaire driving circuit responsive to the local dimming signal. | 08-04-2011 |
| 20110193491 | Integrated Electronic Device for Controlling Light Emitting Diodes - A compact driver device for driving an LED lighting device is provided. The driver device includes a substrate, power capacitor that provides LED driving current to drive the LED lighting device, and a power resistor. Advantageously, the power capacitor and the power resistor are attached to the substrate and are solderlessly connected to each other to provide a very compact driver device. | 08-11-2011 |
| 20110199015 | DIAMOND COMPOSITE AS ILLUMINATION SOURCE - The present disclosure provides a new diamond composite comprising a diamond material doped with a preselected transition metal or metal compounds as an illumination source with broadband white light luminosity, high efficiency, and enhanced life span. The present disclosure also provides a new method of diffusing dopants (such as transition metal or metal compounds) into an intended material (such as a diamond material). | 08-18-2011 |
| 20110199016 | DYNAMIC APPLICATION OF CUT-OUT PULSES IN ALTERNATING CURRENT POWER - A controller device and corresponding method for modifying an AC input power to provide a reduced power AC output power to a load when coupled to the controller device. The AC output power has a series of cut-out pulses in half cycles of the AC output power waveform. The device includes a switching system having a plurality of switching elements for positioning the series of cut-out pulses in the half cycles of a waveform of the AC input power to result in said reduced power AC output power; and a switch control system for coordinating opening and closing of the plurality of switching elements during positioning of the series of cut-out pulses. The switch control system includes a synchronization system for synchronizing the switching system with timing of said half cycles of the AC input power waveform; wherein the series of cut-out pulses includes at least two cut-out pulses having different durations and different positioning in said half cycles. | 08-18-2011 |
| 20110199017 | CIRCUIT AND METHOD FOR DRIVING A LUMINOUS MEANS - A circuit for driving a luminous means is provided. The circuit may include a driver circuit having an input and an output, wherein the output of the driver circuit is connected to the luminous means; and a detector circuit, on the basis of which, depending on an input signal of the driver circuit, a capacitor can be connected to the output of the driver circuit or to the input of the driver circuit. | 08-18-2011 |
| 20110204813 | FLUORESCENT-BASED ELECTROLUMINESCENT LIGHTING - An electroluminescent tube compatible with a conventional fluorescent lighting system is generally described in the present disclosure. One example electroluminescent tube may include a rectifying circuit, a driving circuit, and an electroluminescent device. The driving circuit is configured to drive the electroluminescent device upon receiving a power signal. The rectifying circuit is configured to bypass a starter route and also direct the power signal to the driving circuit through a power input route. | 08-25-2011 |
| 20110204814 | INORGANIC ELECTROLUMINESCENCE DEVICE AND METHOD OF MANUFACTURING THE SAME - An inorganic electroluminescence device includes a substrate, a first electrode layer including a plurality of segment electrodes disposed on the substrate and separated from each other, a phosphor layer on the first electrode layer, a dielectric layer on the phosphor layer, and a second electrode layer on the dielectric layer. A voltage is applied to each of the plurality of segment electrodes so that the inorganic electroluminescence device can be turned on or turned off. | 08-25-2011 |
| 20110204815 | PREHEATING CONTROL DEVICE, LAMP DRIVING DEVICE INCLUDING THE SAME, AND PREHEATING CONTROL METHOD - The present invention relates to a preheating control device controlling lamp preheating, a lamp driving device including the same, and a preheating control method thereof. | 08-25-2011 |
| 20110215732 | BUILT-IN LAMP WIRELESS DIMMER DEVICE - The present invention relates to a built-in lamp wireless dimmer device, the wireless dimmer device being built into a light-emitting component, and a remote control and a switching element are used to implement a dimming function. The wireless dimmer device is primarily structured from a decoder unit and a RF (radio frequency) wireless receiver unit. Accordingly, the remote control is used to transmit a RF signal to the dimmer device to implement wireless dimming and stepless light source transformation of the light-emitting component. | 09-08-2011 |
| 20110215733 | ROBUST 1D GESTURE LIGHT CONTROL ALGORITHM - A lighting system comprising a lamp arranged to transform electricity into a light beam having different properties; a light control means arranged to adjust said light beam properties; an ultrasonic transmitter arranged to transmit ultrasonic signals; an ultrasonic receiver arranged to receive reflected ultrasonic signals; and a processing means arranged to derive a time-of-flight signal representing the time differences between said transmitted and received ultrasonic signals and to send control signals to said light control means in dependence of said time-of-flight signal. The processing means performs a reference calibration step: the time-of-flight is repeatedly measured a multitude of times, and calculates the average of said measured time-of-flight values and stores the average in memory means as a reference time-of-flight value if said deviation of the majority of the measured time-of-flight values of said multitude of measurements is lower than a predetermined threshold. | 09-08-2011 |
| 20110227502 | CIRCUIT AND METHOD FOR GENERATING PWM SIGNAL FOR DC-DC CONVERTER USING DIMMING SIGNAL AND LED DRIVING CIRCUIT FOR BACKLIGHT HAVING THE SAME - A pulse width modulation (PWM) signal generating circuit that generates a PWM signal for a DC-DC converter using a dimming signal is provided. The PWM signal generating circuit includes a normal PWM signal generator configured to generate a normal PWM signal based on a clock signal provided to the DC-DC converter, and a compensation PWM signal generator configured to generate a compensation PWM signal based on the clock signal and the dimming signal. | 09-22-2011 |
| 20110234116 | METHOD FOR PROGRAMMING ELECTRONIC OPERATING DEVICES FOR DISCHARGE LAMPS AND ELECTRONIC OPERATING DEVICE FOR DISCHARGE LAMPS - A method for programming an electronic operating device is provided. The method may include programming the operating device via a slow on/off switching pattern of its supply voltage, the operating device being configured to automatically dim the connected light or lights on a time-control basis after programming, and choosing the time base of the on/off switching pattern used for programming such that a person can carry out the programming using a clock and an on/off switch for the supply voltage. | 09-29-2011 |
| 20110234117 | Solid State Device Controller - A solid state device controller is provided that includes a first electrical connector configured to be in electrical communication with an alternating current (AC) electrical power source and a second electrical connector in electrical communication with the first electrical connector, wherein the second electrical connector is configured to be in electrical communication with a direct current (DC) electrically powered device. The controller further includes circuitry in communication between the first electrical connector and the second electrical connector, wherein the circuitry is configured to convert the supplied AC electrical power to DC electrical power, and a housing configured to enclose at least a portion of the first electrical connector, the second electrical connector, and the circuitry, wherein the housing is further configured to be removably received by a service panel assembly. | 09-29-2011 |
| 20110234118 | Complex Crystal Phosphor, Light Emitting Device, Surface Light Source Apparatus, Display Apparatus, and Lighting Device - A complex crystal phosphor is an inorganic composition containing at least an M element, an Al element, silicon, oxygen, and nitrogen. The inorganic composition has particles having at least two types of crystal phase, and the at least two types of crystal phase include a first crystal phase which is the same as a M | 09-29-2011 |
| 20110234119 | INTENSITY CHANGING WITH REDUCED FLICKER FOR DIGITALLY-CONTROLLED LIGHTING - A system for changing a light source intensity comprises a processor and a memory. The processor is configured to receive a command intensity for a light source, wherein the light source has a current intensity, and wherein an intensity of the light source is ramped toward the command intensity from the current intensity automatically. The processor is further configured to determine a non-linear curve for the intensity of the light source, wherein at least a portion of the non-linear curve includes a beginning portion slope that is steeper at a beginning of the portion than an end portion slope at an end of the portion and to cause a change of a light source intensity by ramping over a time interval, wherein the light source intensity targets conforming to the non-linear curve for the intensity of the light source. The memory coupled to the processor and configured to provide instructions to the processor. | 09-29-2011 |
| 20110241562 | ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE - An OLED display device includes a substrate; an organic light emitting element having a first electrode formed on the substrate, an organic emission layer disposed on the first electrode, and a second electrode disposed on the organic emission layer; a common power bus line disposed between the organic light emitting element and an edge of the substrate on the substrate and electrically connected with the first electrode; a driving power bus line neighboring the common power bus line on the substrate, disposed between the organic light emitting element and the edge of the substrate, and electrically connected with the second electrode extended from a portion corresponding to the organic emission layer; and a connection wire made of the same material as the second electrode on the common power bus line, separated from the second electrode, and electrically connected with the common power bus line. | 10-06-2011 |
| 20110241563 | ORGANIC LIGHT EMITTING DIODE DISPLAY - An OLED display is disclosed. The OLED display includes two substrates with organic light emitting elements therebetween. The organic light emitting elements include a second electrode in common among the organic light emitting elements, and one of the substrates includes an auxiliary electrode to connect to the common second electrode to reduce resistance in the electrical path from a power source to the second electrode. | 10-06-2011 |
| 20110241564 | SURFACE EMITTING LASER, SURFACE EMITTING LASER ARRAY, LIGHT SOURCE AND OPTICAL MODULE - A surface emitting laser is formed of a composition in which bandgap energy of layers from immediately above a current confinement layer to a second conductivity type contact layer is reduced towards the second conductivity type contact layer in a stacking direction, and a composition in which bandgap energy of layers from immediately below the current confinement layer to a first conductivity type contact layer is reduced towards the first conductivity type contact layer in a stacking direction while bypassing a quantum well layer or a quantum dot of an active layer, and includes a second conductivity type cladding layer including a material for reducing the mobility of carriers. | 10-06-2011 |
| 20110241565 | LIGHT SOURCE APPARATUS, PROJECTOR, AND LIGHT SOURCE APPARATUS DRIVE METHOD - A light source apparatus includes an arc tube having a first electrode and a second electrode that carry out an emission of light due to a discharge between them, and a drive that, when supplying energy in an alternating current to the first electrode and the second electrode, carries out a steady operation supplying a steady energy to the first electrode and the second electrode, and an initial operation making a cumulative energy supplied to at least one electrode, of the first electrode and the second electrode, in an anode period of the relevant electrode, prior to the steady period, greater than during the steady period. | 10-06-2011 |
| 20110248643 | Wireless Remote Control Lighting Unit and Wireless Remote Control Lighting System and Control Method Thereof - The present invention discloses a wireless remote control lighting unit and a wireless remote control lighting system and a control method thereof. The wireless remote control lighting unit comprises a power on detection circuit, which detects and counts the power on times of a power source during a predetermined period. When the power on times reach a threshold number, the wireless remote control lighting unit enters an address setting mode to set its address. | 10-13-2011 |
| 20110248644 | METHOD OF CONFIGURING AN LED DRIVER, LED DRIVER, LED ASSEMBLY AND METHOD OF CONTROLLING AN LED ASSEMBLY - A method of configuring an LED driver is disclosed. The LED driver being arranged to provide a supply current to an LED fixture comprising a plurality of LEDs. The method comprises: identifying the LED fixture (LF)1 sending via a communication network (NTW) a configuration request to a configuration database (DB), receiving configuration data from the configuration database; and configuring the LED driver (LPS) according to the configuration data. | 10-13-2011 |
| 20110254461 | Power adaptors - A power adaptor ( | 10-20-2011 |
| 20110254462 | CONTROL CIRCUIT AND METHOD FOR LED DRIVERS - A control circuit and method for a LED driver accurately control the output current of the LED driver by adjusting a reference voltage or a feedback voltage according to the input voltage of the LED driver such that the output current decreases with the decrease of the input voltage. Therefore, it enhances the efficiency of the LED driver and maximizes the battery use time of a battery powered system. | 10-20-2011 |
| 20110254463 | METHOD FOR OPERATING A LAMP AND ELECTRONIC BALLAST - A method for operating a lamp may include: Connecting a device to a pair of input connections of an electronic ballast and by this means determining a respective dimming duration for at least one predetermined situation; and Activating the lamp by the electronic ballast in at least one predetermined situation such that the lamp emits light with a reduced intensity compared with the normal intensity at which the lamp otherwise emits light over a period of a dimming duration determined for this situation. | 10-20-2011 |
| 20110254464 | PULSE WIDTH MODULATION (PWM) CLOSED LOOP LED CURRENT DRIVER IN AN EMBEDDED SYSTEM - Methods and systems for providing stable and accurate low noise DC reference voltage are described. In the described embodiments, a feedback controlled DC reference voltage supply provides a stable and well controlled sense current. The sense current is in turn used to produce a stable and well controlled light output from a light emitting diode (LED). | 10-20-2011 |
| 20110260638 | REFLECTOR-TYPE LAMP WITH INTEGRATED HEAT DISTRIBUTION AND EMI SHIELDING - Reflector-type lamps and housings with integrated heat distribution and EMI shielding are disclosed. A reflector-type lamp includes a lamp housing having a base portion, a reflector portion, and an integrated heat distribution structure. A light source may be located in a reflector housing region or cavity defined by the reflector portion and integrated electronics may be located in a base housing region or cavity defined by the base portion. In general, the heat distribution structure distributes heat from hot spots in the lamp to exterior locations along the base portion and/or reflector portion. The heat distribution structure may also provide electromagnetic interference (EMI) shielding when EMI is generated within the lamp, for example, in the integrated electronics. | 10-27-2011 |
| 20110260639 | POWER SUPPLY DEVICE HAVING CURRENT CONTROL CIRCUIT CAPABLE OF CORRECTING POWER FACTOR - Disclosed herein is a power supply device capable of correcting power factor. The power supply device includes a rectification circuit, a first constant current circuit, a capacitor, and a second constant current circuit. The rectification circuit rectifies input Alternating Current (AC) voltage. The first constant current circuit is connected in series to a load. The capacitor is connected in parallel to the first constant current circuit and the load that are connected in series to each other. The second constant current circuit is disposed between the output of the rectification circuit and the capacitor. | 10-27-2011 |
| 20110260640 | POWER SUPPLY CIRCUIT FOR LIGHT SOURCES, SUCH AS LIGHTING LED SYSTEMS - In various embodiments, a power supply circuit for light sources is provided. The power supply circuit may include a ground line and a current feed line towards said light source, wherein said circuit includes an output inductor interposed in said current feed line, the circuit including an electronic switch interposed in said feed line switchable between an on condition, wherein said electronic switch is configured to ensure continuity of said feed line, and an off condition, wherein said electronic switch is configured to interrupt said current feed line, the circuit further including a rectifier set interposed between said output inductor and said electronic switch to rectify the voltage across said output inductor, the voltage produced by said rectifier set constituting a drive voltage to maintain said electronic switch in said on condition. | 10-27-2011 |
| 20110260641 | CURRENT REGULATOR APPARATUS AND METHODS - An apparatus according to the present invention provides regulated pulsed current to an LED from a voltage source such as a rectified AC voltage. The present inventions provide methods for delivering regulated pulsed current to an LED from the voltage source. | 10-27-2011 |
| 20110273109 | Organic light emitting display and method of driving the same - An organic light emitting display includes a pixel unit including pixels coupled to scan lines and data lines, a DC-DC converter for transmitting a voltage level of at least one power source of a first power source and a second power source to provide the power source to the pixel unit, and a voltage controller for controlling a voltage level transition time of the DC-DC converter. A method of driving such an organic light emitting display may include converting an input voltage into a predetermined first voltage level of a driving power source, adjusting the first level voltage of the driving power source to a second level voltage, wherein the second level voltage reaches a steady state, and applying black data to a pixel unit during a time period when the first level voltage is being adjusted to the second level voltage. | 11-10-2011 |
| 20110279054 | Power Light Emitting Diode and Method with Current Density Operation - A light emitting diode device emitting at a wavelength of 390-415 nm has a bulk gallium and nitrogen containing substrate with an active region. The device has a current density of greater than about 175 Amps/cm | 11-17-2011 |
| 20110279055 | CONTROL APPARATUS WITH CALIBRATION FUNCTIONALITY AND LIGHTING APPARATUS INCORPORATING CONTROL APPARATUS - Control apparatus for controlling an aspect of an apparatus are disclosed. In certain embodiments, the control apparatus comprises a dimmer that includes a variable impedance. In certain embodiments of the invention, the dimmer may be a TRIAC dimmer having a voltage at a gate electrode of the TRIAC that is always below a trigger voltage for the TRIAC such that the TRIAC never turns on and the remaining components within the TRIAC dimmer can be used as discreet components in a larger circuit. In the control apparatus, the dimmer may be coupled to a signal generation circuit that may generate an output signal whose frequency (period) is dictated at least in part by an impedance of the variable impedance. The output signal may be used to control an aspect of an apparatus such as the intensity, color or color temperature for a lighting apparatus. | 11-17-2011 |
| 20110279056 | LIGHT EMITTING DIODE LIGHTING MODULE FOR SURGICAL OR DENTAL HANDPIECE - Lighting module ( | 11-17-2011 |
| 20110285309 | SOLID STATE LIGHTING DEVICES UTILIZING MEMRISTORS - LED chip circuits, solid state light engines and SSL luminaires are disclosed that utilize memristors to vary LED chip emission. In different embodiments the resistance of said memristor can be varied to vary the drive signal applied to one or more LED chips, thereby varying the LED chip emission intensity. The present invention can be used in much different arrangement to vary LED chip emission, such as changing the drive signals to LED chips that experience changes in emission intensity at different temperatures or that experience emission intensity depreciation over time. | 11-24-2011 |
| 20110285310 | LIGHTING CONTROL FAILSAFE CIRCUIT - A system may include a switch arranged to control a lighting load, a processor arranged to control the switch, and a failsafe circuit arranged to monitor the processor and actuate the switch if the processor fails. The failsafe circuit may have a time constant, and may be arranged to actuate the switch if the monitor signal does not include a pulse during a period of time equal to the time constant. | 11-24-2011 |
| 20110285311 | Control Circuit and Light Emitting Diode Driver and Method Using Thereof - A control circuit applied in a light emitting diode (LED) driver includes a counter, a sample circuit, and a signal source. The counter counts a parameter indicating the duty cycle width of a dimming signal in response to a front edge of the dimming signal. The sample circuit obtains a sample signal by means of sampling the most significant bit (MSB) of the parameter in response to the rear edge of the dimming signal. The duty cycle width is determined to be greater than a threshold value and smaller than that when the sample signal corresponds with a terminal value and an initial value, respectively. The signal source provides a reference voltage corresponding to first level and that corresponding to second level, higher than the first level, to drive a boost converter of the LED driver in response to the terminal value and the initial value, respectively. | 11-24-2011 |
| 20110285312 | Integrated Three Dimensional Inductor and Method of Manufacturing Same - An integrated 3-dimensional inductor device is provided. The inductor device includes a substrate having an electrical trace and a 3-dimensional inductor attached to the substrate. The inductor includes a magnetic core and a coil whose windings are formed from the electrical traces of the substrate and conductive material in the interconnect vias. | 11-24-2011 |
| 20110291584 | Pulse Modulation Devices and Methods - An embodiment method of generating an output pulse stream comprises first pulse modulating a first multi-bit input term to generate a first one-bit pulse stream, using a bitwise logic AND to combine the first one-bit pulse stream and a second multi-bit term, thereby generating a multi-bit AND output, and second pulse modulating the multi-bit AND output to generate a one-bit output pulse stream representing a product of the first and second multi-bit input terms. | 12-01-2011 |
| 20110291585 | STEPPED DIMMING DEVICE FOR LED LAMP - The present invention relates to a novel dimming device for a LED lamp capable of effecting a stepped dimming of the LED lamp by detecting a momentary variation in on/off states of the power switch, enabling the LED lamp to vary to work in a plurality of working states in a cyclic manner according to a predetermined program. The dimming device the present invention overcomes the technical problems of using a regular power switch to effect dimming and allows the use of the regular power switch to effect the stepped dimming of LED lamp. The present invention may also use an external DC signal source to effect the stepped dimming of LED lamp. According to the present invention, a user may adjust the brightness of the LED lamp when needed, which not only facilitates the daily life of the user but also effectively save the energy. | 12-01-2011 |
| 20110291586 | POWER SOURCE CONTROL DEVICE OF ILLUMINATOR AND LIGHTING SYSTEM - A power source control device for controlling an illuminance of an illuminator by outputting a current for driving the illuminator and by controlling the current, including: a receiver for receiving a wireless signal having a predetermined frequency; a storage section for storing a setting table holding a first code indicating a predetermined device identification code; a control signal generating circuit for comparing a second code included in the wireless signal with the first code to output a control signal when the second code agrees with the first code; and a current outputting circuit for generating and outputting a current according to the control signal generating circuit, wherein the power source control device controls the illuminance of the illuminator according to the wireless signal from a desired wireless signal transmitting device in response to a change of the first coded held in the setting table. | 12-01-2011 |
| 20110291587 | Multi-Function Duty Cycle Modifier - A system and method modify phase delays of a periodic, phase modulated mains voltage to generate at least two independent items of information during each cycle of the periodic input signal. The independent items of information can be generated by, for example, independently modifying leading edge and trailing edge phase delays of each half cycle phase modulated mains voltage. Modifying phase delays for the leading and trailing edges of each half cycle of the phase modulated mains voltage can generate up to four independent items of data. The items of data can be converted into independent control signals to, for example, control drive currents to respective output devices such as light sources to provide multiple items of information per cycle. | 12-01-2011 |
| 20110298390 | POWER CONVERSION CONTROLLER HAVING AN ADAPTIVE PEAK CURRENT REFERENCE - A power conversion controller having an adaptive peak current reference, including: a peak current reference generation means, used for generating a peak current reference signal by performing an adaptive arithmetic operation on an output voltage feedback signal and a power source signal; and a comparator means, used for generating a gating signal by performing a voltage comparison operation on the peak current reference signal and a current sensing signal. | 12-08-2011 |
| 20110298391 | ELECTROLUMINESCENCE DISPLAY DEVICE HAVING ELECTRODE POWER SUPPLY LINE - An electroluminescent display device may include a display area formed on one surface of a substrate. It may further include a first electrode layer, a second electrode layer, and an electroluminescent emission layer between the first and second electrode layers. It may also include an electrode power supply line that supplies electrode power to the display area. The electrode power supply line can be located at least partially on an outer periphery of the display area, and may directly contact the second electrode layer. An electrical component may be arranged under the electrode power supply line, and may have one or more conductive layers. | 12-08-2011 |
| 20110309768 | TEXTILE WITH PATTERN-LIGHTING EFFECT - A textile includes a plurality of opaque filaments, a plurality of transparent and light-guiding filaments and a lighting module. The opaque filaments are spaced from each other in a first direction, and the transparent and light-guiding filaments are spaced from each other in a second direction. The opaque filaments and the transparent and light-guiding filaments are woven as a textile. The transparent and light-guiding filaments selectively have a light-dispersion dot formed by a laser-engraving method and the light-dispersion dots are constructed as a predetermined pattern portion. The lighting module is disposed on ends of the transparent and light-guiding filaments. The light-dispersion dots have uniform structure so as to form a uniform lighted area. | 12-22-2011 |
| 20110316441 | Bidirectional phase cut modulation over AC power conductors - A system includes a controller and line units. The controller receives AC power from a power source and supplies an AC power signal via two conductors to the units. In one example, the controller is a dimmer switch and the units are intelligent LED lamps. The controller uses phase cut modulation to communicate information (for example, lighting control commands) to the units. The units receive the AC power signal, demodulate and recover the phase cut modulated information, and optionally communicate information back to the controller using load modulation. An addressed unit changes loading on the two conductors from phase cut time to phase cut time, thereby modulating information onto the AC power signal. The controller monitors the AC power signal, and demodulates and recovers the information. The overall bidirectional communication is referred to as bidirectional phase cut modulation over AC power conductors. Units can be controlled individually or in groups. | 12-29-2011 |
| 20110316442 | LED LIGHTING DEVICE - The LED lighting device includes a lighting circuit unit, a current detecting unit, a voltage detecting unit, and a control unit. The lighting circuit unit is adapted in use to be connected to a lamp socket to be connected to a LED lamp, and is configured to provide an output voltage in the form of a DC voltage to the lamp socket in a manner to turn on the LED lamp. The current detecting unit is configured to detect an output current which is caused by the output voltage and is supplied from said lighting circuit unit to said lamp socket. The voltage detecting unit is configured to detect the output voltage of said lighting circuit unit. The control unit configured to control the lighting circuit unit. The control unit is configured to perform constant-current control of control the lighting circuit unit in a manner to regulate the output voltage such that the output current is identical to a target value while keeping the output voltage not higher than a maximum-load voltage, when the output current detected by the current detecting unit is not less than a predetermined threshold value, and is configured to perform no-load control of controlling the lighting circuit unit in a manner to regulate the output voltage such that the output voltage is kept identical to a no-load voltage higher than the maximum-load voltage, when the output current detected by the current detecting unit is less than the predetermined threshold value. | 12-29-2011 |
| 20120001566 | POWER SUPPLY FOR LIGHT EMITTING DIODE ROADWAY LIGHTING FIXTURE - A high efficiency light emitting diode power supply for roadway lighting fixtures is provided. The power supply enables conditioning and monitoring of input power and monitors LEDs current to ensures consistent performance of the LED by changing a power correction factor. The LED output can also be adjusted based upon age or external input parameters and by modifying the power correction factor value. In addition, the LED output can be dimmed, turned down in output to a lower level at any time of night for a prescribed duration in order to further save energy. This dimming function uses a programming scheme that keeps track of the “seasons” (summer, fall, winter and spring) so that time of night is tracked accurately all year long. | 01-05-2012 |
| 20120001567 | Lighting Control System - Intelligent illumination device are disclosed that use components in an LED light to perform one or more of a wide variety of desirable lighting functions for very low cost. The LEDs that produce light can be periodically turned off momentarily, for example, for a duration that the human eye cannot perceive, in order for the light to receive commands optically. The optically transmitted commands can be sent to the light, for example, using a remove control device. The illumination device can use the LEDs that are currently off to receive the data and then configure the light accordingly, or to measure light. Such light can be ambient light for a photosensor function, or light from other LEDs in the illumination device to adjust the color mix. | 01-05-2012 |
| 20120007520 | DRIVER FOR DRIVING LIGHT EMITTING DEVICE - A driver for driving a light emitting device includes an output stage and a driving stage. The output stage is for outputting a driving current to the light emitting device according to a driving signal, wherein the light emitting device is coupled between the output stage and a second reference voltage different from the first reference voltage. The driving stage is for generating the driving signal to the output stage, wherein one of the third reference voltage and the fourth reference voltage is within a range between the first reference voltage and the second reference voltage, and the other of the third reference voltage and the fourth reference voltage is outside the range between the first reference voltage and the second reference voltage. | 01-12-2012 |
| 20120019160 | LIGHT EMITTING DIODE DRIVING METHOD AND DRIVING CIRCUIT - A LED driving method includes steps of: providing a first pulse width modulation (PWM) signal for determining a brightness of a LED; obtaining a duty cycle of the first PWM signal; and selectively enabling the LED to work with a PWM dimming mode or a direct current (DC) dimming mode according to a relative relationship between a magnitude of the obtained duty cycle and a preset threshold value. Since the LED is performed with a two stage brightness control by use of mixed dimming mode, the driving efficiency of the LED can be improved. | 01-26-2012 |
| 20120019161 | LIGHT-EMITTING ELECTROCHEMICAL CELL AND SYSTEM, USE THEREOF AND METHOD FOR THEIR OPERATION - A light-emitting device comprises a first electrode, a second electrode, and a light-emitting active material contacting and separating the first and second electrodes. The device comprises a combination of a conjugated polymer and an electrolyte, said electrolyte comprising ions, allowing for electrochemical doping of the conjugated polymer. In the device, a ratio between the ions and the conjugated polymer is selected to allow for the formation of:
| 01-26-2012 |
| 20120019162 | MODULAR WIRELESS LIGHTING CONTROL SYSTEM USING A COMMON BALLAST CONTROL INTERFACE - Disclosed is a modular lighting system that incorporates wireless technology and a standard interface. The lighting system may be installed in new buildings or retrofitted into existing buildings in such a way that provides many lighting configurations and programmability options while minimizing the amount of new wiring. The system includes a transceiver that controls one or more lamps using a dimming ballast or a relay and a low cost ballast. The dimming ballast, and the relay (if used) provide low voltage power to the transceiver over a cable having a standard interface, such as an RJ11 telephone jack. The transceiver provides on/off switching control and dimmer control, through the same cable, to the relay or dimming ballast. The transceiver can be located in the same room as the lamps it controls, or remotely located. A central computer or controller can control multiple transceivers over a wireless link. | 01-26-2012 |
| 20120032608 | LIGHTING SYSTEM COMMUNICATIONS APPARATUS AND METHOD - A communications apparatus and techniques are presented for communicating with ballasts or drivers through lighting system power connections in which the power connections are energized with low levels of power to power communications components in the ballast/drivers while the light sources are off and low frequency AC communications signals are transmitted through the power connections. | 02-09-2012 |
| 20120038289 | LED LAMP AND DRIVING CIRCUIT FOR THE SAME - An LED lamp driving circuit includes: a thermistor having one terminal through which an external voltage is applied; an AC-DC conversion unit connected to the other terminal of the thermistor and converting an AC voltage applied to the other terminal of the thermistor into a DC voltage; and a DC-DC conversion unit converting the DC voltage from the AC-DC conversion unit into a DC voltage required to drive the LED lamp. | 02-16-2012 |
| 20120043908 | NOVEL LED DRIVER CONTROLLER - A novel LED driver controller, including: an auto-gain control unit, having an input end coupled to an input voltage signal which is derived from a line voltage, and an output end for providing a normalized signal; a comparator, used to perform voltage comparison on the normalized signal and a current sensing signal to generate a turn-off signal, wherein the turn-off signal will change state from inactive to active when the current sensing signal reaches the normalized signal; and a driving circuit, having a set input end, a reset input end, and an output end, the set input end being coupled to a turn-on signal, the reset input end being coupled to the turn-off signal, the output end being used for providing a gating signal. | 02-23-2012 |
| 20120056553 | CIRCUIT FOR CONNECTING A LOW CURRENT LIGHTING CIRCUIT TO A DIMMER - A circuit for connecting to a dimmer, the circuit configured to receive an input signal from the dimmer. The circuit comprises a first load and a switch. The switch is operable to automatically engage the first load at a predetermined time from a zero-crossing of the input signal and automatically disengage the first load at other times. | 03-08-2012 |
| 20120062141 | VARIABLE-IMPEDANCE LOAD FOR LED LAMPS - In various embodiments, a startup circuit for a low-voltage-lighting electronic transformer includes a low-impedance output circuit. At the beginning of an AC signal cycle, the low-impedance output circuit presents a low-impedance path to the output of the transformer, thereby causing a surge of current in the transformer and initiating oscillation therein. | 03-15-2012 |
| 20120062142 | Method of Stabilizing Work Consumption of Passive Element - While an electronic product including passive elements is connected to an AC input voltage source, corresponding decreased currents are calculated according to a constant input/output work and a voltage curve of the input voltage source. Therefore, while the electronic product is activated under voltage sources having different scales or being unstable, the calculated decreased currents are applied so as to stabilize the input work or the output work. | 03-15-2012 |
| 20120062143 | DRIVING CIRCUIT - A driving circuit for driving a diode includes at least one differential pair including a first output node and a second output node and configured to switch an output current, a current source configured to adjust the output current, a dummy load coupled to the second output node, a first termination resistor coupled between the first output node and a termination ground, and a second termination resistor coupled between the second output node and the termination ground. The output current is supplied to the diode through the first output node by at least one differential pair. | 03-15-2012 |
| 20120068619 | DEVICE FOR CONTROLLING CURRENT OF LED - Disclosed herein is a device for controlling current of an LED including a constant current generator, a current mirror, and a current amplifier, the device controlling current of an LED, comprising: a selector outputting an L signal or an H signal according to an input control signal; and a current changing unit formed by connecting at least one switching unit in parallel, the switching unit including a transistor and a switch connected to the transistor in series. The device for controlling current of an LED adjusts current supplied to the current amplifier using a SEL input without an effect of a noise, thereby making it possible to change the current of the LED without separately changing a resistor. | 03-22-2012 |
| 20120068620 | DC-DRIVEN ELECTROLUMINESCENCE DEVICE AND LIGHT EMISSION METHOD - An inorganic electroluminescence device has a structure including a phosphor layer sandwiched between a first electrode and a second electrode; and a semiconductor structure in which N-type semiconductors and a P-type semiconductor, made of inorganic semiconductor materials, are joined to form an NPN type structure. The phosphor is made of an inorganic substance. The first electrode is to be a cathode and is formed on an insulating glass substrate. The second electrode is to be an anode and is disposed opposite the first electrode. The semiconductor structure is disposed between the cathode that is the first electrode and the phosphor layer. | 03-22-2012 |
| 20120074865 | LIGHT EMITTING DIODE DRIVING DEVICE - A light emitting diode (LED) driving device is used to drive an LED module. A conductive current flows through the LED module when the LED module is driven. The LED driving device includes a driving-controlling unit and a current-regulating unit. The driving-controlling unit is driven by a controllable current. The current-regulating unit is electrically connected to the LED module and the driving-controlling unit. The current-regulating unit divides the branch of the conductive current into two branches, and controls the current flowing through one of the branches to be proportional to the controllable current. Therefore, the current-regulating unit provides a stable current to the driving-controlling unit and prevents the driving-controlling unit from an overcurrent damage. | 03-29-2012 |
| 20120074866 | LIGHTING APPARATUS AND CONTROL METHOD THEREOF - A lighting apparatus includes a lighting unit, a converting circuit, a sensing circuit, and a current control circuit. The lighting unit includes at least one light emitting diode and a switching device connected with each other in series. The converting circuit has an output end electrically connected to the lighting unit for driving it. The sensing circuit includes a sensing element capable of indirectly detecting the current flowing through the light emitting diode and outputting a feedback signal. The current control circuit receives a reference current, the feedback signal and a dimming command, and sends a dimming control signal to the lighting unit and a current control signal to the converting circuit, capable of controlling the amplitude of the current flowing through the light emitting diode. | 03-29-2012 |
| 20120081027 | Full Wave Current Sense Rectifier - A current sense rectifier circuit comprises an assembly input terminal for receiving a current input signal having an alternating current (AC) waveform. A negative half-wave circuit generates a first input signal representative of negative portions of the current input signal. A positive half-wave circuit generates a second input signal representative of positive portions of the current input signal. The negative and positive half-wave circuits each include a single diode and a resistance. A closed-loop amplifier has an inverting input terminal connected to the negative half-wave circuit, and a non-inverting input terminal connected to the positive half-wave circuit. The closed-loop amplifier inverts the first input signal and provides a DC voltage output signal via an output terminal that is a function of the inverted first input signal and the second input signal. An assembly output terminal is connected to the output terminal to receive the DC voltage output signal therefrom. | 04-05-2012 |
| 20120081028 | Integrated Light Fixture and Night Light - A light fixture assembly having a plurality of sockets to receive a plurality of electrically powered sources of illumination, and a plurality of receptacles to receive a plurality of LED lights, the assembly including a housing. The plurality of receptacles are mounted on the fixture housing and a logic board is mounted in the housing, the logic board being electrically connected to a switch, and the switch is electrically connected to a source of electrical power. Separate electrical connections extend between the logic board and the sockets, and between the logic board and a voltage reduction device. The voltage reduction device is electrically connected to the receptacle to provide a lower voltage to the LED receptacles compared to the voltage of the electric power supplied to the light bulb. The switch is operable between off and on positions; and the logic board activates and deactivates the electrical energy provided to the sockets and to the LED receptacles upon operation of the switch. | 04-05-2012 |
| 20120081029 | Average Output Current Estimation Using Primary-Side Sensing - In one embodiment, an apparatus includes a transformer comprising a primary side and a secondary side. A switch is coupled to the primary side. A control signal circuit is configured to: sample a first current on the primary side of the transformer; estimate a second current value on the secondary side of the transformer using the sampling of the first current on the primary side and a turn ratio of the transformer; and output a signal to control a turn on time for the switch. | 04-05-2012 |
| 20120081030 | LIGHTING CONTROL DEVICE - A lighting control device for controlling one or more lighting parameters of each of one or more light sources is disclosed. The lighting control device comprises at least a first user interaction element, an element appearance control unit, a light setting control unit, and a memory for saving at least a first light setting, the first light setting comprising values of the one or more lighting parameters. The light setting control unit is adapted to set the lighting parameters according to the first light setting in response to an input via the first user interaction element. The element appearance control unit is adapted to set a first appearance associated with the first user interaction element based on at least one of the lighting parameters of the first light setting. Corresponding system, use, methods and computer program product are also disclosed. | 04-05-2012 |
| 20120081031 | FIELD EQUIPMENT PHOTOELECTRIC SENSING SENSITIVITY ADJUSTMENT - Provided is a photoelectric sensing sensitivity adjusting device including: an LED for emitting light by being supplied with energy (current or voltage); a regulator for LED driving for supplying the energy to the LED; a light receiving device for receiving the light emitted from the LED; a digital potentiometer for controlling increase or decrease of the energy to be supplied to the LED; a CPU for digitally controlling, according to a control program, the increase or decrease of the energy to be supplied to the LED; and a photodetection portion for detecting an optical signal, converting the optical signal to an electrical signal, and outputting the electrical signal. | 04-05-2012 |
| 20120086355 | CIRCUIT AND METHOD FOR DRIVING A LAMP - In various embodiments, a circuit for driving a lamp, which is operated via a bridge circuit, is provided. The circuit may include an analog controller configured to drive the bridge circuit in a first operating mode; and a logic circuit configured to drive the bridge circuit in a second operating mode. | 04-12-2012 |
| 20120091911 | ARRANGEMENT AND METHOD FOR IMPROVING THE POWER FACTOR OF A LIGHTING - An arrangement and method for improving the power factor of a lighting includes a compensating device having a first pin electrically connected to a power source and a second pin electrically connected to a third joining. The power source is electrically connected to a first joining, and a fluorescent tube is electrically connected to the third joining and the first joining. The compensating device and the power source will become an open loop while the fluorescent tube is broken or removed so as to save energy. | 04-19-2012 |
| 20120098456 | Light Emitting Diode Driving Circuit - A light emitting diode driving circuit includes connected driving units, each of which is configured for driving multiple channels of light emitting diodes generating a feedback voltage for the corresponding driving unit. Each of the driving units includes a selection circuit for comparing the feedback voltage with an input voltage to output a smaller one of the feedback voltage and the input voltage to a next one of the driving units, as the input voltage for the next one of the driving units. | 04-26-2012 |
| 20120098457 | POWER INTERFACE WITH LEDS FOR A TRIAC DIMMER - A power interface is proposed, which keeps an adjustable power supply circuit in a conducting state even if the average current consumption of an attached load is below the adjustable power supply circuit's holding current requirement. The power interface makes use of the dynamic properties of adjustable power supply circuits. Due to the recovery time of the adjustable power supply circuit, it will stay in the conducting state even if there is no current flowing for a short while. The power interface makes use of this effect by interrupting and re-establishing a current flow from the adjustable power supply circuit. | 04-26-2012 |
| 20120104964 | LED DRIVER WITH PWM DIMMING AND METHOD THEREOF - The present technology is generally related to LED drivers with PWM dimming. In one embodiment, a dimming signal is generated based on a pulsed input signal. The pulsed input signal is converted into at least one current signal to drive an LED. And the conversion is enable and disabled by the dimming signal. | 05-03-2012 |
| 20120104965 | CURRENT RINGING FILTER FOR DIMMABLE COMPACT FLUORESCENT LAMPS - A ballast or drive circuit is located between a dimmer switch and at least one light source or lamp. The ballast includes an electromagnetic interference (EMI) filter operatively disposed between the dimmer switch and the at least one lamp. The EMI filter includes an inductor. A low pass filter, preferably an inductor, is serially connected to the inductor of the EMI filter and situated between the dimmer switch and EMI filter for addressing currency ringing, reducing high current peaks, and decreasing flickering that would otherwise result with multiple light sources when the lamp is turned on. | 05-03-2012 |
| 20120104966 | DRIVE CIRCUIT FOR LIGHT EMITTING DIODE ARRAY BASED ON A BUCK-BOOST TOPOLOGY - Features of the invention are related to drive circuits that provide both power factor correction and voltage conversion in a single circuit and in some implementations drive an LED array. This single stage converter uses a buck-boost topology and can operate LED arrays that have DC voltages above or below the AC line voltage. An output side filter and bulk energy storage device is placed at the output of the circuit. Bulk energy storage can be provided by an inductor, a capacitor, or a combination of an inductor and a capacitor. The output side filtering can be provided by a capacitor or a capacitor and an inductor. The circuit also includes a switch and a switch control device for controlling the switch to provide power factor correction. | 05-03-2012 |
| 20120104967 | NON-LINEAR LOAD DRIVING CIRCUIT AND CONTROLLER - A non-linear load driving circuit and a controller for controlling a conversion circuit to drive a non-linear load are provided. The controller includes a feedback unit, a pulse width control unit, and an overshoot reduction unit. The feedback unit generates a feedback signal according to a current feedback signal that represents a load current flowing through the non-linear load. The pulse width control unit generates a control signal according to the feedback signal to control a power output of the conversion circuit. The overshoot reduction unit generates an overshoot reduction signal when the load current changes from being smaller than to being greater than a predetermined value according to the current feedback signal. The pulse width control unit receives the overshoot reduction signal and reduces the duty cycle of the control signal accordingly. Thereby, stability of feedback control is improved and damage to circuit is prevented. | 05-03-2012 |
| 20120104968 | POWER CONVERTING CONTROLLER AND LIGHT-EMITTING DIODE DRIVING CIRCUIT - A power converting controller and an LED driving circuit are provided. The power converting controller controls a converting circuit, which converts an input power source into an appropriate power source to drive a load. The power converting controller includes a feedback control unit, an open-circuit judging unit and a protection unit. The feedback control unit controls the converting circuit according to a feedback signal representing the status of the load. As the open-circuit judging unit has judged that the load is continuously in an open-circuit status for a predetermined time length, the open-circuit judging unit generates an open-circuit protection signal. The protection unit is coupled to the feedback control unit and the open-circuit judging unit so as to generate a protection signal as receiving the open-circuit protection signal and thereby the feedback control unit enters a latch status to stop controlling the converting circuit. | 05-03-2012 |
| 20120104969 | Control Apparatus for Driving a Luminaire and Luminaire - A control apparatus ( | 05-03-2012 |
| 20120104970 | LIGHTING POWER SUPPLY DEVICE AND METHOD FOR CONTROLLING HOLDING CURRENT - A lighting power supply device receives a voltage converted from an alternating current to a direct current by a rectifying circuit rectifying the alternating current whose phase is controlled by a phase control type dimmer, and generates and outputs a direct current voltage/current to be supplied to a load. The lighting power supply device includes: a control circuit, and the control circuit gradually decreases a current drawn from the rectifying circuit from a predetermined current value set in advance, determines a current value immediately before detecting a malfunction of the phase control type dimmer as a drawn current value, and performs current control so as to maintain the determined current value. | 05-03-2012 |
| 20120112654 | Wireless Adaptation of Lighting Power Supply - Methods, systems, and apparatus, for wirelessly controlling a power supply device that controls a load. A wireless adapter includes a wireless communication device that receives transmissions from a wireless controller, a serial interface for a serial data connection to a power supply processing device integrated in the power supply device, an adapter processing device that receives the control signals the wireless communication device outputs, generates the control commands from the control signals, and outputs the control commands to the serial interface to cause the power supply processing device to control power provided to the load in a manner specified by the control commands, and an adapter power circuit that receives regulated direct current (DC) power from the power supply device and is powered from the regulated DC power received, and provides power to the wireless communication device and the adapter processing device. | 05-10-2012 |
| 20120112655 | PWM SIGNAL GENERATING CIRCUIT FOR DC-DC CONVERTER USING DIMMING SIGNAL AND LED DRIVING CIRCUIT HAVING THE SAME IN DIRECT DIGITAL DIMMING METHOD - An LED driving circuit is provided. The LED driving circuit includes an input unit which receives an input dimming signal for driving an LED array, a PWM signal generating unit which extends an on-period of the input dimming signal to form an extended dimming signal, and generates a PWM signal using the extended dimming signal, a DC-DC converter which supplies output voltage to the LED array using the PWM signal, and an LED driving unit which drives the LED array using the input dimming signal. | 05-10-2012 |
| 20120112656 | PWM SIGNAL GENERATING CIRCUIT FOR DC-DC CONVERTER USING DIMMING SIGNAL AND LED DRIVER CIRCUIT USING THE SAME IN DIGITAL PWM METHOD HAVING FIXED PHASE MODE - A PWM signal generating circuit and method, and an LED driver circuit using same, is disclosed. The PWM signal generating circuit generates a PWM signal for a DC-DC converter using a dimming signal, and includes an oscillator which generates a first clock signal having a predetermined frequency, a synchronizing unit which synchronizes the dimming signal to the first clock signal, and a PWM signal generating unit which generates the PWM signal in response to the first clock signal having a falling edge while the synchronized dimming signal is on. | 05-10-2012 |
| 20120112657 | LOW COST POWER SUPPLY CIRCUIT AND METHOD - A power supply circuit has an LLC converter stage for converting a DC voltage input into a DC voltage output, and at least one hysteretic converter stage. Each hysteretic converter stage has a DC voltage input coupled to the DC voltage output of the LLC converter stage, and a DC current output. The LLC converter stage lacks a feedback control, and is operated at its load independent point. A ripple on the DC voltage output of the LLC converter does not affect the output current of the hysteretic converter stage. The stable DC current output of the hysteretic converter stage is coupled to a load having one or more LED strings. | 05-10-2012 |
| 20120119670 | DEVICE AND METHOD FOR DYNAMICALLY CHANGING COLOR - A lighting system ( | 05-17-2012 |
| 20120119671 | APPARATUS AND METHOD FOR CIRCUIT CONFIGURATION FOR POWERING LIGHT EMITTING DIODES - A circuit configuration for powering electrical loads, especially light emitting diodes, using a DC voltage converter with controllable switching element. | 05-17-2012 |
| 20120126717 | LIGHTING APPARATUS - In a lighting apparatus including an emission unit and a constant current control part and/or a constant voltage control part for controlling a light quantity of the emission unit on the basis of a control signal, the constant current control part and/or the constant voltage control part includes light quantity control means for controlling the light quantity by changing the magnitude of a current and/or a voltage to be supplied to the emission unit in accordance with the control signal. Since no switching element is used in dimming level control of the emission unit, noise derived from an on/off operation of a switching element is not caused, and hence, noise may be reduced. | 05-24-2012 |
| 20120139438 | LED Drivers and Control Methods - A method of operating an LED driver including a power converter to generate an output current for powering an LED and to provide active power factor correction is disclosed. The power converter is coupled between an input to receive a rectified AC voltage and an output for providing the output current to the LED. The method includes operating the power converter at a substantially fixed frequency in an open loop mode based on a current through the inductive element and the rectified AC voltage. LED drivers operable in accordance with the disclosed method are disclosed. | 06-07-2012 |
| 20120139439 | LIGHT EMITTING DIODE DRVING APPARATUS AND METHOD FOR HOLDING DRIVING VOLATGE THEREOF - A light emitting diode (LED) driving apparatus is disclosed. The LED driving apparatus includes a power converter, a voltage sample-and-hold and comparison circuit, and a pre-charge clock generator. The power converter has a power transistor switch for processing power conversion and outputs a driving voltage at an output terminal. The voltage sample-and-hold and comparison circuit enters a sample-and-hold mode or a comparing mode according to a dimming status signal. The voltage sample-and-hold and comparison circuit samples and holds a feedback voltage to obtain a pre-storage voltage during the sample-and-hold mode and compares the pre-storage voltage with the feedback voltage to obtain a comparison result during the comparing mode. The voltage sample-and-hold and comparison circuit generates a pre-charge enable signal according to the comparison result. The pre-charge clock generator generates a pre-charge clock signal to control the power transistor switch according to the pre-charge enable signal and a clock signal. | 06-07-2012 |
| 20120139440 | SEMICONDUCTOR DEVICE AND ELECTRONIC APPARATUS USING THE SAME - The transistor suffers the variation caused in threshold voltage or mobility due to gathering of the factors of the variation in gate insulator film resulting from a difference in manufacture process or substrate used and of the variation in channel-region crystal state. The present invention provides an electric circuit having an arrangement such that both electrodes of a capacitance element can hold a gate-to-source voltage of a particular transistor. The invention provides an electric circuit having a function capable of setting a potential difference at between the both electrodes of the capacitance element by the use of a constant-current source. | 06-07-2012 |
| 20120146537 | VARIABLE-INDUCTOR ELECTRONIC BALLASTS - A variable-inductor electronic ballast includes a generic ballast and a variable-inductor controller. The variable-inductor controller includes either an additive-inductor or a subtractive-capacitor embodiment. An optional winding to the existing transformer can enhance the ratio of power steps. | 06-14-2012 |
| 20120146538 | 3-WAY, PHASE-CUT DIMMABLE LED DRIVER - An LED driver is presented with a sensing circuit and attenuator circuits to provide three-way switched dimming as well as phase-cut dimming to control the output power driving an LED load. | 06-14-2012 |
| 20120146539 | JITTER DETECTION AND COMPENSATION CIRCUIT FOR LED LAMPS - A power signal driving an LED is measured to determine a characteristic (e.g., a power level) of the power signal. The characteristic is compared to the power signal's history and any deviation is detected. If the source of the deviation is determined to be jitter, the deviation is compensated for. | 06-14-2012 |
| 20120146540 | METHOD AND APPARATUS TO CONTROL LED BRIGHTNESS - Method and apparatus to control LED brightness are disclosed. An example method includes receiving a dimmer control signal; determining a cutoff point of the dimmer control signal; determining the position of a rising edge signal within the dimmer control signal; determining if the rising edge signal occurred before the cutoff point; and outputting an LED brightness signal indicating full brightness when the rising edge signal occurred before the cutoff point, and indicating a scaled brightness when the rising edge signal did not occur before the cutoff point. | 06-14-2012 |
| 20120153860 | Piezo-Phototronics - A device includes a substrate having a first surface. A piezoelectric nanowire is disposed on the first surface of the substrate. The piezoelectric nanowire has a first end and an opposite second end. The piezoelectric nanowire is subjected to an amount of strain. A first Schottky contact is in electrical communication with the first end of the piezoelectric nanowire. A second Schottky contact is in electrical communication with the second end of the piezoelectric nanowire. A bias voltage source is configured to impart a bias voltage between the first Schottky contact and the second Schottky contact. A mechanism is configured to measure current flowing through the piezoelectric nanowire. The amount of strain is selected so that a predetermined current will through the piezoelectric nanowire when light of a selected intensity is applied to a first location on the piezoelectric nanowire. | 06-21-2012 |
| 20120153861 | SYSTEMS AND METHODS FOR DYNAMIC POWER MANAGEMENT FOR USE WITH A VIDEO DISPLAY DEVICE - Embodiments of the present invention relate to methods and circuits for use with a system including a light emitting element (e.g., a laser diode or light emitting diode) that is driven by a current produced by a current output digital-to-analog converter (DAC), wherein the light emitting element or the DAC is powered by a supply voltage produced by a voltage supply. In accordance with an embodiment, a measure indicative of a voltage at an output of the DAC is obtained, wherein the voltage at the output of the DAC is indicative of a voltage headroom available for the DAC. The measure indicative of the voltage at the output of the DAC is compared to one or more predetermined references, and the supply voltage is controlled based on the comparison(s). | 06-21-2012 |
| 20120153862 | APPARATUS OF DRIVING LIGHT EMITTING DIODE USING ERASABLE PROGRAMMABLE LOGIC DEVICE CHIP - Provided is an apparatus that drives a light emitting device using an erasable programmable logic device (EPLD) chip. The apparatus may include the light emitting device, and a driving unit to use the EPLD chip storing programming information corresponding to the light emitting device, and to drive the light emitting device based on the stored programming information. The EPLD chip may receive the programming information inputted from an external terminal, and may store the programming information in a predetermined storage space. | 06-21-2012 |
| 20120153863 | LED LIGHTING DEVICE AND ILLUMINATION APPARATUS INCLUDING SAME - An LED lighting device includes a converter for converting a power source voltage into a DC voltage and outputting it to an LED unit; and a controller for controlling an output of the converter. The converter has a chopper circuit including a series circuit of an inductance element and a capacitor; a switching element connected to the inductance element in series and turned on/off by the controller; and a diode as discharging path of the inductance element during an OFF state of the switching element. The controller controls an on/off time of the switching element such that a current supplied to the LED unit during a specific time period after a lighting operation is started becomes smaller than a current supplied to the LED unit in a steady state by using a voltage generated in a secondary coil of the inductance coil as an operating voltage thereof. | 06-21-2012 |
| 20120153864 | WAVELENGTH SPECIFIC SILICON LIGHT EMITTING STRUCTURE - This invention relates to relates to silicon light emitting devices (SiLEDs), and its application into current Complementary Metal Oxide Semiconductor (CMOS) technology, as well into future Silicon on Insulator (SOI) technology. According to the invention, a silicon based light emitting device is designed to operate by means of avalanche carrier multiplication and emitting at the below threshold wavelength detection range for Silicon of 850 nm and such that it is compatible with CMOS silicon nitride, silicon oxi-nitride and polymer waveguide technology. This favours diverse electro-optical system applications such as electro-optical couplers, fast data transfer on and from chip, various optical interconnect configurations as well as diverse on-chip sensor, fluidic and micro-optical-mechanical sensor applications. Under particular operating conditions emissions at specific wavelengths (for example the longer wavelengths) may be favoured, while in other cases tuning of the emitted radiation may be obtained. | 06-21-2012 |
| 20120161665 | PRECISION LIGHT CONTROL APPARATUS AND METHODS - A method of controlling an illumination apparatus comprises monitoring a dimmer modulated control voltage, controlling the illumination apparatus in a normal mode wherein changes in the dimmer modulated control voltage adjust a light output of the illumination apparatus within a normal range until the dimmer modulated control voltage manifests a first mode change condition, and, when the dimmer modulated control voltage manifests the first mode change condition, switching from the normal mode to a deep dimming mode wherein changes in the dimmer modulated control voltage adjust the light output of the illumination apparatus within a deep dimming range which is smaller than the normal range. | 06-28-2012 |
| 20120169248 | SMART DIMMABLE POWER SUPPLY APPARATUS FOR ENERGY SAVING LAMP AND METHOD FOR THE SAME - A smart dimmable power supply apparatus for energy saving lamp ( | 07-05-2012 |
| 20120169249 | SYSTEMS AND APPARATUS FOR AUTOMATICALLY DERIVING AND MODIFYING PERSONAL PREFERENCES APPLICABLE TO MULTIPLE CONTROLLABLE LIGHTING NETWORKS - Systems and methods for deriving and modifying personal preferences related to at least one controllable lighting network are disclosed. The systems include a processor that can be used in conjunction with a personal communication device and a preferences database. The processor is used to detect an identifier for a user, a plurality of adjustments to the at least one controllable lighting network requested by the user, and a context corresponding to each of the plurality of adjustments. The processor in some such systems has an associated local memory to store the plurality of adjustments, corresponding contexts, and the identifier of the associated user. The processor is further used to analyze the plurality of lighting adjustments and the corresponding contexts. Based on the analysis, the processor identifies a correlation between the plurality of adjustments and the contexts, and create at least one personal preference rule associated with the user identifier based on the correlation. The preferences database in some such systems is used to store the rules and the plurality of adjustments. | 07-05-2012 |
| 20120176060 | Power supply device - In various embodiments, a two-switch flyback power supply may include a transformer having a primary winding and a secondary winding to feed a load; a pair of electronic switches alternatively switchable on and off to connect the primary winding of said transformer to an input line to feed said primary winding of said transformer, wherein at least one of said electronic switches is an electronic switch having a control electrode floating with respect to ground; a capacitive voltage divider arranged between said input line and the ground of the device, with the dividing point of said capacitive voltage divider connected to an intermediate point of said primary winding of said transformer; and an auxiliary secondary winding in said transformer, said auxiliary secondary winding feeding the control electrode of said at least one of said electronic switches. | 07-12-2012 |
| 20120176061 | METHOD AND DEVICE FOR DRIVING AN OLED DEVICE - An OLED has a characteristic threshold voltage (V | 07-12-2012 |
| 20120181948 | Photographic Wireless Communication Protocol System and Method - A system and method for converting power control value standards during photographic wireless communication from a camera to one or more remote lighting devices. A power control value of a camera may be converted to a different standard for wireless communication and converted to another standard for delivery to a remote lighting device. Different lighting devices may utilize different standards and have conversion to those appropriate standards at the receiver side even where the lighting device standard differs from the camera standard. | 07-19-2012 |
| 20120187862 | LIGHT EMITTING DIE (LED) PACKAGES AND RELATED METHODS - LED packages and related methods are provided. The LED packages can include a submount having a top and bottom surface and a plurality of top electrically conductive elements on the top surface of the submount. An LED can be disposed on one of the top electrically conductive elements. The LED can emit a dominant wavelength generally between approximately 600 nm and approximately 650 nm, and more particularly between approximately 610 nm and approximately 630 nm when an electrical signal is applied to the top electrically conductive elements. A bottom thermally conductive element can be provided on the bottom surface and is not in electrical contact with the top electrically conductive elements. A lens can be disposed over the LED. The LED packages can have improved lumen performances, lower thermal resistances, improved efficiencies, and longer operational lifetimes. | 07-26-2012 |
| 20120187863 | LIGHT SOURCE LIGHTING DEVICE AND LUMINAIRE - A power supply circuit drives circuits having different numbers of series-connected LEDs without changing a circuit constant or a component. An LED series circuit is connected to a power converter circuit of a power supply circuit. The power converter circuit is controlled by a control arithmetic circuit, and supplies a constant current to the LED series circuit. A voltage detection circuit detects a voltage applied to the LED series circuit. The control arithmetic circuit checks whether the LED series circuit has 40 LEDs or 20 LEDs, based on the voltage detected by the voltage detection circuit. The control arithmetic circuit holds a constant-current value table for 40 LEDs and a constant-current value table for 20 LEDs. In accordance with the detected voltage, the control arithmetic circuit selects one constant-current value table, and controls the power converter circuit based on the constant-current value table selected. | 07-26-2012 |
| 20120187864 | LIGHTING DEVICE AND LUMINAIRE - According to one embodiment, a lighting device includes a lighting circuit. The lighting circuit includes a direct-current power supply and a DC-DC converter, and lights an illumination lamp by constant-current control. An output capacitor is connected in parallel to an output end of the DC-DC converter. A capacitance of the output capacitor is set to such a value that a peak value of a pulse-like current flowing when the illumination lamp is instantaneously detached from and attached to the output end of the DC-DC converter is one or more and four or less times a load current of the illumination lamp. | 07-26-2012 |
| 20120194094 | LIGHT-EMITTING DEVICE - This disclosure discloses a light-emitting device adapted for receiving an alternating current signal from a power source. The light-emitting device comprises: a rectifying unit for receiving and regulating the alternating current signal into a first direct current signal; a first capacitor electrically connected in parallel with the rectifying unit and for receiving and regulating the first direct current signal to a second direct current signal; and a light-emitting unit electrically connected in parallel with the first capacitor and receiving the second direct current signal. The second direct current signal is a periodic signal, and the second direct current signal has a maximum voltage and a minimum voltage. The voltage difference between the maximum and minimum voltages is less than 5% of the maximum voltage in one cycle of the periodic signal. | 08-02-2012 |
| 20120206061 | TWO LIGHT LEVEL CONTROL CIRCUIT - A ballast to power a lamp includes two switches, each to selectively connect the ballast to respective high voltage terminals, each having two states (ON and OFF). The ballast also includes a converter circuit that provides a voltage to energize the lamp, and a detector circuit. The detector circuit includes two inputs, each coupled to a respective switch; two resistors, each coupled to a respective input; two outputs, each connected to the converter circuit; a transistor network; and a capacitor. One output provides the converter circuit with power, and is connected to the input via the resistors. The other provides the converter circuit with a control signal, indicating a voltage level so as to power the lamp to a particular light level, depending on the switches' states. The transistor network detects a differential voltage between the inputs, generating the control signal as a result. The capacitor smoothes the control signal. | 08-16-2012 |
| 20120206062 | TIME-DOMAIN REDUCTION OF FLICKER AND POWER CONSUMPTION IN LED LIGHTING - In accordance with certain embodiments, a power signal for driving an LED lighting system is analyzed on a timeslice basis, and the signal is adjusted (e.g., on a timeslice basis) to compensate for deviations therein. | 08-16-2012 |
| 20120212151 | PROGRAMMABLE CURRENT PWM DIMMING CONTROLLER - An integrated system for supplying direct current and brightness dimming for light emitting diodes (LEDs) comprising: an LED driver power supply for supplying a constant direct current; an array of one or more LEDs; and an integrated programmable LED current pulse width modulation (PWM) dimming controller; wherein the integrated programmable LED current pulse width modulation (PWM) dimming controller comprising: a front control panel for controlling the brightness of the array of one or more LEDs; and an LED current PWM dimming module. | 08-23-2012 |
| 20120212152 | LED DRIVING DEVICE - Disclosed herein is a light emitting diode (LED) driving device for driving a multi-channel LED element or an LED array for each channel, the LED driving device including: a constant current driver driving currents flowing in each channel; and a minimum voltage selector receiving voltage levels of each channel and selecting a minimum voltage level to thereby feedback the selected minimum voltage level to the constant current driver, wherein matching characteristics of currents flowing in each channel is improved and a size of an integrated circuit (IC) chip is also reduced as compared to a case according to the related art, thereby making it possible to reduce a production cost and satisfy the trend of miniaturization of the chip, while solving a performance deterioration problem due to deterioration of the matching of the currents between the channels. | 08-23-2012 |
| 20120212153 | DIAMONDOID MONOLAYERS AS ELECTRON EMITTERS - Provided are electron emitters based upon diamondoid monolayers, preferably self-assembled higher diamondoid monolayers. High intensity electron emission has been demonstrated employing such diamondoid monolayers, particularly when the monolayers are comprised of higher diamondoids. The application of such diamondoid monolayers can alter the band structure of substrates, as well as emit monochromatic electrons, and the high intensity electron emissions can also greatly improve the efficiency of field-effect electron emitters as applied to industrial and commercial applications. | 08-23-2012 |
| 20120217896 | INTERCHANGEABLE LED BULBS - Disclosed are circuits that allow LED bulbs to be replaced regardless of color or construction of the LED element. When used for an LED light string, replacing an LED bulb does not affect the operation of the entire string. When used for other illumination purpose, for example, room light, the bulbs are interchangeable because they have the same operating voltage and current. A standardized input impedance is selected for all of the LED bulbs regardless of construction and color. A resistor circuit is used to create the standardized input impedance while optimizing the operating parameters of the LED element. The resistor circuit includes a bypass element so that if a LED element burns open, a series wired LED string will not go dark. This eliminates the necessity for parallel connected LED bulbs and allows enjoyment of other advantages and economies of series wired LED strings. | 08-30-2012 |
| 20120223655 | COMPENSATION METHOD AND APPARATUS FOR LIGHT EMITTING DIODE CIRCUIT - A compensation method for a light emitting diode (LED) circuit including a first transistor, a second transistor, a capacitor, and a LED is illustrated. A first end as a control end of the first transistor is connected to one end of the second transistor and the capacitor, and a second end of the first transistor is connected to the LED. A width to length (W/L) ratio of the second transistor is less than one. An initial control voltage is applied to a control end of the second transistor, and the current output voltage of the LED is correspondingly measured. If a difference between the current output voltage and an initial output voltage exceeds a predetermined value, a compensation voltage, which is a summation of the initial control voltage and the difference, is applied to the control end of the second transistor. | 09-06-2012 |
| 20120223656 | Smart Load Control Device Having a Rotary Actuator - A load control device for controlling the amount of power delivered from an AC power source to an electrical load comprises a rotary actuator, such as a rotary knob or a rotary wheel. The load control device increases and decreases the amount of power delivered to the electrical load in response to rotations of the rotary knob in first and second directions, respectively. The load control device accelerates the rate of change of the amount of power delivered to the load in response to the angular velocity of the rotary actuator. The load control device generates a ratcheting sound when the rotary actuator is rotated in the first direction at a high-end intensity of the load control device. The load control device is operable to control the electrical load in response to both actuations of the rotary actuator and digital messages received via a communication link. | 09-06-2012 |
| 20120229047 | BACKLIGHT MODULE, OVER-TEMPERATURE PROTECTION CIRCUIT AND OVER-TEMPERATURE PROTECTION METHOD THEREOF - An over-temperature protection circuit is adapted to a light source driver coupled to a light-emitting device. The light source driver has a current setting terminal receiving a set current to control the magnitude of a current flowing through the light-emitting device. The over-temperature protection circuit includes a first, second, and third resistors, a thermal resistor measuring temperature of the light-emitting device, and a diode. A first terminal of the first resistor provides the set current to the current setting terminal. The second resistor is coupled between the first resistor and a ground voltage in series. A first terminal of the thermal resistor is coupled to a reference voltage. The third resistor is coupled between the thermal resistor and the ground voltage in series. An anode and a cathode of the diode are respectively coupled to a second terminal of the thermal resistor and a second terminal of the first resistor. | 09-13-2012 |
| 20120235593 | LIGHT HAVING A CIRCUIT ACCOMMODATING BATTERIES OF DIFFERENT TYPES AND/OR SIZES - An electronic circuit and/or method that determines a type and/or size of a battery in a light and controls operation of a light source may comprise: a circuit measuring the voltage of the battery; and a processor for determining the measured battery voltage. The processor may compare the measured battery voltage and a predetermined voltage and set an operating condition of the light source based upon the difference between the measured battery voltage and the predetermined voltage. The processor may apply a predetermined load to the battery for a predetermined time and measure battery voltage during the predetermined time; and determine the difference between the measured voltage of the battery and the measured battery voltage during the predetermined time. | 09-20-2012 |
| 20120235594 | DRIVER FOR A SOLID STATE LAMP | 09-20-2012 |
| 20120235595 | Method for Setting an Electronic Ballast, an Electronic Ballast and a Compensating Unit - A method for setting an electronic ballast ( | 09-20-2012 |
| 20120249012 | METHOD AND SYSTEM FOR SUPPLYING MULTIPLE LED DRIVERS USING THE SAME TRAIC DIMMER - An RCD transient absorption circuit, having a first port and a second port, the RCD transient absorption circuit comprising a first resistor, a capacitor and a diode, wherein: the first resistor is connected in parallel to the capacitor, and resultant parallel connection of which is connected in series to a diode; one end of the resultant parallel connection of the first resistor and the capacitor is connected to a cathode of the diode; another end of resultant parallel connection is the first port of the RCD transient absorption circuit; and the second port of the RCD transient absorption circuit is an anode of the diode; the RCD transient absorption circuit further comprises a power-trimming device connected in parallel to the first resistor and the capacitor. | 10-04-2012 |
| 20120249013 | SYSTEM AND METHOD FOR LOW LEVEL DIMMING - The present disclosure is directed to an inexpensive yet intelligent solution for dimming light devices to low level intensities in which the common lighting systems generally have difficulties maintaining stability and flicker-free operation. The systems and method described herein enable a lighting system to utilize a dimmer to dim one or more lighting devices to low level intensities without introducing flickering or inconsistent operation of the lights. More specifically, the systems and methods described herein enable a dimmer to dim lights to anywhere between 0% and 5% of maximum brightness, while ensuring that the lights operate at these levels consistently, smoothly and without any visible flickering. | 10-04-2012 |
| 20120262086 | CIRCUIT FOR DETERMINING AN AVERAGE VALUE - A circuit for determining an average value of a quasiperiodic signal may include an integrator, a sample and hold circuit coupled to an output of the integrator, wherein the sample and hold circuit includes a sample and hold circuit output, a feedback path coupled to the sample and hold circuit output and configured to feedback the signal provided at the sample and hold circuit output as a feedback signal, a subtractor configured to form a difference signal representing the difference between the quasiperiodic signal and the feedback signal, wherein an output of the subtractor is coupled to an input of the integrator to thereby provide the difference signal to the input of the integrator. | 10-18-2012 |
| 20120262087 | LIGHTING DEVICE FOR SOLID-STATE LIGHT SOURCE AND ILLUMINATION APPARATUS INCLUDING SAME - A lighting device for a solid-state light source includes a DC power source circuit section which flows a current in a solid-state light source by using a charging/discharging current or either one of charging and discharging currents of a inductor connected in series to a switching element, and a current control section having a first switching control unit for changing an ON width of the switching element depending on a dimming level and a second switching control unit for controlling an ON timing of the switching element. The second switching control unit changes a time until the switching element is turned on from a zero-crossing of the discharging current of the inductor such that the time becomes substantially the same when the dimming level is equal to or greater than a predetermined level, and the time becomes longer when the dimming level is less than the predetermined level. | 10-18-2012 |
| 20120268031 | SYSTEMS AND METHODS FOR DIMMING CONTROL WITH CAPACITIVE LOADS - System and method for dimming control. The system includes a system controller including a first controller terminal and a second controller terminal, a transistor including a first transistor terminal, a second transistor terminal and a third transistor terminal, and a resistor including a first resistor terminal and a second resistor terminal. The system controller is configured to generate a first signal at the first controller terminal based on an input signal and to generate a second signal at the second controller terminal based on the first signal. The first transistor terminal is coupled to the second controller terminal. The first resistor terminal is coupled to the second transistor terminal. The second resistor terminal is coupled to the third transistor terminal. The transistor is configured to receive the second signal at the first transistor terminal and to change between two conditions in response to the second signal. | 10-25-2012 |
| 20120274231 | Colloidal Silicon Quantum Dot Visible Spectrum Light-Emitting Diode - A method is provided for fabricating a colloidal silicon quantum dot (SiQD) visible spectrum light-emitting diode (LED). The method begins with a transparent first electrode, and a hole-injection layer is formed overlying the first electrode. A hole-transport layer is formed overlying the hole-injection layer, and a SiQD layer overlies the hole-transport layer, where each SiQD has a diameter of less than about 6 nanometers (nm). An electron-transport layer is formed overlying the SiQD layer, and a second electrode is formed overlying the electron-transport layer. | 11-01-2012 |
| 20120286696 | DIMMABLE LED LAMP - A driver for an LED lamp assembly includes a rectifier configured to receive an AC power and produce a first DC power and a switching regulator coupled to the rectifier. The switching regulator is configured to receive the first DC power and produce an output DC power. The driver also includes a current controller coupled between the rectifier and the switching regulator. The current controller is configured to damp and stabilize an electric current flowing between the switching regulator and the rectifier. | 11-15-2012 |
| 20120286697 | SEMICONDUCTOR DEVICE - A semiconductor device in which a transistor can supply an accurate current to a load (EL pixel and signal line) without being influenced by variations is provided. | 11-15-2012 |
| 20120293090 | ORGANIC LIGHT EMITTING DEVICE - An organic light emitting device includes a first electrode formed over a substrate; an intermediate layer that is formed over the first electrode and includes an organic light emitting layer; a second electrode that includes a central electrode unit disposed in a central region and a peripheral electrode unit disposed in a peripheral region, the intermediate layer being disposed between the first and second electrodes; and a power unit configured to apply voltages to the first electrode and the second electrode. The power unit is configured to apply different voltages to the first electrode, the central electrode unit, and the peripheral electrode unit. | 11-22-2012 |
| 20120293091 | REMOTE CONFIGURATION OF LIGHTING POWER SUPPLY - Systems, methods, and computer program products for remote configuration of one or more power supplies, particularly lighting power supplies, are disclosed. A configuration signal that includes a setting for a parameter is generated and then transmitted to a power supply. The power supply decodes the configuration signal and, if one or more certain conditions are met, configures the power supply according to information provided in the configuration signal. | 11-22-2012 |
| 20120299507 | LIGHT SOURCE DRIVING DEVICE - A light source driving device configured to drive a light-emitting unit is provided. The light source driving device includes a direct voltage source, a first capacitance unit, and a switching current adjustment circuit. The direct voltage source is coupled with the light-emitting unit and supplies a direct voltage. The first capacitance unit and the light-emitting unit are connected in parallel. The switching current adjustment circuit and the light-emitting unit are connected in series. The switching current adjustment circuit is configured to bear a part of a voltage stress of the direct voltage source and is configured to switch the direct voltage. | 11-29-2012 |
| 20120299508 | XENON LAMP DRIVE UNIT, METHOD FOR DRIVING XENON LAMP, AND ARTIFICIAL SOLAR LIGHT IRRADIATION UNIT - A xenon lamp drive unit of the present invention comprises: a charging circuit; and a current control circuit adapted to supply a current to a xenon lamp by using a charged voltage of the charging circuit as a power source, wherein the current control circuit is adapted to supply, in a first period after a lamp ignition, a high output lamp current having a higher current value than a steady output lamp current to the xenon lamp by constant current control and supply, in a second period after the first period, the steady output lamp current to the xenon lamp by constant current control. | 11-29-2012 |
| 20120299509 | LIGHTING SYSTEM AND METHOD FOR CONTROLLING THE SAME - A lighting system as disclosed herein may include a lighting device, a switch to control the lighting device, and a controller to assign an address to the lighting device and the switch. The controller may be connected to the lighting device and the switch over a ZigBee network. The lighting device and the switch may have a first address and a first network identifier. The lighting device or the switch transmits a request for address assignment to the controller based on the first address, the request including the first network identifier, and the controller compares the first network identifier to a second network identifier stored at the controller, and may assign a second address based on the request if the first network identifier is the same as the second network identifier. | 11-29-2012 |
| 20120306403 | DRIVER CIRCUIT FOR POWERING A DC LAMP IN A NON-DC LAMP FITTING - The invention comprises a driver circuit for adapting an LED lamp or an LED lamp array to be used in a lamp fitting for a non-LED type lamp without modification of the lamp fitting. The driver circuit is such that the LED lamp or LED lamp array can be inserted into the lamp fitting as a replacement for a non-LED lamp such that the combined unit of the LED lamp and the driver circuit are retained in the lamp fitting and make electrical connections with the lamp fitting's electrical contacts for powering the inserted lamp. The driver circuit enables the LED lamp of lamp array to operate with any of an ac power supply, an electromagnetic ballast or an electronic ballast. The driver circuit comprises a first stage comprising a filter circuit and having an input connectable to any of an ac power supply, an electromagnetic ballast or an electronic ballast of the lamp fitting, a second stage comprising a high frequency switched network and having an input connected to an output of the first stage, and a third stage comprising an ac/dc converter and having an input connected to an output of the second stage and an output connectable to an LED lamp. The third stage is configured to deliver dc power to a connected LED lamp. The second stage is configured to operate in a low frequency mode when said driver circuit is connected to an ac power supply or an electromagnetic ballast of the lamp fitting and configured to operate in a high frequency mode when said driver circuit is connected to an electronic ballast of the lamp fitting. | 12-06-2012 |
| 20120306404 | LED DRIVER CIRCUIT - An LED driver circuit, including: an LED load, having a top end, a middle end, and a bottom end, wherein the top end is coupled to a line voltage; and a variable load device, having a first input end, a second input end, and an output end, wherein the first input end is coupled to the middle end of the LED load for receiving a first current, the second input end is coupled to the bottom end of the LED load for receiving a second current, and the output end is for providing an output current, which equals the sum of the first current and the second current, and wherein the first current increases/decreases as the second current decreases/increases. | 12-06-2012 |
| 20120326623 | SOCKET ADAPTOR HAVING AC-DC CONVERTOR FOR LED LAMP - A socket adaptor for an LED lamp includes an adaptor body and an AC-DC converter disposed in the adaptor body. The adaptor body includes a holder for receiving an LED lamp, the holder being configured according to industrial standards. The adaptor body also includes an external base for attaching the socket adaptor to a lamp holder, the external base being configured according to the industrial standards. | 12-27-2012 |
| 20120326624 | PHOTON SOURCE - A photon source comprising a photon source body, said photon source body comprising at least one quantum dot; carrier injection means for injecting carriers into said at least one quantum dot and change of state means for changing the state of the carriers within the quantum dot after a predetermined time duration, the carrier injection means injecting carriers which are configured to allow emission of radiation by radiative recombination | 12-27-2012 |
| 20120326625 | Electrical Switch, As For Controlling a Flashlight - An electrical switch and a flashlight employing the switch may comprise a base having three electrical conductors thereon and an electrically conductive flexible dome adjacent the base. The flexible dome has plural longer legs extending from its dome and in electrical contact with a first conductor, has a shorter leg extending from its dome and overlying a second conductor, and has its dome overlying a third conductor. A spring may extend from the base of the switch. A pushbutton may be moved to apply sufficient force to cause the shorter leg to contact the second conductor and the dome to contact the third conductor. A spring may be between the pushbutton and the flexible dome to couple force to the flexible dome. | 12-27-2012 |
| 20130015781 | LED DRIVING DEVICE, ILLUMINATOR, AND LIQUID CRYSTAL DISPLAY DEVICEAANM Kanemitsu; RyosukeAACI KyotoAACO JPAAGP Kanemitsu; Ryosuke Kyoto JPAANM Nakayama; MasaakiAACI KyotoAACO JPAAGP Nakayama; Masaaki Kyoto JP - The present invention provides a light emitting diode (LED) driving device, which comprises: a direct current/direct current (DC/DC) controller, for controlling an output segment that is used to generate an output voltage from an input voltage and supply the output voltage to an LED; an output current driver, for generating an output current of the LED; and an output discharging circuit, for performing, based on a predetermined control signal, discharging of the output voltage when a generation action of the output voltage and the output current stops. | 01-17-2013 |
| 20130020964 | POWER CONVERTER FOR A CONFIGURABLE LIGHT-EMITTING DIODE DRIVER - A converter for an LED driver for an LED light source. The converter has a flyback transformer. The primary receives a rectified AC voltage. A switching transistor is coupled in series with the primary. A controller controls the switching transistor on and off to generate a bus voltage across the secondary and a center tap voltage at a center tap of the secondary. The controller is powered by a first low-voltage DC voltage. A first power supply receives the center tap voltage and generates a second low-voltage DC voltage when the center tap voltage is above a cutover voltage. A second power supply has an output coupled to the first power supply output. The second power supply receives the bus voltage and generates the second DC voltage when the center tap voltage is below the cutover voltage. | 01-24-2013 |
| 20130033194 | APPARATUS AND METHOD FOR CONTROLLING LED DRIVING CIRCUIT AND APPARATUS AND METHOD FOR DRIVING LED - An apparatus for driving a light-emitting diode (LED) is provided. The apparatus includes an LED, a voltage sensing unit which senses a voltage applied to the LED, a current sensing unit which senses a current flowing into the LED, a DC-to-DC converter which converts an input voltage into an LED driving voltage and provides the LED driving voltage to the LED, an LED driving unit which drives the LED according to a dimming-on signal and a dimming-off signal; and a control unit which controls the DC-to-DC converter such that the current sensed by the current sensor follows a reference current, if the dimming-on signal is received, and controls the DC-to-DC converter to maintain the voltage sensed by the voltage sensor at a same voltage as a voltage of the LED at a dimming-off time, if the dimming-off signal is received. | 02-07-2013 |
| 20130043807 | LIGHTING DEVICE CONTROL USING VARIABLE INDUCTOR - Various techniques are provided for implementing a lighting device variable control using a variable inductor. In various examples, the variable control may be implemented with a plurality of continuous or stepped settings. The variable control may be adjusted by a user-actuated movement of a part of the lighting device, such as the depression of a tail cap or another appropriate physical control to change the inductance of the variable inductor. An oscillating signal may be induced in a variable inductor circuit that includes the variable inductor. The oscillating signal may exhibit characteristics, such as frequency, that change with the inductance of the variable inductor. Such characteristics may be measured to determine a setting of the variable control and which may be used to adjust the brightness or other attributes of the lighting device. | 02-21-2013 |
| 20130057177 | ADJUSTABLE LIGHT FIXTURE - Methods and apparatus for controlling a light fixture having at least one adjustable attribute are described. In one embodiment, a light fixture having at least one adjustable attribute comprises a housing, a light source disposed within the housing, a cover secured to the housing that allows at least some light from the light source to pass, a light control circuit, coupled to the light source and disposed within the housing, for detecting a state change of a switch and for providing a control signal for varying an attribute of the light fixture, and the switch, coupled to the light control circuit and disposed within the housing, comprising contacts that are opened and closed in response to a non-mechanical stimulus external to the housing. | 03-07-2013 |
| 20130063041 | SEMICONDUCTOR DEVICE - A semiconductor device includes a transistor, a light-emitting element, a first wiring, a driver circuit having a function of controlling the potential of the first wiring, a second wiring, a first switch, a second switch, a third switch, a fourth switch, a first capacitor, and a second capacitor. One of a source and a drain of the transistor is connected to the light-emitting element. With this structure, voltage applied between the source and the gate of the transistor can be corrected in anticipation of variations in threshold voltage, so that the current supplied to the light-emitting element can be corrected. | 03-14-2013 |
| 20130093351 | WIRELESS REMOTE-CONTROLLED SEARCHLIGHT WITH DETACHABLE JUNCTION BOX - A wireless remote-controlled searchlight comprises a detachable junction box capable of being mounted onto or separated from the searchlight based on a user's own attempt, which detachable junction box comprises a PCB having a microcontroller and a RF receiver to input received RF signals transmitted from a wireless transmitter to the PCB; the searchlight is workable only if the detachable junction box mounted onto and electrically connected with the searchlight, but the searchlight is not workable and provides with function of anti-theft if the detachable junction box separated from the searchlight, and particularly the detachable junction box is portable so that the searchlight further provides with function of ease of maintenance or repair if the PCB or the RF receiver is out of order. | 04-18-2013 |
| 20130093352 | Opto-Electronic Devices And Methods - A method for amplifying an input optical signal includes the following steps: providing a light-emitting transistor device having a base region between collector and emitter regions; applying electrical signals with respect to the base, collector, and emitter regions to produce light emission from the base region of the light-emitting transistor device; and applying the input optical signal to the base region of the light-emitting transistor device to produce an amplified optical output from the base region. | 04-18-2013 |
| 20130093353 | APPARATUS FOR AUTOMATICALLY CONTROLLING THE ILLUMINATION OF LED LIGHTING - The present invention relates to an apparatus for automatically controlling illuminance, which transmits a dimming signal based on the zero-crossing of AC power using an illuminance control electronic switch. An apparatus for automatically controlling illuminance of Light-Emitting Diode (LED) lighting according to an embodiment of the present invention includes a dimming control electronic switch for, if manipulation of a switch by a user is sensed during supply of Alternating Current (AC) power to an LED lamp, interrupting supply of the AC power during a preset period of time based on zero-crossing of the AC power, and an LED lamp control device for controlling illuminance of the LED lamp by detecting supply and interruption of the AC power. | 04-18-2013 |
| 20130099696 | SYSTEM FOR INDUCTIVELY POWERING AN ELECTRICAL DEVICE AND ASSOCIATED METHODS - An inductive coupling system for delivering power from an induction assembly attached to a first side of a structure to a load assembly positioned on a second side of a structure. The induction assembly may couple with the load assembly so as to removably attach the load assembly to the second side of the structure. Furthermore, a triggering device in the load assembly may initiate the inductive coupling between the induction and load assemblies. | 04-25-2013 |
| 20130106306 | Lamp Unit and Luminaire | 05-02-2013 |
| 20130106307 | ORGANIC LIGHT EMITTING DIODE DRIVING CIRCUIT, DISPLAY PANEL, DISPLAY AND DRIVING METHOD | 05-02-2013 |
| 20130113390 | DC-DC CONVERTER AND LIGHT EMITTING DIODE DRIVING DEVICE INCLUDING THE SAME - A direct current to direct current converter includes: an input terminal; an output terminal having voltage higher than the input terminal; a coupled inductor boost cell including a coupled inductor connected to the input terminal, a switch connected to the coupled inductor, and an output diode connected to the output terminal; and a clamp and energy transfer cell including a clamp diode connected to the coupled inductor, a clamp capacitor connected to the clamp diode, and an energy transfer diode connected to the output diode. | 05-09-2013 |
| 20130113391 | METHOD OF CONTROLLING A BALLAST, A BALLAST, A LIGHTING CONTROLLER, AND A DIGITAL SIGNAL PROCESSOR - A method of controlling a ballast in a circuit for a lighting application and connected to a mains power supply is disclosed. The method comprises determining whether a dimmer is present in the circuit; in response to detecting that a dimmer is present, determining a zero-crossing of the power supply and setting a bleeder current through the ballast in dependence on the phase of the power supply within a mains half-cycle; and in response to determining that a dimmer is not present, disabling the bleeder current. | 05-09-2013 |
| 20130119887 | Bi-level dimming controller for LED light fixture - A bi-level dimming control circuit is disclosed. The bi-level dimming control circuit is electrically coupled between two switches and a driver circuit that is compatible with 0 to 10 volt dimming signals. The bi-level dimming control circuit controls the output from the driver circuit based on the on and off positions of the switches. In repose to the on and off positions of the switches the driver circuit powers a light engine between a maximum light output mode, a zero light output mode and a reduced or dimmed light output mode. The bi-level control circuit is used to modulate LED light engines, fluorescent light engines and combinations thereof. | 05-16-2013 |
| 20130119888 | POWER INTERFACE FOR A POWER SUPPLY CIRCUIT - A parallel resonant converter is operated directly from rectified mains. The single-stage power supply copes with present dimmers (such as leading edge dimmers and trailing edge dimmers) and meets EMC standards. The operating scheme allows avoiding exciting 100/120 Hz flicker without using an electrolytic capacitor. This is possible during both full operation and dimmed operation. Deep dimming down to less than 5% is possible and does not require extra power components. | 05-16-2013 |
| 20130119889 | LAYERED STRUCTURE OF A LUMINESCENT DEVICE, METHOD FOR PRODUCING AND OPERATING A LUMINESCENT DEVICE AND CORRESPONDINGLY PRODUCED LUMINESCENT DEVICE - The invention relates to a layered structure ( | 05-16-2013 |
| 20130119890 | Dimming drive method, device and dimmable light - A method for driving light adjustments, a device therefor and a light adjustable lamp thereof are disclosed. The method includes: connecting a light source driving circuit which supplies a light source and an MCU with electricity and then the light source driving circuit driving the light source to vary brightness; after disconnecting the light source driving circuit, a temporary power supplying circuit continuing to power the MCU; when the light source is varying brightness and at an instant of disconnecting the light source driving circuit, the MCU obtaining a brightness state of the light source and storing information about the brightness state; after the temporary power supplying circuit is drained, the information vanishing; if the light source driving circuit is connected before the vanishing, the light source working constantly according to the information; and if the light source driving circuit is connected after the vanishing, the light source varying brightness. | 05-16-2013 |
| 20130134898 | Light Emitting Diode Producing Any Desired Color - A light emitting diode (LED), wherein the LED comprises a plurality of active regions, each of the plurality of active regions of the LED configured to produce a distinct emission falling within a primary wavelength range, the LED further configured to control the intensity of the distinct emission from each of the plurality of active regions thereby producing an output emission in a wavelength range of any desired color. | 05-30-2013 |
| 20130134899 | METHOD FOR OPERATING A HIGH-PRESSURE DISCHARGE LAMP OUTSIDE THE NOMINAL POWER RANGE THEREOF - A method for operating a high-pressure discharge lamp outside the nominal power range thereof is provided. The method may include: providing the high-pressure discharge lamp; and varying relative to operation at nominal power, one of at a lamp power of less than 85% of the nominal power and at a lamp power of greater than 110% of the nominal power at least one or more of the following parameters: lamp frequency, lamp current in a commutation pulse, length of the commutation pulse, and the commutation pattern. | 05-30-2013 |
| 20130141006 | Constant Current DC-DC Converter - A device includes a positive power supply voltage node; and a first operational amplifier including a first input, a second input, and an output coupled to the second input. The device further includes a first resistor coupled between the second input of the first operational amplifier and the positive power supply voltage node; a second resistor coupled between the output of the first operational amplifier and an electrical ground, and is configured to receive a same current flowing through the first resistor; a second operational amplifier including a first input coupled to the second resistor, and an output coupled to an output node; and a third resistor coupled between the electrical ground and a second input of the second operational amplifier. | 06-06-2013 |
| 20130141007 | MODULAR LED POWER SYSTEM WITH CONFIGURABLE CONTROL INTERFACE - A modular system and method for providing power for LED lighting systems. The power source unit comprises (1) a power supply that converts A/C voltage to regulated D/C voltage, (2) a configurable intelligent gateway module that receives the regulated D/C voltage and places it on a power bus to which one or more power node modules and any accessories in need of power, such as motion detectors or cooling units, are coupled, and (3) an intelligent power node module that converts the regulated D/C voltage to a regulated D/C current and provides it to the particular LED Light Module (LLM), and which also receives data from the LLM, such as temperature data, and adjusts the regulated current accordingly. The gateway module also may receive control data from control devices, such as dimmers or wireless controllers, and instruct the power node module to regulate its output current accordingly. | 06-06-2013 |
| 20130141008 | LED DRIVING DEVICE AND METHOD THEREOF - An LED driving device and its method are suitable for driving and regulating an illumination brightness of at least one LED. After switching the phase angle of an alternating voltage through a regulation circuit, an integration circuit and a filter circuit are utilized to generate a stable constant voltage. Next, the magnitude of the constant voltage is regulated in stage through a driving circuit based upon a control signal of a control circuit, and the voltage is converted into a constant current for driving the LED. Accordingly, the invention utilizes the constant current with stage variation to achieve the effect of linear dimming to prevent flickering. | 06-06-2013 |
| 20130162169 | LIGHT DRIVING SYSTEM AND METHOD - A light driving system is provided that includes a light dimmer that receives an AC input signal and provides a dimmer output signal that includes a fast rising leading edge, a rectifier that receives the dimmer output signal and provide a rectified dimmer output signal and an AC/DC converter that filters the rectified dimmer output signal to provide a DC input signal that is employed to drive a light. The light driving system also comprises a protection circuit that limits current to the AC/DC converter during the fast rising leading edge of the dimmer output signal. | 06-27-2013 |
| 20130162170 | Stage Lighting Device With a Controlling Computer and a Separate Offline Computer - a lighting device or lighting associated device which includes an off-line computer in addition to the controlling computer. The off-line computer is one that uses less power, but is accessible wirelessly even when the light is off-line and not receiving power. The off-line computer can be used to update the program and/or media that is stored in the lighting device. | 06-27-2013 |
| 20130162171 | STEP UP/DOWN CONVERTER - Provided is a step up/down converter, in which the inductor current can be easily detected by a simple configuration in any connecting mode of the switches. This comprises a first switch, one end of which is connected to an input power source, and the other end of which is connected to one end of the inductor, a second switch, one end of which is connected to the one end of the inductor, and the other end of which is connected to a reference potential applying unit, a third switch and a fourth switch, one end of which is connected to the other end of the inductor; a capacitor circuit element, connected between the other end of the third switch and the other end of the fourth switch, and configured to generate an output voltage for applying to a load, a detecting resistor, connected between the other end of the second switch and the other end of the third switch, and configured to detect an inductor current flowing through the inductor, and a control circuit configured to perform control from the first switch to the fourth switch based on the inductor current detected by the detecting resistor. | 06-27-2013 |
| 20130175944 | DETECTION OF THE POSITION OF AN ELV DIMMER FOR CONTROLLING OPERATION OF AN ISOLATED ELECTRICAL LOAD - A system and process for controlling power delivered to an electrical load, such as lighting system, to controllably effect operation of the load (e.g., intensity of illumination). In at least some embodiments, the system and process interpret a user-adjustable setting of a typical electronic low voltage (ELV) dimmer control device that is otherwise isolated from facility AC power. An electrical stimulus, such as a relatively low power AC or DC voltage, is applied at one or more externally accessible terminals of the ELV dimmer control. An electrical response of the dimmer control to the stimulus is measured at one or more externally accessible terminals of the dimmer control. The electrical response varies according to the applied electrical stimulus and a user-adjustable setting of the dimmer control. An indication of the setting of the user-adjustable control is determined from the measured electrical response, and used to correspondingly dim a lighting source. | 07-11-2013 |
| 20130175945 | CIRCUIT AND METHOD FOR PREHEATING FILAMENTS AND BALLAST - A circuit for preheating filaments may include: a transistor; a first winding, one terminal of which being electrically connected with a collector of the transistor, and the other terminal being connected to an input of a power source; a second winding, one terminal of which being electrically connected with an emitter of the transistor, the other terminal being electrically connected with a base of the transistor, and the second winding being coupled with the first winding in a self-excitation mode; one or more load windings respectively connected with the filaments in series, and each of which being coupled with the first winding in a flyback mode; and a delay switch, configured to change into an on state from an off state when a trigger signal with a predetermined delay is received, so as to turn off the transistor. | 07-11-2013 |
| 20130193871 | Large Area Light Emitting Device Comprising Organic Light Emitting Diodes - The invention relates to an organic light emitting device having an electrode, a counter electrode, at least one light emitting region that includes a stack of organic layers between the electrode and the counter electrode, which stack of organic layers is provided between a metal substrate and a transparent encapsulation, a current supply layer, electrically connected to the electrode or the counter-electrode, the current supply layer being partially provided overlapping an electric insulating layer provided in direct contact with the metal substrate, and at least one electrical feedthrough through the metal substrate and through the electric insulating layer, which electrical feedthrough provides an electrical connection to the current supply layer and is electrically isolated from the metal substrate. | 08-01-2013 |
| 20130214696 | Light-Emitting Diode with Adjustable Light Beams and Method for Controlling the Same - A light-emitting diode with adjustable light beams and a method for controlling the same. The light-emitting diode includes a substrate, multiple dies on the substrate, a primary optical lens over the substrate, wherein a portion of the dies being designated as belonging to a first group of dies and another portion of the dies being designated as belonging to a second group of dies, the primary optical lens covers the dies, and a controlling unit selectively drives the first or the second group to emit light, wherein a light beam formed by light that is emitted by the first group and passes through the primary optical lens has a different shape or projection angle from a light beam formed by light that is emitted by the second group and passes through the primary optical lens. | 08-22-2013 |
| 20130214697 | POWER CONTROL SYSTEM FOR AN ILLUMINATION SYSTEM - A power control system for an illumination system has a power source to supply any one of a range of AC or DC voltages, a power conversion stage, one or more light emitting device(s) for illumination and/or wireless communication, a controller controlling an output stage to receive and send information to regulate the power and/or current to the light emitting device(s), and a programmable voltage clamping or linear regulator arrangement contained within the output stage that can be controlled to increase a dynamic dimming ratio of current and/or power through the light emitting device(s) and to enable power or current modulation for wireless optical communication of light emitting device(s). The power control system enables current and power to be provided to one or more attached light emitting device(s) with a vastly extended dynamic dimming range such that different light emitting devices can be powered using the same driver output stage(s). | 08-22-2013 |
| 20130229130 | POWER CONVERTER AND ILLUMINATION DEVICE USING THE POWER CONVERTER - A power converter includes a mounting substrate, a one-piece-type connector including an input connector and an output connector, the input connector and the output connector being formed in one-piece and arranged side by side; and a case made of an electrically conductive material. The one-piece-type connector includes lead terminals configured to connect the input cable and the output cable to a power converting circuit and an electrically conductive ground connection portion electrically connected to the case through an electrically conductive member. The ground connection portion includes a shield surface arranged to extend along at least a portion of a side surface of the output connector. | 09-05-2013 |
| 20130241435 | LIGHTING DEVICES UTILIZING OPTICAL WAVEGUIDES AND REMOTE LIGHT CONVERTERS, AND RELATED METHODS - A lighting device ( | 09-19-2013 |
| 20130249432 | Wireless Adaptation of Lighting Power Supply - Methods, systems, and apparatus, for wirelessly controlling a power supply device that controls a load. A wireless adapter includes a wireless communication device that receives transmissions from a wireless controller, a serial interface for a serial data connection to a power supply processing device integrated in the power supply device, an adapter processing device that receives the control signals the wireless communication device outputs, generates the control commands from the control signals, and outputs the control commands to the serial interface to cause the power supply processing device to control power provided to the load in a manner specified by the control commands, and an adapter power circuit that receives regulated direct current (DC) power from the power supply device and is powered from the regulated DC power received, and provides power to the wireless communication device and the adapter processing device. | 09-26-2013 |
| 20130264965 | OMNI VOLTAGE DIRECT CURRENT POWER SUPPLY - A battery operated LED lighting apparatus including: a battery outputting a battery voltage; a light emitting diode or array of light emitting diodes; and a power supply including a boost regulating circuit. The power supply being in communication with the battery and the light emitting diodes such that a constant voltage or constant current is supplied to the light emitting diodes as the battery discharges and the battery voltage falls below the output voltage. In a preferred embodiment the power supply further includes a buck regulator to maintain the proper output voltage when the battery voltage is greater than the output voltage. | 10-10-2013 |
| 20130271028 | SYSTEMS AND APPARATUSES INCLUDING ALTERABLE CHARACTERISTICS AND METHODS OF ALTERING AND COORDINATING SUCH CHARACTERISTICS - Systems, apparatuses, and methods are provided that include alterable characteristics and such alterable characteristics may be coordinated. Such systems, apparatuses, and methods may include wearable apparatuses and such alterable characteristics may relate to illumination conditions. In one example, a wearable apparatus includes an illumination device that may be manually manipulated between two different illumination conditions. In another example, two wearable apparatuses may each include an illumination device and operation of the two illumination devices may be coordinated. In a further example, operation of an apparatus may be controlled by a third party or venue. Still another exemplary system may include a capturing device for capturing a characteristic of an object and controlling an output device of an apparatus to operate with the same characteristic as the captured characteristic. | 10-17-2013 |
| 20130293141 | PORTABLE DEVICE AND METHOD FOR PRODUCT LIGHTING CONTROL, PRODUCT DISPLAY LIGHTING METHOD AND SYSTEM, METHOD FOR CONTROLLING PRODUCT LIGHTING, AND -METHOD FOR SETTING PRODUCT DISPLAY LOCATION LIGHTING - A portable device and method for the setting and control of lighting of product display locations of a product display apparatus is provided. Product lighting settings are selected or predetermined for a product or products. At least one image representative of a product and a product display apparatus planogram are displayed on a display of the portable device. The planogram is comprised of at least one product display location image associated with a product display location of the product display apparatus. Each product display location has at least one light source. The portable device facilitates association of a product with a product display location via transfer of the product image onto a product display location of the planogram, thereby linking product lighting settings to the product display location, causing the product lighting to be adjusted to conform to the product lighting settings. Furthermore, a product display lighting method and system, and a method for controlling product lighting are provided. | 11-07-2013 |
| 20130300313 | DISPLAY DEVICE AND ELECTRONIC DEVICE - A display device has an NTSC ratio of higher than or equal to 80% and a contrast ratio of higher than or equal to 500 and includes a display portion. In the display portion, pixels are provided at a resolution of greater than or equal to 80 ppi, and the pixels each includes a light-emitting module capable of emitting light with a spectral line half-width of less than or equal to 60 nm in a response time of shorter than or equal to 100 μs. Further, transient characteristics of the emission intensity of the light-emitting module have a projecting portion higher than other portions in a portion rising in response to an input signal. | 11-14-2013 |
| 20130300314 | Setting up hybrid coded-light - ZigBee lighting system - A lighting system ( | 11-14-2013 |
| 20130307436 | METHOD FOR IMPROVING OPERATION LIFETIME OF CAPACITOR, CAPACITOR CONTROL CIRCUIT STRUCTURE AND USE THEREOF - The invention provides a method for improving operation lifetime of a capacitor module in an electronic circuit employing the capacitor module, comprising the steps of providing two or more capacitor modules of same configuration; and controlling alternately a respective one of the capacitor modules to operate in the electronic circuit for a first predetermined period of time. The invention also relates to a capacitor control circuit structure for use in a location of an electronic circuit previously occupied by an original capacitor module, and the capacitor control circuit structure exhibits the extended operation lifetime with respect to the original capacitor module. The invention also relates to the use of the capacitor control circuit structure in the electronic applications. | 11-21-2013 |
| 20130313996 | High Current Switching Converter for LED Applications - A step-up switching voltage regulator includes two or more inductors and a switching network. A control circuit drives the switching network in a repeating sequence that includes: a magnetizing phase where the inductors are connected in series between an input voltage and ground; and a charge transfer phase where the inductors are connected in parallel to provide current to an output node with at least one of the inductors is connected between ground and the output node. | 11-28-2013 |
| 20130313997 | HIGH EFFICACY LIGHTING SIGNAL CONVERTER AND ASSOCIATED METHODS - A signal adapting chromacity system to control that may include a signal conversion engine to receive a source signal designating a color of light defined by a two spatial plus luminance dimensional color space, such as the xxY color space. The signal conversion engine may convert the source signal to a three dimensional color space defined within a subset gamut of a full color gamut, such as an RGW, RBW, or GBW color space. The subset gamut may include a first color light, a second color light and a high efficacy light. The signal conversion engine may perform a conversion operation to convert the source signal to an output signal, using the output signal to drive light emitting diodes (LEDs). The conversion operation may be a matrix, angular or linear conversion operation. | 11-28-2013 |
| 20130313998 | TWO-WIRE DIMMER SWITCH FOR LOW-POWER LOADS - A two-wire load control device (such as, a dimmer switch) for controlling the amount of power delivered from an AC power source to an electrical load (such as, a high-efficiency lighting load) includes a thyristor coupled between the source and the load, a gate coupling circuit coupled between a first main load terminal and the gate of the thyristor, and a control circuit coupled to a control input of the gate coupling circuit. The control circuit generates a drive voltage for causing the gate coupling circuit to conduct a gate current to thus render the thyristor conductive at a firing time during a half cycle of the AC power source, and to allow the gate coupling circuit to conduct the gate current at any time from the firing time through approximately the remainder of the half cycle, where the gate coupling circuit conducts approximately no net average current to render and maintain the thyristor conductive. | 11-28-2013 |
| 20130320878 | SWITCHING MODULE OF ADJUSTING A VISUAL ANGLE AND RELATED BACKLIGHT SYSTEM - A switching module capable of adjusting a visual angle is disclosed. The switching module includes an edge-type optical substrate, a light source disposed by a side of the edge-type optical substrate, and an optical modulating component disposed between the light source and the edge-type optical substrate. The edge-type optical substrate has an emitting surface. The light source includes a plurality of light units. Each light unit can emit a beam to the edge-type optical substrate according to a predetermined angle. The optical modulating component can modulate divergence of the beam emitted from the light unit, so that the beam can be guided out of the edge-type optical substrate via the emitting surface according to the predetermined angle. | 12-05-2013 |
| 20130320879 | Light Emitting Device - A light emitting device includes a main body that defines an inner space therein and that includes a light-transmissive part, a light emitting unit disposed in the inner space, and an electrode. The electrode has a device-connecting portion electrically connected to and extending from the light emitting unit, a power-connecting portion disposed outwardly of the main body and electrically connected to an electric power source, and a resistance-configurable portion that extends between and that interconnects electrically the device-connecting portion and the power-connecting portion and that is configurable to set resistance of the electrode. | 12-05-2013 |
| 20130328499 | Method of Driving Display Device - An active matrix type EL display device is provided, which is capable of suppressing the unevenness of luminance display due to the unevenness of the characteristics of TFTs which constitute pixels, or due to variations in the environmental temperature at which the display device is used. The active matrix type EL display is driven by a time gray scale method, and is capable of keeping the drain current of each of its EL driving TFTs constant by operating each of the EL driving TFTs in a saturation region in an ON state. Accordingly, constant current can be made to flow in each of the EL elements, whereby it is possible to provide an active matrix type EL display device with accurate gray scale display and high image quality. | 12-12-2013 |
| 20130334981 | DISPLAY DEVICE - A display device includes: a flexible display panel having a display area variably exposed in a first direction and including a conductive pattern; a sensing pattern positioned to correspond to the conductive pattern in the first direction; and a controller sensing a current flowing to one of the conductive pattern and the sensing pattern to display an image corresponding to the display area of the flexible display panel in the flexible display panel. | 12-19-2013 |
| 20130334982 | METHOD FOR GUIDING CURRENT IN A LIGHT EMITTING DIODE (LED) DEVICE - Methods for controlling current flow in semiconductor devices, such as LEDs are provided. For some embodiments, a current-guiding structure may be provided including adjacent high and low contact areas. For some embodiments, a second current path (in addition to a current path between an n-contact pad and a substrate) may be provided. For some embodiments, both a current-guiding structure and second current path may be provided. | 12-19-2013 |
| 20130342130 | LIGHTING SYSTEM WITH LIGHTING DIMMER OUTPUT MAPPING - A system and method map dimming levels of a lighting dimmer to light source control signals using a predetermined lighting output function. The dimmer generates a dimmer output signal value. At any particular period of time, the dimmer output signal value represents one of multiple dimming levels. In at least one embodiment, the lighting output function maps the dimmer output signal value to a dimming value different than the dimming level represented by the dimmer output signal value. The lighting output function converts a dimmer output signal values corresponding to measured light levels to perception based light levels. A light source driver operates a light source in accordance with the predetermined lighting output function. The system and method can include a filter to modify at least a set of the dimmer output signal values prior to mapping the dimmer output signal values to a new dimming level. | 12-26-2013 |
| 20140001977 | Load Control System Having Independently-Controlled Units Responsive To A Broadcast Controller | 01-02-2014 |
| 20140021883 | POWER LIGHT EMITTING DIODE AND METHOD WITH CURRENT DENSITY OPERATION - A light emitting diode device emitting at a wavelength of 390-415 nm has a bulk gallium and nitrogen containing substrate with an active region. The device has a current density of greater than about 175 Amps/cm | 01-23-2014 |
| 20140028215 | SWITCH - The invention comprises a switch suitable for forwarding at least two functions to a lighting system. | 01-30-2014 |
| 20140035481 | System And Method For Providing Both Power And Control To Circuits Coupled Serially To A Single Conductor - To power and control multiple different electronic circuit nodes, this document introduces a single-wire multiple-circuit power and control system. Specifically, individually controlled circuit node units are arranged in a series configuration that is driven by a power and control unit located at the head of the series. | 02-06-2014 |
| 20140042927 | BIT PACKER FOR CONTROL SIGNALS - Representative implementations of devices and techniques provide a bit packing arrangement for a control signal. The control signal is received as a bit stream having a first rate of change. A packed control signal having a varying rate of change may be generated based on the bit stream. The average rate of change of the packed control signal is less than the first rate of change. | 02-13-2014 |
| 20140042928 | LIGHT-EMITTING DEVICE - A light-emitting device includes a plurality of organic EL elements including first electrodes, a second electrode, and organic compound layers therebetween, pixel circuits connected to the corresponding first electrodes, and a common power supply connected to the second electrode, in which at least a part of the organic compound layers is formed to extend from over the plurality of first electrodes to gap areas between the first electrodes, and a resistance between two adjacent first electrodes is less than a resistance between one of the first electrodes and the second electrode. Each of the organic EL elements receives an intermittent supply of a current from the corresponding pixel circuit, and during a period in which the current is stopped, a voltage equal to or less than a light emission threshold value is applied to the organic EL element. | 02-13-2014 |
| 20140042929 | Audio Controlled Power Supplying System - An audio controlled power supplying system is disclosed, the audio controlled power supplying system comprises an audio input unit receiving an audio signal from an audio source, a processor electrically coupled to the audio input unit, the processor receives the audio signal and analyzes the audio signal to generate a control signal; and a power regulator electrically coupled to the processor, the power regulator receives the control signal from the processor and regulates an input power signal of a power source according to the control signal to generate a output power signal. | 02-13-2014 |
| 20140049187 | SYSTEM FOR MANUFACTURING POWER SUPPLY UNIT AND METHOD FOR MANUFACTURING SUPPLY UNIT, AND FLICKER MEASUREMENT APPARATUS - A method of manufacturing a power supply unit (PSU) is provided. The method includes providing at least one PSU supplying a dimming signal to at least one light source, performing a first test for electrical characteristics of the at least one PSU, detecting light emitted from the at least one light source, measuring a flicker of the at least one light source, and performing a second test for a state of the at least one PSU based on a flicker measurement result, and packing a PSU determined to be in a normal state among the at least one PSU, as a result of the first test and the second test. | 02-20-2014 |
| 20140055056 | TECHNOLOGY TO DESENSITIZE LED LAMPS AGAINST POWER RIPPLES - An LED lamp having an operating voltage range within which if the supply voltage is provided within the operating voltage range, the LED lamp produces light in a designed light range, and which has reduced sensitization to ripples. The LED lamp includes a network of passive elements that are structured such that the I-V characteristic curve has a plateau region within the operating voltage range. For instance, a maximum slope of an I-V characteristic curve of the network is shallower within the operating voltage range than the maximum slope of an I-V characteristic curve of the network below the operating voltage range. | 02-27-2014 |
| 20140062333 | LED DRIVE CIRCUIT - In aspects of the invention, a flyback converter configuration LED drive circuit, by adopting a configuration such that anode voltages of LEDs smoothed by a smoothing capacitor on the secondary side of a transformer and a terminal of a drive IC circuit are used as a node common. Current can be supplied to the primary side of the smoothing capacitor by a start-up circuit when starting, the need for an auxiliary winding, smoothing capacitor, and rectifier diode which have heretofore been necessary to supply a power source to the drive IC circuit is eliminated. Consequently, the number of parts can be reduced, meaning that the configuration of the LED drive circuit becomes simple, thus enabling a reduction in size and cost of the LED drive circuit. | 03-06-2014 |
| 20140070723 | LED Backlight Driving Circuit and LED Backlight Driving Method - The present invention provides an LED backlight driving circuit and an LED backlight driving method. The circuit includes an isolation MOS transistor, a dimming MOS transistor connected in parallel to the isolation MOS transistor, and first and second resistors. The first resistor and the second resistor are connected to each other in parallel and are connected between the dimming MOS transistor and a ground wire. The isolation MOS transistor and the dimming MOS transistor are arranged for electrical connection with an LED light. The LED backlight driving circuit arranges the isolation MOS transistor and the dimming MOS transistor to connect in parallel to each other so as to make the electrical current flowing through the isolation MOS transistor lessened to reduce the amount of heat emitting therefrom and enhance operation safety and also allow the MOS transistor used to be of a downgraded specification to lower down the manufacture cost. | 03-13-2014 |
| 20140070724 | Recessed Luminaire - Embodiments of the invention are directed to wall recessed two-component luminaires. The two components can include a primary optical subsystem and a secondary optical subsystem. The primary optical subsystem can provide indirect lighting, illuminate an architectural space upward toward a ceiling, and/or have greater luminous flux than the secondary optical subsystem. The secondary optical subsystem can provide direct lighting, illuminate an architectural space horizontally and/or downward, provide lit appearance, provide direct view color and/or color gradients, provide direct view luminance and/or luminous gradients, and/or provide lighting for ambience. | 03-13-2014 |
| 20140070725 | PIXEL CIRCUIT AND DRIVING METHOD THEREOF - It discloses a pixel circuit and a driving method thereof. The pixel circuit includes a light-emitting device (OLED), a driving transistor (DTFT), a storage capacitor (Cst), a first switching transistor (T | 03-13-2014 |
| 20140084808 | MOUNTED LIGHTING SYSTEMS AND METHODS - In one exemplary embodiment, a mounted lighting system may be described. The mounted lighting system may include a central processing module electrically and/or communicatively coupled to at least one light army, and electrically and/or communicatively coupled to a control module. The control module may receive remote signals that activate and provide a visual pattern amongst the lights on the light array. | 03-27-2014 |
| 20140091730 | Dual-Mode Dimmable Receptacle - An electric receptacle capable of operating in a dimmable mode and a standard mode comprises an opening for receipt of an adapter. The adapter is received by the electric receptacle and switches the electric receptacle from the standard mode to the dimmable mode. The adapter is dimensioned to fit over a standard plug and the electric receptacle is configured to receive a standard plug. | 04-03-2014 |
| 20140097767 | REMOTELY CONTROLLED SMART LIGHTING SYSTEM - The disclosure provides a smart lighting system. The smart lighting system includes a lighting apparatus, a controller, and a remote control. The lighting apparatus is coupled to the controller and a power supply. The controller is connected to the remote control via a communication interface. The controller includes a user identification device (UID), a encryption system, and a dimmer. Via the encryption system, the UID is adapted to authenticate the signals transmitted from the remote control, and the dimmer modifies electrical currents from the power supply for the lighting apparatus according to the signal. The brightness of the lighting apparatus is thus modulated by the remote control. | 04-10-2014 |
| 20140103833 | ORGANIC LIGHT EMITTING DEVICE AND LIGHT ADJUSTING METHOD THEREOF - An organic light emitting device includes, a first organic light emitting diode unit, a second light emitting diode unit, and an optical component. The first organic light emitting diode unit is connected with the second organic light emitting diode unit, and an internal angle is formed between the two organic light emitting diode units. The first organic light emitting diode unit, the second organic light emitting diode unit, and the optical component are connected together to form a triangle structure. A first light emitting region of the first organic light emitting diode unit and a second light emitting region of the second organic light emitting diode unit are overlapped on the optical component and forming a third light emitting region. A uniform light can be obtained by adjusting the first organic light emitting diode unit and the second organic light emitting diode unit respectively. | 04-17-2014 |
| 20140103834 | DEVICE FOR CONTROLLING A LIGHTING DEVICE - A device is provided for controlling an illumination device ( | 04-17-2014 |
| 20140111112 | LED FLUORESCENT LAMP - A light-emitting diode (LED) lamp which can replace a typical fluorescent lamp is provided. The LED lamp comprises external connection pins connected to terminals of an electronic or magnetic fluorescent lamp ballast, capacitors connected to each of the external connection pins, diodes connected to each of the capacitors and a LED array connected between the diodes, wherein an first external connection pin, a first capacitor, a first diode, an LED array, a second diode, a second capacitor and a second external connection pin are connected in series. The LED lamp also further comprises a diode connected in anti-parallel with a series circuit of the second diode and the LED array, and another diode connected in anti-parallel with a series circuit of the first diode and the LED array. | 04-24-2014 |
| 20140117874 | Power Supply Device and Luminaire - According to one embodiment, a control unit subjects a light-emitting element to constant current control in a dimming degree region shallower than a dimming degree set in advance and subjects the light-emitting element to constant voltage control or constant power control in a dimming degree region deeper than the dimming degree set in advance. When a dimming signal having a deepest dimming degree equivalent to extinction of the light-emitting element is input in a lighting state of the light-emitting element, the control unit gradually reduces an optical output of the light-emitting element from an immediately preceding dimming degree to extinguish the light-emitting element. | 05-01-2014 |
| 20140117875 | SYSTEMS AND METHODS TO WIRELESSLY CONTROL ILLUMINATION CHARACTERISTICS OF WEARABLE ITEMS - Systems, apparatuses, and methods are provided that include wireless control of output characteristics. Such systems, apparatuses, and methods may include wearable items and such controllable output characteristics may relate to illumination characteristics. In one example, a wearable item includes a receiver, a power source, an illumination device adapted to illuminate a first color and a second color different than the first color, and a processor in communication with the receiver, the power source, and the illumination device. The receiver is adapted to receive a signal and communicate the signal to the processor. The processor is configured to illuminate the illumination device in one of the first color and the second color based on the signal received by the receiver. | 05-01-2014 |
| 20140117876 | DIMMABLE TORCH - The disclosure provides a dimmable torch, in order to overcome the insufficiency of the dimming control function of the torch in the prior art. The torch comprises a lamp holder ( | 05-01-2014 |
| 20140132178 | Light Emitting Diode Module - A light emitting diode module includes a circuit board, a light-emitting-diode (LED) unit, a light-adjusting unit and a conductive trace. The LED unit is directly mounted on the circuit board. The light-adjusting unit is directly mounted on the circuit board at a position distinct from a mounting portion of the LED unit on the circuit board, and is operable to adjust electric current flowing through the LED unit. The conductive trace is disposed on the circuit board for electrically connecting the LED unit to the light-adjusting unit. | 05-15-2014 |
| 20140132179 | SWITCHED MODE POWER SUPPLY - The present application relates to switched mode power supplies and provides a method of control in which control is effected at the midpoint of the period in which the input switch is conducting. | 05-15-2014 |
| 20140139133 | LED ILLUMINATING METHOD AND APPARATUS FOR IMAGE MEASURING DEVICE - In an image measuring device that performs, on a work piece to be measured, low brightness continuous illumination and one of stroboscopic illumination and continuous illumination with high brightness, a common high-brightness LED is used, and driving circuits are switched between pseudo-continuous illumination and one of stroboscopic illumination and continuous illumination. In the pseudo-continuous illumination, an average brightness is reduced by pulse lighting. In the stroboscopic illumination, high brightness light is emitted instantaneously. The switching between the pseudo-continuous illumination and one of the stroboscopic illumination and continuous illumination may be performed by changing a lighting cycle of the high-brightness LED. | 05-22-2014 |
| 20140139134 | REFERENCE VOLTAGE REGULATING METHOD AND CIRCUIT FOR CONSTANT CURRENT DRIVER - The present invention relates to reference voltage regulating methods and circuits for a constant current driver. In one embodiment, a method can include: setting a reference voltage circuit matching with a current output channel of a constant current source; setting a first resistor of the reference voltage circuit to follow an ideal equivalent resistor of the current output channel, and maintaining a proportion of the first resistor and the ideal equivalent resistor to be no less than a predetermined value M; setting a first current of the reference voltage circuit to follow an ideal output current of the current output channel, and maintaining a proportion of the first current and the ideal output current to be no less than 1/M; and setting a product of the first current and the first resistor to be a reference voltage of the reference voltage circuit. | 05-22-2014 |
| 20140145641 | Single Wire Signal Process Method and Circuit - A signal processing method for a single wire, includes receiving an input signal via the single wire, wherein the input signal includes a plurality of pulse signals; generating a plurality of bits corresponding to the plurality of pulse signals according to a plurality of widths of the plurality of pulse signals and forming a source code; and decoding the source code to generate a control code; wherein when a width of a first pulse signal of the plurality of pulse signals is smaller than a first duration, a first bit corresponding to the first pulse signal is a first bit value and when a width of a second pulse signal of the plurality of pulse signals is greater than a second duration, a second bit corresponding to the second pulse signal is a second bit value. | 05-29-2014 |
| 20140145642 | SYSTEM AND METHOD FOR IGNITION AND OPERATION OF A HIGH INTENSITY DISCHARGE LAMP - A method for ignition of a ceramic high intensity discharge (HID) lamp. The method includes applying to the electrodes multiple pre-ignition voltage pulses of sufficiently short duration to avoid igniting the HID lamp. The pre-ignition voltage pulses heat the electrodes prior to ignition to avoid arcing in the bores of the capillaries surrounding the electrodes. The ignition circuit is configured subsequent to application of the pre-ignition voltage pulses to apply an ignition pulse to ignite the HID lamp. | 05-29-2014 |
| 20140176006 | DISPLAY PANEL - An EL light-emitting element is driven digitally to reduce power consumption using a pixel having three transistors and two capacitors. A reset transistor for diode connection writes the threshold voltage of the drive transistor onto a coupling capacitor. The data voltage plus threshold voltage is then written onto the gate of the drive transistor. This reduces the amplitude of the data voltage required, further reducing power consumption. | 06-26-2014 |
| 20140176007 | LIGHT EMITTING APPARATUS FOR METHOD OF MANUFACTURING AND USING THE SAME - An apparatus includes a load circuit operatively coupled to a controller circuit through a drive circuit. The drive circuit provides a drive signal to the load circuit in response to receiving a digital indication from the controller circuit. The load circuit includes first and second light emitting sub-circuits connected in parallel. The first and second light emitting sub-circuits provide first and second spectrums of light, respectively. | 06-26-2014 |
| 20140176008 | SYSTEM AND METHOD FOR IMPLEMENTING MAINS-SIGNAL-BASED DIMMING OF SOLID STATE LIGHTING MODULE - A system for implementing mains-voltage-based dimming of a solid state lighting module includes a transformer, a mains sensing circuit and a processing circuit. The transformer includes a primary side connected to a primary side circuit and a secondary side connected to a secondary side circuit, the primary and second side circuits being separated by an isolation barrier. The mains sensing circuit receives a rectified mains voltage from the primary side circuit and generates a mains sense signal indicating amplitude of the rectified mains voltage. The processing circuit receives the mains sense signal from the mains sensing circuit across the isolation barrier, and outputs a dimming reference signal to the secondary side circuit in response to the mains sense signal. Light output by the solid state lighting module, connected to the secondary side circuit, is adjusted in response to the dimming reference signal output by the processing circuit. | 06-26-2014 |
| 20140184091 | DC Boost Topology Circuit for Backlight Driving - The present invention provides a DC boost topology circuit for backlight driving, which includes a coupling inductor including a primary coil having an end connected to a DC voltage input terminal and an opposite end connected to a secondary coil and a field-effect transistor that has an end grounded. An energy storage module includes a first capacitor and a first diode. The secondary coil has an end connected to the first capacitor and an opposite end connected to an opposite end of the primary coil and the first diode of which an opposite end connected to an opposite end of the first capacitor. A circuit protection unit has an end connected to a common terminal of the first diode and the first capacitor and an opposite end connected to a DC voltage output terminal. The topology circuit has an output voltage that is multiple times of that of known circuits. | 07-03-2014 |
| 20140184092 | FIELD EMISSION CATHODE DEVICE AND DRIVING METHOD - A driving method includes providing a field emission cathode device. The field emission cathode device includes a cathode electrode, an electron emission layer electrically connected to the cathode electrode, a first gate electrode spaced from the cathode electrode by a first dielectric layer, and a second grid electrode spaced from the first gate electrode by a second dielectric layer. The second dielectric layer has a second opening. A first voltage is supplied to the cathode electrode, a second voltage is supplied to the first gate electrode, and a third voltage is supplied to the second grid electrode, to extract electrons from the electron emission layer to a space formed by the second opening, until the electrons of the space saturate. The third voltage is greater than the second voltage, such that the electrons of the space are emitted through the second grid electrode. | 07-03-2014 |
| 20140184093 | SINGLE STAGE FORWARD-FLYBACK CONVERTER AND POWER SUPPLY APPARATUS FOR LIGHT EMITTING DIODE - There is provided a single stage forward-flyback converter including a power converting unit switching input power to perform a forward power conversion operation while being switched on and perform a flyback power conversion operation while being switched off, a path providing unit clamping power formed by the forward power conversion operation of the power converting unit and power formed by the flyback power conversion operation thereof to provide power transfer paths, and a controlling unit controlling the power conversion operation of the power converting unit according to a voltage level of the input power. | 07-03-2014 |
| 20140184094 | CONNECTOR POSITION DEVICE - A connector position device includes a light emitting diode (LED) and a switch. The LED is fixed facing a connector of a motherboard. An anode of the LED is connected to a power supply; a cathode of the LED is connected to a south bridge chip. The switch is connected to the south bridge chip to control the south bridge chip to output a high level signal or a low level signal. When the switch is turned on, the south bridge chip outputs a low level signal to the cathode of the LED and the LED is lit. When the switch is turned off, the south bridge chip outputs a high level signal to the cathode of the LED and the LED is turned off. | 07-03-2014 |
| 20140184095 | DC Power-Supply Apparatus - A DC power-supply apparatus of converting an AC input voltage rectified to a DC voltage and supplying it to a load, by performing on-and-off control of a switching element connected in series to a reactor, includes a control circuit, which operates in floating state with respect to a after-rectified ground line and controls an on-width of the switching element based on a value of current flowing through the reactor and the load connected in series with the reactor; and an oscillation circuit, which controls a switching frequency of the on-and-off control by the control circuit, asynchronously with energy release timing of the reactor. | 07-03-2014 |
| 20140203725 | POWER CIRCUIT OF A VACUUM FLUORESCENT DISPLAY HAVING NEITHER TRANSFORMER NOR ELECTROMAGNETIC INTERFERENCE - A power circuit of a vacuum fluorescent display having neither transformer nor electromagnetic interference comprises a DC power supplier that provides a high-voltage power supply and a low-voltage power supply. The high-voltage power supply is connected to an amplifying and doubling circuit that is further connected to a positive pole and a grid of the vacuum florescent display. The low-voltage power supply is connected to a linear amplifying circuit that outputs a sinusoidal wave and connects to a filament of the vacuum fluorescent display, thereby motivating the vacuum fluorescent display of the present invention. Consequently, by means of the sinusoidal wave, the electromagnetic interference is prevented, and the present invention is able to lower the costs of materials, save spaces, and operate without the restriction of the mains electricity. | 07-24-2014 |
| 20140203726 | OSCILLATION CIRCUIT - An oscillation circuit includes: a ramp voltage generating unit configured to generate a ramp voltage; and a clock signal generating unit configured to generate a clock signal. The clock signal generating unit includes: a bias unit configured to apply one of the ramp voltage and a fixed voltage, as a bias voltage, to a resistor; and an oscillator configured to determine an oscillation frequency of the clock signal in response to a bias current flowing through the resistor. | 07-24-2014 |
| 20140217921 | LINEARLY DIMMING CIRCUIT OF LIGHT-EMITTING DEVICE AND METHOD THEREOF - A linearly dimming circuit of a light-emitting device, includes a diming signal processing unit, having a dimming signal input terminal and a current setting output terminal, wherein the dimming signal input terminal receives a luminance percentage setting to set a luminance of the light-emitting device to be a maximal luminance multiplying the luminance percentage setting, the dimming signal processing unit generates a current percentage setting according to the luminance percentage setting, the current setting output terminal outputs a driving current setting which sets the driving current to be a maximal driving current multiplying the current percentage setting; a light-emitting device driver stage, having a current setting input terminal and a driving current output terminal, wherein the current setting input terminal couples to the current setting output terminal and receives the driving current setting, the driving current output terminal outputs the driving current to the light-emitting device. | 08-07-2014 |
| 20140217922 | DIMMABLE LED LAMP - A dimmable LED lamp, which receives power from a DC power source to emit light, includes a main body, a DC/DC converter, and a LED module; wherein the main body is hollow, and includes a conductive portion made of a conductive material, wherein the conductive portion is connected to the DC power source; the DC/DC converter is provided in the main body, and is electrically connected to the conductive portion of the main body to receive a power from at least a DC power source; the DC/DC converter converts a voltage of the power provided by the DC power source into a corresponding current; the LED module is provided on the main body, and is electrically connected to the DC/DC converter to emit light with luminance corresponding to the current received from the DC/DC converter. | 08-07-2014 |
| 20140232290 | MULTI-POWER LEVEL COMPACT FLUORESCENT LAMP ASSEMBLY - Provided is a light assembly including a bulb, a lamp base enclosure having circuitry therein configured to supply power to the bulb, and an integrated and dial electrically coupled to the bulb and the lamp base. The dial is operable for selecting one of a plurality of predetermined power settings for the light assembly prior to installation. | 08-21-2014 |
| 20140232291 | Semiconductor Device - A semiconductor device includes a transistor, a light-emitting element, a first wiring, a driver circuit having a function of controlling the potential of the first wiring, a second wiring, a first switch, a second switch, a third switch, a fourth switch, a first capacitor, and a second capacitor. One of a source and a drain of the transistor is connected to the light-emitting element. With this structure, voltage applied between the source and the gate of the transistor can be corrected in anticipation of variations in threshold voltage, so that the current supplied to the light-emitting element can be corrected. | 08-21-2014 |
| 20140239843 | Programmable Touchscreen Dimmer with Interchangeable Electronic Faceplate - A programmable touchscreen light source dimmer is provided. The present invention comprises a dimmer circuitry housing that fits within a conventional light switch box, a removable faceplate, and optionally a cover that may be affixed over the faceplate. The present invention uses a microcontroller that is able to alter the output signal that is used to control the luminosity of the connected light sources between PWM and reverse phase control so that the type of dimming is ideally suited for the type of light source. The faceplate has a dynamic touchscreen through which users can easily alter the luminosity of connected light sources, program that device to follow preset schedules or respond to external stimuli, or activate various secondary functions. | 08-28-2014 |
| 20140252981 | Utilizing Secondary-Side Conduction Time Parameters of a Switching Power Converter to Provide Energy to a Load - A power distribution system includes controller of a switching power converter to control the switching power converter and determine one or more switching power converter control parameters. In at least one embodiment, the switching power converter utilizes a transformer to transfer energy from a primary-side of the transformer to a secondary-side of the transformer. In at least one embodiment, the switching power converter control parameters includes a secondary-side conduction time delay that represents a time delay between when the primary-side ceases conducting a primary-side current and the secondary-side begins to conduct a secondary-side current. In at least one embodiment, determining and accounting for this secondary-side conduction time delay increases the prediction accuracy of the secondary-side current value and accurate delivery of energy to a load when the controller does not directly sense the secondary-side current provided to the load. | 09-11-2014 |
| 20140252982 | LED-Airfield Light - A method for driving a LED-airfield light by a controller | 09-11-2014 |
| 20140265913 | ELECTRICAL LOAD DRIVING APPARATUS - An electrical load driving apparatus comprising a thyristor circuit arranged to control a transmission of electric power to an electrical load, wherein the thyristor circuit is connected to a conversion module arranged to convert a characteristic of the thyristor circuit to operate with a load characteristic of the electrical load. | 09-18-2014 |
| 20140265914 | LIGHT FIXTURE COLOR ROAMING TECHNIQUES - A method for operating a light fixture in a lighting system includes receiving an instruction. If the instruction includes a broad spectrum signal, the roaming range may be set to a broad spectrum. If the instruction includes a first range signal, roaming range may be set to a first range of the broad spectrum. If the instruction includes a second range signal, roaming range may be set to a second range of the broad spectrum. A light having a spectral peak may be generated, and a wavelength of the spectral peak may be varied within the roaming range. | 09-18-2014 |
| 20140265915 | Thin Film Encapsulation Battery Systems - A battery assembly can be formed on a base layer provided on a substrate, with a thin film battery stack including an anode layer, a cathode layer, and an electrolyte layer between the anode and cathode layers. The thin film battery stack can be encapsulated, and assembled into a battery system with electrical power connections for the anode and cathode layers. | 09-18-2014 |
| 20140265916 | Controlled Electronic System Power Dissipation via an Auxiliary-Power Dissipation Circuit - An electronic system and method include a controller to actively control transfer of excess energy to an auxiliary-winding of an auxiliary power dissipation circuit. The excess energy is a transfer of energy from a primary winding of a switching power converter to the auxiliary-winding of the auxiliary power dissipation circuit. In at least one embodiment, the electronic system is a lighting system that includes a triac-based dimmer. The excess energy is energy drawn through the primary-side winding of the switching power converter to provide operational compatibility between a dimmer through which a power supply provides energy to the switching power converter and a load to which the switching power converter provides energy. | 09-18-2014 |
| 20140265917 | FACILITY LIGHTING CONTROL SYSTEM - A lighting control system for municipalities and recreation departments is disclosed. The lighting system can process payments so that a user can pay for usage of a recreational facility at the time of need. The lighting control system can communicate with remote systems such that only a single cellular connection or broadband connection is required. | 09-18-2014 |
| 20140285107 | LIGHTING REQUIREMENTS GENERATION SYSTEM AND METHOD - An OLN lighting requirements generation system and method including a lighting requirements generation system for an outdoor lighting network (OLN, | 09-25-2014 |
| 20140285108 | LIGHT-EMITTING CONTORL CIRCUIT, LIGHT-EMITTING CONTROL METHOD AND SHIFT REGISTER - A light-emitting control circuit, a light-emitting control method and a shift register. The light-emitting control circuit comprises an inputting terminal (Input), an input sampling unit ( | 09-25-2014 |
| 20140285109 | LIGHT EMITTING DEVICE DRIVER CIRCUIT AND CONTROL CIRCUIT AND CONTROL METHOD THEREOF - The present invention discloses a light emitting device driver circuit and a control circuit and a control method thereof. The light emitting device driver circuit converts an input voltage to an output voltage, and provides an output current to a light emitting device circuit. The present invention detects whether the output voltage exceeds a predetermined level, and if no, the regulation target of the output current is set to a relatively higher current to fast charge an output capacitor; if yes, the output current is regulated to a desired target, wherein the relatively higher current is higher than the desired target. | 09-25-2014 |
| 20140285110 | HIGH-EFFICIENCY BIAS VOLTAGE GENERATING CIRCUIT - Disclosed are bias voltage generating circuits and methods for a switching power supply. In one embodiment, a switching power supply can include: (i) a driver circuit configured to receive a bias voltage, and to drive a switch in a power stage of the switching power supply; (ii) where a ratio of an output voltage of the switching power supply to an expected bias voltage of the driver circuit is configured as a proportionality coefficient; (iii) a bias voltage generating circuit configured to generate the bias voltage for the driver circuit based on a first voltage; and (iv) an H-shaped inductor coupled to an input of the bias voltage generating circuit, where the first voltage is configured to be generated based on a number of turns of the H-shaped inductor and the proportionality coefficient. | 09-25-2014 |
| 20140292221 | LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS - A light-emitting device includes a drive transistor that controls a current to be supplied to a light-emitting element from a power supply line, an element continuity portion that electrically connects the drive transistor with the light-emitting element, an initializing transistor that is turned ON to diode-connect the drive transistor, and a connecting portion that electrically connects the drive transistor with the initializing transistor. The power supply line includes a first portion extending in a predetermined direction. The element continuity portion and the connecting portion are formed from the same layer as that of the power supply line and are located on one side along the width of the first portion across the drive transistor. | 10-02-2014 |
| 20140306618 | WAVE-DRIVEN ELECTRONIC CANDLE - A wave-driven electronic candle includes an illuminator, a power supply for providing the necessary working voltage, a signal receiver, and a controller including a signal amplifier for amplifying a wave signal received by the signal receiver, a signal regulator for selecting a series or part of the waveform from the signal amplified by the signal amplifier, a filter for removing noises from the selected waveform, and an output amplifier for amplifying the filtered waveform signal for output to the illuminator to control the illuminator to flash. | 10-16-2014 |
| 20140306619 | LIGHTING APPARATUS, LIGHTING SYSTEM, AND CONTROL METHOD - A lighting apparatus includes a power supply circuit, a light-emitting unit, a mounting unit, and a lighting-side controller. The light-emitting unit is configured to drive light emission based on a power supply voltage generated by the power supply circuit. The mounting unit is configured to detachably mount an electronic apparatus including an apparatus-side controller and an apparatus function unit controlled by the apparatus-side controller. The lighting-side controller is configured to perform control to supply an operating voltage based on the power supply voltage to the apparatus-side controller of the electronic apparatus mounted to the mounting unit to perform authentication processing with the apparatus-side controller, and perform, based on a result of the authentication processing, control to supply the operating voltage based on the power supply voltage to the apparatus function unit. | 10-16-2014 |
| 20140312801 | Driver Circuit for Electroluminescent Element - A driver circuit for an EL element is proposed. The driver circuit for the EL element includes a first TFT, a second TFT, a third TFT, a storage capacitor, and an EL element. The EL element includes an anode connected to a first supply voltage and a cathode connected to a source of the first TFT. A source of the second TFT is connected to a drain of the first TFT. A source of the third TFT is connected to a drain of the second TFT. A drain of the third TFT is connected to the ground. Brightness of the EL element can be prevented from being lowered due to EL element degradation by adopting the method of such connections. | 10-23-2014 |
| 20140312802 | WIRELESS LIGHTING NETWORK WITH EXTERNAL REMOTE CONTROL - In embodiments of the present invention improved capabilities are described for systems and methods that provide for a power outage lighting management within an environment, comprising a power outage detection device adapted to detect a power outage condition and to wirelessly transmit power outage indication data to a plurality of lighting systems within the environment, where at least one of the plurality of lighting systems include an LED light source that is powered by an internal power source. | 10-23-2014 |
| 20140312803 | CIRCUIT FOR ACTUATING AN ILLUMINATION COMPONENT - A circuit for actuating an illumination component is disclosed. A control voltage for actuating the illumination component can be tapped off at a capacitor which can be charged via a charge current proportional to the voltage at the capacitor. The capacitor can be charged with a substantially exponential voltage profile at the capacitor via a first current mirror. The capacitor can be discharged via a second current mirror, the first current mirror and the second current mirror coupled, and the second current mirror provides, via this coupling, a coupling current which is proportional to a discharge current of the capacitor, and the first current mirror produces the charge current, which is substantially proportional to the coupling current. | 10-23-2014 |
| 20140327374 | Light bulb and florescent tube replacement using FIPEL panels - A lighting device formed of a FIPEL panel driven by electrical connection. For example, a frequency generator can create a frequency that creates a light output having any frequency in the spectrum. The light emitting panel can be flexible, and can be coded along a curved surface, such as the inner surface of a light bulb. | 11-06-2014 |
| 20140333227 | Light Source Module, Light Source Module Driving Circuit and Driving Method - The present invention discloses a light source module, a light source module driving circuit and a driving method. The driving circuit comprises: a power supply, which provides input voltage; a control signal generating circuit, which inputs the input voltage provided from the power supply and outputs an enable signal and a dimming signal; a driving chip, which is connected with the power supply and connected to the enable signal and the dimming signal output from the control signal generating circuit, driving the light source of the light source module according to the enable signal and the dimming signal. Through the above way, the present invention utilizes the input voltage to generate the enable signal and the dimming signal. Therefore, it only needs to provide external input voltage to control the light source module in operation, which makes the control more convenient and reliable. | 11-13-2014 |
| 20140333228 | DIMMER DETECTOR FOR BLEEDER CIRCUIT ACTIVATION - A circuit to be utilized for an LED driver bleeder activation. The circuit comprises a circuit block for timing a duration of any removed portion of a rectified line signal. The input of the circuit to be coupled to receive the phase controlled rectified line signal through a voltage divider. Comparing the divided rectified line signal with a threshold voltage and output a comparison result. A timer coupled to the comparator and responsive to the comparison result to time the duration of the removed portion of the rectified line signal and activate the bleeder activation circuitry to turn on the switching element of the bleeder to sink a controlled current from the input line. | 11-13-2014 |
| 20140339998 | LIGHT EMITTING DIODE MODULE - A light emitting diode module includes a light emitting unit and a light emitting diode circuit. The light emitting diode circuit includes four transistors and a storage capacitor. A first transistor includes a first end for receiving a data signal, and a control end. The storage capacitor has a first end coupled to a second end of the first transistor. A second transistor has a first end coupled to a first voltage source, and a control end. A third transistor has a first end coupled to a second end of the second transistor, and a control end coupled to a second end of the storage capacitor. A fourth transistor has a first end coupled to the second end of the storage capacitor, a control end, and a second end coupled to the second end of the second transistor. | 11-20-2014 |
| 20140354174 | INFRARED EMITTING DIODE DRIVING CIRCUIT AND REMOTE CONTROL - An infrared emitting diode driving circuit includes a first resistor includes a first terminal and a second terminal, a second resistor, and a transistor with the emitter grounded via the second resistor. The circuit further includes an infrared emitting diode with the anode connected to a power source and the cathode connected to the collector of the transistor. A control chip of the circuit turns the transistor on and off. The control chip is connected to a first terminal of the first resistor. The circuit further includes a voltage clamping unit to clamp voltage at the base of the transistor to a fixed value. One end of the voltage clamping unit is connected to the second terminal of the first resistor and the base of the transistor, and another end of the voltage clamping unit is grounded. | 12-04-2014 |
| 20140354175 | HIGH WATT TYPE CERAMIC METAL HALIDE LAMP ILLUMINATION DEVICE - A high watt type ceramic metal halide lamp illumination device is provided. The device comprises: ballast receiving a primary input voltage and outputting a secondary voltage, and a lamp having a plurality of arc tubes electrically connected in series inside an outer bulb. The lamp is lighted by receiving the secondary voltage output from the ballast. The secondary voltage output from the ballast has a waveform that at least satisfies a maximum-value to effective-value ratio (Vmax/Veff) of greater than 2 | 12-04-2014 |
| 20140361706 | Slew Rate Controlled Transistor Driver - A gate driver circuit providing a slew-rate controlled gate control signal while minimizing the stretching of the gate control signal relative to the input control pulse. Control logic effects two threshold voltage levels. When the gate control signal is between the two threshold voltage levels, the slew rate of the gate control signal is controlled such that the gate of the transistor being driven is driven softly. When the gate control signal is less than the first threshold voltage level or greater than the second threshold voltage level, the gate of the transistor being driven is driven hard. In one embodiment, the first and second threshold voltage levels are set such that the on/off threshold of the transistor being driven is between the two threshold voltage levels. Thus the slew rate of the gate control signal is controlled such that the gate of the transistor being driven is driven softly when the transistor being driven is transitioning from off to on, or from on to off, thereby minimizing harmonics. At all other times, the gate control signal rises and falls rapidly so as to minimize the stretching of the gate control signal relative to the input control pulse. | 12-11-2014 |
| 20140361707 | METHOD AND CIRCUIT ARRANGEMENT FOR OPERATING LIGHT-EMITTING MEANS WITH A SUDDEN LOAD VARIATION - An operating circuit for light-emitting means ( | 12-11-2014 |
| 20140361708 | SYSTEM AND DRIVING METHOD FOR LIGHT EMITTING DEVICE DISPLAY - A light emitting device display, its pixel circuit and its driving technique is provided. The pixel includes a light emitting device and a plurality of transistors. A bias current and programming voltage data are provided to the pixel circuit in accordance with a driving scheme so that the current through the driving transistor to the light emitting device is adjusted. | 12-11-2014 |
| 20140368126 | LED LAMP - An LED lamp comprises: a first LED part, a second LED part that is connected to the first LED part in parallel and is configured to emit a light with a color temperature lower than that of a light to be emitted from the first LED part, and an impedance circuit that is connected to the first LED part in parallel while being connected to the second LED part in series. | 12-18-2014 |
| 20140375228 | LIGHTING CONTROL METHOD BY MULTI-TONE MULTI-FREQUENCY SIGNAL AND DEVICE USING THE SAME - The present invention provides a lighting control method by multi-tone multi-frequency signal, which includes: encoding a control signal into a multi-tone multi-frequency signal in a control unit; transmitting the multi-tone multi-frequency signal to a receiving unit; decoding the multi-tone multi-frequency signal to generate a command; and controlling a lighting status of at least one lighting device according to the command. The present invention also provides a device using the aforementioned lighting control method. | 12-25-2014 |
| 20140375229 | SWITCHED-MODE POWER SUPPLY DEVICE AND USE OF SUCH A SWITCHED MODE POWER SUPPLY DEVICE - Switched-mode power supply device having an input for receiving an AC voltage input signal, an output for providing a DC voltage signal and/or a direct-current signal to a downstream consumer, a transformer having a primary winding and a secondary winding, and resonant converter means assigned to the primary side of the transformer, which resonant converter means form an LLC topology with inclusion of the primary winding and can be actuated with a variable-frequency control signal on the primary side by means of a control unit, wherein the control unit, which is realized by means of an integrated and/or programmable circuit component, generates the control signal in reaction to and as a function of a zero-crossing detection signal generated from the AC voltage input signal, a current flowing in the transformer windings, in particular on the secondary side, and a constant and/or predeterminable preset signal for an output current flowing at the output, in such a way that regulating means associated with the control unit regulate the output current to the preset signal, and a phase of an input current flowing in the input is synchronized to the phase of the AC voltage input signal, wherein means for generating a sinusoidal signal profile are associated with the regulating means, which signal profile-generating means are independent of the AC voltage input signal and act independently thereof. | 12-25-2014 |
| 20150008842 | LED-BASED LIGHTING CONTROL NETWORK COMMUNICATION - An LED based illumination device includes a receiver and a transmitter for communications adhering to a lighting control communications protocol and a high speed communications protocol. The LED based illumination device may be part of a lighting control network, wherein the data transmission rate of the high speed communications protocol is more than twice that of the lighting control communications protocol. The lighting control network may be coupled to a digital communications gateway, including a digital communications interface configured to be coupled to a network operating in accordance with an internet protocol and a lighting control network interface coupled to the lighting control network. A processor determines a summary status value of the LED based illumination device based on information stored in memory of the digital communications gateway. The digital communications gateway may periodically transmit the time of day to the LED based illumination device over the lighting control network. | 01-08-2015 |
| 20150008843 | SYSTEMS AND METHODS FOR POWER MANAGEMENT IN A BEACON - A method for power management in a beacon includes determining a program density of a signaling program; determining an initial driving voltage using the program density; determining a current setting for an emitter using the initial driving voltage; adjusting the initial driving voltage to a start-up voltage; executing the signaling program using the start-up voltage; and adjusting the start-up voltage to a signaling voltage. | 01-08-2015 |
| 20150008844 | LIGHTING POWER SUPPLY - Lighting power supply system ( | 01-08-2015 |
| 20150015162 | LIGHTING DEVICE - A trigger-signal-output part sets a burst time cycle to a time period N (integer of two or more) times as long as a constant first cycle, and outputs a trigger signal M (positive integer of N or less) times during an operation period so as to synchronize it with the first cycle, and does not output the trigger signal during a stop period except the operation period of the burst time cycle. Alternatively, a trigger-signal-output part sets a burst time cycle to a time period N times as long as an output cycle of a trigger signal in an operation period, and sets the operation period to a time period M times as long as the output cycle, and sets a stop period except the operation period of the burst time cycle to a time period generated by multiplying the output cycle by a difference between N and M. | 01-15-2015 |
| 20150035450 | SOLID STATE LIGHTING CONTROL - This invention generally relates to solid state lighting control, and more particularly to a dimmer interface circuit and a method for reducing ringing on a drive signal to a solid state lighting device. An embodiment is a dimmer interface circuit for controlling brightness of a solid state light emission device, the interface circuit having an input to receive a brightness control voltage from a dimmer circuit and comprising: a voltage converter to provide a converter output voltage and having an inductive component and a charge store, the charge store controllably coupled to receive charge from the inductive component to thereby convert the brightness control voltage to the converter output voltage; and control circuitry comprising: an input to receive a voltage level indication of the brightness control voltage; an input to receive a voltage level indication of the converter output voltage; a comparison circuit to compare a said received brightness control voltage level indication and a said received converter output voltage level indication; and a transition detector to detect a transition of the brightness control voltage, said transition for turning a said solid state light emission device on, wherein the control circuitry is configured to control the voltage converter dependent on a said comparison of said level indications received at a time of a said transition in a first cycle of the brightness control voltage, such that a difference between the brightness control voltage and the converter output voltage at a time of a said transition in a second, later said cycle is closer to a target voltage difference or target voltage difference range than a said difference at the time of the transition in the first cycle. | 02-05-2015 |
| 20150035451 | ADJUSTABLE LIGHT FIXTURE - Methods and apparatus for controlling a light fixture having at least one adjustable attribute are described. In one embodiment, a light fixture having at least one adjustable attribute comprises a housing, a light source disposed within the housing, a cover secured to the housing that allows at least some light from the light source to pass, a light control circuit, coupled to the light source and disposed within the housing, for detecting a state change of a switch and for providing a control signal for varying an attribute of the light fixture, and the switch, coupled to the light control circuit and disposed within the housing, comprising contacts that are opened and closed in response to a non-mechanical stimulus external to the housing. | 02-05-2015 |
| 20150042238 | DRIVING METHOD OF MULTI-COMMON ELECTRODES AND DISPLAY DEVICE - A driving method of multi-common electrodes and a display device are provided. The driving method includes following steps: providing a plurality of common voltages, in which the common voltages include a first common voltage and a second common voltage, and the first common voltage is different from the second common voltage. During a first period, the first common voltage is set to a first voltage level to drive a first common electrode of a first pixel region in the display panel, and the second common voltage is set to a third voltage level to drive a second common electrode of a second pixel region in the display panel. During a second period, the first common voltage is set to a second voltage level to drive the first common electrode, and the second common voltage is set to a fourth voltage level to drive the second common electrode. | 02-12-2015 |
| 20150042239 | TUNABLE LED LAMP FOR PRODUCING BIOLOGICALLY-ADJUSTED LIGHT - A tunable LED lamp for producing biologically-adjusted light having a housing, a power circuit, a driver circuit disposed within the housing and electrically coupled with the power circuit, and a plurality of LED dies electrically coupled to and driven by the driver circuit. The driver circuit may drive the plurality of LED dies to emit a pre-sleep light having a first spectral power distribution and a general illuminating light having a second spectral power distribution. The pre-sleep light may be configured to affect a second biological effect in an observer. The LED lamp may be configured to fit in a troffer fixture. The LED lamp may also be a troffer fixture. | 02-12-2015 |
| 20150048754 | SYSTEMS AND METHODS FOR DATA COMMUNICATION WITH AN LED DEVICE - Various systems and methods facilitate internal communication within a lighting module as well as communication over an external network. In various embodiments, systems and methods involve direct transmission of operating conditions affecting one or more LEDs to the LED driver via a small electronics package co-located with the LEDs, as well as from the driver and over an external network. | 02-19-2015 |
| 20150048755 | SWITCHING POWER SUPPLY CIRCUIT AND LED ILLUMINATION DEVICE - A flyback-type switching power supply circuit provided with a transformer including a primary coil and a secondary coil, and a switching element connected to the primary coil, comprising: a multiplying circuit for multiplying a first value obtained by multiplying the on-duty ratio of a secondary current flowing to the secondary coil by a predetermined first constant, and a second value obtained by multiplying the peak value of a primary current flowing to the primary coil by a predetermined second constant; and a switching control circuit for controlling switching of the switching element so that the result of multiplication by the multiplying circuit and a third value obtained by multiplying a reference voltage by a predetermined third constant match; and the flyback-type switching power supply circuit is configured so that at least one of the first constant, the second constant, and the third constant is variable by an external signal. | 02-19-2015 |
| 20150048756 | LAMP UNIT POWER SUPPLY SYSTEM - A power supply system supplies gas discharge lamp unit ( | 02-19-2015 |
| 20150054423 | INDIVIDUALLY ADDRESSABLE DIMMER SYSTEMS AND METHODS - Systems and methods for of dimming generally considered to be non-dimmable with conventional dimmers. An exemplary dimming module accepts a power source for a light source and a dimming signal. The dimming module modifies the power signal and generates a modified power signal capable of dimming LED light sources (and other light sources) that are generally considered to be non-dimmable with conventional dimmers. The dimming signal can be a wireless signal. Exemplary embodiments include a computer application executing on a computer or handheld computer that can be used to remotely dim, via the dimming module, one or more LED light sources (and other light sources) that are generally considered to be non-dimmable with conventional dimmers. | 02-26-2015 |
| 20150054424 | PROTECTION CIRCUIT FOR USE IN CONTROLLING INTEGRATED CIRCUIT OF LIGHT EMITTING DIODE - A protection circuit for use in a controlling integrated circuit of a light emitting diode is provided. The protection circuit includes a voltage division circuit and a voltage reduction circuit. The voltage division circuit is coupled to a terminal of a light emitting diode assembly and configured to generate a division voltage according to a terminal voltage of the terminal. The voltage reduction circuit is coupled to the voltage division circuit and configured to reduce the division voltage of the voltage division circuit. | 02-26-2015 |
| 20150061535 | Lighting Device - According to one embodiment, there is provided a lighting device which includes a substrate; a light emitting element which is provided on the substrate; and a resistive element which is provided on the substrate, and is connected to the light emitting element in series, in which a voltage rate of the resistive element when a value of a first voltage which is reduced to half is applied to a first circuit to which the light emitting element and the resistive element are connected in series becomes equal to or smaller than 25% of a voltage rate of the resistive element when the first voltage is applied to the first circuit. | 03-05-2015 |
| 20150061536 | SYSTEMS AND METHODS FOR LOW-POWER LAMP COMPATIBILITY WITH A TRAILING-EDGE DIMMER AND AN ELECTRONIC TRANSFORMER - In accordance with embodiments of the present disclosure, an apparatus may comprise a controller to provide compatibility between a load and a secondary winding of an electronic transformer. The controller may be configured to operate a single-stage power converter in a first power mode for a first period of time, such that the single-stage power converter is enabled to transfer energy from the secondary winding to the load during the first power mode and operate the single-stage power converter in a second power mode for a second period of time prior to the first period of time, such that the single-stage power converter is enabled to transfer energy from the secondary winding to the load during the second power mode, wherein the first power mode and the second power mode occur within a half-line cycle of an electronic transformer secondary signal present on the secondary winding. | 03-05-2015 |
| 20150061537 | OPTOELECTRONIC DEVICE - An optoelectronic device includes a driving transistor, a correction transistor, and a control circuit. The driving transistor adjusts a first current from a power supply based on a voltage stored in a first capacitor. The driving transistor supplies the adjusted first current to the light-emitting element. The correction transistor is electrically connected on a path of a second current flowing from the power supply to the first capacitor, and adjusts the second current based on a voltage stored in a second capacitor. The control circuit controls the second capacitor to store a gray scale voltage while the first current flows, and controls flow of the second current to update the voltage stored in the first capacitor while the first current is blocked. | 03-05-2015 |
| 20150061538 | DRIVE CIRCUIT, DISPLAY DEVICE, AND DRIVE METHOD - A drive circuit for a light emitting element which can correct a threshold voltage of a drive transistor between two reference voltages without a reset power supply. The drive circuit includes a light emitting element, a drive transistor for controlling an amount of current, a first switching element that is arranged between the light emitting element and the drive transistor, a second switching element that is arranged between the drive transistor and the second reference voltage, a third switching element that is arranged between a gate, and one of a source and a drain of the drive transistor, a fourth switching element that is connected to the other of the source and the drain of the drive transistor, and controls input of signal voltage, and a first capacitor connected to the gate of the drive transistor. | 03-05-2015 |
| 20150069929 | LIGHT EMITTER DRIVING DEVICE AND LIGHTING APPLIANCE THEREWITH - A light emitter driving device has a decoder portion which monitors a rectified voltage and generates a dimming signal, and a drive current control portion which controls a drive current to a light emitter according to the dimming signal. The decoder portion has a comparator which compares the rectified voltage with a predetermined threshold voltage to generate a comparison signal, a sampling counter which measures high-level and low-level periods of the comparison signal, a duty calculation portion which calculates the duty of the rectified voltage based on the output of the sampling counter, a filter calculation portion which excludes sporadic variation in duty by applying digital filtering to the output of the duty calculation portion, and a dimming signal generation portion which generates the dimming signal based on the output of the filter calculation portion. | 03-12-2015 |
| 20150084538 | APPARATUS AND METHOD FOR ELECTRICAL STABILITY COMPENSATION - Provided is an apparatus and method for electrical stability compensation. The apparatus includes a drive transistor connecting a power supply to a load, a first variable capacitor having a gate and a source, and a switch transistor for controlling a connection between a programming signal source and a gate of the drive transistor. The gate of the first variable capacitor is connected to the gate of the drive transistor. The first variable capacitor is configured to draw a charge from the gate of the drive transistor during a driving phase for the load. | 03-26-2015 |
| 20150084539 | METHOD FOR OPERATING A HIGH-PRESSURE DISCHARGE LAMP WITH A VARIABLE POWER - A method for operating a high-pressure discharge lamp with a variable power is disclosed. Said method utilizing at least the following steps: (a) providing high-pressure discharge lamp, which has a nominal operating power; (b) operating the lamp with an instantaneous power, where the instantaneous power lies within relative lower and upper power limits, respectively, and said limits may depend on an average power, and said instantaneous power may lie within a predetermined absolute lower and upper power limit; (c) determining the average power from a one-sided moving average value of the instantaneous power or the exponential smoothing of the instantaneous power of a time segment of predefined length. | 03-26-2015 |
| 20150084540 | LED Flashlight - A lighting device with improved optical performance and efficiency is provided. The lighting device includes a source of energy, a light source, a reflector and a holder. The reflector has a first open end, a second end, and a parabolic profile extending between the first open end and second end. The focus of the parabolic profile is located outside of the profile. The reflector may also be movable relative to the light source. The lighting device may include a circuit that delivers a pulsed or thermally compensated pulsed current to the light source. The light device may also include a heat sink housing. | 03-26-2015 |
| 20150084541 | LED DIMMER, LED LIGHTING DEVICE COMPRISING SAME, AND METHOD FOR CONTROLLING DIMMING OF LED LIGHTING DEVICE - A light-emitting diode (LED) dimmer for an LED lighting device, including a power switch, a drive voltage supply, and a LED light-emitting unit. Operating zones of the LED lighting device are changed in accordance with the switching of the power switch, and a dimming level for a next operating zone is determined on the basis of the dimming level and time while the power switch was on during the previous operating period. | 03-26-2015 |
| 20150091468 | LIGHTING DEVICE AND LUMINAIRE USING THE SAME - A lighting device for lighting a solid light-emitting element includes: a DC power source circuit configured to output DC power; a power conversion circuit including a semiconductor element connected between output terminals of the DC power source circuit, the power conversion circuit configured to supply power to the solid light-emitting element through a control of a conduction state of the semiconductor element; a first control circuit configured to control an output of the DC power source circuit; a second control circuit configured to control an output of the power conversion circuit by controlling the conduction state of the semiconductor element; and a short-circuit detection circuit configured to detect a short-circuit in the semiconductor element. The first control circuit reduces the output of the DC power source circuit when the short-circuit detection circuit detects the short-circuit in the semiconductor element. | 04-02-2015 |
| 20150091469 | Undervoltage Protection Circuit for LED Lamp - An undervoltage protection circuit for LED lamp includes a DC/DC converter, and a controlling circuit module. The controlling circuit module includes a signal collecting unit configured for collecting a signal, a signal comparing unit electrically connected to the signal collecting unit, and a signal processing unit electrically connected to the signal comparing unit. The signal comparing unit is configured for comparing a signal input from the signal collecting unit with a threshold voltage. The signal processing unit is configured for processing the signal output of the signal collecting unit to turn on or turn off the DC/DC converter. Whenever the voltage input is less than the threshold voltage which indicates an undervoltage condition, the controlling circuit module produces a high level and causes the DC/DC converter to not work as a result. Inversely, the controlling circuit module drops to a low level and the DC/DC converter begins to work. | 04-02-2015 |
| 20150091470 | SYSTEMS AND METHODS FOR DIMMING CONTROL WITH CAPACITIVE LOADS - System and method for dimming control. The system includes a system controller including a first controller terminal and a second controller terminal, a transistor including a first transistor terminal, a second transistor terminal and a third transistor terminal, and a resistor including a first resistor terminal and a second resistor terminal. The system controller is configured to generate a first signal at the first controller terminal based on an input signal and to generate a second signal at the second controller terminal based on the first signal. The first transistor terminal is coupled to the second controller terminal. The first resistor terminal is coupled to the second transistor terminal. The second resistor terminal is coupled to the third transistor terminal. The transistor is configured to receive the second signal at the first transistor terminal and to change between two conditions in response to the second signal. | 04-02-2015 |
| 20150097495 | Display Lighting and Related Devices and Methods - A method for creating a display lighting presentation is provided. The method includes providing a light sequence definition graphical user interface configured to enable entry of lighting states associated with a lighting sequence to be included in the display lighting presentation, and receiving input via the light sequence publication user interface, the input specifying lighting states to be included in the display lighting presentation. | 04-09-2015 |
| 20150102745 | LIGHTING CONTROLLER, LIGHTING SYSTEM AND LIGHTING CONTROL METHOD - In a lighting system, sound levels are detected in the vicinity of at least one lighting unit to determine when there is a sound level above a threshold. The illumination provided by the lighting unit is adapted in such a way as to encourage a reduction of noise generation. | 04-16-2015 |
| 20150102746 | LIGHTING DEVICE CONTROL USING VARIABLE INDUCTOR - Various techniques are provided for implementing a variable control for a lighting device, such as a flashlight, that uses a variable inductor. The lighting device may include a tail cap, a battery terminal, and a variable inductor mounted in the tail cap and electrically connected in series with the battery terminal. The lighting device may also include a user operable switch configured to selectively bypass the variable inductor. The variable inductor may include, for example, a magnetic coil comprising a wire coil and a core. The variable inductor may also include a ring comprised of ferrous material and having a substantially elliptical inner circumfery and surrounding the magnetic coil, wherein the ring is adapted to be rotated relative to the magnetic coil in response to user actuation of a rotatable user control. | 04-16-2015 |
| 20150108917 | Color-Tunable OLED Lighting Device - A color-tunable OLED device comprising: a charge-carrying cathode layer and a charge-carrying anode layer disposed parallel to each other; at least a first organic light-emitting unit and a second organic light-emitting unit disposed between the cathode and anode; and at least one charge-generating layer disposed between the cathode and anode, wherein the charge-generating layer is a charge-carrying layer of lesser lateral conductivity than the anode and cathode, and said charge-generating layer is electrically connected without additional circuit elements to another charge-carrying layer and disposed such that at least one organic light-emitting unit is wedged between two directly-connected charge-carrying layers, and at least one organic light-emitting unit is not thusly wedged. | 04-23-2015 |
| 20150115830 | POWER LINE COMMUNICATION FOR LIGHTING SYSTEMS - Techniques are provided for bi-directional communication between a power supply and one or more light engines (and/or other lighting system components) via the existing power lines so that no additional communication wires are needed. In particular, the power supply can transmit information by modulating its output (voltage or current) and the light engine (or other lighting componentry, such as a sensor) can communicate back by modulating how much power it draws from the power supply. Any suitable type of modulation scheme can be used, and a master-slave arrangement can be used to control the bi-directional communication if so desired, so as to avoid multiple devices communicating over the power line communication channel at the same time. Other embodiments allow a multiple simultaneous communications over the power line communication channel. | 04-30-2015 |
| 20150115831 | CONVERSION CIRCUIT BETWEEN FLUORESCENT BALLAST AND LED - Conversion circuits ( | 04-30-2015 |
| 20150123560 | METHODS AND APPARATUS FOR INTERPOLATING LOW FRAME RATE TRANSMISSIONS IN LIGHTING SYSTEMS - Methods and apparatus, including computer program products, for interpolating low frame rate transmissions in lighting systems. A method ( | 05-07-2015 |
| 20150123561 | CONTROL OF LIGHTING DEVICES - Presence adaptive lighting control strategies are known to be very effective in reducing energy consumption in buildings. Ultrasonic array sensors have been proposed for reliable presence sensing. Systems and methods are disclosed by which additional sensing functionalities may be enabled for providing new control functions, with the array sensor as basic sensing platform. In particular, hybrid sensing that combines portable sensors (possibly, user enabled) and fixed-infrastructure sensors is considered. Applications are, for example, active presence sensors in lighting control applications. | 05-07-2015 |
| 20150123562 | INFRARED SENSOR ARRAY BASED TEMPERATURE MONITORING SYSTEMS FOR DATA CENTERS AND RELATED METHODS - Temperature monitoring systems for data centers include a plurality of ceiling-mounted infrared sensor arrays. Each infrared sensor array includes a two-dimensional array of infrared emission sensors, and at least some of the infrared emission sensors have field of view patterns that project onto aisle faces of equipment racks that are mounted in rows in the data center. These systems may further include a controller that is remote from at least some of the infrared sensor arrays and that is in communications with the infrared sensor arrays, the controller configured to provide a two-dimensional thermal map of the aisle faces of the equipment racks based at least in part on temperature data received from the infrared sensor arrays. | 05-07-2015 |
| 20150130367 | DISPLAY APPARATUS, POWER VOLTAGE GENERATING APPARATUS, AND METHOD OF GENERATING POWER VOLTAGE - A power voltage generating apparatus supplies a power voltage to a plurality of pixel circuits of a display apparatus. The power voltage generating apparatus includes: a high voltage converter to generate a high voltage; a low voltage converter to generate a low voltage; a switching circuit to alternately output the high voltage and the low voltage at a power voltage terminal as the power voltage; and a discharging unit coupled to the power voltage terminal and configured to discharge the power voltage terminal until a voltage output is converted from the high voltage to the low voltage by using the switching circuit. | 05-14-2015 |
| 20150130368 | MULTI-PORT LED-BASED LIGHTING COMMUNICATIONS GATEWAY - A multi-port communications gateway for one or more LED based illumination devices includes a lighting communications interface that is configured to be coupled to the LED based illumination device(s). The lighting communications interface transmits both data signals and power signals. A lighting control network interface is configured to be coupled to a lighting control system, which generates control commands. A building management network interface is configured to be coupled to a building management system and is configured to receive and transmit information from sensors coupled to the LED based illumination device(s). Memory in the gateway stores information received from the LED based illumination device (s). A processor determines a summary status value associated with the LED based illumination device(s) based on information stored in memory. A real time clock determines a date and time that is periodically transmitted to the LED based illumination device(s). | 05-14-2015 |
| 20150137697 | INTEGRATED LIGHT SOURCE DRIVING CIRCUIT AND LIGHT SOURCE MODULE USING THE SAME - An integrated light source driving circuit including a power transistor, a driving chip and a diode and a light source module using the same are provided. The power transistor includes a substrate, first and second active regions, a gate region and an isolation region. The first and second active regions are disposed on two opposite sides of the substrate. The second active region and the gate region are disposed on the same side of the substrate. The isolation region is electrically connected to the first active region and electrically independent with/from the second active region and the gate region. The driving chip is stacked on the second active region and electrically connected to the gate region. The diode is disposed in the isolation region of the power transistor, where an anode of the diode is disposed toward the isolation region to be electrically connected to the first active region. | 05-21-2015 |
| 20150137698 | METHOD AND APPARATUS FOR INTEGRATED LIGHTING CONTROL ACCORDING TO POWER RESERVE STAGE - Disclosed is a method and apparatus for integrally controlling lighting according to the status of power reserve stages. The apparatus for integrally controlling lighting according to power reserve stage, comprises: a lighting control result receiver for receiving lighting control result data generated by integrating a lighting identification number and control result information of the LED light source the brightness of which is controlled according to power reserve stage-based lighting control information; a power reserve stage determination unit for determining a power reserve stage based on the received lighting control result data; and a power reserve stage issuer for transmitting the determined power reserve stage to the lighting controller in real time. | 05-21-2015 |
| 20150137699 | METHOD OF ASSOCIATING WIRELESS CONTROL DEVICES - A first wireless control device may be associated with a second wireless control device in response to the movement of the first wireless control device in relation to the second wireless control device. The second control device may determine whether the signal strength of the wireless signals received from the first wireless control device has changed, and may associate the first wireless control device with the second wireless control device if the signal strength of the received wireless signals has changed. The second control device may be disassociated with the first control device by moving the first wireless control device in relation to the second wireless control device. The second control device may disassociate the first control device when the signal strength of subsequent wireless signals received from the first wireless control device has changed. | 05-21-2015 |
| 20150145433 | LIGHTING APPARATUS - A lighting apparatus includes a light source module and a power supply module. The light source module includes an electrical light source and a transmitter circuit configured to transmit a wireless signal containing information about the light source. The power supply module is connected to the light source module and includes a power supply circuit configured to generate electric power for the light source, a receiver circuit configured to receive the wireless signal transmitted from the transmitter circuit, and a control circuit configured to control the power supply circuit in accordance with the wireless signal received through the receiver circuit. | 05-28-2015 |
| 20150296581 | LIGHT EMITTING DIODE DRIVING APPARATUS WITH VARIABLE OUTPUT CURRENT AND METHOD FOR THE SAME - A pulse width modulation control unit multiplies a value of a user side setting signal by a value of a dimming signal to obtain a pulse width modulation output current control signal. The pulse width modulation control unit sends the pulse width modulation output current control signal to a light emitting diode driving unit. The light emitting diode driving unit multiplies a value of the pulse width modulation output current control signal by a value of a maximum output current of the light emitting diode driving unit to obtain a light emitting diode pulse width modulation driving current. The light emitting diode driving unit drives a light emitting diode by the light emitting diode pulse width modulation driving current. | 10-15-2015 |
| 20150296598 | Contactless Device Configuration - A driver for a lighting product includes a wireless interface circuit configured to be accessed wirelessly to store information relating to operation of the lighting product. A driving circuit is coupled to the wireless interface circuit. The driving circuit is configured to retrieve the stored information relating to the operation of the lighting product from the wireless interface circuit and drive the lighting product based on the retrieved information. | 10-15-2015 |
| 20150303379 | COMPOUND FOR ORGANIC ELECTRIC ELEMENT, ORGANIC ELECTRIC ELEMENT COMPRISING THE SAME AND ELECTRONIC DEVICE THEREOF - Provides herein are a compound capable of improving light emitting efficiency, stability, and lifespan of the element, an organic element using the same, and an electric device for the same. | 10-22-2015 |
| 20150305106 | Lighting Control System and Method - A device and method for changing light intensity is provided. The power provided to a light is first changed with the lighting control device at a first rate along a first portion of a power range. The power provided to the light is second changed with the lighting control device at a second rate along a second portion of the power range, the second rate being different from the first rate. | 10-22-2015 |
| 20150312993 | ILLUMINANT DEVICE AND CONTROLLING MODULE THEREOF - A controlling module controls illuminant state of an illuminant module according to a controlling signal sent form a wireless controller. The controlling module is electrically connected to the illuminant module and includes a microprocessor, a wireless receiver, a regulator, and a driving unit. The wireless receiver is electrically connected to the microprocessor and receives the controlling signal sent form the wireless controller. The regulator is electrically connected to the microprocessor. The driving unit is electrically connected to the microprocessor and the illuminant module. | 10-29-2015 |
| 20150319823 | Device for forming a light source - A device that creates non-visible visible-spectrum light comprises of a light source and optics elements that result in irradiated visible spectrum light rays with an intensity that is below a threshold for being visible by a normal observer. For a human observer using photopic or mesopic vision, light rays with an intensity below 3 cd/m | 11-05-2015 |
| 20150332633 | METHOD AND CIRCUIT FOR SYNCHRONIZING INPUT AND OUTPUT SYNCHRONIZATION SIGNALS, BACKLIGHT DRIVER OF LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME AND METHOD FOR DRIVING THE BACKLIGHT DRIVER - Disclosed are method and circuit for synchronizing input and output synchronization signals, which can synchronize an output synchronization signal based on frequency change of an input synchronization signal and limit input and output periods, thereby preventing flickering, a backlight driver of a liquid crystal display device using the same, and a method for driving the backlight driver. The method for synchronizing input and output synchronization signals, includes generating an output synchronization signal whose output period is set based on a comparison result between an input period of an input synchronization signal and a previous output period of the output synchronization signal, and limiting the output period of the output synchronization signal within a predefined limit range from the previous output period. | 11-19-2015 |
| 20150333639 | CONTROLLER - A controller ( | 11-19-2015 |
| 20150334794 | Dimmable Universal Voltage LED Power Supply with Regenerating Power Source Circuitry and Non-Isolated Load - A light-emitting diode (LED) lighting device has an LED and a power supply including an inductor coupled to the LED. A cathode of the LED is coupled to the inductor opposite an anode of the LED. The inductor is coupled for receiving a first power signal. A transistor includes a conduction terminal coupled to the inductor to enable current through the inductor. A current from the first power signal is switched to generate a second power signal. A first diode includes an anode coupled to the inductor opposite the cathode of the LED. A controller includes a first terminal coupled to a cathode of the first diode and a second terminal coupled to a control terminal of the transistor. A zener diode is coupled to the first terminal of the controller. A capacitor is coupled between the first diode and inductor. A second diode is coupled to the first diode. | 11-19-2015 |
| 20150334795 | CONTROLLER - The disclosure relates to a controller ( | 11-19-2015 |
| 20150342000 | LED BACKLIGHT DRIVE CIRCUIT AND LIQUID CRYSTAL DISPLAY - An LED backlight drive circuit includes a drive chip and a frequency setting circuit. The frequency setting circuit includes at least two groups of resistors that are connected in parallel and having an end connected to a frequency setting pin RT of the drive chip and an opposite end grounded. Adjustment of a frequency of a MOSFET drive signal is achieved by changing the resistance of at least one of resistors. The LED backlight drive circuit and the liquid crystal display include multiples resistors connected in a proper arrangement of parallel and serial connection so as to provide an increased number of more precise values of resistance through various combinations of the resistances of the resistors, making it convenient to adjust a frequency of an MOSFET drive signal. | 11-26-2015 |
| 20150342009 | INTERFACE CIRCUIT FOR SIGNAL TRANSMISSION - The invention relates to an interface circuit ( | 11-26-2015 |
| 20150359055 | LED LIGHTING APPARATUS - The invention relates to an LED lighting apparatus comprising
| 12-10-2015 |
| 20150364701 | ORGANOMETALLIC COMPLEX AND ORGANIC LIGHT-EMITTING ELEMENT USING THE COMPLEX - Provided is an organic light-emitting element having high light-emitting efficiency and a long element lifetime, the organic light-emitting element including an anode, a cathode, and an organic compound layer placed between the anode and the cathode, in which: the organic compound layer includes an emission layer; the emission layer includes a host and a guest; the host is an aromatic hydrocarbon compound; the guest is an iridium complex of a specific structure; and a content of the host is 50 wt % or more with reference to the total amount of the constituent materials for the emission layer. | 12-17-2015 |
| 20150366007 | PROPAGATION DELAY COMPENSATION FOR FLOATING BUCK LIGHT EMITTING DIODE (LED) DRIVER - Devices, systems, and methods for improving a current spread of a light emitting diode (LED). Some aspects including a peak detector and a variable gain amplifier coupled to the peak detector and configured to amplify an output of the peak detector. The variable gain amplifier controlled by a gain selector, coupled to the variable gain amplifier by varying the gain of the variable gain amplifier based on an on time of a signal. | 12-17-2015 |
| 20150366026 | INTEGRATED DEVICE COMPRISING A MATRIX OF OLED ACTIVE PIXELS WITH IMPROVED DYNAMIC RANGE - An integrated device includes a semiconducting substrate having a matrix of active pixels formed therein. Each active pixel includes an OLED diode, a first nMOS transistor having its source coupled to an anode of the OLED diode, and a refresh circuit coupled to a gate of the first nMOS transistor. The first nMOS transistor has its source and its substrate coupled together. The first nMOS transistor is situated in and on a first part of the semiconductor substrate, and the refresh circuit is situated in and on a second part of the semiconductor substrate, with the first part and the second part being electrically insulated from one another. | 12-17-2015 |
| 20150373814 | FACILITY LIGHTING CONTROL SYSTEM - A lighting control system for municipalities and recreation departments is disclosed. The lighting system can process payments so that a user can pay for usage of a recreational facility at the time of need. The lighting control system can communicate with remote systems such that only a single cellular connection or broadband connection is required. | 12-24-2015 |
| 20150382417 | Universal Voltage LED Power Supply with Regenerating Power Source Circuitry, Non-Isolated Load, and 0-10V Dimming Circuit - A light-emitting diode (LED) lighting device has an LED and a power supply including an inductor coupled to the LED. A cathode of the LED is coupled to the inductor opposite an anode of the LED. The inductor is coupled for receiving a first power signal. A transistor includes a conduction terminal coupled to the inductor to enable current through the inductor. A current from the first power signal is switched to generate a second power signal. A first diode includes an anode coupled to the inductor opposite the cathode of the LED. A controller includes a first terminal coupled to a cathode of the first diode and a second terminal coupled to a control terminal of the transistor. A dimming controller is coupled to a third terminal of the controller. A Zener diode is coupled to the first terminal of the controller. | 12-31-2015 |
| 20160006361 | MULTI-OUTPUT POWER SUPPLY APPARATUS AND OUTPUT CIRCUIT THEREOF - A multi-output power supply apparatus may include a transformer unit transforming a voltage level of input power using a primary winding and first and second secondary windings, a first output unit stabilizing power applied to the first secondary winding using a voltage multiplier circuit and outputting first power, and a second output unit stabilizing power applied to the second secondary winding and outputting second power. | 01-07-2016 |
| 20160013362 | NANOSTRUCTURE SEMICONDUCTOR LIGHT-EMITTING DEVICE | 01-14-2016 |
| 20160028320 | AUTOMATIC CONFIGURATION OF A LOAD CONTROL SYSTEM - A control module is able to be installed with electrical devices, such as, for example electrical loads (e.g., lighting loads) and/or load regulation devices. The control module may determine whether the electrical loads (e.g., drivers for lighting loads) are responsive to one or more of a plurality of control techniques. The control module may be able to automatically determine an appropriate control technique to use to control the connected driver and/or lighting load. The control module may sequentially attempt to control the connected driver and/or lighting load using each of the plurality of control techniques and determine if the driver and/or lighting load is responsive to the present control technique. The plurality of control techniques may include one or more analog control techniques and one or more digital control techniques. | 01-28-2016 |
| 20160035282 | Pixel Circuit for an Active-Matrix Organic Light-Emitting Diode Display - A pixel circuit for an active-matrix organic light-emitting diode display including an organic light-emitting diode and a driving circuit. The driving circuit includes six switches, a driving transistor, and a capacitor. By compensating the threshold voltage of the driving transistor, the electric current flowing through the organic light-emitting diode can precisely be controlled without influence by the threshold voltage of the driving transistor, increasing the luminance uniformity and stability of the display. Furthermore, the present invention can be applied to a depletion mode driving transistor (i.e., an oxide TFT). Thus, the threshold voltage can be obtained to proceed with compensation no matter the threshold voltage of the driving transistor is larger or smaller than zero. | 02-04-2016 |
| 20160036484 | NETWORKABLE LIGHT EMITTING DEVICE AND METHODS AND SYSTEMS FOR USING SAME - A networkable light-emitting device and methods and systems for using same are provided. According to one aspect, the subject matter described herein includes a networkable light-emitting device that includes a light emitting element, a wireless transceiver for communicating with other networkable light-emitting devices to create a wireless network, a memory for storing programs uploaded to the device via the wireless network, and a controller that includes hardware for executing at least one program stored in the memory. | 02-04-2016 |
| 20160037615 | Wireless Light Pairing, Dimming and Control | 02-04-2016 |
| 20160044766 | DIRECTIONAL LIGHTING SYSTEM AND METHOD - The method of spatial lightbulb operation includes determining the position of the lightbulb relative to a physical space, detecting a contextual event, determining a spatial lighting pattern associated with the contextual event, and selectively controlling lightbulb light emitting elements based on the position of the lightbulb and the spatial lighting pattern. A lightbulb including: a plurality of individually controlled light emitting elements mounted in fixed, predetermined positions on the substrate; a light sensor mounted to the substrate; a wireless communication module; and a processor configured to: index each light emitting element; progress each of the plurality of light emitting elements through an orientation pattern; associate a reference point on the lightbulb with an external reference point; and selectively operate individual light emitting elements of the plurality according to lighting instructions, based on a relationship between the reference point on the lightbulb and the external reference point | 02-11-2016 |
| 20160057837 | DUAL-MODE LUMINAIRE CONTROLLERS - Described herein is a dual-mode luminaire controller for a luminaire in which dimming signals can be provided to control the operation of the luminaire using signals in accordance with either ‘0-10V’ or DALI protocols. The controller includes a central processing module, an isolated supply in which both a DALI interface and a ‘0-10V’ interface are provided. The luminaire controller also includes a ZigBee transceiver module through which signals can be provided for selecting one of the interfaces in accordance with the operating protocol of the luminaire with which the luminaire controller is associated. | 02-25-2016 |
| 20160057838 | EXTENSION INTERFACE FOR LUMINAIRES - An extension interface for integrating a modular extension unit into a luminaire includes a mounting for the modular extension unit, a power interface for providing power to the modular extension unit, and a communication interface for exchanging commands and data between the modular extension unit and a controller of the luminaire. A method of integrating a modular extension unit into a luminaire includes mounting the modular extension unit onto the luminaire, providing power to the modular extension unit via a power interface, and exchanging commands and data between the modular extension unit and a controller of the luminaire using a communication interface. A luminaire includes a light source, power circuitry for providing power to the light source, control circuitry for controlling the light source and the power circuitry, and an extension interface for integrating a modular extension unit into the luminaire. | 02-25-2016 |
| 20160057839 | LIGHTING APPARATUS, LIGHTING CONTROL SYSTEM, AND METHOD OF CONTROLLING THE LIGHTING APPARATUS - A lighting apparatus connected to a network includes a light source for emitting light. A controller controls operation of the light source in response to an external control signal. A non-contact sensor detects a non-contact signal and generates a reset signal in response to detecting the non-contact signal. A communication interface communicatively connects the lighting apparatus to a wireless network to receive the external control signal from a remote apparatus via the wireless network and disconnects the lighting apparatus from the wireless network in response to receiving the reset signal from the non-contact sensor. | 02-25-2016 |
| 20160057841 | THREE-WAY SWITCHING CIRCUIT HAVING DELAY FOR INRUSH CURRENT PROTECTION - A three-way load control device may be coupled to a circuit including an AC power source, an electrical load, and an external single-pole double-throw (SPDT) three-way switch. The load control device may include a three-way switching circuit comprising an internal SPDT switch, a relay coupled to the internal SPDT switch, a turn-on delay circuit responsive to a voltage at a movable contact of the internal SPDT switch, and a turn-off delay circuit responsive to voltages at fixed contacts of the internal SPDT switch. The turn-on delay circuit renders the relay conductive after a turn-on delay from when either the internal SPDT switch or the external three-way switch is actuated to turn the electrical load on. The turn-off delay circuit renders the relay non-conductive after a turn-off delay from when either the internal SPDT switch or the external three-way switch is actuated to turn off the electrical load. | 02-25-2016 |
| 20160066371 | Non-Linear Current IDAC With Synthesis In Time Domain - An electrical current (“I”) digital-to-analog converter (“IDAC”) ( | 03-03-2016 |
| 20160066374 | HIGH-POWER RETROFIT LED LAMP WITH ACTIVE AND INTELLIGENT COOLING SYSTEM FOR REPLACEMENT OF METAL HALID LAMP AND HIGH-PRESSURE SODIAM LAMP - The present invention relates to the field of electric illuminator technology, in particular, to a high-power retrofit Light Emitting Diode (LED) lamp and a radiator assembly therein as replacement for metal halide lamp and high-pressure sodium lamp. The high-power retrofit LED lamp for replacement of metal halide lamp and high-pressure sodium lamp is provided, comprising a main substrate, an active cooling assembly comprising a radiator and a radiator base plate, a backlight substrate, and a screw base, wherein the main substrate is mounted on the lower side of the radiator base plate, the backlight substrate is mounted on an upper side of the radiator base plate, the backlight substrate is substantially in the shape of a ring and situated around the radiator, wherein the main substrate is configured to generate light illuminating downwards, the backlight substrate is configured to generate light illuminating upwards, and the screw base is configured to fit into a socket of a metal halide lamp or a high-pressure sodium lamp. | 03-03-2016 |
| 20160066397 | RESETTABLE LIGHTING SYSTEM AND METHOD - A lighting system, including: light emitting elements; a reset switch operable in a first and second state; non-volatile reset memory configured to record the state of the reset switch when power is provided to the system; a wireless communication system; non-volatile communication memory configured to store default settings and configuration settings; a control system operable, in response to initial power provision to the control system, between: a configured mode when an instantaneous reset switch state matches the recorded state, the configured mode including: connecting the wireless communication system to a remote device based on the configuration settings, receiving instructions from the remote device, and controlling light emitting element operation based on the instructions; and a reset mode when the instantaneous reset switch state differs from the recorded state, the reset mode including: erasing the configuration settings from the communication memory and operating the system based on the default settings. | 03-03-2016 |
| 20160072007 | NANOSTRUCTURE SEMICONDUCTOR LIGHT EMITTING DEVICE - There is provided a nanostructure semiconductor light emitting device including a base layer formed of a first conductivity-type nitride semiconductor and a plurality of light emitting nanostructures disposed to be spaced apart from one another on the base layer. Each of the plurality of light emitting nanostructures includes a nanocore formed of the first conductivity-type nitride semiconductor, a stress control layer disposed on a surface of the nanocore and including a nitride semiconductor containing indium, an active layer disposed on the stress control layer and including a nitride semiconductor containing indium, and a second conductivity-type nitride semiconductor layer disposed on the active layer. | 03-10-2016 |
| 20160074620 | ILLUMINATION APPARATUS - In an illumination apparatus, a control unit starts lighting of a light source at a first time before a wake-up set time and executes a first control pattern to increase a dimming ratio of the light source from the first time to a second time determined based on the wake-up set time and a second control pattern to further increase the dimming ratio of the light source from the second time to a third time determined based on the wake-up set time. When a change curve of the dimming ratio in the first control pattern and the second control pattern is applied to a function represented by the equation: Y(t)=d+(a−d)/(1+(t/c) | 03-17-2016 |
| 20160081168 | OPTICAL PROJECTION APPARATUS AND ILLUMINATION APPARATUS USING SAME - An optical projection apparatus includes a light specification setting unit for setting a specification of a light, a shape setting unit for setting a shape made by the light, a position setting unit for setting a position of the shape, a size setting unit for setting a size of the shape, an optical data generation unit for generating optical data based on the specification, the shape, the position, and the size. The optical projection apparatus further includes a light drawing unit for generating light drawing data by performing a drawing process with the optical data, an optical projection unit for projecting the shape at the position with the light drawing data, and a manipulation unit for allowing a user to set one or more parameters indicating the specification, the shape, the position, and the size. | 03-17-2016 |
| 20160081169 | LIGHT-EMITTING DEVICE, METHOD OF CONTROLLING LIGHT-EMITTING DEVICE, AND PROGRAM - There is provided a light-emitting device including a wireless communication unit that performs wireless communication with another device, a light-emitting unit that emits light, and a control unit that performs control by switching between a mode in which the light emission of the light-emitting unit is controlled in accordance with a timing at which a signal is received by the wireless communication unit and a mode in which the light emission of the light-emitting unit is controlled in accordance with an internal timer based on a light emission timing included in a signal received from the other device by the wireless communication unit. | 03-17-2016 |
| 20160104818 | MICRO-LIGHT-EMITTING DIODE - A micro-light-emitting diode (micro-LED) includes a first type semiconductor layer, a second type semiconductor layer, a dielectric layer, and electrodes. The second type semiconductor layer is disposed on or above the first type semiconductor layer. The dielectric layer is disposed on the second type semiconductor layer. The dielectric layer includes openings therein to expose parts of the second type semiconductor layer. The electrodes partially are disposed on the dielectric layer and respectively electrically coupled with the exposed parts of the second type semiconductor layer through the openings of the dielectric layer, in which the electrodes are separated from each other. | 04-14-2016 |
| 20160128146 | CURRENT-STEERING DAC CIRCUIT AND LED CIRCUIT USING THE SAME - A current-steering DAC circuit for switching a light emitting diode, the current-steering DAC circuit including a current-steering DAC and a resistor. The current-steering DAC outputs a stable current and includes a plurality of current-steering units with a first output end and a second output end. The first output end is electrically connected to the light emitting diode, and the second output end is electrically connected to the resistor. Each of the current-steering units includes a current source and a switching circuit. A first end of the switching circuit is electrically connected to the current source. A second end and a third end of the switching circuit are electrically connected to the first output end and the second output end of the current-steering DAC, respectively. The switching circuit is controlled by a switching signal so as to selectively connect one of the second end and the third end to the first end. | 05-05-2016 |
| 20160128160 | CONTROL OF ILLUMINATION DEVICES USING DC-DC CONVERTERS - In an embodiment, method of controlling an illumination device by an output signal of a DC-DC converter is disclosed. The output signal is controlled by a PWM signal. The method includes receiving a feedback signal corresponding to variation in the output signal with respect to a pre-determined output signal, and determining a target duty cycle of the PWM signal based on the feedback signal. The PWM signal of the target duty cycle is capable of enabling the DC-DC converter to generate the pre-determined output signal. The method includes providing the PWM signal of an effective duty cycle equal to the target duty cycle over N switching pulses of the PWM signal to the DC-DC converter. The method provides the PWM signal by providing M switching pulses of a first PWM signal of a first duty cycle, and N−M switching pulses of a second PWM signal of a second duty cycle. | 05-05-2016 |
| 20160135259 | DRIVE CIRCUIT WITH AN EXTERNAL MODE-ADJUSTING PIN - A drive circuit with an external mode-adjusting pin includes an operational mode control circuit and a drive processing circuit. The operational mode control circuit further includes a current mirror circuit, a resistor, a capacitor and a comparator. The first comparator input port receives a reference voltage. The second comparator input port couples the second output port of the current mirror and the capacitor. The current mirror circuit bases on a resistor current to generate a charge current for charging the capacitor. As the charge voltage at the second comparator input port reaches a reference voltage, a trigger signal is outputted to the drive processing circuit for controlling the switches thereof. The external pin is defined to one end of the resistor or the capacitor for varying the resistance or the capacitance respectively to determine the operational mode for the driven circuit. | 05-12-2016 |
| 20160135267 | MODULAR CONSTANT CURRENT REGULATOR - Constant current regulator ( | 05-12-2016 |
| 20160143106 | METHOD AND SYSTEM FOR LIGHTING INTERFACE MESSAGING WITH REDUCED POWER CONSUMPTION - Provided is a system for reducing power consumption in digitally addressable lighting interfaces (DALI), the system including a processor having at least one pin, a transistor coupled to the processor and a resistive network coupled to the processor and the resistive network. | 05-19-2016 |
| 20160143114 | POWER SUPPLY DOUBLE SWITCH CONTROLLER - A power supply double switch controller has a ballast, a controller on the ballast having a first switch connector and a second switch connector. A first switch is connected to the first switch connector on the ballast. The first switch connector is a toggle switch with a first switch first position and a first switch second position. A second switch is connected to the second switch connector on the ballast. The second switch connector is a toggle switch with a second switch first position and a second switch second position. A mode dimming cycle is programmed on the controller. The controller is configured to receive a second switch first position and a second switch second position at a second switch connector, and a first switch first position and a first switch second position at the first switch connector. | 05-19-2016 |
| 20160143119 | LIGHTING DEVICE AND LIGHTING CONTROL SYSTEM HAVING THE SAME - A lighting device is provided, which may include a power converting module, a lighting module, a wireless receiving module and a wired receiving module. The power converting module may be coupled to the lighting module, the wireless receiving module and the wired receiving module. The wireless receiving module may receive a second control signal transmitted from a wireless control module by a wireless transmission technology, and convert the second control signal into a second converted control signal. The wired receiving module may receive a first control signal transmitted from a wired control module, and convert the first control signal into a first converted control signal. The power converting module may drive the lighting module and the wireless receiving module, and may adjust the luminous status of the lighting module according to the first and second converted control signals. | 05-19-2016 |
| 20160157310 | CONTROL SYSTEM OF AN ELECTRICAL LOAD | 06-02-2016 |
| 20160164019 | Carbon Dot Light Emitting Diodes - An electroluminescent LED device comprising a hole transport layer, an electron transport layer, an active emissive layer between the hole transport layer and the electron transport layer, and carbon dots forming the active emissive layer. | 06-09-2016 |
| 20160165681 | High-End Trim Control of Lighting Fixtures - A device and system for controlling a light source. The device has a positive terminal and a negative terminal for setting the high-end trim of a light source, the device includes several zener diodes each having a different zener voltage; and a selector having a plurality of positions, positioning the selector in each of the plurality of positions couples a corresponding one of the zener diodes between the positive terminal and the negative terminal. The cathode of the selected zener diode is coupled to the positive terminal and the anode of the selected zener diode is coupled to the negative terminal. The selected zener diode limits the voltage across the positive terminal and the negative terminal to set the high-end trim of a 0-10 volt lighting control signal. | 06-09-2016 |
| 20160165686 | DRIVER FOR A LIGHT EMITTING DIODE (LED) LIGHTING SYSTEM - Provided is a lighting system driver including a damper circuit. A power circuit is coupled to the damper circuit and includes a first portion of a winding of a transformer. Also included is an oscillating control circuit including a second portion of the winding of the transformer. | 06-09-2016 |
| 20160172907 | INDUCTIVELY COUPLED BALLAST CIRCUIT | 06-16-2016 |
| 20160181918 | System and Method for a Switched-Mode Power Supply | 06-23-2016 |
| 20160183353 | A LIGHTING DEVICE AND LUMINAIRE COMPRISING AN INTEGRATED ANTENNA | 06-23-2016 |
| 20160190807 | POWER DISTRIBUTION SYSTEM - The invention relates a power distribution system ( | 06-30-2016 |
| 20160192458 | SYSTEMS AND METHODS OF DETERMINING A TYPE AND FEATURE SET OF A LIGHT SOURCE, AND THE CONTROL THEREOF - Systems and methods of the disclosed subject matter provide to detect the signature of a light source through either electrical signature on a circuit or external light signatures output by the light source, and a switch can change modes and features to match the capabilities of the connected light source. Embodiments of the disclosed subject matter provide a light source, a sensor to determine a type of the light source, and a switch, including a processor, to determine a set of operations according to the determined type of light source, and to control the light source to perform a selected operation from the determined set of operations. | 06-30-2016 |
| 20160198551 | Driver Circuit for a Light Source and Method of Transmitting Data Over a Power Line | 07-07-2016 |
| 20160198553 | LIGHT BULB ADAPTER | 07-07-2016 |
| 20160381770 | ILLUMINATION CONTROLLER AND LUMINAIRE CONTROL METHOD - An illumination controller includes a communication interface circuit configured to communicate with a luminaire via radio waves; an input, device configured to obtain a manipulation instruction; and a control processor configured to generate at least a first command and a second command according to a corresponding manipulation instruction obtaining state of the input device, and transmit the command generated to the luminaire via the communication interface circuit, wherein, when the control processor has generated the first command according to the manipulation instruction obtaining state, the control processor is configured to repeatedly transmit the first command, generated to the luminaire at first transmission intervals, and when the control processor has generated the second command according to the manipulation instruction obtaining state, the control processor is configured to repeatedly transmit the second command generated to the luminaire at second transmission intervals different from the first transmission intervals. | 12-29-2016 |
| 20170238386 | LOAD CONTROL DEVICE FOR A LIGHT-EMITTING DIODE LIGHT SOURCE | 08-17-2017 |
| 20180027619 | ARCING PROTECTOR | 01-25-2018 |
| 20190150241 | AC Direct Drive system for Light Emitting Diodes with Ultra-Low Flicker, Low Harmonic Distortion, Dimming Compatibility and Power Line Regulation | 05-16-2019 |
