Entries |
Document | Title | Date |
20080197789 | LIGHT EMITTING DEVICE - A light emitting device includes multiple light units each of which includes a semiconductor light source, and a current supply control means for controlling supply of current to the semiconductor light source. A control unit includes a control signal generation means for generating and providing a control signal. The light emitting device also includes switching means for controlling feeding from a DC power source to a corresponding one of the light units in response to the control signal. Each of the switching means is coupled to a corresponding one of the light units through a feed line. | 08-21-2008 |
20080224635 | Lighting Apparatus and Method - The present invention relates to improvements in lighting systems, in particular lighting systems having variable colour temperature. We describe an apparatus for controlling two light sources using an input voltage from a mains light dimmer, the light sources comprising a first light source configured to emit light having a second colour temperature, wherein the second colour temperature is higher than the first colour temperature, the apparatus comprising an input connection for receiving the input voltage from the mains light dimmer, a sensor for sensing a value voltage of the input voltage, driving means for driving the light sources, and a controller for controlling the driving means responsive to said sensing. | 09-18-2008 |
20080231213 | LED String Lights - The invention herein relates to a decorative light, and, more particularly, to a LED (light-emitting diode) string lights with a current-limiting device. The LED string lights comprises a plug, a plurality of leads and a plurality of LED bulbs. Said LED string lights further comprises a current-limiting device connecting to said LED bulbs in series. Said current-limiting device comprises a resistor and a shell encapsulating said resistor therein. Said shell is an assembled structure with two contact pieces fixed inside. Said resistor connects to said two contact pieces through two legs of said resistor respectively and said two contact pieces connect to leads respectively to form a circuit. The present invention provides a LED string lights with low manufacturing cost, simple manufacturing technics and great working reliability. | 09-25-2008 |
20080238340 | METHOD AND APPARATUS FOR SETTING OPERATING CURRENT OF LIGHT EMITTING SEMICONDUCTOR ELEMENT - A method of determining an operating current adjustment for a light emitting semiconductor element in order to generate a predetermined brightness includes applying a test voltage to the light emitting element, determining a corresponding test current through the light emitting element, and determining the operating current adjustment dependent on the determined test current and the applied test voltage. | 10-02-2008 |
20080238341 | Color Control for Dynamic Scanning Backlight - A method of controlling the output of a luminaire by receiving a first target signal associated with a first frame; generating a first light output control signal for an on time portion of the first frame, the light output control signal responsive to the received first target signal; sampling a light output during the on time portion of the first frame, the light output being responsive to the first light output control signal; receiving a second target signal associated with a second frame, the second frame following the first frame; comparing the received second target signal with the sampled light output of the on time portion of the first frame; and generating an error signal responsive to the comparing. | 10-02-2008 |
20080246417 | Device, system and method for adjusting the luminous flux of a lamp - The present invention relates to a device for adjusting the luminous flux of a lamp, which, in one embodiment, comprises a conversion unit for converting a main voltage into a supply voltage to be applied to one or more lamp or light elements. The device also comprises a microcontroller which controls the conversion unit in accordance with a luminous flux adjustment program which may be based on current date and time. The device also includes a receiver (for example, a GPS receiver) to receive a broadcast signal carrying date and time information employed by controller when executing the luminous flux adjustment program or for updating a clock/calendar module. The present invention also relates to a system incorporating such a device as well as to a related method for adjusting the luminous flux of a lamp. | 10-09-2008 |
20080265801 | Solid state lighting apparatus - A lighting apparatus includes a solid state lamp including one or more solid state lighting elements, and a power circuit including a current limiting device electrically connected to the lamp. The current limiting device configured to impose a maximum threshold on the current delivered to the lamp, wherein the current limiting device functions as essentially a constant current source. The lighting apparatus includes a housing for the power circuit and lamp, as a module unit. | 10-30-2008 |
20080265802 | System and Method for Controlling Lighting Systems - A light panel ( | 10-30-2008 |
20080297068 | Method and System for Lighting Control - A system and method for controlling an entertainment system is provided. The system can have at least one light source to generate variable light output and at least one controller coupled to the at least one light source to control the variable light output based on a number of interruptions of power supplied to the apparatus over a pre-determined time period. The variable light output can be a light temperature. The at least one light source can be a plurality of light sources, with the at least one controller having a plurality of addresses and each of the addresses designating one or more of the plurality of light sources to be controlled. The at least one controller can synchronize or unsynchronize the plurality of light sources. | 12-04-2008 |
20080303453 | Illumination Control Apparatus Using a Pulsating Waves - An illumination control apparatus using a pulsating wave is disclosed, in which a pulsating power is supplied to an electric power supplied to a fluorescent light stabilizer which needs an AC voltage. The level of the same is varied and supplied to an illumination control, such as fluorescent light and common light, is possible based on an input power control of a stabilizer without changing an installation of a conventional fluorescent light and common light device and of the power construction. In addition, the electric power can be concurrently supplied to a plurality of stabilizers based on a capacity of apparatus without changing the construction of a conventional system. | 12-11-2008 |
20080309254 | Backlight Unit for Display Service - Electronic devices/equipment, such as CD or MP3 players, PDAs, organizers, mobile phones, often include a backlight display unit. The area of the backlight unit can be divided into segments. The intensity of light for backlighting each such segment can be controlled separately, which may reduce the energy consumption of the display unit. | 12-18-2008 |
20080309255 | LIGHTING DEVICES AND METHODS FOR LIGHTING - A lighting device comprises groups of solid state light emitters, a sensor and circuitry. If the emitters are illuminated, the sensor is exposed to combined light from the groups, and senses only a portion of the combined light. The circuitry adjusts current applied to at least one of the emitters based on an intensity of the light sensed. Also, a device comprising emitters, a circuit board and a sensor, at least one of the emitters being positioned on the first circuit board and the sensor being spaced from the circuit board. Also, a lighting device comprising emitters, a sensor, and circuitry which adjusts current applied an emitters based on detection by the first sensor, the circuitry comprising a differential amplifier circuit. Also, a lighting device, comprising light emitters and circuitry which adjusts current applied to only some of the emitters based on ambient temperature. Also, methods of lighting. | 12-18-2008 |
20080315791 | HYBRID GAS DISCHARGE LAMP-LED LIGHTING SYSTEM - A lighting system and method combine at least one LED and at least one gas discharge lamp within a common housing. The lighting system includes a control system to dependently operate each LED and each gas discharge lamp during overlapping, non-identical periods of time. In at least one embodiment, the control system can provide light output by activating LEDs during gas discharge preheating operations and thus extend the useful life of each gas discharge lamp. When dimming the lighting system, the control system can reduce current to the gas discharge lamps and one or more gas discharge lamps can be phased out as dimming levels decrease. As dimming levels decrease, one or more of the LEDs can be activated or groups of LEDs can be phased in to replace the light output of the dimmed gas discharge lamps. Thus, the lighting system can reduce power consumption at low dimming levels. | 12-25-2008 |
20080315792 | METHOD AND CIRCUIT FOR CORRECTING A DIFFERENCE IN LIGHT OUTPUT AT OPPOSITE ENDS OF A FLUORESCENT LAMP ARRAY - A method and electrical circuit corrects a difference in light output at opposite ends of a fluorescent lamp array. An electrical circuit for correcting a difference in light output at the ends of a fluorescent lamp array includes a microcontroller and firmware for generating a first pulse-width modulated inverter switch control signal having a first duty cycle that may be varied by computer program instructions executed by the microcontroller. An inverter bridge driver is coupled to the microcontroller for generating a switching signal for a first inverter bridge from the first pulse-width modulated inverter switch control signal to generate a first inverter voltage having a magnitude determined by the first duty cycle. | 12-25-2008 |
20080315793 | METHOD AND FIRMWARE FOR CONTROLLING VOLTAGE AND CURRENT IN A FLUORESCENT LAMP ARRAY - A method and firmware for controlling voltage and current in an electrical load includes steps of calculating a numerically quantized duty cycle of a pulse-width modulated, digital switch control signal by firmware in an inverter voltage microcontroller as a function of an inverter voltage and controlling the inverter voltage by adjusting the duty cycle of the digital switch control signal to generate a load current in the electrical load. | 12-25-2008 |
20090015178 | LED driver and control method thereof - A LED driver providing a LED lighting current to a LED path, extracts the LED lighting current information from the LED path to produce a first signal including an AC component and a DC component, and extracts the DC component information of the first signal to produce a second signal to regulate an average of the LED lighting current. This LED driver implements real constant average current regulation for a LED lighting apparatus, eliminates the need of output capacitor as well as rectifier diode in most applications to simplify the circuit of the power stage, and is applicable to power stages of various modes. | 01-15-2009 |
20090021187 | Apparatus for the Control of Lighting and Associated Methods - A lighting controller arranged to drive one or more light emitting semiconductors, the controller comprising a current source and/or a voltage source and a current and/or voltage sensor wherein the controller is arranged to drive the or each light emitting semiconductor using a substantially constant current or voltage and further arranged to either monitor the actual current passing through the light emitting semiconductor and the controller being arranged to monitor the voltage such that the disconnection or occurrence of faults within the or each light emitting semiconductor can be detected; or monitor the actual voltage across the light emitting semiconductor and the controller being arranged to monitor the current such that the disconnection or occurrence of faults within the or each light emitting semiconductor can be detected. | 01-22-2009 |
20090026979 | Lighting load management system for lighting systems having multiple power circuits - A lighting control system is provided for a space that is equipped with multiple lamps for illuminating the space and multiple power circuits for supplying power to different groups of the lamps. The control system stores information relating to the past illumination of the lamps in each of the different groups. The system detects conditions or events that indicate that increased illumination of the space by the lamps is needed, and produces a control signal in response to the detection of a condition or event that indicates that increased illumination of the space by the lamps is needed. In response to the control signal, the system supplies power to at least one of the power circuits, which is selected on the basis of the stored information, to turn ON the group of lamps receiving electrical power from that power circuit. | 01-29-2009 |
20090033246 | LIGHT EMITTING DIODE LAMP - A light emitting diode (LED) lamp includes a lamp body, a current control circuit, and an LED array disposed inside the lamp body. The LED array is electrically connected to the current control circuit. The LED array includes a carrier, a plurality of first LEDs disposed on the carrier for emitting a first light, and a plurality of second LEDs disposed on the carrier for emitting a second light. The first light and the second light have a same color but different color temperatures. The above-mentioned LED lamp provides lights with different color temperatures. | 02-05-2009 |
20090045757 | DISCHARGE LAMP LIGHTER - A discharge lamp lighter has an abnormality detecting circuit | 02-19-2009 |
20090058322 | ADAPTIVE CONTROL APPARATUS AND METHOD FOR A SOLID STATE LIGHTING SYSTEM - The present invention provides a method and apparatus for adaptive control of a solid-state lighting system consisting of one or more groups of one or more light-emitting elements The invention comprises a voltage control device to provide each group with an independently controllable voltage A feedback system to detect and generate a signal representative of drive currents through the one or more groups A computing device then adaptively evaluates, based on the signal, a required voltage that achieves a desired respective drive current in each of the one or more groups. | 03-05-2009 |
20090085500 | SYSTEMS AND METHODS FOR PROVIDING AN OEM LEVEL NETWORKED LIGHTING SYSTEM - The present application is generally directed to systems and methods for control and management of lighting components connected in a network. A user specified rule is executed to control lighting effects in a lighting network which comprises an interface module in communication with one or more lighting control modules. The interface module may receive a rule for controlling a lighting network. The rule may comprise a user identified input and a user specified lighting effect to occur responsive to the user identified input. The interface module detects receipt of the user identified input and executes the rule to trigger the user specified lighting effect via the one or more lighting control modules. | 04-02-2009 |
20090091271 | Lighting Assemblies for Vending Machines - Display cases having lighting assemblies and methods of illuminating display cases with such lighting assemblies. Embodiments of the lighting assemblies may be used in display cases of any type and particularly in those where the purchaser selects via an external mechanism (e.g., buttons) a product from a variety of products stored inside the display, such as a vending machine. Lighting assemblies are installed within a vending machine, such as on or within the vending machine shelves or product dividers, and their light emission controlled depending on the product being selected from the vending machine. In on embodiment, all light sources within the vending machine except those illuminating the selected product are dimmed. In this way, the product being selected by the purchaser can be emphasized. In other embodiments, color or multi-color LEDs are used to emit light that best compliments the color of products housed within the vending machine. | 04-09-2009 |
20090096387 | DRIVER SYSTEM AND METHOD FOR MULTIPLE COLD-CATHODE FLUORESCENT LAMPS AND/OR EXTERNAL-ELECTRODE FLUORESCENT LAMPS - Driver system and method for multiple cold-cathode fluorescent lamps and/or external-electrode fluorescent lamps. According to an embodiment, the present invention provides a system for driving a plurality of cold-cathode fluorescent lamps. The system includes a subsystem configured to receive at least a DC voltage and generate a first AC voltage in response to at least the DC voltage. The system also includes a power converter configured to receive the first AC voltage and convert the first AC voltage to at least a second AC voltage. The system further includes a plurality of current balancing devices. Each of the plurality of current balancing devices is configured to receive two currents and balance the two currents. The plurality of current balancing devices includes at least a first current balancing device, a second current balancing device, and a third current balancing device. In addition, the system includes a plurality of lamp pairs. | 04-16-2009 |
20090108774 | BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY APPARATUS HAVING THE SAME - In a backlight unit and an LCD apparatus having the backlight unit, in which the backlight unit includes a plurality of lamps and an inverter, the inverter provides the lamps with current. The inverter reduces current provided to the lamps to turn off the lamps. Therefore, currents are gradually decreased to reduce noise generated by the transformer when the lamps are turned off. | 04-30-2009 |
20090108775 | LED DRIVER WITH ADAPTIVE ALGORITHM FOR STORAGE CAPACITOR PRE-CHARGE - A method is provided for driving a plurality of light emitters in a plurality of output paths with each output path including at least one light emitter. The method includes the steps of applying a supply voltage level to a plurality of output paths; generating a current for each path during a period of a predetermined length for the output path; sensing a current level for each output path during the period; comparing each sensed current level with a reference level; increasing the supply voltage level if the sensed current level is lower than the reference level; determining a lowest supply voltage level for the worst case output path; and using the lower supply voltage level as a common supply voltage level for all output paths. | 04-30-2009 |
20090115348 | Light emitting device - The luminance of different colors of light emitted from EL elements in a pixel portion of a light emitting device is equalized and the luminance of light emitted from the EL elements is raised. The pixel portion of the light emitting device has EL elements whose EL layers contain triplet compounds and EL elements whose EL layers contain singlet compounds in combination. The luminance of light emitted from the plural EL elements is thus equalized. Furthermore, a hole transporting layer has a laminate structure to thereby cause the EL elements to emit light of higher luminance. | 05-07-2009 |
20090121652 | LIGHT SOURCE MODULE, BACKLIGHT ASSEMBLY HAVING THE SAME, DISPLAY DEVICE HAVING THE SAME AND METHOD FOR REDUCING NUMBER OF WIRES USED IN INTERCONNECT CABLE OF THE SAME - A light source module includes a driving substrate, a plurality of light source blocks and a currents control element. The light source blocks are disposed on the driving substrate, and each of the light source blocks includes at least one light source. The currents control element is disposed on the driving substrate, and has channel terminals for individually controlling driving currents passed through at least two light source blocks. The channel terminals are electrically connected to the at least two light source blocks, respectively. The currents control element is disposed on the driving substrate and individually controls the driving currents applied to the light source blocks, so that a number of wires of a connection cable connected to a light source driving connector is less than the number of light source drive currents being individually controlled. | 05-14-2009 |
20090128053 | Apparatus and Technique for Modular Electronic Display Control - The present invention discloses apparatus and techniques for modular backlighting control of a display. The display includes a number of strings of LEDs. The display is divided into several sections, and each section includes one or more strings of LEDs. A local controller is assigned to each section. The local controller receives feedback signals from the strings of LEDs in its sections and controls the drive voltages and drive currents of those strings. The local controllers communicate with each other and also with the main system controller. | 05-21-2009 |
20090128054 | Extended Life LED Fixture with Central Controller and LED Lamps - An LED fixture includes multiple LED drivers and multiple LED lamps so that the lifetime of the fixture is a multiple of the lifetime of a conventional fixture that uses only a single LED driver. A central controller activates and deactivates the LED drivers so that the different LED lamps are driven sequentially. An optional multi-lamp LED driver concurrently drives multiple LED lamps that have been previously driven by the LED drivers. | 05-21-2009 |
20090146586 | Power supply for external electrode fluorescent lamps - The present invention provides a power supply circuit for providing power for a plurality of external electrode fluorescent lamps (EEFLs) connected in parallel, comprising a controllable voltage regulator for receiving an input power signal and for providing a regulated voltage signal, an output inverter and a resonant circuit connected to receive the regulated voltage signal and for providing a resonant frequency signal, a voltage transformation stage for receiving the resonant frequency signal for transforming the resonant frequency signal to a power voltage signal capable of driving a plurality of EEFLs connected in parallel, wherein the controllable voltage regulator is connected to receive the resonant frequency signal and is responsive thereto to keep the resonant frequency signal within an acceptable operating voltage range to power the EEFLs independently of the number of EEFLs connected to receive the power voltage signal. | 06-11-2009 |
20090179589 | ARRANGEMENT PROVIDED WITH A VOLTAGE CONVERTER FOR SUPPLYING VOLTAGE TO AN ELECTRICAL CHARGE AND ASSOCIATED METHOD - The invention specifies an arrangement with a voltage converter ( | 07-16-2009 |
20090179590 | BI-DIRECTIONAL LIGHT EMITTING DIODE DRIVE CIRCUIT IN PULSED POWER PARALLEL RESONANCE - The present invention is characterized by using capacitive, inductive or resistive impedance to constitute the first impedance which is series connected with the second impedance constituted by parallel connecting the capacitive and inductive impedances that appears parallel resonance with the pulsed period to receive pulsed power, thereby to form a divided bidirectional power at the two ends of the first and second impedances, so as toe drive the bidirectional conducting light emitting diode. | 07-16-2009 |
20090184664 | METHOD OF DRIVING LIGHT SOURCES, DEVICE FOR DRIVING LIGHT SOURCES, AND DISPLAY DEVICE HAVING THE SAME - One or more embodiments of the present disclosure provide a method for driving light sources, a device for driving light sources and a display device having the device for driving the light sources. Power information is read based on position information on the light sources to output a light source control signal transmitting the power information. The power information determines a level of power applied to each of the light sources. Externally provided input power is changed into a plurality of driving powers having a level changed based on the light source control signal. The driving powers are applied to the light sources, respectively. According to one aspect of the present disclosure, uniformity of luminance distribution of a display panel may be improved. | 07-23-2009 |
20090184665 | Drive Device for Leds and Related Method - A LED driver arrangement includes a switching-mode stage ( | 07-23-2009 |
20090184666 | FREQUENCY CONVERTED DIMMING SIGNAL GENERATION - There is provided a lighting control circuit comprising a duty cycle detection circuit, an averaging circuit, a waveform generator and a comparator circuit. The duty cycle detection circuit generates a first periodic waveform having a duty cycle and frequency corresponding to an input waveform duty cycle and frequency. The averaging circuit generates a first signal having a voltage level corresponding to the duty cycle of the first periodic waveform. The waveform generator outputs a second periodic waveform having a frequency different from the input waveform frequency. The comparator circuit compares the second periodic waveform with the first signal to generate an output waveform having a duty cycle corresponding to the input waveform duty cycle and a frequency corresponding to the frequency of the second periodic waveform. Also, there are provided methods. | 07-23-2009 |
20090184667 | VOLTAGE SUPPLY MODULE AND BACKLIGHT ASSEMBLY HAVING THE SAME - In a voltage supply module and a backlight assembly having the same, a converter is disposed on a first face of a board and converts basic voltage into driving voltage. A capacitor includes at least one first electrode connected to an output line of the converter and at least one second electrode disposed to be spaced apart from the first electrode along a direction substantially parallel with the first face. A plurality of the second electrodes are disposed on the board between the first electrodes. The first and second electrodes form a ballast capacitance. | 07-23-2009 |
20090184668 | HIGH EFFICIENCY BOOST LED DRIVER WITH OUTPUT - A current driver for powering a string of LEDs has a boost converter coupled to an input voltage source. A voltage multiplier circuit is coupled to the boost converter and to the string of LEDs. A latch is provided having an output coupled to the boost converter. A current sense element is coupled to the boost converter. A current comparator is provided having an output coupled to a first input of the latch, a first input coupled to the current sense element, and a second input coupled to a reference current. A zero-volt detector circuit is provided having an output coupled to a second input of the latch and an input coupled to the boost converter and the voltage multiplier circuit. | 07-23-2009 |
20090184669 | LIGHT EMITTING DIODE LAMP - A light emitting diode (LED) lamp including a lamp body, a current control circuit, a color temperature management unit electrically connected to the current control circuit, and an LED array disposed inside the lamp body. The LED array is electrically connected to the current control circuit. The LED array is capable of providing light having different color temperatures. The current control circuit drives the LED array to change color temperature thereof automatically in accordance with an output of the color temperature management unit. | 07-23-2009 |
20090189543 | METHOD OF LOCAL DIMMING, BACKLIGHT ASSEMBLY FOR PERFORMING THE METHOD AND DISPLAY APPARATUS HAVING THE BACKLIGHT ASSEMBLY - In order to perform local dimming, a driving dimming duty cycle is generated using a target gamma curve (TGV), wherein the driving dimming duty cycle corresponds to a representative grayscale value (RGV) of each of a plurality of dimming unit areas. Each of a plurality of light unit blocks of a light source is driven based on the driving dimming duty cycle, wherein the light unit blocks correspond to the dimming unit areas, respectively. Therefore, a display apparatus may display an image having a higher contrast ratio than normal. | 07-30-2009 |
20090189544 | System with flicker control and method of reducing flicker generated by a system - A system is disclosed that is designed to be connected to an electrical power supply. The system comprises a plurality of electric load component comprising stages for cooperatively producing an output (T | 07-30-2009 |
20090195190 | Systems and Methods for Powering a Light Emitting Diode Lamp - In one embodiment, the present invention includes an electronic circuit for providing a power current to an LED lamp. The electronic circuit comprises a logic drive circuit, a VCO, a power switch, and a first current sensor. The VCO is coupled to provide a first logic control signal to the logic drive circuit. The power switch has a first terminal and second terminal coupled to deliver the power current to the LED lamp and a control terminal coupled to receive a power control signal from the logic drive circuit. The first current sensor is coupled to sense a peak current passing through the power switch and coupled to provide a second logic control signal to the logic drive circuit. | 08-06-2009 |
20090200963 | Lighting Controller for a Vehicle Lamp - A lighting controller has current driving means which include a shunt resistor connected in series to each of multiple LEDs to detect an LED driving current, a PMOS transistor connected to the positive electrode side of each of the LEDs, and an amplifier for sending an output according to the result of comparison between the respectively detected driving current values and a reference value, and which subject each of the PMOS transistors to ON/OFF operation. Control means includes a Zener diode ZD | 08-13-2009 |
20090206773 | Interactive led lighting system for entertainment and network thereof - An interactive LED lighting system for entertainment and a network thereof comprise a plurality of LED light controllers being capable of connecting with a wireless operating end, a plurality of kinetic energy sensors or wireless remote controls for receiving commands output by the wireless operating end, the kinetic energy sensors or the wireless remote controls so as to generate RGB signals and in turn make LED lamps connected with the LED light controllers change colors they emit. | 08-20-2009 |
20090212717 | Power Supply System and Method for the Operation of an Electrical Load - A current source arrangement is specified, in which at least one branch, comprising a current source ( | 08-27-2009 |
20090212718 | Illumination control system - An illumination control system includes lighting apparatuses connected to a communications line and a number of functional units of plural kinds functioning to detect information from ambient environments of the lighting apparatuses. Each lighting apparatus includes a lamp, an illumination circuit, a communication unit, a control unit, and a unit attaching part to which the functional unit is detachably attached. Each lighting apparatus belongs to one or more of plural groups corresponding to the functional units, the groups being operated based on information detected by the respective functional units. A functional unit having a detecting function corresponding to an operation of each group is attached to each unit attaching part of at least one lighting apparatus of each group, and each communication unit of the at least one lighting apparatus sends the control signal including information detected by the corresponding functional unit to another lighting apparatus in the same group. | 08-27-2009 |
20090212719 | DISPLAY APPARATUS THAT CAN BE MOVED IN SPACE - A medical examination or treatment facility comprising at least one display facility that can be moved in space is provided. The facility includes one or a plurality of lighting facilities arranged in a distributed manner to illuminate the space. It is possible to change the brightness and/or position of the individual lighting facilities automatically by a control or regulation facility as a function of a captured spatial position and/or orientation of the object, in particular of the display facility. | 08-27-2009 |
20090218960 | STEP-WISE INTENSITY CONTROL OF A SOLID STATE LIGHTING SYSTEM - A solid state lighting system controls overall light output level in a step-wise manner by discretely controlling the ON/OFF state of its light emitters. Solid state emitters that are ON at a given time are set and kept at a level intended to produce a desired output characteristic, e.g. at a level to produce a described color of light. The system utilizes optical processing of the generated light, for example by diffuse reflection in an optical integrating cavity, sufficient to convert the point source output(s) from the emitting elements into a uniform virtual source output. The virtual source output appears uniform regardless of how many emitters are ON or OFF, and only the perceptible intensity of the light output changes with the number of emitters that the system has ON. | 09-03-2009 |
20090230882 | Architecture and technique for inter-chip communication - The present invention involves an electrical system in which an analog signal channel passes through various integrated circuit chips (ICs). The channel can carry one or more analog signals. Each IC can modify the signal(s) passing through it and pass it on to another IC or system component. The channel can be programmable. Each IC can include a comparator or a multiplexor to receive the channel signal from another IC or system component and to modify the received signal before transmitting it to another IC or system component. The comparator or the multiplexor can be programmable and can be selectively configured to compare the incoming signal from the channel with a variety of other signals and thresholds, or to simply act as a flow through gate and allow the signal to pass without any modification. The comparison can determine the output of the comparator. The operation and programming of the comparators, the multiplexors and the channel can be centrally controlled by a system controller, can be independently controlled by the ICs, or a combination thereof. | 09-17-2009 |
20090230883 | Stacked LED Controllers - A driver for driving a plurality of light emitting diodes (LEDs) is formed of a plurality of LED controllers connected in series between a power supply and a reference voltage. Each controller drives one or more LEDs directly connected to it. Each controller has a voltage input terminal coupled to an output terminal of an adjacent upstream controller, and an output terminal coupled to the voltage input terminal of an adjacent downstream controller. Each controller has a normally-on bypass switch coupled between its voltage input terminal and the voltage input terminal of the adjacent upstream controller. The bypass switch completely bypasses the adjacent upstream controller when the adjacent downstream controller detects that its input voltage is below a threshold insufficient to drive the LED in the adjacent upstream controller. The bypass switch is turned off if the voltage is above the threshold. | 09-17-2009 |
20090230884 | DEVICE AND METHOD FOR CONTROLLING A LIGHTING SYSTEM BY PROXIMITY SENSING OF A SPOT-LIGHT CONTROL DEVICE AND SPOTLIGHT CONTROL DEVICE - The invention relates to controlling a lighting system by proximity sensing of a spotlight control device, particularly to controlling a spotlight generated by a lighting system such as a large LED lighting array by means of a spotlight control device. The invention provides a device ( | 09-17-2009 |
20090230885 | LED CONTROL DEVICE - An LED controller is provided that can easily control light-on testing of LEDs. A super voltage can be added to a signal including a low voltage and a high voltage. When the super voltage is not detected, LED driving circuit is operated in normal mode. When the super voltage is detected, LED driving circuit is operated in test mode. In test mode, the LEDs are turned on by a test signal directly input to LED driving circuit instead of by light emission data sent from shifter register to storage circuit. Accordingly, light-on testing of LEDs can be carried out easily. | 09-17-2009 |
20090230886 | DRIVER DEVICE THAT STABILIZES CURRENT AND AUTOMATICALLY REGULATES VOLTAGE OF A LIGHT EMITTING DIODE - A driver device that stabilizes current and automatically regulates voltage of a light emitting diode is capable of automatically regulating the voltage and stabilizing the current in accordance with a voltage demand, so as to provide the proper voltage and the stable current, for being applied to control color and shading of the light emitting diode. According to the actual voltage required by the light emitting diode, a current control unit controls a current-controlled transistor to output the stable current, so as to fit with the actual voltage requirement and stably control the changes of color and shading. Therefore, the requirements of energy saving, of that multiple light emitting diodes can be fitted with at a same time, and of that operating temperature can be decreased, are achieved. | 09-17-2009 |
20090237006 | APPARATUS, SYSTEM, AND METHOD FOR DEVICE GROUP IDENTIFICATION - An apparatus, system, and method are disclosed for identifying and differentiating among multiple groups of devices, comprising at least two LEDs, a controller, and a blending medium. The at least two LEDs emit a wavelength of light that is different from a wavelength of each other LED. The controller drives the at least two LEDs to each emit light at specified intensities in response to a color identifying value. The blending medium combines the light emitted by the at least two LEDs into an identifying color that identifies a group of devices. | 09-24-2009 |
20090237007 | LIGHT-EMITTING DIODE DRIVING CIRCUIT AND SECONDARY SIDE CONTROLLER FOR CONTROLLING THE SAME - A light-emitting diode (LED) driving circuit and a secondary side controller for controlling the same control an output voltage of the LED driving circuit at a first driving voltage or a second driving voltage. When the output voltage is controlled at the first driving voltage, an LED module driven by the LED driving circuit is in a stably lighting state; and when the output voltage is controlled at the second driving voltage, the output voltage is approximately a threshold voltage of the LED module but higher than zero volt, so that the LED module is close to not emitting light. Therefore, in a dimming operation, the variation of voltage applied across the LED module is smaller than that in the conventional LED driving circuits to thereby protect the LED module against an excessive voltage stress and avoid the problem of inaccurate dimming. | 09-24-2009 |
20090237008 | LEFT/RIGHT TURN INDICATOR FOR VEHICLE - In response to a left turn operation of a turn signal lever when left and right headlights provided on the left and right sides of a front part of a vehicle are turned on, a left turn signal light is turned on, and, at the same time, a left main light is made into a turned-off state corresponding to left turn indication. When a right turn operation of the turn signal lever is performed, a right turn signal light is turned on, and, at the same time, a right main light is made into a turned-off state corresponding to right turn indication in response to this operation. In a dark environment such as nighttime, oncoming vehicles and pedestrians can surely know the left or right turning of the vehicle based on the change in the main lights from a normal lighting state to the turned-off state. | 09-24-2009 |
20090251070 | Electronic Zoom Portable Electric Lamp - The portable electric lamp, for example a headlamp, is a lamp with light-emitting diodes comprising at least two distinct light sources ( | 10-08-2009 |
20090251071 | Driving Multiple Parallel LEDs with Reduced Power Supply Ripple - An LED driver is disclosed that drives LEDs connected in parallel. Instead of applying current to all the parallel-connected LEDs at the same time, under control of a common PWM brightness control signal, the application of current to each parallel path is staggered by using staggered brightness control signals. The turning on of the LEDs in the different parallel paths will have the same duty cycle but will be out of phase. This reduces ripple in the power supply by reducing the magnitude of the instantaneous current sink. In one embodiment, a shift register contains a binary representation of the PWM duty cycle, and a clock shifts the bits along the shift register. The PWM brightness control signals for each parallel path of LEDs are tapped from different positions along the shift register so that the PWM brightness control signals are identical but staggered. | 10-08-2009 |
20090251072 | DC Distribution System - A direct current power system according to one non-limiting embodiment includes a direct current power source operable to distribute a direct current voltage throughout at least one structure, and at least one controller operable to selectively couple a direct current load to the direct current voltage in response to a wireless signal from an energy-harvesting switch. | 10-08-2009 |
20090251073 | Fluorescent Task Lamp with Optimized Alignment and Ballast - A handheld fluorescent task lamp comprising a housing assembly having a housing and a tubular lens body enclosing compact fluorescent bulbs, an elongated spine configured for slidingly supporting the lens body, and a resilient bulkhead for cushioning the compact fluorescent bulbs in the lens body; an electronic ballast circuit within the housing comprising a power supply, a self-starting electronic driver circuit operable to start and run at least first and second CFL bulbs; a bulb accommodation circuit that enables operation of the electronic ballast circuit with either starter type or non-starter type and regardless whether one or both CFL bulbs are connected to the driver circuit; and an illumination assembly, wherein the CFL bulbs are oriented with respect to each other such that an enhanced forward emission field is provided. | 10-08-2009 |
20090251074 | ANALOG-TO-ANALOG LIGHTING APPARATUS AND METHODS - The invention provides a system of generation of multi-channel analog output signals, from a single analog input signal, and the controlled activation of peripheral devices responsive to the multi-channel analog output signals. A single-channel to multi-channel analog-to-analog converter is provided to convert the single analog input signal to multiple output channels. Uni-directional coupling is used for coupling and mixing the multi-channel outputs and transferring the mixed outputs to a data bus. Signals on the data bus are used to drive the multiple peripheral devices. | 10-08-2009 |
20090261755 | INVERTER CIRCUIT, BACKLIGHT DEVICE AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - An inverter circuit for a backlight device includes an inverter transformer which supplies a high AC voltage to a plurality of discharge tubes, a filter circuit connected to an output terminal of the inverter transformer, and an abnormal discharge detection circuit. The filter circuit passes a current signal having a high frequency component of the high AC voltage to the abnormal discharge detection circuit, and the abnormal discharge detection circuit detects an abnormal discharge current based on the current signal. | 10-22-2009 |
20090267536 | Fluorescent lamp driver circuit - A fluorescent lamp driver circuit is provided. The fluorescent lamp driver circuit uses reversed current detecting signal to achieve feedback control and circuit protection so as to simplify the driver circuit and reduces the number of the required electronic components. The driver circuit needs a single control unit to control the whole circuit, which not only reduces cost, but also simplifies circuit design. | 10-29-2009 |
20090267537 | Motion activated removable blinking shoe light - A motion activated removable waterproof multi-colored blinking shoe light comprising a decorative top which attaches to a shoe by means of any appropriate fastening means such as a thin rubber or plastic snap, loop for receiving a shoe lace, any other loop, clasp, or pinching device, for example, is provided. | 10-29-2009 |
20090267538 | LIGHTING SYSTEM FOR AVIONICS APPLICATIONS AND CONTROL METHOD THEREOF - Disclosed herein is a lighting system, in particular for an avionics apparatus, having at least a light source and a control unit coupled to the light source and controlling operation thereof based on a management PWM signal; the management PWM signal may have a shape such as to limit radio frequency emissions. According to an embodiment, the lighting system has an interface unit coupled to the light source and receiving the management PWM signal from the control unit; during a lighting management mode, the management PWM signal carries management information for controlling the light source, and the interface unit is operable to decode the management information, for driving the light source; in particular, the control unit codes the management information using a first waveform parameter of the management PWM signal, and at least a second waveform parameter of the management PWM signal, different from the first waveform parameter. According to a further embodiment, the lighting system has at least one storage element coupled to the light source, and a transmission protocol is associated to the management PWM signal, envisaging a bidirectional communication between the control unit and the interface unit, by means of which management data are read from, and/or written to, the storage element. | 10-29-2009 |
20090267539 | BACKLIGHT MODULE - The invention provides a backlight module comprising a plurality of lighting units and at least one balance transformer. Each of the lighting units comprises a first electrode terminal and a second electrode terminal, and the first electrode terminals are coupled to a power source. The at least one balance transformer is coupled to at least one of the second electrode terminals. The primary side of the at least one balance transformer could be connected to each other to form a close loop. Accordingly, the backlight module could be used for large size panel. | 10-29-2009 |
20090267540 | Modular Lighting Systems - 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. | 10-29-2009 |
20090273302 | ARTIFICIAL WINDOW - Disclosed is an artificial window ( | 11-05-2009 |
20090273303 | Synchronous light emitting diode lamp string controller - The present invention discloses a synchronous LED lamp string controller, comprising a clock synchronous circuit to receive a reference signal with a constant frequency, and based on which, to generate a system clock; a counter circuit to counter the system clock and generate a clock signal; a control logic circuit to receive said clock signal to generate a control signal; and a driver circuit to receive said control signal to drive at least a light emitting diode. | 11-05-2009 |
20090278476 | DEVICE FOR GENERATING LIGHT - An illumination system ( | 11-12-2009 |
20090284177 | METHOD AND APPARATUS FOR CONTROLLING A VARIABLE-COLOUR LIGHT SOURCE - Disclosed is a control device for controlling a variable-colour light source, the variable-colour light source comprising a plurality of individually controllable colour light sources. The control device comprises a control unit for generating, responsive to an input signal indicative of a colour and a brightness, respective activation signals for each of the individually controllable colour light sources. The control unit is configured to generate the activation signals from the input signal and from predetermined calibration data indicative of at least one set of colour values for each of the individually controllable light sources. | 11-19-2009 |
20090284178 | Circuit Arrangement and Method for Voltage Conversion - A circuit arrangement ( | 11-19-2009 |
20090295308 | Method for Operating High-Pressure Lamps Without Hotstarting and Luminaire Having Two High-Pressure Discharge Lamps - High-pressure discharge lamps can only be restarted in the hot state at a very high starting voltage. In order to avoid hotstarting, a method for operating high-pressure discharge lamps without hotstarting comprises two high-pressure discharge lamps ( | 12-03-2009 |
20090295309 | FEEDBACK CONTROL OF LIGHTING-EMITTING BLOCKS IN A DISPLAY APPARATUS - To drive light-emitting blocks, currents are sensed through the light-emitting blocks arranged in an M×N matrix (wherein M and N are natural numbers), wherein M rows are connected to a row switching part and N columns are connected to a column switching part. The light-emitting blocks are driven by a local dimming method with feedback control responsive to the sensed currents. | 12-03-2009 |
20090295310 | Dual head inspection lamp - A dual head lamp having a housing, a first head removably attached to the first end of the housing, and a second head removably attached to the second end of the housing. The first head includes at least one non-white light emitting diode configured to emit light with a wavelength of between 250 nm and 500 nm for fluorescent inspection. The second head includes at least one light emitting diode the emits light having a wavelength that is different than the wavelength of the light emitted from the non-white light emitting diode in the first head. The second head is preferably arranged to emit light in a direction opposite the direction of the non-white light emitting diode. A removable battery compartment is within the housing and configured to hold one or more batteries. A button in communication with a circuit allows for control of power to the light emitting diodes. | 12-03-2009 |
20090302781 | COLOR MANAGER FOR BACKLIGHT SYSTEMS OPERATIVE AT MULTIPLE CURRENT LEVELS - A color manager for use with a luminaire constituted of a plurality of different colored light emitting diode based sub-luminaires arranged to produce a combined light. The color manager is constituted of a sampler arranged to output an electrical representation of the optical output of the luminaire, a converter coupled to the output of said sampler and operatively associated with a current selector arranged to select the driving current level of the luminaire from a plurality of current levels. The converter is arranged to convert said electrical representation to a pre-determined calorimetric system in cooperation with a calibration matrix whose values are selected responsive to the selected driving current level. The color manager further comprises a driver operatively associated with the luminaire, the converter and current selector and arranged to drive the luminaire in accordance with the driving current level as selected by the selector. | 12-10-2009 |
20090302782 | SYSTEMS AND METHODS FOR RULES BASED, AUTOMATED LIGHTING CONTROL - A lighting control system comprising a plurality of intelligent switches designed to replace a conventional light switch, each of the intelligent switches including a receiver configured to receive communication signals that include rules based instructions for controlling one or more lighting circuits; a circuit interrupter configured to control the amount of current flowing to a lighting circuit; a memory configured to store the rules based instructions; and a processor coupled with the receiver, memory, and circuit interrupter, the processor configured to control the operation of the circuit interrupter based on the rules based instructions stored in memory. | 12-10-2009 |
20090315480 | BRIGHTNESS-ADJUSTABLE LED DRIVING CIRCUIT - A brightness-adjustable LED driving circuit includes a rectifying and filtering circuit, a power factor correction power conversion circuit, and a detecting and controlling circuit. The rectifying and filtering circuit is used for filtering and rectifying a brightness adjusting voltage into a first DC voltage. The power factor correction power conversion circuit is electrically connected to the rectifying and filtering circuit and at least one LED string for generating an output current required for powering the at least one LED string. The detecting and controlling circuit detects phase data of the brightness adjusting voltage and the output current generated by the power factor correction power conversion circuit. The detecting and controlling circuit generates a control signal to the power factor correction controller according to the phase data of the brightness adjusting voltage, so that the magnitude of the output current is changed according to the phase data of the brightness adjusting voltage. | 12-24-2009 |
20090315481 | METHOD AND DEVICE FOR LED CHANNEL MANAGMENT IN LED DRIVER - Disclosed are example open channel detection techniques at a light emitting diode (LED) driver of an LED system. The LED driver does not enable its LED channels before normal operation so as to inhibit current flow through the LED channels during start-up. While the LED channels are disabled, the LED driver compares the voltages at the LED channel inputs with a predetermined voltage to determine whether an operational LED string of an associated LED panel is connected to the LED channel. In the event that an LED channel is determined to be an “open” channel, the LED driver further disables the LED channel for the following normal operational mode. Otherwise, if the LED channel is determined to be connected to an operational LED string, the LED driver enables the LED channel for the normal operational mode, during which the LED channel can be selectively activated for light output subject to display data for the LED panel. | 12-24-2009 |
20090322251 | LARGE AREA LIGHTING - Within lighting tiles ( | 12-31-2009 |
20090322252 | LED DRIVING CIRCUIT AND A MOSFET SWITCH MODULE THEREOF - An LED driving circuit and a MOSFET switch module thereof is disclosed, and the MOSFET switch module which is used to control a current of the LED driving circuit. The present invention employs a voltage clamping device to clamp the voltage level of the drain of transistor in the MOSFET switch module when being turned off. Via this way, the requirement for the withstand voltage of the transistor is lowered, and so the cost and power consumption thereof is reduced. | 12-31-2009 |
20090322253 | LED Lighting System having a Reduced-Power Usage Mode - An LED lighting system, with first and second types of LEDs of different efficacies, has a reduced-power usage mode. A control system independently controls first and second control groups of first and second types of LEDs, respectively. The control system has one or more modes including a reduced-power usage mode for decreasing the overall power consumption of the lighting system while maintaining a light level of at least a predetermined percentage of the level present when the first control group of LEDs operates at a power level between less-than-full power and full power and the second control group is off. The predetermined percentage is 50. The control system decreases the overall power consumption of the lighting system in the reduced-power usage mode by turning off or dimming the first control group and turning on the second control group to at least some extent. | 12-31-2009 |
20100013413 | Light Emitting Device - A light emitting device capable of decreasing manufacturing cost includes a power generator for generating a first DC power, a first DC controller for generating a control signal, a DC-DC transformer coupled to the power generator and the DC control unit, for transforming the first DC power into a second DC power according to the control signal, a plurality of LED loads each including a plurality of LED sequences coupled to the DC-DC transformer, for emitting light according to the second DC power, and a plurality of LED drivers coupled to the plurality of LED loads, for adjusting output currents of the LED sequences to achieve constant output currents. | 01-21-2010 |
20100013414 | Lamp and Bulb For Illumination and Ambiance Lighting - An Edison-style light bulb ( | 01-21-2010 |
20100019694 | PROTECTION CIRCUIT AND DISCHARGE LAMP DRIVING DEVICE EMPLOYING THE SAME - A discharge lamp driving device includes a power stage circuit, a transformer circuit, a control circuit, a feedback circuit and a lamp protection circuit. The lamp protection circuit includes a current sensing circuit, a reference voltage selecting circuit, a comparing circuit and a protection signal generating circuit. The current sensing circuit senses current signals flowing through the lamps, and transforms the current signals to voltage signals. The reference voltage selecting circuit is connected to the current sensing circuit. The comparing circuit is connected to the current sensing circuit and the comparing circuit. The protection signal generating circuit is connected between the comparing circuit and the control circuit. The control circuit is connected to the comparing circuit. | 01-28-2010 |
20100019695 | Backlight driving circuit - A backlight driving circuit includes a light driving unit, which includes a constant current unit, and a light source operated by the constant current unit. The light driving unit further includes a feedback control unit and a detection circuit. The detection circuit detects the light source and outputs at least a voltage feedback signal to the feedback control unit. The feedback control unit obtains a prestored power parameter corresponding to the voltage feedback signal and outputs an adjusting signal to the constant current unit to adjust the constant current of the light source. | 01-28-2010 |
20100019696 | POWER CONVERTER - The present invention includes a first DC converter converting AC voltage, into DC voltage while correcting a power factor, and a second DC converter electrically isolating the first DC converter from an LED group load, and converting the DC voltage, into a predetermined DC voltage and supply the resultant voltage to the LED group load. The second DC converter includes a current detection circuit disposed on the secondary side, and detecting current flowing into the LED group load, an error amplifier amplifying an error between a detected current value detected and a reference current value, a signal transmission isolation element transmitting a control signal based on an output signal from the error amplifier, to the primary side, and a switching element transferring power to the secondary side through the transformer by being turned on/off according to the control signal. | 01-28-2010 |
20100026208 | Apparatus, System and Method for Cascaded Power Conversion - An apparatus, method and system are provided for power conversion to supply power to a load such as a plurality of light emitting diodes. An exemplary apparatus comprises: a first power converter stage having a first power switch and a first inductive element; a second power converter stage having a second power switch and a second inductive element; a plurality of sensors; and a controller. The second power converter stage provides an output current to the load. The controller is adapted to use a sensed input voltage to determine a switching period, and is further adapted to turn the first and second power switches into an on-state at a frequency substantially corresponding to the switching period while maintaining a switching duty cycle within a predetermined range. | 02-04-2010 |
20100026209 | LED driving circuit and method - A LED driving circuit includes a regulator to provide an output voltage to a LED light source, a current source to control the driving current of the LED light source, and a controller to detect the voltage of the current source to generate a control signal for the regulator to regulate the output voltage at a low level. There are no resistors on the current path established by the LED light source and current source, and the regulator may maintain the voltage of the current source as low as possible, thereby improving the power efficiency and reducing the power consumption. | 02-04-2010 |
20100039047 | Drive Device for Performing Electric Power Conversion by Using Switching Element - A drive device includes a primary-side rectifier circuit for rectifying a received alternating-current voltage, a first capacitor for smoothing the rectified voltage, a switching element coupled to a primary winding of a transformer, for converting the smoothed voltage into an alternating-current voltage by turning on and off to be supplied to the primary winding, a secondary-side rectifying-smoothing circuit for rectifying and smoothing an alternating-current voltage induced at a secondary winding of the transformer to be outputted to a load, a switching control circuit for turning on and off the switching element by supplying a drive voltage to a control electrode of the switching element, and a bias circuit for supplying a bias voltage to the control electrode of the switching element, based on a voltage induced at the primary winding. | 02-18-2010 |
20100045210 | Power Factor Correction in and Dimming of Solid State Lighting Devices - An apparatus and method provides a driver circuit that provides for power factor correction (PFC) to a load, such as a solid-state lighting (SSL) device, such as, for example, a light emitting diode (LED) or an array or cluster of LEDs. A programmable reference is provided in the circuit to operate in a fixed frequency peak current mode control (FFPCMC) or in a fixed frequency average current mode control (FFACMC). A driver circuit is employed to operate the SSL device using power derived from a main power source which may be DC or AC. In a FFPCMC embodiment, a programmable power reference is programmed to be a fixed DC voltage. In a FFACMC embodiment, source input current to the circuit can be programmed to be proportional to the rectified AC voltage after a bridge rectifier. | 02-25-2010 |
20100052571 | Illumination System - An illumination system includes a plurality of illumination devices and a number of sensor blocks. In each of the sensor blocks, an active sensor is provided to detect a moving object traveling within a detection area thereof and plural amplifier circuits is provided to divide a detection signal transmitted from the active sensor into plural frequency bands and for amplifying signal components of the frequency bands. Provided in a one-to-one relationship with the amplifier circuits is plural judgment units that, based on the amplified signal components of the frequency bands provided from the amplifier circuits, judges whether the moving object is travelling at a travel velocity corresponding to any one of the frequency bands. A control unit is also provided to perform a turn-on control on at least one of the illumination devices based on judgment results made by the judgment units. | 03-04-2010 |
20100052572 | LIGHT EMITTING ELEMENT DRIVING APPARATUS - The N light emitting element groups each include one or more light emitting elements. The power source circuit includes a control input terminal and supplies the power source voltage to the N light emitting element groups. The N current driving circuits, each including a feedback output terminal, generate N drive currents for driving the respective N light emitting element groups and generate main feedback voltages at the feedback output terminals based on the power source voltage. The main feedback circuit applies a main feedback signal to the control input terminal based on the N main feedback voltages. The auxiliary feedback circuit applies an auxiliary feedback signal to the control input terminal based on the power source voltage. The power source circuit adjusts the power source voltage based on at least one of the main feedback signal and the auxiliary feedback signal. | 03-04-2010 |
20100060198 | LED Lamp and Method for Producing a LED Lamp - A lamp provided with at least two LEDs of substantially the same colour and at least one driver for feeding each of said LEDs, wherein said at least one driver is adapted to feed said at least two LEDs during operation of the lamp at a different power level such that the largest difference in colour temperature of any pair of said LEDs during operation is less than the largest difference in colour temperature of any pair of said LEDs if being fed at an equal operational power level. | 03-11-2010 |
20100060199 | ILLUMINATION POI - An illumination poi is provided, comprising light emitters and light waveguides optically coupled to the light emitters. In some embodiments, the light waveguides are optical fibers. A microchip light controller, associated with the light emitters, varies the light entering the optical fibers, and facilitates spectacular light pattern upon rotation of the illumination poi in the dark. | 03-11-2010 |
20100072920 | DRIVE SYSTEM FOR ILLUMINATION DEVICE - A drive system for an illumination device includes a plurality of LEDs; an extra load; an illumination setting unit, for providing an illumination parameter such as a work cycle; a power supply unit, for providing a DC current; a microprocessor, for receiving the illumination parameter and generating a plurality of drive signals and a compensation signal according to the received illumination parameter; a plurality of first drive units, for driving the LEDs to receive the DC current in the high-level cycle for illumination; and a second drive unit, for receiving the compensation signal and outputting the DC current to the extra load according to the compensation signal. | 03-25-2010 |
20100072921 | Lighting System Utilising RJ45 Patch Lead - A luminaire has an aluminium body with an opening extending longitudinally therethrough from a front face from which, in use, light is emitted, and a rear face to which, in use, a power coupler is connectable. A circuit board is mounted in the body proximate to the front face, which circuit board carries a plurality of LEDs. A power board carrying an RJ45 socket is mounted on the rear face of the body, the power board being electrically connected to the circuit board by a pair of wires. The wires are clipped into wire guides mounted in the body. A lens shroud mounts in the opening in the body in front of the circuit board and is secured in position by screws, the lens shroud having a plurality of cylindrical apertures formed therein corresponding in number and pattern to the number and pattern of LEDs on the circuit board such that each aperture aligns with one of said LEDs, shrouding its associated LED such that the light emitted therefrom is collimated. | 03-25-2010 |
20100072922 | ELECTRONIC CIRCUIT FOR DRIVING A DIODE LOAD - An electronic circuit includes circuit portions for identifying a largest voltage drop through one of a plurality of series connected diode strings and for controlling a boost switching regulator according to the largest voltage drop. The electronic circuit can sense an open circuit series connected diode string, which would otherwise have the largest voltage drop, and can disconnect that open circuit series connected diode string from control of the boost switching regulator. Another electronic circuit includes a current limiting circuit coupled to or within a boost switching regulator and configured to operate with a diode load. Another electronic circuit includes a pulse width modulation circuit configured to dim a series connected string of light emitting diodes. | 03-25-2010 |
20100079088 | Power systems with current regulation - A power system includes a current regulator coupled to a load and for generating an output current having a substantially constant ripple magnitude, and for adjusting the output current according to a sense signal indicative of the output current. In addition, the power system includes a filter element coupled in parallel with the load and for passing an AC (alternating-current) portion of the output current. Furthermore, the power system includes a current sensor coupled between ground and the parallel-coupled filtering element and load, and for providing the sense signal indicative of the output current. | 04-01-2010 |
20100079089 | LAMP SET - A lamp set includes a control device and a first lighting device. The control device includes an energy-generating unit for providing an energy distribution. The first lighting device includes a pre-processing unit, a first lighting element, and a controller. The controller is coupled to the pre-processing unit and the first lighting element. The pre-processing unit is used to sense the energy distribution or to receive information included in the energy distribution thus to allow the controller to control luminance of the first lighting element according to the energy distribution. | 04-01-2010 |
20100090617 | METHOD AND DEVICE FOR COMPOSING A LIGHTING ATMOSPHERE FROM AN ABSTRACT DESCRIPTION AND LIGHTING ATMOSPHERE COMPOSITION SYSTEM - The invention relates to composing a lighting atmosphere from an abstract description for example a lighting atmosphere specified in XML, wherein the lighting atmosphere is generated by several lighting devices, by automatically rendering the desired lighting atmosphere from the abstract description. The abstract description describes the type of light with certain lighting parameters desired at certain semantic locations at certain semantic times. This abstract atmosphere description is automatically transferred to a specific instance of a lighting system ( | 04-15-2010 |
20100097009 | SWITCHING CONVERTER FOR LIGHTING WITH LIGHT INTENSITY AS FEEDBACK AND LIGHT EMITTING APPARATUS USING THE SAME - A light emitting apparatus comprises a light emitting element and a switching converter comprising a conversion circuit for converting an operating electric signal to generate the driving electric signal, a feedback circuit having a light detecting element for detecting a luminous intensity of the light emitting element and generating a feedback signal, and a control circuit for receiving the feedback signal, comparing the received feedback signal with a reference electric signal, and controlling the conversion circuit based on comparison results to adjust the driving electric signal. Alternatively, the light detecting element detects ambient light and the control circuit controls the conversion circuit based on comparison results to stop or enable outputting of the driving electric signal. | 04-22-2010 |
20100097010 | PARALLEL TRANSFORMER WITH OUTPUT SIDE ELECTRICAL DECOUPLING - A higher power package is provided in a smaller package by providing at least first and second magnetics in parallel in first and second transformers. To limit degrading performance associated with circulating current between the two transformers, the transformers are electrically decoupled. In a preferred embodiment, the circuit includes parallel primary and secondary windings of the transformer that are decoupled electrically on an output side. Particularly, diodes are provided in a preheat portion of the circuit so that once the preheat phase is terminated, the diodes prevent current flow in one direction through the preheat portion of the circuit. | 04-22-2010 |
20100102754 | LED LAMP ASSEMBLY - An LED lamp assembly includes a lighting pole and an LED lamp mounted on the lighting pole. The lighting pole includes a holding cylinder, a plurality of light-guiding plates received in the holding cylinder and a light emitting member surrounded by the light-guiding plates. The holding cylinder defines a plurality of through holes in a circumference sidewall thereof. A sensor is connected to the LED lamp, whereby the LED lamp lightens only when an object moves approaching the LED lamp assembly. Each light-guiding plate is semitransparent. Light generated by the light emitting member partly transmits through a corresponding light-guiding plate and partly reflected thereby, whereby the lighting pole radiates an even light through the holes thereof. The lighting pole constantly radiates the even light during the operation of the LED lamp assembly. | 04-29-2010 |
20100102755 | Method for Controlling a Half-Bridge Circuit and Corresponding Half-Bridge Circuit - A circuit arrangement for operation of lamps, comprising a half-bridge arrangement which has an upper and a lower electronic switch (Q | 04-29-2010 |
20100102756 | APPARATUS FOR DRIVING LIGHT EMITTING DEVICE - An apparatus for driving a light emitting device according to an aspect of the invention may include: a DC/DC converter unit generating driving power on the basis of an input voltage and supplying the generated driving power to an anode of a light emitting unit including a plurality of light emitting devices; a current source controlling to keep current flowing through the light emitting unit constant; a feedback circuit unit detecting voltage at a cathode of the light emitting unit; and a feedback coupling circuit unit coupling the output of the feedback circuit unit and the input of the DC/DC converter unit to supply the input voltage of the DC/DC converter unit according to the voltage detected by the feedback circuit unit and an output voltage of the DC/DC converter unit. | 04-29-2010 |
20100123413 | METHODS AND SYSTEMS FOR CONTROLLING THE ACTIVATION OF AGRICULTURAL VEHICLE LIGHTING - An agricultural vehicle lighting system includes a plurality of HID lamps and a lighting controller. The HID lamps are configured to be mounted to the agricultural vehicle and powered by an existing electrical circuit of the agricultural vehicle. The lighting controller controls activation of the lamps and is configured to initially activate a first set of the lamps and to subsequently activate a second set of the lamps once it determines that the electrical circuit has the capacity to safely handle both the first and second sets of the lamps. The lighting controller may determine that the electrical circuit has sufficient capacity by determining when current drawn from the first set of the lamps drops below a threshold current level. Alternatively, the lighting controller may determine that the electrical circuit has sufficient capacity by delaying activation of the second set of the lamps for a time period corresponding to a current decay characteristic of the lamps. | 05-20-2010 |
20100123414 | Variable Lighting Zones - A zoned lighting space ( | 05-20-2010 |
20100123415 | Emulating light emission systems - The present invention is a fire fly emulation apparatus and method that functionally provides control of fire fly light emission emulation at each of the one or a plurality of light sources, in preferred embodiments LEDs. In some embodiments, the invention features integrated circuitry to each of the LEDs that affords accurate control of emulation of light emission of fire flies, or other light sources in some embodiments, such as timing, duration, delay, decay, ramping and fade emission control. In some preferred embodiments, the invention features transistors monolithically integrated with the LED. In still further embodiments control of current is provided to a plurality of LED light sources. The present invention affords preferable costs in manufacturing in a mechanically and electrically simple design embodied as fire fly emulation systems as both apparatus and method embodiments. The features of the present invention serve to provide embodiments that have applicability in decoration or other functional light display, generally, while providing preferred control that may not only emulate fire flies, but other light emissions. | 05-20-2010 |
20100127640 | BRIGHTNESS-ADJUSTABLE ILLUMINATION DRIVING SYSTEM - An illumination driving system includes a control unit and at least one base. The control unit includes a first converter and a brightness-adjustable circuit. An input AC voltage is converted into a regulated DC voltage by the first converter. The brightness-adjustable circuit is connected to the first converter. The base is separated from the control unit for supporting the at least one light-emitting device. The base includes a second converter. The second converter is connected with the first converter and the light-emitting device for converting the regulated DC voltage into an output voltage. The light-emitting device is driven to illuminate by the output voltage. The brightness-adjustable circuit generates a brightness adjusting signal to the first converter. The magnitude of the regulated DC voltage is adjusted according to the brightness adjusting signal, thereby adjusting the brightness value of at least one light-emitting device. | 05-27-2010 |
20100134045 | COLD CATHODE TUBE LIGHTING DEVICE - A cold cathode tube lighting device prevents emission-position-dependent unevenness from occurring in the brightness of light emitted from the cold cathode tube lighting device and includes a plurality of discharge tubes connected in parallel; ballast capacitors each integrally attached to a respective one the plurality of discharge tubes; power supplies arranged to that supply power to the plurality of discharge tubes; and a voltage detection unit connected to the plurality of discharge tubes to detect voltages between pairs of internal electrodes of the plurality of discharge tubes. The power supply to the plurality of discharge tubes is controlled according to the voltages detected by the voltage detection unit. | 06-03-2010 |
20100134046 | LED REPLACEMENT LAMP AND A METHOD OF REPLACING PREEXISTING LUMINAIRES WITH LED LIGHTING ASSEMBLIES - A lighting apparatus for retrofitting an existing luminaire includes a plurality of light emitting diodes (LED) of similar or differing wavelengths arranged and configured in at least one light bar array, a heat sink module thermally coupled to the at least one light bar array, an electronic power module electrically coupled to the at least one light bar array, and a plate coupled to the at least one light bar array, electronic power module and the heat sink module, the plate arranged and configured for coupling to the luminaire to provide quick and easy installation and replacement of the at least one light bar array, heat sink module and electronic power module into and from the luminaire. | 06-03-2010 |
20100141177 | DIMMER-CONTROLLED LEDS USING FLYBACK CONVERTER WITH HIGH POWER FACTOR - A flyback controller generates a switching signal for controlling delivery of current into a primary winding of a transformer in a flyback converter. The controller may include an output current monitoring circuit configured to generate a signal representative of an average output current in a secondary winding of the transformer based on a peak input current in the primary winding and a duty cycle of current in the secondary winding. The flyback controller may generate a switching signal that causes a chopped AC voltage from a dimmer control to be converted by the flyback converter into an average output current from a secondary winding of the transformer that is DC isolated from the chopped AC voltage and that varies as a function of the setting of the dimmer control. The flyback controller may not utilize a signal from an opto-isolator. | 06-10-2010 |
20100148698 | AUDIO CONTROLLED LED DECORATION LAMP STRING SYSTEM - The present invention is an audio controlled LED decoration lamp string system that mainly is to design a system with flashing function by inputting the audio source's frequency to directly control the LED decoration lamp string and create the variation of light and shade. The said system can be electrically-conducted in from a first sector capable of providing the AC (alternate current) or DC (direct current) power to a second sector's IC and electrically-conducted in a fifth sector's LED lamp string simultaneously. And, the second sector's IC is separately electrically-conducted with a third sector's MIC (audio source receiver) and a fourth sector's PWM (pulse width modulation). The fourth sector's PWM is then electrically conducted with a fifth sector's LED lamp string to form a complete system. | 06-17-2010 |
20100156319 | LED Lighting System with Accurate Current Control - A light emitting diode (LED) lighting system and method are disclosed. The LED lighting system and method include an LED controller to accurately control a current in an LED system. The LED controller includes components to calculate, based on the current and an active time period of an LED current time period, an actual charge amount delivered to the LED system wherein the LED current time period is duty cycle, modulated at a rate of greater than fifty (50) Hz and to utilize the actual charge amount to modify and provide a desired target charge amount to be delivered during a future active time period of the LED current time period. The LED system and method further involve components to compare the actual charge amount to a desired charge amount for the active time period and compensate for a difference between the actual charge amount and the desired charge amount during the future active time period. | 06-24-2010 |
20100156320 | LED CIRCUIT WITH HIGH DIMMING FREQUENCY - A LED circuit comprises: an inductor, a group of LEDs, a capacitor, a power MOS and a switching circuit. The inductor is connected to a voltage supply and a first node; the group of LEDs is connected to the first node and a ground potential; the capacitor is connected to the first node and a ground potential; the power MOS is connected to the first node and a ground potential, wherein the gate of the power MOS receives a switching signal such that the capacitor is charged when the power MOS is turn on to further turn on the LEDs and the capacitor is discharged when the power MOS is turn off to turn off the LEDs. The switching circuit is to generate the switching signal. | 06-24-2010 |
20100156321 | Lamp Driving Device - A lamp driving device includes a DC power supply, a square wave switch, a square wave controller, a plurality of lamps, a starting transformer, and a common transformer; a plurality of starting transformers and a plurality of common transformers are disposed at both sides of the plurality of lamps respectively, the plurality of starting transformers and the plurality of common transformers can have their primary sides or secondary sides cascaded and connected to the square wave switch; the present invention can effectively control the output power to the lamps, reduce the size and the temperature of the device, and improve the overall efficiency by connecting the primary sides or secondary sides in series. | 06-24-2010 |
20100164402 | SELECTIVE CONTROL OF LIGHTING DEVICES - In an arrangement of lighting devices ( | 07-01-2010 |
20100164403 | Circuits and methods for controlling LCD backlights - A circuit for controlling light sources comprises a converter, a feedback circuit and a current distribution controller. The converter is operable for converting an input voltage to an output current and for providing the output current to the light sources. The feedback circuit is coupled to the light sources for generating feedback signals indicative of currents flowing through the light sources respectively. The current distribution controller is coupled to the feedback circuit for generating control signals based on the feedback signals respectively so as to regulate the currents of the light sources respectively, and for controlling the converter to regulate the output current based on the feedback signals. | 07-01-2010 |
20100164404 | System and method for a constant current source LED driver - A system and method for providing a constant current source driver for a light emitting diode string. The converter includes a current sensor that derives feedback signal corresponding to a peak current through the light emitting diode string. The feedback signal is used by a controller to vary a duty cycle of the controller to regulate the average current. The controller is operable to regulate the average current as the number of light emitting diodes is increased and/or decreased. | 07-01-2010 |
20100164405 | ILLUMINATED OPTICAL APPARATUS - A device may include a magnifying lens having a focal length that defines a focal plane, a light source providing visible light directed toward the focal plane, and a controller. The controller may be programmed to receive a signal indicative of the distance from the device to an object, cause the light source to emit visible light at a first brightness if the distance is at least substantially equal to the focal length of the lens, and cause the light source to emit visible light at a second brightness, dimmer than the first brightness, if the distance is not at least substantially equal to the focal length of the lens. | 07-01-2010 |
20100171442 | Light Emitting Diode Based Lighting System With Time Division Ambient Light Feedback Response - A lighting system includes time division light output sensing and adjustment for ambient light. In at least one embodiment, time division light output sensing involves modulating power to a light emitting diode (LED) set, and the set of LEDs includes one or more LEDs. In at least one embodiment, each LED in the LED set is included in a single lamp, and, in at least one embodiment, the set of LEDs is contained in multiple lamps. In at least one embodiment, for each lamp, a controller modulates power to the LED set by selectively reducing power to the LED set using time division algorithm to allow a light sensor to sense the brightness of ambient light with a reduced contribution from the LED set. In at least one embodiment, a lighting system also includes time division light output sensing and adjustment for different spectra LEDs. | 07-08-2010 |
20100176746 | Method and Device for Remote Sensing and Control of LED Lights - A control system is disclosed for determining an actual temperature of a light emitting diode. The control system uses conductor that supply power to the light emitting diode to supply a pulse to the light emitting diode. The pulse is determined along with a reaction caused by the pulse and the information gained is used in determination of the light emitting diode die temperature which can then be used in controlling current to the light emitting diode to control the temperature of the light emitting diode. | 07-15-2010 |
20100181929 | SERIAL TYPED IC'S TRANSMISSION METHOD OF CODING SEQUENCE - The present invention is to provide a coding sequence's transmission method for the serial typed IC used in a decoration lamp, which mainly applies a dynamic coding technology to a design requiring to initially setup the coding sequence in each time such that each IC adopts the serial typed sequencing transmission and becomes a form with an effect of varying IC address dynamically. While one of the ICs is damaged, it only needs to take a new IC then exchange it directly, and that is all. It can solve the problems of inconvenience in the past that the serial transmission ICs need to burn in the sequence numbers and positioning every IC's addresses, and it needs to get an IC with the same sequence number for exchanging while one of the ICs is damaged. | 07-22-2010 |
20100181930 | REGULATED POWER SUPPLY - A circuit for producing a regulated output voltage and/or current includes a rectifier to rectify an alternating current (AC) input voltage and current to produce a rectified voltage and current having a frequency. A regulator is coupled to the rectifier to produce a regulated output based on the rectified voltage and/or current. A pair of output terminals supply the regulated output to a load The circuit does not include any capacitors that substantially filter the frequency of the rectified voltage and current. | 07-22-2010 |
20100181931 | MULTI-LAMP DRIVING CIRCUIT - A multi-lamp driving circuit for driving a plurality of lamps includes at least one power stage circuit, at least one transformer circuit, a balancing circuit, and a control circuit. The power stage circuit converts external electrical signals to alternating current (AC) signals. The transformer circuit is connected to the power stage circuit, to convert the AC signals to high voltage electrical signals capable of driving the lamps. The balancing circuit balances current flowing through the lamps, and includes a capacitor balancing circuit and a transformer balancing circuit. The control circuit is connected between the balancing circuit and the power stage circuit, to control output of the power stage circuit according to variation of the current flowing through the lamps. | 07-22-2010 |
20100181932 | LAMP-SET STRUCTURE - The present invention includes a lamp cap and a lamp body. An interior of the lamp cap is provided with an illuminating element which is electrically connected with a circuit board. The circuit board is provided with electric contacts which are exposed at a bottom of the lamp cap and peripheries of the lamp cap are provided with latching parts. The lamp body includes a handheld part and a lamp holder. An interior of the lamp holder is provided with fastening parts which correspond with the latching parts of the lamp cap, allowing the lamp cap to be engaged on and electrically connected with the lamp holder. In addition, the handheld part is provided with a control switch. | 07-22-2010 |
20100181933 | DIRECT AC-TO-DC CONVERTER FOR PASSIVE COMPONENT MINIMIZATION AND UNIVERSAL OPERATION OF LED ARRAYS - Disclosed herein is a power converter circuit for a LED lighting device. The power converter includes a pair of input terminals adapted to be connected to a signal source, at least one LED, a first circuit adapted to supply current to the at least one LED and including: a first bi-directional switch connected between one input terminal and one side of the at least one LED, and a second bi-directional switch connected between the other side of the at least one LED and the other input terminal, and a second circuit adapted to supply current to the at least one LED and including: a third bi-directional switch connected between the other input terminal and the one side of the at least one LED, and a fourth bi-directional switch connected between the one input terminal and the other side of the at least one LED. | 07-22-2010 |
20100194308 | LED DRIVER WITH DYNAMIC HEADROOM CONTROL - A voltage source provides an output voltage to drive a plurality of light emitting diode (LED) strings. A LED driver adjusts the level of the output voltage so as to maintain the lowest tail voltage of the LED strings at or near a predetermined threshold voltage so as provide sufficient headroom voltages for current regulators for the LED strings. The LED driver operates in an operational mode and a calibration mode, which can be implemented in parallel with, or part of, the operational mode. During the calibration mode, the LED driver determines, for each LED string, a code value representative of the level of the output voltage necessary to maintain the tail voltage of the corresponding LED string at or near the predetermined threshold voltage. In the operational mode, the code values from the calibration mode are used to control the voltage source to provide an appropriate level for the output voltage. | 08-05-2010 |
20100207545 | ELECTRONIC DIMMER CIRCUIT - An electrical dimmer circuit comprising the electrical dimmer circuit for dimming the electrical power of a plurality of lighting means having at least one digital input channel, at which digital low-voltage input signals for specifying the light power of the various lighting means can be received, and having at least two output channels, on which output signals for dimming the electrical power of the respectively assigned lighting means can be output by pulse width modulation of a high alternating voltage. | 08-19-2010 |
20100207546 | METHOD FOR DRIVING COLOR LAMP AND APPARATUS THEREFOR - Disclosed is a color lamp driving apparatus for generating illumination light of various colors by using a plurality of Red (R), Green (R), and Blue (B) lamps together with each other, having a color controller for generating a color control signal, which indicates driving time rates of R, G, and B lamp arrays, according to color information of required illumination light, and a lamp driving module for outputting a driving signal for driving each of R, G, and B lamp arrays according to the color control signal output from the color controller. The driving signal is set to apply driving times for the R, G, and B lamp arrays based on one among a start time point, a middle time point, and an end time point of each corresponding period ΔT within one light-emitting period T. | 08-19-2010 |
20100213872 | SYSTEM AND METHOD FOR ELECTRONIC ADAPTIVE FRONT-LIGHTING - A system and method relates to electronic adaptive front-lighting of a vehicle, including at least one fixed solid state light source. The fixed solid state light source is configured to illuminate a front peripheral region of a vehicle. In addition, the fixed solid state light source is integrated with a daytime running light module of the vehicle. | 08-26-2010 |
20100213873 | SYSTEM AND METHOD FOR LIGHT AND COLOR SURROUND - The present disclosure is directed towards a multimedia system comprising a multimedia reader. The multimedia reader may be configured to read multimedia content and to extract light surround content. The light surround content may represent a light surround control signal. The light surround content may be extracted from the multimedia content. The multimedia reader may also be configured to output the light surround control signal. Further, the multimedia system may also include one or more light emitting devices. Each light emitting device may be in communication with the multimedia reader. Each light emitting device may be configured to receive the light surround control signal and to control a light characteristic based upon, at least in part the light surround control signal. Numerous other embodiments are also within the scope of the present disclosure. | 08-26-2010 |
20100219772 | PORTABLE ELECTRONIC DEVICE - A portable electronic device includes a housing, at least one thermoscope unit mounted on the housing, a processor unit connected to the thermscope unit, and at least one light emitting unit connected to the processor unit. The processor unit stores data of predetermined different light colors corresponding to different ambient temperature ranges. The thermoscope unit detects ambient temperature, the processor unit obtains the ambient temperature from the thermoscope unit and controls the light emitting unit to emit light in predetermined colors corresponding to the ambient temperature range according to the stored data. | 09-02-2010 |
20100225247 | LED Circuit - A LED circuit is provided. The LED circuit comprises: an inductor, a group of LEDs, a power MOS and a switching circuit. The switching circuit comprises: an error amplifier generating an error output, a PWM, a RC circuit and a control means. The PWM generates a switching signal according to the error output to control the power MOS to charge or discharge the group of LEDs; the RC circuit comprises at least one first capacitor each comprising a switch, at least one second capacitors; and a resistive means connected in series between the first and the second capacitors and the error output. The control means generates a control signal according to the dimming signal to turn on the switches to activate the first capacitors during the active period of the dimming signal and turn off the switches to deactivate the first capacitors during the inactive period of the dimming signal. | 09-09-2010 |
20100225248 | ILLUMINATED VISOR VANITY - A visor vanity including a visor body for a vehicle having an electrical system is provided. The visor body includes a visor mirror, at least one light source, a switch, a regulator circuit and a timer. The switch causes at least one energy source that is independent of the electrical system of the vehicle to generate a first voltage signal. The regulator circuit is operably coupled to the switch and to the energy source for transmitting a second voltage signal in response to the first voltage signal so that the light source receives the second voltage signal. The timer is powered by the energy source for causing the regulator circuit to disable the operation of transmitting the second voltage signal in response to the timer achieving a predetermined count value. | 09-09-2010 |
20100225249 | LED Driver with Direct AC-DC Conversion and Control, and Method and Integrated Circuit Therefor - The present invention discloses an LED driver with direct AC-DC conversion and control function, and a method and integrated circuit therefor. The LED driver comprises: a primary side circuit receiving rectified AC power, the primary side circuit including at least one power switch; a transformer coupled to the primary side circuit and controlled by the at least one power switch to convert a primary voltage to a secondary voltage which is supplied to an LED circuit; and a secondary side circuit coupled to the transformer, the secondary side circuit directly controlling current flowing through the LED circuit and sending a feedback signal to the primary side circuit to control the at least one power switch thereby. | 09-09-2010 |
20100237803 | Dimmable color selectable light emitting diodes - A dimmable color selectable light emitting diode (LED) lighting system, comprising: a plurality of light sources including at least one LED and being configured to communicate with one another over a network including at least one power line; and a controller configured to communicate with the plurality of light sources over the network to control the intensity and color of light displayed by each of the plurality of light sources. | 09-23-2010 |
20100244737 | Dual Voltage and Current Control Feedback Loop For an Optical Sensor System - A dual voltage and current control feedback control loop for an optical sensor system. A power supply provides a regulated DC voltage. A current source receives the regulated DC voltage and provides switched current to a light source. A current feedback representative of the current to the light source is provided to the power supply on a feedback path when the current source is driving the light source. A voltage feedback representative of the DC voltage is provided to the power supply on the feedback path when the current source is not driving the light source. | 09-30-2010 |
20100244738 | AUDIO MIXING CONSOLE CAPABLE OF ADJUSTING BRIGHTNESS OF LED OPERATOR, AND METHOD OF OPERATING THE SAME - An audio mixing console includes a brightness adjusting mode selection button and an adjustment subject specification button. A user operates the brightness adjusting mode selection button to set up a brightness adjusting mode, and operates the adjustment subject specification button to specify any color LED of RGB or all colors as an adjustment subject. When an LED button is operated, brightness of an LED of a color of an adjustment subject in a multicolor LED unit incorporated in the LED button is increased one step by one step. In another example, in response to an operation of a button, brightness of an LED of a color of the adjustment subject in the multicolor LED unit incorporated in a plurality of LED buttons other than this button is increased one step by one step. This work is carried out for every LED and LED button. | 09-30-2010 |
20100244739 | DRIVING DEVICE, BACKLIGHT WITH THE DRIVING DEVICE AND DRIVING METHOD OF BACKLIGHT - The present disclosure relates to a driving device for a backlight with a plurality of LED units. The driving device can comprise a control module for controlling output voltage of the driving device; a light modulation module for adjusting overall current of the backlight; and a current regulating module for obtaining signals for adjusting individual current of each LED unit and adjusting the individual current of each LED unit according to the signals. | 09-30-2010 |
20100244740 | MULTI-CHIP LIGHT EMITTING DIODE LIGHT DEVICE - An electric lamp includes a first light source and a second light source and power circuitry configured to selectively energize the first light source and the second light source. The first light source is configured to produce light that is substantially free of wavelengths below about 530 nanometers, and the second light source is configured to product light having wavelengths of less than about 530 nanometers. The electric lamp is configured to produce white or near-white light in a variety of color temperatures, while retaining good color rendering index. | 09-30-2010 |
20100259191 | POWER CONTROL CIRCUIT AND METHOD - A light source with substantially constant intensity and power consumption is provided. The light source includes a controllable dc voltage and current source; a non-linear light-emitting load supplied with dc voltage and current from the controllable dc voltage and current source; a current sense circuit connected in series with the non-linear light-emitting load; a variable LED forward voltage (varying with temperature, binning batch, aging) sensor circuit; a multiplier operative to measure a power-representative signal; and a power consumption control feedback circuit through which the dc voltage and current source is controlled in relation to the variable forward voltage representative signal to adjust the dc voltage and then a current to amplitudes that keep the light intensity and power consumption produced by the light source substantially constant. | 10-14-2010 |
20100259192 | BUCK-MODE BOOST CONVERTER WITH REGULATED OUTPUT CURRENT - An LED driver circuit that includes a buck-mode boost converter that provides a regulated output current and that requires only a single connection to each channel of LEDs. The buck-mode boost controller may include a current regulator that includes an integrator. The current regulator may be configured to integrate a difference between a reference signal that is representative of the desired level of the average current through the electronic power switch and a detected signal that is representative of the actual current that is being delivered to the buck-mode boost circuit through the electronic power switch. The reference signal to the integrator may not change during operation of the buck-mode converter. The current regulator may be configured to deactivate the integrator and/or to disconnect the detected signal from the integrator while the electronic power switch is off. | 10-14-2010 |
20100259193 | Remote Lighting Control System - A remote lighting control system is for remote lighting control of a plurality of discharge lamps. This system has the installed electronic ballasts of each discharge lamp. Each electronic ballast has a transceiver and a controller, the transceiver exchanges control information with the controller. The control command contains the identifiable information to specify one of a plurality of electronic ballasts. When the transmitter is received the control command, the transceiver transfers the received control command to other electronic ballasts further. Moreover, if the control command is the one that the identifiable information specifies own ballasts, the control information based on the received control command is send to own controller, and the controller control the discharge lamp. According to this system, when a lot of lamps was arranged the factory etc. comparatively widely, the user's remote control is not limited to the narrow scope. | 10-14-2010 |
20100277099 | METHOD OF DRIVING A LIGHT SOURCE, LIGHT SOURCE DRIVING APPARATUS FOR PERFORMING THE METHOD AND DISPLAY APPARATUS HAVING THE LIGHT SOURCE DRIVING APPARATUS - A light source power supply part generates a first output voltage close to a light source input voltage or a second output voltage close to a reference voltage by comparing the reference voltage and the light source input voltage in accordance with an embodiment of the present invention. A light source driving part may drive a light source based on the first output voltage or the second output voltage. Therefore, the light source may be driven with a stable voltage regardless of the level of the light source input voltage. | 11-04-2010 |
20100283409 | LED Driver and Start-Up Feedback Circuit Therein - An LED driver includes a start-up feedback circuit, an operating feedback circuit and a multiplexer. The start-up feedback circuit has first terminals for receiving LED feedback voltages each delivered from at least one LED coupled to an output terminal for outputting an output voltage, of the LED driver, and generates a start-up feedback voltage accordingly. The operating feedback circuit has second terminals for receiving the LED feedback voltages, and generates an operating feedback voltage accordingly. The multiplexer selects the start-up feedback voltage for initial boost of the output voltage when the LED driver is initially activated, and selects the operating feedback voltage for following boost of the output voltage when the output voltage increases to a certain value. | 11-11-2010 |
20100283410 | DRIVE CIRCUITS FOR ELECTRO-LUMINESCENT LAMPS - A drive circuit for delivering an AC voltage to an array of electro-luminescent lamps ( | 11-11-2010 |
20100295476 | FAST SWITCHING, OVERSHOOT-FREE, CURRENT SOURCE AND METHOD - A method and a circuit may have an ability to provide constant currents of a certain set value, the rising and falling edges of which may be shorter than the design minimum on-phase. Essentially, these results may be obtained by keeping an operational amplifier that controls the output power switch in an active state during off-phases of an impulsive drive signal received by the current source circuit in order to maintain the output voltage of the operational amplifier at or just below the voltage to be applied to the control terminal of the output power switch during a successive on-phase of a received drive pulse signal. | 11-25-2010 |
20100301772 | Simplfied lighting control system - The invention offers an improvement in lighting control systems by providing a simplified power switching control system (i.e., using direct AC line voltage or DC current power switches instead of low voltage switches that control higher-current-capable relays) that controls the power to the power supplies that drive the light producing devices in a plurality of luminaires or lighting fixtures in a given installation. The lighting control system facilitates multiple modes of lighting configurations while requiring fewer switches that the prior art and also being easier to operate. The system supports the simultaneous use of multiple lighting technologies. Other embodiments showing extensions to the invention are also disclosed. | 12-02-2010 |
20100301773 | Fixture with Individual Light Module Dimming - 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. | 12-02-2010 |
20100301774 | Power Management Unit with Automatic Output Configuration - 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. | 12-02-2010 |
20100308746 | ELECTRONIC OPERATING DEVICE FOR OPERATING AT LEAST ONE DISCHARGE LAMP - An electronic operating device for operating at least one discharge lamp may include an output network having at least one input connection and at least one output connection, wherein the at least one input connection of the output network is coupled to one of a plurality of voltage rails, and wherein the at least one output connection of the output network is coupled to one of a plurality of poles of a supply voltage. | 12-09-2010 |
20100320936 | HIGH-VOLTAGE LED DRIVE SCHEME WITH PARTIAL POWER REGULATION - A high-voltage LED drive scheme with multi-stage power regulation. The multi-stage power regulation applies two components of voltage to drive the LED strings. This scheme achieves high efficiency, small size and low cost. | 12-23-2010 |
20100320937 | POWER SUPPLY CIRCUIT FOR POWERING LIGHT EMITTING DIODE - A power supply circuit for receiving an input voltage and outputting a driving voltage to at least one LED string. The power supply circuit includes a rear-stage converting circuit and a control circuit. The rear-stage converting circuit is used for receiving the input voltage and converting the input voltage into a compensating voltage. The control circuit is connected to the rear-stage converting circuit and the LED string for detecting the magnitude of a current passing through the LED string, thereby controlling the current passing through the LED string to be identical. The driving voltage is outputted from the power supply circuit. The driving voltage is a summation of the input voltage and the compensating voltage. | 12-23-2010 |
20100327772 | REFERENCE VOLTAGE GENERATING DEVICE, CONTROL DEVICE INCLUDING THE REFERENCE VOLTAGE GENERATING DEVICE, AND LED LIGHT EMITTING DEVICE USING THE CONTROL DEVICE - A control device and an LED light emitting device using the same are provided and technology of providing a high contrast ratio to the LED light emitting device and allowing the LED light emitting device to perform a stable operation is disclosed. The LED light emitting device includes a DC/DC converter reference voltage generator that generates a DC/DC converter reference voltage so that a minimum level of a channel voltage having a largest LED voltage drop agrees with a predetermined minimum reference voltage by detecting a plurality of channel voltages corresponding to LED voltage drops of each of a plurality of LED channels LED and an output voltage controller that controls an output voltage of the DC/DC converter using a distribution voltage corresponding to an output voltage and the DC/DC converter reference voltage. | 12-30-2010 |
20110001438 | Power Management Unit with Temperature Protection - 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 |
20110012533 | COLOR LED DRIVER - Disclosed herein is a color LED driver, which is capable of being implemented by a compact structure without a feedback structure and accompanying a small size and low cost, by directly connecting a negative temperature coefficient (NTC) thermistor to a driving current path of a color LED applied to an LCD backlight to compensate a characteristic variation of the LED due to a variation in a temperature. The color LED driver includes a driving constant voltage source | 01-20-2011 |
20110025232 | SEAMLESS FOLDABLE DISPLAY DEVICE - A foldable display device is designed so that a junction between at least two display panels connected to each other is not visibly seen. The display device displays an image on a plurality of display panels that are connected together. Pixels near the junction between every two adjacent display panels of the at least two display panels are smaller and have a higher brightness than the other pixels. | 02-03-2011 |
20110031897 | LIGHTING SYSTEMS AND METHODS OF AUTO-COMMISSIONING - A lighting system for areal illumination is disclosed which includes a remote driver and a plurality of fixtures including luminaires, control devices, and/or standalone sensors. The luminaires include a light source whose output light level can be adjusted, a light sensor co-located therewith adapted to measure light received from adjacent fixtures, and a microcontroller capable of transmitting the output of the light sensor over wires to the remote driver. The remote driver is capable of bidirectional communication with the luminaires and provides independently controllable power for the light sources of the luminaires. A method of commissioning a lighting system is also disclosed which includes installing a plurality of luminaires above the area to be illuminated, causing a light source co-located with each luminaire to emit a signal, detecting the signal at light sensors co-located with each luminaire, converting the signals obtained by the light sensors into distance measurements between luminaires, creating a map recording the relative location of luminaires, and assigning luminaires to groups based on their relative locations in the map. A movable orb region large enough to containing a plurality of luminaires can also be defined and the light levels of individual luminaires can be set according to a defined mathematical function of their location within the orb region, where the defined mathematical function sets light levels which vary from the center to the periphery of said orb region. | 02-10-2011 |
20110031898 | DRIVING APPARATUS AND METHOD FOR ADJUSTING DRIVE VOLTAGE - A driving apparatus includes a voltage transforming unit and a detector. The driving apparatus is used for supplying a drive voltage to a load. The voltage transforming unit is used for transforming a direct current (DC) voltage to the drive voltage. The detector is connected to the load for detecting a forward voltage across the load to generate a detecting voltage; wherein the detector compares the detecting voltage with a first reference voltage. If the detecting voltage is smaller than the first reference voltage, the detector generates a first feedback signal; the voltage transforming unit increases the drive voltage according to the first feedback signal, the detecting voltage is defined by subtraction of the forward voltage from the drive voltage. | 02-10-2011 |
20110037414 | DRIVING APPARATUS FOR LIGHT EMITTING DIODES - A driving apparatus is provided and configured to suit driving at least a string of light emitting diodes (LEDs). The driving apparatus includes a flyback power factor correction (PFC) converter, a harmonics-filtering unit and a control unit. The flyback PFC converter works in an operation mode according to a pulse-width modulation (PWM) signal and receives an AC power so as to convert the AC power into a pulsating current. The harmonics-filtering unit is coupled to the flyback PFC converter and the string of LEDs, for receiving the pulsating current and filtering out the high-frequency harmonic components in the pulsating current so as to drive the string of LEDs. The control unit is coupled to the flyback PFC converter and the harmonics-filtering unit, for producing the PWM signal according to the AC power and the pulsating current, and reducing the peak-to-average ratio (PAR) of the pulsating current. | 02-17-2011 |
20110037415 | Gls-Alike Led Light Source - The invention relates to GLS-look-alike LED light source ( | 02-17-2011 |
20110043137 | WHITE LIGHT COLOR CHANGING SOLID STATE LIGHTING AND METHODS - Solid state lighting (SSL) luminaries are disclosed wherein the emission intensity of discrete light sources within the SSL luminaire can be varied to produce luminaire light having different characteristics. The present invention can utilize the unique circuit topology of SSL luminaires to vary the emission intensity of different types of LEDs in the luminaire. In some embodiments, the different types of LEDs are connected in respective serial strings, and the intensity of emission of the LEDs in each of the strings can be varied by changing the electrical signal driving the strings. In some of these embodiments, white light is emitted from the SSL luminaire by combining emission from BSY and red LEDs. For these embodiments the color changing solutions according to the present invention can include, as an example, changing color while dimming the luminaire, changing color between daytime and nighttime modes, and changing between most efficient and points in between. | 02-24-2011 |
20110043138 | Light Emitting Device Capable of Dynamically Regulating Output Voltage and Related Control Method - A light-emitting diode (LED) device capable of dynamically regulating output voltage is disclosed. The LED device includes a plurality of LED chains, a voltage converter, a current driving unit, a loop control unit. The loop control unit is coupled to the LED chains and the voltage converter, and includes a voltage selection unit, an error amplifier, and a conversion controller. The voltage selection unit is utilized for generating a plurality of candidate voltages according to a threshold voltage and a plurality of headroom voltage voltages corresponding to the LED chains and the current driving unit, and selecting a feedback voltage from the candidate voltages. The error amplifier generates an error voltage signal according to a reference voltage and the feedback voltage. The conversion controller generates a voltage control signal according to the error voltage signal to control the voltage conversion of the voltage converter. | 02-24-2011 |
20110050129 | BUCK CONVERTER FOR MAKING POWER AVAILABLE TO AT LEAST ONE LED - A buck converter for providing a current for an LED includes an input for connection of a DC voltage source; an output for connection of the LED; and a Buck diode, a Buck inductor and a Buck main switch which has a control electrode, a working electrode and a reference electrode. The diode and the main switch are coupled in series, wherein the connecting point between the diode and the main switch is coupled to the second output connection. The converter includes: an auxiliary winding which is coupled to the inductor and has a connection which is coupled to the second input connection and a connection which is coupled to the control electrode of the switch, wherein the auxiliary winding is coupled to the inductor such that, when current is flowing through the switch, a current is provided through the auxiliary winding to the control electrode of the switch. | 03-03-2011 |
20110050130 | BUCK CONVERTER AND METHOD FOR PROVIDING A CURRENT FOR AT LEAST ONE LED - A Buck converter may include an input for connecting a DC voltage source; an output for connecting an LED; and a diode, an inductor and a main switch; wherein the diode and the main switch are coupled in series, wherein the inductor is coupled between the connecting point for the diode and the main switch, and a first output connection, wherein the converter further includes: a first auxiliary switch supplied with a first voltage; and a second auxiliary switch supplied with a second voltage, wherein the first auxiliary switch and the second auxiliary switch are coupled to the main switch such that the first voltage stipulates the switch-off time for the main switch and the second voltage stipulates the switch-on time for the main switch. | 03-03-2011 |
20110050131 | LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A backlight driving circuit for a liquid crystal display device including a light emitting diode controlling portion for outputting a brightness control signal, a light emitting diode driving portion that amplifies an input voltage to produce the first driving voltage and that uses the brightness control signal to adjust a second driving voltage, a backlight unit including a plurality of channels, each of the plurality of channels including a light emitting diode array supplied in common with the first and second driving voltages from the light emitting diode driving portion, a feedback voltage terminal on each of the plurality of channels that outputs a feedback voltage to the light emitting diode controlling portion, a detecting element on each of the plurality of channels that detects the feedback voltage, and a current set resistor disposed between the plurality of channels and a ground terminal of the light emitting diode driving portion. | 03-03-2011 |
20110050132 | AREA BASED LIGHTING CONTROL SYSTEM INCLUDING LOCAL LUMINAIRE CONTROL - The invention relates to local luminaire control in an area based lighting control system. A basic idea of this invention is to use a soft switch assigned to one or more luminaries of an area based lighting control system to locally control the luminaire/ies, wherein the soft switch is adapted for generating an appropriate signal for the area based lighting control system, that puts the luminaire/ies in the desired state. An embodiment of the invention provides an area based lighting control system ( | 03-03-2011 |
20110080116 | Solid State Lighting Devices Including Thermal Management and Related Methods - Provided is a solid state lighting apparatus that includes multiple light emitting diodes (LEDs) including at least a first LED and a second LED. The apparatus includes a thermal sensor that is configured to provide a temperature signal corresponding to an operating condition of the solid state lighting apparatus and a control circuit that is configured to receive the temperature signal and to selectively interrupt electrical current to a portion of the plurality of light emitting diodes responsive to the temperature signal including a value that exceeds a high temperature limit. | 04-07-2011 |
20110080117 | DISTRIBUTED ARCHITECTURE VOLTAGE CONTROLLED BACKLIGHT DRIVER - A backlight system for light emitting diodes (LEDs), the backlight system constituted of: a controllable power source; a plurality of LED based luminaires arranged to receive power in parallel from the controllable power source; a plurality of driving circuitries, each of the plurality of driving circuitries arranged to control the light output of at least two of the plurality of LED based luminaires and further arranged to output information regarding the voltage drop of at least one of the at least two LED based luminaires controlled thereby, wherein the controllable power source is arranged to output a voltage whose value is responsive to the output information. | 04-07-2011 |
20110080118 | DC-DC CONVERTER - A DC-DC converter for driving one or more LED ( | 04-07-2011 |
20110084627 | Shelf Lighting Device And Method - The present invention provides various embodiments for apparatuses, systems, and methods for lighting devices used in shelving, displays, and the like. Some embodiments provide lighting device comprising elongated extrusions with a first surface and a second surface proximate the first surface. The second surface may be reflective. One or more light emitting devices may be mounted at the first surface of the extrusion. The first surface is angled with respect to the second surface such that at least a portion of the light emitted from the light emitting devices reaches the second surface. If the second surface is reflective, at least a portion of the emitted light will be reflected from the second surface. A protective and possibly light diffusive lens may be provided between the first and second surfaces. In other embodiments, lighting systems may be provided with a plurality of lighting devices as described above. One or more power transfer devices may be provided to connect the lighting devices in vertical and/or horizontal arrangements, and at least one power supply may be provided to power the power transfer devices and lighting devices. Additionally, dimmer devices with integrated sensors may be included to dim the lighting devices when reduced illumination is desired. | 04-14-2011 |
20110089865 | LOAD DRIVING CIRCUIT AND MULTI-LOAD FEEDBACK CIRCUIT - A load driving circuit and a multi-load feedback circuit is disclosed. The load driving circuit and the multi-load feedback circuit are adapted to drive a LED module that has a current balancing circuit for balancing the currents flowing through LEDs. The load driving circuit and the multi-load feedback circuit modules the electric power transmitted by the LED driving apparatus to a LED module according to voltage level(s) of current balancing terminals having insufficient voltage in the current balancing circuit, and so the voltage levels of the current balancing terminals are higher than or equal to a preset voltage level, further increasing the efficiency thereof. | 04-21-2011 |
20110089866 | LED Lighting System - The LED light fixture includes white LEDs having multiple, different color temperatures. Preferably, white LEDs having color temperatures of about 3500 and about 5000 degrees Kelvin (K) are selected. The intensity of each LED may be varied and the light radiated from the LEDs is mixed together. The resulting light emitted from the housing is a white light having a variable color temperature ranging from about 3500 to about 5000 K. The housing is preferably extruded aluminum. A portion of the housing is configured to mix the light together and to focus the light such that the output light is about thirty degrees off center. Electrical loading is off set to minimize load on power supplies. | 04-21-2011 |
20110109248 | DC/DC CONVERTER WITH MULTIPLE OUTPUTS - Embodiments of the invention provided a DC/DC converter. The DC/DC converter includes a transformer, a first controller and a first switch. The transformer has a primary winding coupled to a power source, a first secondary winding for providing a first output voltage and a second secondary winding for providing a second output voltage. The first controller is coupled to the primary winding for controlling input power to the primary winding to regulate the first output voltage. The switch is coupled to the second secondary winding and for regulating the second output voltage. The first switch is controlled by a pulse modulation signal. A current flows through the second secondary winding if the pulse modulation signal is in the first state, and the current flowing through the second secondary winding remains cut-off if the pulse modulation signal is in the second state. | 05-12-2011 |
20110115409 | LED EMITTER FOR OPTICAL TRAFFIC CONTROL SYSTEMS - A light emitter for a traffic control preemption system. The emitter includes a plurality of groups of infrared (IR) LEDs and a power source coupled to the groups of LEDs. A plurality of controlled current sources is coupled to the plurality of groups of LEDs, respectively. A controller is configured to trigger an IR light pulse pattern from the groups of LEDs and maintain a first level of IR radiant power from the groups of LEDs using individual control of respective current levels to the groups of LEDs in response to current sense levels from the groups of LEDs. The pulse pattern and first level of IR radiant power activate preemption in the traffic control preemption system. | 05-19-2011 |
20110115410 | LED LAMP FOR STREET LIGHTING UTILIZING MULTIPLE DRIVERS - Disclosed is a light emitting diode lamp including a plurality of LED modules having a plurality of LEDs, the plurality of LEDs being arranged in a plurality of zones, a plurality of drive modules each respectively providing pulsed direct current power to one of the plurality of zones, and LED lamp controller electrically connected to the plurality of drive modules. | 05-19-2011 |
20110127928 | Automatic Calibration of an Automated Dimmer - The present specification discloses a method and device for automatically calibrating a reference light level for an automated dimmer for electric lights, such as fluorescent lamps. An automatic dimmer, including an automatic calibration device, can be installed in series between an instant-start electronic ballast and a fluorescent lamp. An exemplary method for calibrating a lamp includes blocking or removing all ambient light, turning on the electric light, measuring the light output, and turning off the electric light. | 06-02-2011 |
20110140634 | CIRCUIT ARRANGEMENT AND METHOD FOR THE OPERATION OF AT LEAST ONE DISCHARGE LAMP - A circuit arrangement for the operation of at least one discharge lamp is provided. The circuit arrangement may include an input for connecting an AC supply voltage; a rectifier, which is coupled to the input and has a first output terminal and a second output terminal for providing a DC supply voltage; an inverter, which includes at least a first switch and a second switch, which are coupled in series between the first output terminal and the second output terminal of the rectifier; a control circuit which is at least designed to drive the first switch and the second switch, with a first input for receiving a control signal, and a second input for feeding a voltage for supplying the control circuit, the second input being connected to an operational supply apparatus, which is designed to couple an operational supply voltage to the second input of the control circuit during operation of the inverter; a control line, which is coupled firstly to the input for connecting an AC supply voltage and secondly to the first input for receiving a control signal, a third switch being arranged in the control line; wherein it furthermore includes a startup supply apparatus with an input and an output, its input being coupled to the first input of the control circuit, and its output being coupled to the second input of the control circuit, the startup supply apparatus being designed to provide a startup supply voltage at the output of the startup supply apparatus in the event of an on signal at the input of the startup supply apparatus when the control circuit has no supply and therefore is switched off. | 06-16-2011 |
20110140635 | LIGHTING APPARATUS - Disclosed herein is a lighting apparatus which varies a light emission pattern of a light emitting unit based on external stimuli, such as sounds, and is aesthetically pleasing to a user through variation in light emission pattern. | 06-16-2011 |
20110148324 | METHODS AND SYSTEMS FOR LED DRIVER HAVING CONSTANT OUTPUT CURRENT - A control circuit for a switched mode power supply includes a transconductance amplifier circuit for receiving a voltage signal related to a current from an input of the power supply and producing a first signal, an analog signal processor coupled to the amplifier circuit for receiving the first signal and a second signal from the input of the power supply and a third signal from an output of the power supply. The analog signal processor is configured to produce a fourth signal as a function of the first, the second, and the third signals. An adder circuit is coupled to the fourth signal and a dimmer control signal, and the adder circuit is configured to output a fifth signal. A comparator circuit is coupled to the adder circuit for providing a control signal to a power transistor that controls current flow in the power supply based on comparison of the fifth signal and a reference signal. | 06-23-2011 |
20110156615 | BACKLIGHT DRIVING CIRCUIT FOR USE IN LCD PANEL - A backlight driving circuit includes a voltage-regulating circuit, a self-excited oscillation circuit, a transformer, a rectifying circuit and a filtering circuit. The voltage-regulating circuit is used for receiving an input voltage and adjusting the input voltage into a DC voltage. The self-excited oscillation circuit generates an oscillation voltage according to the DC voltage. The transformer includes a first primary winding assembly and a secondary winding assembly. The first primary winding assembly is connected with the self-excited oscillation circuit for receiving the oscillation voltage, so that the secondary winding assembly is induced to generate an AC output voltage. The rectifying circuit is used for rectifying the AC output voltage into a DC driving voltage. The filtering circuit is connected to the rectifying circuit and plural LED strings for filtering the DC driving voltage, so that the plural LED strings are driven by the filtered DC driving voltage. | 06-30-2011 |
20110163691 | System and Method for Managing Backlight Luminance Variations - An LED assembly containing separately-controllable regions of LEDs with temperature sensing devices placed to measure the temperature within each region of LEDs. When the temperature difference between two regions becomes higher than an acceptable maximum, the system may adjust the power to one or more LED regions to maintain luminance uniformity. The regions can be arranged vertically or horizontally or both. A software processor may be used to interpret the data from the temperature sensing devices and control the power sent to the various LED regions. Embodiments can be used at least in LED backlights for LCD displays or for LED displays. | 07-07-2011 |
20110163692 | Circuit Arrangement and Method for Operating a Light Source - A method for operating at least one light source, in which an input voltage (U | 07-07-2011 |
20110163693 | CIRCUIT ARRANGEMENT AND METHOD FOR OPERATING AT LEAST ONE LED - A circuit arrangement for operating at least one LED may include an operational amplifier; wherein a first connection of the LED is coupled to a connection for a DC supply voltage; a transistor which is coupled in series with the first connection and a second connection for the LED and can be operated in an analog manner, wherein the transistor has a control electrode, a reference electrode and a working electrode, wherein the control electrode is coupled to the output of the amplifier, wherein the working electrode is coupled to the connection for a supply voltage; and a current measuring resistor which is coupled in series between the reference electrode and a reference potential, wherein the voltage dropped across the current measuring resistor is coupled to the inverting input of the amplifier; wherein at least one load is coupled in parallel with the first and second connections for the LED. | 07-07-2011 |
20110163694 | ANIMAL-ADAPTED ILLUMINATION METHOD AND SYSTEM - An illumination method, comprising the steps of emitting ( | 07-07-2011 |
20110169422 | PLANAR LIGHT-EMITTING MODULE LIGHTING CIRCUIT AND ILLUMINATING DEVICE - A planar light-emitting module lighting circuit uses a lamp comprising an organic electroluminescence layer and electrodes sandwiching the organic electroluminescence layer as a load, and applies a current to the load so as to cause the organic electroluminescence layer to emit light. In the planer light-emitting module lighting circuit, a current at a lighting start time of the lamp is made small as compared with a current at a stationary lighting time at which a predetermined time period has passed since a lighting start. | 07-14-2011 |
20110169423 | Circuit and Method for Controlling Light Emitting Device, and Integrated Circuit Therefor - The present invention provides a transistor switch on a light emitting device channel, the transistor switch receiving a control voltage VG. A current source circuit controls the current on the light emitting device channel, the current source circuit requiring a minimum voltage VR for normal operation. The present invention further provides a dynamic headroom controller circuit which compares a voltage VS at a current outflow end of the transistor switch with the voltage VR to determine the relationship between the voltage VS and the voltage VR when the control voltage VG is higher than a reference voltage VH, and adjusts the voltage difference between the voltage VS and the voltage VR accordingly. | 07-14-2011 |
20110169424 | ILLUMINATION DEVICE WITH ELECTRICAL VARIABLE SCATTERING ELEMENT - A current limiting controller ( | 07-14-2011 |
20110175550 | APPARATUS FOR DRIVING LOAD - An apparatus for driving loads is disclosed. The apparatus mentioned above for driving a plurality of loads includes a protection module and a current generating module. The protection module has a plurality of detection terminals and generates a plurality of detection results according to a plurality of driving voltages on the detection terminals. The current generating module provides a plurality driving currents according to the detection results for flowing through each of the loads, separately. | 07-21-2011 |
20110175551 | EXAMINATION LIGHT APPARATUS WITH TOUCH-LESS CONTROL - An examination light apparatus including a touch-less control component that enables a user to control the apparatus without requiring physical contact between the user and the apparatus. The apparatus employs an LED control component that is configured to adapt its electrical interface to a variable quantity of light emitting diodes in order to interface with each of a plurality of lamp heads that each can include a unique arrangement and quantity of light emitting diodes. The light emitting diodes (LEDs) provide a high level of light quality, quantity and intensity (luminosity) while requiring low power consumption and low space and weight requirements and are employed without requiring a cooling fan. Uniform mechanical and electrical interfaces between the control component and other portions of the examination lamp provide for efficient and simple manufacturing of various examination light configurations. | 07-21-2011 |
20110181202 | LOCAL DIMMING CONTROL METHOD AND APPARATUS OF EDGE-TYPE BACKLIGHT MODULE - A local dimming control method and apparatus of an edge-type backlight module are provided. The edge-type backlight module has a plurality of backlight units positioned at least one side of a display area. The local dimming control apparatus includes: a configuration unit, for dividing the display area into a plurality of display blocks; and a local dimming control unit, coupled to the configuration unit, for setting respective backlight intensities of the display blocks through controlling a plurality of luminance settings of the backlight units. The local dimming control method includes: dividing the display area into a plurality of display blocks; and performing a local dimming control operation to set respective backlight intensities of the display blocks through controlling a plurality of luminance settings of the backlight units. | 07-28-2011 |
20110181203 | DRIVING CIRCUIT AND METHOD FOR DRIVING CURRENT-DRIVEN DEVICES AND ELECTRONIC DEVICE APPLYING THE SAME - Provided is a light emitting diode (LED) driving circuit for driving a plurality of LED groups. The LED driving circuit includes: a voltage converter, for converting an input voltage into an output voltage, the output voltage coupled to a respective first terminal of each of the LED groups; and a controller, coupled to the voltage converter for controlling the voltage converter, the controller including a plurality of output channel terminals respectively corresponding to a plurality of output channels, one or more of the output channels are enabled and one or more of the output channels are disabled. One or more of the output channel terminals corresponding to the one or more enabled output channels are coupled to second terminals of corresponding ones of the LED groups, and one or more of the output channel terminals corresponding to the one or more disabled output channels are coupled to a reference voltage. | 07-28-2011 |
20110181204 | BALANCING TRANSFORMERS FOR MULTI-LAMP OPERATION - A ring balancer comprising a plurality of balancing transformers facilitates current sharing in a multi-lamp backlight system. The balancing transformers have respective primary windings separately coupled in series with designated lamps and have respective secondary windings coupled together in a closed loop. The secondary windings conduct a common current and the respective primary windings conduct proportional currents to balance currents among the lamps. The ring balancer facilitates automatic lamp striking and the lamps can be advantageously driven by a common voltage source. | 07-28-2011 |
20110193494 | INTEGRATED ON-TIME EXTENSION FOR NON-DISSIPATIVE BLEEDING IN A POWER SUPPLY - An example controller for a switched mode power supply includes a zero-crossing detector, drive logic, and an on-time extension block. The zero-crossing detector is coupled to generate a first signal prior to a zero-crossing of an input voltage of the power supply. The drive logic is to generate a drive logic output signal in response to a feedback signal, where the drive logic output signal is representative of an initial on-time. The on-time extension block is coupled to the zero-crossing detector and to the drive logic to generate a drive signal in response to the drive logic output signal. The drive signal controls switching of a switch to remove charge from a filter capacitor of the power supply. The drive signal is representative of a total on-time of the switch equal to a sum of the initial on-time and an extended on-time, where the extended on-time is responsive to the first signal. | 08-11-2011 |
20110199022 | METHOD AND APPARATUS FOR CONTROLLING AN ILLUMINATION SYSTEM IN A TEMPERATURE CONTROLLED ENVIRONMENT - The present invention relates to a method for controlling the illumination system in a temperature controlled environment, and to a control system for a temperature controlled environment having an illumination system. More specifically, the invention relates to a method wherein output of the illumination system causes a temperature response in the temperature controlled environment, the temperature response being detected by a sensor, the method comprising regulating the temperature adaptively based on the output of the illumination system and the associated temperature response. The control system for the temperature controlled environment, having an illumination system, comprises a sensor proximate to a casing of the temperature controlled environment and is adapted to control the illumination system, wherein output of the illumination system causes a temperature response in the temperature controlled environment, the temperature response being detected by the sensor, and the control system is adapted to regulate the temperature adaptively based on the output of the illumination system and the associated temperature response. | 08-18-2011 |
20110199023 | OPERATING CIRCUIT FOR LEDS - An operating circuit is provided for an LED, which receives a voltage, and which supplies a voltage for the LED via a coil, having a first switch clocked by a control/regulating unit. Power is stored temporarily in the coil when the first switch is activated so that the power is discharged via a diode and via the LED when the first switch is turned off. A capacitor is arranged in parallel to the LED and maintains current through the LED during the demagnetization of the coil. A first switch generates a first sensor signal dependent on the current flowing through the first switch, and/or a second sensor unit, which detects whether demagnetization of the coil unit has occurred and generates a sensor signal. The signals are fed to the control/regulating unit and processed. The control/regulating unit reactivates the first switch when the coil is demagnetized and/or the diode is blocking. | 08-18-2011 |
20110210682 | LED DRIVING CIRCUIT AND POWER CONVERTING CIRCUIT - A power converting circuit having the function of circuit detecting is provided. The power converting circuit has a transistor, a controller and a detecting circuit. The transistor receives an input voltage. The controller is coupled to a control end of the transistor to control the conducting state of the transistor so as to stabilize the output of the power converting circuit. The detecting circuit detects at least one of the control end and the low voltage end of the transistor, and generates a state signal when the detected voltage of any one of the control end and the low voltage end does not fall within a corresponding predetermined voltage range. The state signal is utilized for stopping a power circuit which provides the input voltage providing the input voltage. In addition, a light emitting diode driving circuit having the function of circuit detecting is also provided. | 09-01-2011 |
20110215735 | METHOD AND SYSTEM FOR AUTOMATED LIGHTING CONTROL AND MONITORING - Embodiments of the present invention are directed to automated control of lighting systems at individual-light-fixture, local, regional, and larger-geographical-area levels. One embodiment of the present invention comprises a hierarchical lighting-control system including an automated network-control center that may control up to many millions of individual lighting fixtures and lighting elements, regional routers interconnected to the network-control center or network-control centers by public communications networks, each of which controls hundreds to thousands of individual light fixtures, and light-management units, interconnected to regional routers by radio-frequency communications and/or power-line communications, each of which controls components within a lighting fixture, including lighting elements, associated ballasts, sensors, and other devices. | 09-08-2011 |
20110215736 | METHOD AND SYSTEM FOR LIGHTING CONTROL AND MONITORING - Embodiments of the present invention are directed to control of lighting systems at individual-light-fixture, local, regional, and larger-geographical-area levels. One embodiment of the present invention comprises a hierarchical lighting-control system including an automated network-control center that may control up to many millions of individual lighting fixtures and lighting elements, regional routers interconnected to the network-control center or network-control centers by public communications networks, each of which controls hundreds to thousands of individual light fixtures, and light-management units, interconnected to regional routers by radio-frequency communications and/or power-line communications, each of which controls components within a lighting fixture, including lighting elements. LED-luminaire drivers, sensors, and other devices. | 09-08-2011 |
20110215737 | Voltage Conversion Circuit and Voltage Conversion Method - A voltage conversion circuit comprises a first and a second output (O | 09-08-2011 |
20110227505 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - An organic light emitting display device includes a display unit having pixels located at crossing regions of scan, control, data and sensing lines. Scan, control line, and data drivers respectively supply scan, control, and data signals to the scan, control, and data lines. A switching unit selectively couples the data lines to output lines of the data driver, a reference voltage source, or a negative bias voltage source. A sensing unit senses degradation information of an organic light emitting diode in the pixels and threshold voltage of a driving transistor in the pixels through the sensing lines. A control block stores the sensed degradation information and threshold voltage information. A timing controller is configured to generate a second data by converting an externally inputted first data using the degradation information and the threshold voltage information, and supply the second data to the data driver. | 09-22-2011 |
20110234122 | CIRCUITRY FOR DRIVING LIGHT EMITTING DIODES AND ASSOCIATED METHODS - Circuitry and methods for driving a plurality of LED strings are disclosed herein. In one embodiment, the circuitry comprises a plurality of current regulating circuits electrically coupled to the LED strings and are configured to regulate a current flowing through the LED strings. At least two control circuits are coupled to the current regulating circuits and are configured to generate a control signal according to terminal voltages of the corresponding current regulating circuits. A voltage converter is electrically coupled to the LED strings and to the at least two control circuits, and is configured to regulate the DC driving voltage according to the at least two control signals. | 09-29-2011 |
20110241567 | HYBRID FLOURESCENT LIGHT CONTROLLER - A system may be provided for controlling an amount of light generated by multiple fluorescent lamps based on a desired light level. A dimming circuit may vary the amount of light generated by at least one of the fluorescent lamps based on the desired light level if the desired light level is in a first range of light level values. The fluorescent lamps remain lit as the amount of light generated by the lamps is varied. A switch circuit may switch off a first subset of the fluorescent lamps while a second subset of the fluorescent lamps remains lit if the desired light level is in a second range of light level values. The second range of light level values indicates less light is desired than the first range of light level values indicates. | 10-06-2011 |
20110241568 | METHODS AND SYSTEMS FOR MAINTAINING THE ILLUMINATION INTENSITY OF LIGHT EMITTING DIODES - Systems and methods for maintaining the illumination intensity of one or more LEDs above a minimal intensity level. The systems and methods may include: ( | 10-06-2011 |
20110254467 | TWO-TERMINAL CURRENT CONTROLLER AND RELATED LED LIGHTING DEVICE - A two-terminal current controller regulates a first current flowing through a load, which is coupled in parallel with the two-terminal current controller, according to a voltage established across the two-terminal current controller. When the voltage established across the two-terminal current controller does not exceed a first voltage, the two-terminal current controller conducts a second current related to a rectified AC voltage, thereby limiting the first current to zero and regulating the second current according to the load voltage. When the voltage established across the two-terminal current controller is between the first voltage and a second voltage, the two-terminal current controller conducts the second current, thereby limiting the first current to zero and limiting the second current to a constant value larger than zero. When the voltage established across the two-terminal current controller is greater than second voltage, the two-terminal current controller is turned off. | 10-20-2011 |
20110266972 | Dynamic current equalization for light emitting diode (LED) and other applications - A system includes multiple dynamic current equalizers (DCEs). Each DCE includes a first control loop configured to regulate a current through a circuit branch associated with the dynamic current equalizer. The first control loop includes a first amplifier having two inputs. Each DCE also includes a second control loop configured to regulate a control signal. The second control loop includes a second amplifier having two inputs coupled to the inputs of the first amplifier. The first amplifier has an input offset compared to the second amplifier. The DCEs are configured such that one DCE regulates the control signal while one or more other DCEs regulate the currents through the associated circuit branches based on the control signal. The DCEs can be configured to achieve one or more ratios between multiple currents flowing through multiple circuit branches, where the one or more ratios are defined by resistances coupled to the DCEs. | 11-03-2011 |
20110266973 | SPIDER - The Spider is a lighting control device that has the capability of controlling a light source from multiple switches if pressed randomly, making it possible for a user to turn lights on and off using multiple switches. This device may be placed virtually anywhere within a room to allow the user to conveniently and safely turn their lights on and off with ease, from the user-preferred location(s). The device also features a time delay, which enables the user to turn on a light and then preset the amount of time before it automatically turns off. The invention consists of an enclosure with touch-pad capability and may include numerous ICs, capacitors, IC regulators, resistors, regular electrical switches, AC outlets, push-button switches, and a transformer for the power supply. The device may manipulate up to 12 push-button switches or more in certain embodiments. | 11-03-2011 |
20110266974 | ENERGY SAVING LIGHTING SYSTEMS AND UNITS PROVIDING COORDINATED OPERATION OF HOLDING CURRENT UNITS - Holding current circuits in light sources controlled by a dimmer are operated in a coordinated manner to maintain proper operation of the dimmer without wasting energy. A plurality of light sources each including a separate holding current circuit may be controlled by a dimmer. The holding current units are selectively disabled and/or a maximum holding current drawn by the holding current units are selectively adjusted to maintain a desired current draw. | 11-03-2011 |
20110273112 | LIGHT EMITTING DRIVER - There is provided a light emitting driver. A light emitting driver according to an aspect of the invention may include: an LED driving section driving a light emitting part according to a detection value of the light emitting part including a plurality of light emitting devices; and a detection section transmitting the detection value to the LED driving section according to a detection voltage corresponding to a magnitude of a driving current flowing through the light emitting part when an output voltage, being applied to the light emitting part, has a value smaller than a predetermined output voltage reference value, and transmitting the detection value to the LED driving section according to a magnitude of the output voltage. | 11-10-2011 |
20110279060 | Control Circuit with Fast Recovery - The invention concerns a control circuit arranged to generate a control signal (V | 11-17-2011 |
20110285316 | Error Amplifier and LED Circuit Comprising the Same - An error amplifier and a LED circuit comprising the same are provided. The LED circuit comprises an inductor, a group of LEDs and a power MOS connected to the inductor, an error amplifier and a pulse width modulator controlling the gate of the power MOS according to an error amplifier output. The error amplifier comprises a differential input stage, an output stage having a NMOS, a PMOS and an adjusting current source connected to the gate of the PMOS. During a first operation mode, a control voltage makes the adjusting current source turn on, and during a second operation mode, the control voltage makes the adjusting current source turn off. | 11-24-2011 |
20110285317 | METHOD AND CIRCUIT ARRANGEMENT FOR CONTROLLING A LOAD - A method for control and discharge control of an electrical load, in which the control and discharge occurs by means of a control frame and a discharge frame, and in which one control frame and one discharge frame represent one switching cycle for the electrical load. A plurality of switching cycles are arranged following one another, wherein a controllable switch is connected in parallel to each point load so that each point load can be switched independently of the other point load during the switching cycle. A control unit monitors the electrical current flowing in the electrical load, and the control unit uses an actual/setpoint comparison to control the current to an adjustable setpoint so that a current that is as constant as possible flows into the electrical load. The controllable switches switch on the point loads during the control frame of a switching cycle, and the controllable switches switch off the point loads during the discharge frame of a switching cycle. | 11-24-2011 |
20110285318 | Compact and efficient driver for multiple light emitting diodes (LEDs) - A method includes receiving a variable reference voltage at a power converter and generating a regulated output voltage based on the variable reference voltage. The method also includes sequentially driving multiple sets of light emitting diodes (LEDs) using the regulated output voltage, where each set includes at least one LED. The variable reference voltage varies based on the set of LEDs being driven. For example, the method could include receiving a first reference voltage, generating a first output voltage based on the first reference voltage, and driving a first set of LEDs using the first output voltage. The method could then include receiving a second reference voltage, generating a second output voltage based on the second reference voltage, and driving a second set of LEDs using the second output voltage. At least one additional set of LEDs could be driven concurrently with the sequential driving of the multiple sets of LEDs. | 11-24-2011 |
20110285319 | LIGHT SOURCE MODULE - A light source module is provided. The light source module includes a full wave rectifier, a constant current output integrated circuit (IC) and at least one high operating voltage light emitting diode (HVLED) die coupled between the constant current output IC and a ground. The full wave rectifier generates a rectified signal according to an alternating current (AC) power. The constant current output IC outputs a constant current signal according to the rectified signal. A brightness of the HVLED die is determined by the constant current signal. | 11-24-2011 |
20110285320 | POWER SUPPLY FOR AN AIRFIELD LED SIGN - In an example embodiment, there is disclosed a power supply that comprises a rectifier for receiving an alternating current, a boost circuit coupled to the rectifier and receiving the rectified alternating current, and a processor coupled to the boost circuit. The processor is operable to control the operation of the boost circuit. The processor is operable to control the boost circuit to provide a constant, regulated current to a load by controlling the voltage at the output of the boost circuit. The constant, regulated current provided to the load is independent of the magnitude of the alternating current | 11-24-2011 |
20110291590 | SWITCHING MODE POWER SUPPLIES AND CONTROL METHODS USED THEREIN TO PROVIDE POWER FACTOR CORRECTION AND CONSTANT OUTPUT CURRENT - Switching mode power supplies (SMPS) and control methods used thereof are disclosed. An exemplifying SMPS is coupled to control an inductive device. The SMPS comprises a voltage divider and a peak controller. The voltage divider comprises a resistor and a controllable resistor connected in series through a connection node. The resistance of the controllable resistor is variable, controlled by a control signal. The voltage divider generates a limiting signal at the connection node based on a line voltage at a line voltage power node. The peak controller controls a peak current flowing through the inductive device according to the limiting signal. | 12-01-2011 |
20110291591 | DRIVING CIRCUIT AND CONTROL CIRCUIT - A driving circuit, comprising a power supply, a transistor unit and a feedback control circuit, is disclosed. The power supply is adaptor to provide an electric power to drive a load. The transistor unit comprises at least one load coupling end to couple to the load for adjusting an amount of current flowing through the load. The feedback control circuit controls an amount of the electric power provided by the power supply according to a voltage level of the least one load coupling end. Wherein, the feedback control circuit comprises an error amplifying circuit and a feedback control switch. The error amplifying circuit generates an error amplified signal according to the voltage level of the least one load coupling end, and the feedback control switch is coupled to an output of the error amplifying circuit and is switched between a turn-on state and a turn-off state based on a dimming signal. | 12-01-2011 |
20110298394 | HIGH EFFICIENCY FLASHLIGHT BEZEL - A high efficiency flashlight bezel has a heat sink that controls the heat generated by at least one LED light source. The bezel is elongated to accommodate the heat sink. A constant current driver is attached to the back of the heat sink and connects the LED to the electrical power source housed in the flashlight body. The constant current driver keeps the light output steady throughout the entire run time and provides auto dimming for low battery reserve power. The bezel is adapted to fit on a traditional flashlight body thereby upgrading a flashlight without discarding it. The light output is four times the light output than conventional flashlights. Additionally, bulb life is greatly enhanced. The bezel is adapted to fit on a traditional flashlight body thereby upgrading a flashlight without discarding it. | 12-08-2011 |
20110316446 | POWER CONVERTER WITH COMPENSATION CIRCUIT FOR ADJUSTING OUTPUT CURRENT PROVIDED TO A CONSTANT LOAD - A power converter for constant loads includes an energy transfer element, a switch, a controller, and a compensation circuit. The energy transfer element is coupled to receive a rectified voltage having a non-blocked portion and a blocked portion, where an amount of the blocked portion corresponds to a phase angle. The controller is coupled to control switching of the switch to regulate an output current of the power converter in response to a plurality of signals. The plurality of signals includes a peak input voltage signal and a feedback signal, where the peak input voltage signal is representative of a peak input voltage of the power converter and the feedback signal is representative of the output voltage of the power converter. The compensation circuit is coupled to adjust at least one of the plurality of signals in response to the phase angle exceeding a phase angle threshold. | 12-29-2011 |
20110316447 | CIRCUITS AND METHODS FOR POWERING LIGHT SOURCES - A controller for regulating a current through a light-emitting diode (LED) light source includes a first reference pin for receiving a first reference signal indicative of a target average level, and a dimming control pin for receiving a dimming signal. The controller regulates an average level of the current to the target average level. The current is regulated according to the first reference signal and a ramp signal if the dimming signal has a first level. The ramp signal is synchronized with the dimming signal. The current is cut off if the dimming signal has a second level. | 12-29-2011 |
20110316448 | SYSTEM AND APPARATUS FOR CONTROLLING LIGHT INTENSITY OUTPUT OF LIGHT EMITTING DIODE ARRAYS - Disclosed herein is a system for controlling a drive current of an LED that includes a controller configured to estimate a junction temperature of the LED at a location of a heat sink. The system also includes a driver configured to change a drive current to the LED in response to a command from the controller. Also disclosed is a method of determining drive currents for LEDs in an array that includes determining a required light output intensity at a first time for each LED; estimating heat generated by each LED at the first time; solving heat flow equations for the array at the first time; estimating a junction temperature for each of the LEDs at the first time; and determining a drive current for the required light intensity at the first time for each of the LEDs based on the junction temperature. | 12-29-2011 |
20120001570 | METHOD OF CONTROLLING AN LED, AND AN LED CONTROLLER - A method is disclosed of controlling a LED, comprising driving the LED with a DC current for a first time, interrupting the DC current for a second time such that the first time and the second time sum to a period, determining at least one characteristic of the LED whilst the DC current is interrupted, and controlling the DC current during a subsequent period in dependence on the at least one characteristic. The invention thus benefits from the simplicity of DC operation. By operating at the LED in a DC mode, rather than say in a PWM mode, the requirement to be able to adjust the duty cycle is avoided. By including interruptions to the DC current, it is possible to utilise the LED itself to act as a sensor in order to determine a characteristic of the LED. The need for additional sensors is thereby avoided. | 01-05-2012 |
20120007522 | ILLUMINATION DEVICE - An illumination device configured to diffuse essential oils includes a plurality of light emitting diodes, a heat dissipation module, a thermal detector, and a controller. The heat dissipation module is thermally connected to the light emitting diodes. A receiving part is defined in the heat dissipation module. The receiving part is configured for receiving essential oils. The thermal detector is adjacent to the receiving part and configured for detecting a temperature of the essential oils. The controller is electrically connected to the light emitting diodes and the thermal detector. The essential oils are heated by the heat generated by the light emitting diodes through the heat dissipation module. The temperature of the essential oils is controlled by the controller according to a thermal signal from the thermal detector. | 01-12-2012 |
20120007523 | BACKLIGHT MODULE AND AN LCD THEREOF - A backlight module and a liquid crystal display (LCD) device thereof are proposed. The backlight module includes a DC/DC converter producing a positive/negative voltage level. The backlight module can output the positive and negative levels of driving voltage from an output end of the inverter to drive LEDs through alternately switching. Besides, a constant current can be obtained with designs of power on/off periods and energy-storing inductors to prevent LEDs employing current limiting resistors from having too low current efficiency and from being burnt out. | 01-12-2012 |
20120013266 | APPARATUS FOR DRIVING LIGHT EMITTING DEVICE WITH OVER-CURRENT AND OVER-VOLTAGE PROTECTION - An apparatus for driving a light emitting part includes a DC/DC converter for supplying an amplified driving voltage to the light emitting part; a constant current circuit for controlling a current flowing through the light emitting part; a converter controller for controlling the DC/DC converter and the constant current circuit; a current sensor for sensing and converting a current flowing to an anode of the light emitting part into a voltage; a feedback controller for controlling a feedback current according to a magnitude of the voltage from the current sensor; an optical coupling part for performing optical coupling to transmit the feedback current as a feedback voltage; and a main controller for determining whether an over-current is occurring according to a magnitude of the feedback voltage and stopping an operation of the converter controller when the over-current is occurring. | 01-19-2012 |
20120013267 | LED POWER SUPPLY SYSTEMS AND METHODS - One aspect of the present invention includes a light-emitting diode (LED) power supply system. The system includes an LED regulator configured to monitor at least one LED voltage associated with a respective at least one activated LED string and to generate an LED regulation voltage based on the at least one LED voltage relative to an LED power voltage that provides power to the at least one activated LED string. The system also includes a power converter configured to generate the LED power voltage and to regulate the LED power voltage based on the LED regulation voltage. | 01-19-2012 |
20120032610 | POWER CONVERTER HAVING A FEEDBACK CIRCUIT FOR CONSTANT LOADS - A power converter having a feedback circuit for constant loads includes an input, a switch, an input voltage sense circuit, a feedback circuit, and a controller. The input is to be coupled to receive an input voltage and the switch is coupled to the input. The input voltage sense circuit is coupled to the input to generate an input voltage sense signal representative of the input voltage. The feedback circuit is coupled to an output of the power converter, where the output is electrically coupled to the input. The feedback circuit generates a feedback signal representative of an output voltage of the power converter. The controller is coupled to the feedback circuit and to the input voltage sense circuit to control switching of the switch to regulate an output current at the output of the power converter in response to the feedback signal and the input voltage sense signal. | 02-09-2012 |
20120032611 | LED EMITTING DEVICE AND DRIVING METHOD THEREOF - The present invention relates to an LED emitting device and a driving method thereof including at least two LED channels. | 02-09-2012 |
20120032612 | THERMAL CONTROL OF SOLID STATE LIGHT SOURCES BY VARIABLE SERIES IMPEDANCE - A thermal protection circuit, and system and method including same, is provided. The circuit includes a variable impedance circuit configured to be coupled to a constant current source and a plurality of solid state light sources. The constant current source provides a current to the plurality of solid state light sources and provides an output voltage to establish a supply voltage for the circuit. The circuit also includes a temperature sensor configured to sense a temperature of the plurality of solid state light sources. The circuit also includes a control circuit configured to receive the supply voltage and to drive the variable impedance circuit based on the sensed temperature, to adjust the current to the plurality of solid state light sources when the supply voltage is a least a minimum supply voltage of the control circuit. | 02-09-2012 |
20120032613 | CIRCUITS AND METHODS FOR DRIVING LIGHT SOURCES - A driving circuit for powering a light-emitting diode (LED) light source includes a converter circuit, an energy storage element and a switch element. The converter circuit provides a first output voltage on a first power line to provide power to the LED light source and provides a second output voltage on a second power line that is less than the first output voltage. The energy storage element is charged and discharged to regulate a current through the LED light source. The switch element operates in a first state during which the energy storage element is charged and operates in a second state during which the energy storage element is discharged. The converter circuit provides the second output voltage to maintain an operating voltage across the switch element less than the first output voltage during both the first state and the second state. | 02-09-2012 |
20120038292 | CIRCUITS AND METHODS FOR DRIVING LIGHT SOURCES - A driving circuit for driving a light source includes a converter and a dimming controller. The converter coupled to a power source is operable for receiving power from the power source and for providing regulated power to the light source according to control signals. The dimming controller coupled to the converter is operable for monitoring a power switch coupled between the power source and the converter, for receiving a color change signal indicating a first set of operations of the power switch and a dimming request signal indicating a second set of operations of the power switch, for controlling the control signals to change the color of the light source in response to the color change signal, and for controlling the control signals to adjust the brightness of the light source in response to the dimming request signal. | 02-16-2012 |
20120043912 | Single inductor mutiple LED string driver - A single inductor multiple LED string driver comprises a switch control circuit and a current-sensing control circuit. The switch control circuit generates a plurality of digital control signals that are used to control a plurality of switches coupled to a plurality of strings of LEDs. Each switch is selectively turned on and off by each corresponding digital control signal. The current-sensing control circuit determines an integrated charge amount provided by each current that flows from an input voltage through each LED string, through each switch, through a common inductor, and through a main switch to ground. In response to the determined integrated charge amount, the current-sensing control circuit generates an on-time control signal that controls the on-time of each switch such that the average current flowing across each LED string is equal to each other. Furthermore, the total current flowing across each LED string is regulated to a predefined value. | 02-23-2012 |
20120056559 | INTEGRATED CIRCUIT FOR DRIVING HIGH-VOLTAGE LED LAMP - An integrated circuit for driving high-voltage LED lamps is applied to a rectified alternative current (AC) power and a plurality of LED stacks. The integrated circuit includes a control unit, a plurality of current-clamping units which electrically connect to the control unit and the LED stacks respectively, and a plurality of current-sensing units which electrically connect to the current-clamping units and the control unit. When the rectified power is switched on, the current-sensing unit constantly monitors the electrical current flowing through the respective current-clamping unit and feeds back the monitored data to the control unit. The control unit sequentially switches on or off the current-clamping units according to the combinatorial logic state of the monitored data. | 03-08-2012 |
20120056560 | DC POWER SOURCE UNIT AND LED LAMP SYSTEM - A DC power source unit | 03-08-2012 |
20120056561 | BACKLIGHT APPARATUS, DISPLAY APPARATUS AND LIGHTING APPARATUS - A backlight apparatus including: a light-emitting element block on which a plurality of light-emitting elements are arranged; a plurality of driving control units each of which is configured to control driving for each of the plurality of light-emitting elements by supplying a current to the light-emitting element block; and a main control unit configured to generate a control signal for performing driving control for each of the plurality of driving control units, and to output the control signal to one of the plurality of driving control units, wherein the plurality of driving control units are connected in a daisy chain scheme, and the main control unit includes, in the control signal, identification information for identifying at least one of the plurality of driving control units and control data for performing driving control on light-emitting elements assigned to a driving control unit identified by the identification information. | 03-08-2012 |
20120062147 | High efficiency drive method for driving LED devices - A set of unique concept of driving multiple LED strings with non-dissipative current balancing and non-dissipative synchronous current regulation is disclosed. Inductive components and capacitive components are utilized in the non-dissipative current balancing approach to drive the LED strings from AC supply source. The synchronous regulation method regulates the LED current with pulse width modulated switching action in synchronous with the AC supply source frequency. Both simultaneous and independent control of the LED string operation can be realized with synchronous regulation method when combined with suitable circuit configuration. | 03-15-2012 |
20120062148 | LUMINESCENCE DRIVING APPARATUS, DISPLAY APPARATUS, AND DRIVING METHOD THEREOF - A luminescence driving apparatus, a display apparatus, and a driving method thereof are provided. The luminescence driving apparatus includes: a driving circuit which is connected to a light-emitting device and drives the light-emitting device according to a control pulse having a fluctuating amplitude; a controller which, if an internal current of the light-emitting device is less than or equal to a threshold value, selects a position from among a plurality of different positions of the driving circuit based on the amplitude of the control pulse, senses a voltage at the selected position and determines whether a short-circuit has occurred between the light-emitting device and the driving circuit using a level of the sensed voltage; and a protector which if it is determined that the short-circuit has occurred, performs a protection operation with respect to the light-emitting device. | 03-15-2012 |
20120068623 | ELECTRICAL WIRING DEVICE - The present invention is directed to an electrical wiring device that includes a lighting assembly module disposed in the housing assembly and coupled to a set of line terminals, the lighting assembly includes at least one light emitting device. An ambient light sensor is disposed in the housing assembly and substantially optically decoupled from the lighting assembly, the ambient light sensor provides an electrical sensor signal corresponding to an ambient light level at or proximate to the ambient light sensor. A rechargeable electrical storage device is coupled to the set of line terminals, the rechargeable electrical storage device being charged by the source of AC power to a predetermined voltage threshold. A control circuit is coupled to the set of line terminals, the lighting assembly module and the ambient light sensor. The control circuit is configured to provide a modulated lighting control signal to the lighting assembly module when AC power is being provided by the source of AC power, the modulated lighting control signal being a function of the AC power and the electrical sensor signal, the modulated lighting control signal being configured to adjust an intensity of the light emitted by the at least one light emitting device such that the intensity is a function of the ambient light level. The control circuit is further configured to provide a second lighting control signal configured to turn the lighting assembly ON at a predetermined intensity for a predetermined period of time when AC power is not being provided by the source of AC power, the second lighting control signal being provided by the rechargeable electrical storage device. | 03-22-2012 |
20120081035 | Power Conversion and Control Systems and Methods for Solid-State Lighting - A solid-state lighting system comprises a plurality of light-emitting devices (e.g., light-emitting diodes) and an alternating current to direct current (AC-DC) converter that converts AC power to DC power for powering the plurality of light-emitting devices. The AC-DC converter is configured to perform AC-DC conversion directly, without the need for or use of a bridge rectifier or step-down transformer. According to one aspect of the invention, the light-emitting devices of the solid-state lighting system are autonomous and individually powered by a plurality of DC power supplies generated from the DC power produced by the AC-DC converter. According to another aspect, a plurality of phase-offset dimmer control signals are generated based on waveform distortions in a dimming signal produced by a conventional dimmer switch. The phase-offset dimmer control signals are used to individually control the dimming of the light-emitting devices. | 04-05-2012 |
20120081036 | AUTOMATIC DROPOUT PREVENTION IN LED DRIVERS - A system and method is provided for preventing a dropout of an LED current. In one embodiment of the present invention, the system includes a voltage source, a first circuit, a second circuit, a controller, and at least one LED. The first circuit receives a reference voltage from the voltage source, receives set-point current data from the controller, and uses the reference voltage and the set-point current data to produce a threshold voltage. The threshold voltage is then provided to the second circuit, where it is converted into an output current, which is drawn through the LED. The second circuit then compares the threshold voltage to an output voltage corresponding to the output current, and provides an output to the controller. The controller then uses the output to determine whether a dropout has occurred. If a dropout has occurred, then second set-point current data is provided to the first circuit. | 04-05-2012 |
20120081037 | CIRCUIT AND LIGHTING SYSTEM FOR DIMMING AN ILLUMINANT - The invention relates to a method and to a circuit arrangement for dimming an illuminant ( | 04-05-2012 |
20120098461 | POWER SUPPLY DETECTING CIRCUIT - A phase sequence detecting apparatus for a three-phase alternating current (AC) power includes a signal converting module and a phase sequence indicating module comprising plural indicating lights. The phase sequence detecting apparatus further includes a control module. The signal converting module is configured to receive three phase power signals output from the three-phase AC power, configured to convert the three phase power signals and send the converted signals to the control module. The control module controls power-on sequence of the indicating lights according to signals output from the signal converting module. | 04-26-2012 |
20120098462 | LED Driver Circuit, Light Source Device, And LCD Device - An LED driver circuit which provides a cost reduction is provided by employing a circuit configuration which allows a size reduction. In at least one example embodiment, the LED driver circuit includes a first switching element, a second switching element, a sense resistor, a sensing unit, a calculator, and a driver. The plurality of LEDs, the first switching element, the second switching element, and the sense resistor are coupled to each other in series in this order. The sensing unit receives a voltage at a node between the second switching element and the sense resistor, and generates voltage data representing the voltage. The calculator calculates a temporal average of a current flowing through the LEDs based on the voltage data, and generates current data corresponding to the temporal average. The driver drives the first switching element and the second switching element based on the current data. | 04-26-2012 |
20120104973 | LAMP CONTROL CIRCUIT - A lamp control circuit includes a first switch circuit receiving a voltage from a power supply after a control is turned on and outputs a first control signal, a count circuit receives the first control signal and outputs a second control signal, a gate circuit receives the second control signal and outputs a third control signal, a second switch circuit includes a number of electronic switches to receive the third control signal and controls the electronic switches to be turned on or turned off, and a lighting circuit including a number of light emitting diode (LED) groups. Each LED group includes an LED. When an electronic switch connected to an LED group is turned on, the LED of the corresponding LED group is lit. When an electronic switch connected to an LED group is turned off, the LED of the LED group does not light. | 05-03-2012 |
20120104974 | CONTROL UNIT FOR A LED ASSEMBLY AND LIGHTING SYSTEM - A control unit for a LED assembly includes a first and second LED unit, the LED units being serial connected. The LED assembly, in use, is powered by a switched mode power supply. The control unit being arranged to receive an input signal representing a desired output characteristic of the LED assembly, determine a first and second duty cycle for respective LED units associated with a nominal current of the switched mode power supply, for providing the desired output characteristic, determine the largest of the first and second duty cycles for respective LED units, determine a reduced current based on at least the largest of the duty cycles, adjust the first and second duty cycle for respective LED units based on the reduced current, and provide an output signal for the LED assembly and the switched mode power supply based on the adjusted first and second duty cycles and the reduced current for obtaining the desired characteristic. | 05-03-2012 |
20120119676 | FLYBACK POWER CONVERTER WITH DIVIDED ENERGY TRANSFER ELEMENT - A divided structure energy transfer assembly for use in a flyback power converter is disclosed. An example energy transfer includes first and second magnetic cores. First and second input windings are wound around the first and second magnetic cores, respectively. The first input winding is coupled in parallel with the second input winding. First and second output windings are wound around the first and second magnetic cores, respectively. A rectified output of the first output winding is coupled in series with a rectified output of the second output winding. The first and second input windings have a first polarity and the first and second output windings have a second polarity. The first polarity is an opposite of the second polarity. | 05-17-2012 |
20120133299 | Multi Channel LED Driver - A driver circuit includes a buck converter associated with each LED chain for supplying a load current thereto. The buck converter receives an input voltage and is configured to provide a supply voltage to the associated LED chain such that the resulting load current of the LED chain matches at least approximately a predefined reference current value. The driver circuit further includes a switching converter that receives a driver supply voltage from a power supply and provides, as an output voltage, the input voltage for the buck converters. The switching converter is configured to provide an input voltage to the buck converters such that the maximum of the ratios between the input voltage and the supply voltages provided to the LED chains matches a predefined tolerance reference ratio. | 05-31-2012 |
20120133300 | COLOR MIXING AND DESATURATION WITH REDUCED NUMBER OF CONVERTERS - A system is disclosed to automatically establish proper biasing for light sources in a color mixed projection system having multiple light sources which are active at the same time. Responsive to a feedback signal, a single DC-DC converter generates the bias voltage for the light sources. Comparators compare a headroom signal for each light source to a reference value to generate comparator output signals. The comparator output signals are processed by a channel selector and a digital filter/DAC module. The channel selector controls a switch to selectively provide and combine a headroom signal with an output of the digital filter/DAC module to create the feedback signal. By monitoring each headroom value, the bias voltage is adjusted, based on the feedback signal, until every headroom signal reaches the reference value thereby achieving sufficient biasing for every active light source in the color mixed projection system. | 05-31-2012 |
20120133301 | ACTIVE ENCLOSURE FOR COMPUTING DEVICE - A computing device is disclosed. The computing device includes a housing having an illuminable portion. The computing device also includes a light device disposed inside the housing. The light device is configured to illuminate the illuminable portion. | 05-31-2012 |
20120139446 | METHOD AND SYSTEM FOR LIGHTING CONTROL - A system and method for controlling an entertainment system is provided. The system can have at least one light source to generate variable light output and at least one controller coupled to the at least one light source to control the variable light output based on a number of interruptions of power supplied to the apparatus over a pre-determined time period. The variable light output can be a light temperature. The at least one light source can be a plurality of light sources, with the at least one controller having a plurality of addresses and each of the addresses designating one or more of the plurality of light sources to be controlled. The at least one controller can synchronize or unsynchronize the plurality of light sources. | 06-07-2012 |
20120146545 | DRIVER CIRCUIT WITH PRIMARY SIDE STATE ESTIMATOR FOR INFERRED OUTPUT CURRENT FEEDBACK SENSING - A LED driver circuit and an isolated DC-DC converter therefor are presented, in which a primary side state estimator circuit is provided for inferred output current sensing for closed loop control of pulse width modulated flyback or buck converters. | 06-14-2012 |
20120146546 | LOAD CURRENT BALANCING CIRCUIT - A load current balancing circuit that operates with a direct current (DC) power supply includes at least one transformer having a first inductive element adapted to couple in series with a first load and a second inductive element adapted to couple in series with a second load. The first load is parallel to the second load. The load balancing circuit further includes at least one switch adapted to operate at one or more switching frequencies associated with at least one driving signal. The switch is configured to periodically interrupt respective current flows through the first inductive element and second inductive element substantially simultaneously. | 06-14-2012 |
20120146547 | Power Supply Device and Method for a Lighting System with Light-Emitting Diodes and Lighting Assembly Comprising One Such Device - The power supply device and method comprise selection of a supply voltage or current to be applied to a lighting system with light-emitting diodes. A processing circuit performs automatic detection of the direction of connection of said lighting system by injecting at least one polarity test current pulse for detection of current flow. Monitoring of the supply voltage and current during the polarity test current pulse, and reversal of the direction of the current or voltage for monitoring the direction of current flow for attribution of the direction of the supply voltage or current, are also performed. The device and method also comprise detection of the type of lighting system to be supplied with regulated voltage or with regulated current according to the dynamic resistance of said system. | 06-14-2012 |
20120146548 | LED-BASED LIGHTING FIXTURES AND RELATED METHODS FOR THERMAL MANAGEMENT - Disclosed is a light emitting diode (LED)-based lighting fixture including an LED and a voltage supply configured to provide electrical power to the LED. The LED-based lighting fixture also includes a temperature sensor configured to determine a temperature at a selected location of the lighting fixture; and a controller connected between the temperature sensor and the voltage supply and configured to determine an ambient temperature and a drive current based on the ambient temperature and to provide an input voltage to the LED based on the drive current. A method of controlling the operational lifetime of an LED, a computer readable medium and an apparatus are also described. | 06-14-2012 |
20120161667 | LUMINAIRE WITH TOUCH PATTERN CONTROL INTERFACE - The present invention relates to a luminaire ( | 06-28-2012 |
20120169252 | LED DRIVING CIRCUIT - A Light Emitting Diode (LED) driving circuit includes a power supply circuit, an LED circuit, and a switch control circuit. The power supply circuit includes an energy storage device and a switch component connected to the energy storage device. The energy storage device stores electric power when the switch component is switched on. The LED circuit is connected to the energy storage device. The switch control circuit is connected to the switch component, and is adapted to control the on/off states of the switch component, thereby adjusting a current flowing through the LED circuit. | 07-05-2012 |
20120169253 | MODIFYING VISUAL PERCEPTION - Various embodiments directed to modifying and enhancing visual perception are disclosed. One embodiment is directed to a camera which includes a lens system for capturing images and a lighting system providing key light above the lens system and providing fill light below the lens system. A processor controls one or more operations of the camera, including automatically enhancing the captured images and presenting the enhanced images on a display. The system and method for modifying visual perception may also be directed to a video camera mirror system, a seating system, a cosmetic package, a lipstick packaging, a polarized mirror, an illuminated cosmetic brush, a personal portrait photography management system and an illumination system for modifying visual perception. | 07-05-2012 |
20120169254 | DEVICE AND METHOD FOR CONTROLLING A LIGHTING SYSTEM BY PROXIMITY SENSING OF A SPOT-LIGHT CONTROL DEVICE AND SPOTLIGHT CONTROL DEVICE - Disclosed are methods and apparatus for controlling a lighting system by proximity sensing of a spotlight control device, particularly to controlling a spotlight generated by a lighting system such as a large LED lighting array by means of a spotlight control device. A device is provided for controlling a lighting system by proximity sensing of a spotlight control device, wherein a predefined area around the spotlight control device is illuminated if a proximity sensor signals presence of the spotlight control device within the predefined area. | 07-05-2012 |
20120176063 | SYSTEMS AND METHODS FOR CONTROLLING AN OUTPUT OF A LIGHT FIXTURE - Systems and methods for controlling an output of a light fixture. A light fixture of one construction includes four or more light sources and is configured to produce an output that mimics the color temperature changes of an ideal black-body radiator based on one or more input parameters. The input parameters correspond to, for example, a desired target color and an intensity for the desired target color. A white point setting is determined based on the one or more input parameters and a relationship between the one or more input parameters and the color temperature of an ideal black-body radiator. A color temperature transform is selected based on the white point color temperature setting, and is used to determine a color coordinate corresponding to a modified target color. A set of light source output values corresponding to the modified target color are identified, and the light sources are driven to the identified output values. | 07-12-2012 |
20120176064 | LED DRIVER AND LIGHTING APPLICATION FOR WATTAGE CONTROL - An LED driver for powering an LED fixture is described, the LED driver comprising:
| 07-12-2012 |
20120176065 | DRIVE CIRCUIT - A plurality of resistive paths are coupled in parallel to a common node. A high side driver is operable responsive to first control signals to selectively supply current to certain ones of the resistive paths. A low side driver, including a plurality of selectively actuated current sink paths, is provided to sink current from the common node. A control logic circuit actuates a current sink path within the low side driver for each resistive path that is selectively supplied current by the high side driver. A substantially constant low side voltage drop through these sink paths is provided regardless of the number of resistive paths that are supplied current by the high side driver. A switched high side and low side configuration operating in an analogous way is also disclosed. | 07-12-2012 |
20120187866 | MULTI-LAMP DRIVING SYSTEM - A multi-lamp driving system includes a filter circuit, a switch circuit, a pulse width modulation (PWM) controller, a protection circuit, transformers, and an abnormity detection circuit. Primary windings of the transformers are connected to the switch circuit in parallel, and high voltage terminals of secondary windings of the transformers are connected to lamps respectively. The abnormity detection circuit converts current signals flowing through the lamps into voltage signals, and retrieves highest and lowest voltage signals corresponding to highest and lowest current signal respectively. Then the abnormity detection circuit determines if a difference between the highest voltage signal and the lowest voltage signal exceeds a predetermined value, and generates a trigger signal if the difference between the highest and lowest voltage signals exceeds the predetermined value. The protection circuit receives the trigger signal, and controls the PWM controller to stop outputting PWM signals to the switch circuit. | 07-26-2012 |
20120187867 | Lighting Control System - A lighting control system ( | 07-26-2012 |
20120200235 | LAMP POWERING TECHNOLOGY - A device is designed for channeling electricity to a lamp, and adjusts downwards the amount of power channeled to the lamp as a function of available electrical energy in the source. In so doing, a reduction in the available energy in the source causes a less proportionate reduction in luminosity of the lamp. This might be accomplished by passing the electricity through a passive network of resistors and diodes on its way down to the lamp. In one example, the electrical energy source may be a battery that is powered by one or more solar panels. In that case, the device may also perform the function of protecting the battery from being overly charged. It channels downwards a greater daily lamp's energy consumption than that of daily electrical charging from the solar panels, when the available battery energy is near its full capacity. | 08-09-2012 |
20120206064 | Hybrid Power Control System - A hybrid power control system for providing dynamic power control to illumination systems in which a power source can supply any one of a range of AC or DC voltages. One or more switch mode power supplies incorporating one or more linear and switch mode regulator circuits combined to dynamically control current, voltage and power to the illumination system. A microprocessor or other integrated circuit device to receive and send control information in order to regulate the power to a light emitting device One or more output drive stage(s) capable of delivering a wide dynamic current range, channel bonding and protection circuitry compatible with standard or common anode illumination systems. | 08-16-2012 |
20120217898 | ELECTRICAL LOAD DRIVING CIRCUIT - Circuits and methods for driving electrical loads, where each is driven according to a desired current. A circuit comprising a switch mode converter comprising a transformer with primary and secondary windings, the primary connected to a voltage supply via one or more input control switches; output circuits, each comprising a switch connecting a load to an output of the secondary, each load series connected with a respective switch and in parallel with a capacitor; and a switching control circuit for control of each of the output circuit switches and for sensing a current through the loads. The switching control circuit operates the output circuit switches to maintain set current through the loads, the switching control circuit configured in successive output cycles of the switch mode converter to operate each output circuit switch in an order dependent on a forward voltage of each of the respective loads. | 08-30-2012 |
20120217899 | LIGHTING DEVICE AND LUMINAIRE - According to one embodiment, a lighting device includes a control circuit that includes a threshold for a case where a pair of the illumination lamps are connected in series between a positive output end and a negative output end of a power supply circuit, and a threshold for a case where one illumination lamp is connected between the positive output end and the negative output end of the power supply circuit. The control circuit determines the connected lamp number of the illumination lamps to a direct-current power supply device based on a voltage between the positive output end and the negative output end of the power supply circuit and a voltage between a non-potential connection end and the positive output end or the negative output end, and selects the threshold corresponding to the connected lamp number to control the direct-current power supply device. | 08-30-2012 |
20120217900 | LED DRIVING CIRCUIT, LED ILLUMINATION APPLIANCE, LED ILLUMINATOR, AND LED ILLUMINATION SYSTEM - Provided is an LED driving circuit ( | 08-30-2012 |
20120223657 | Semiconductor Light Emitting Devices Having Selectable And/or Adjustable Color Points and Related Methods - Semiconductor light emitting devices include a first string of at least one blue-shifted-yellow LED, a second string of at least one blue-shifted-green LED, and a third string of at least one LED that emits light in the red color range. These devices include at least a first circuit that is configured to provide an operating current to at least one of the first LED or the second LED and a second circuit that is configured to provide an operating current to the third light source. The drive currents supplied by the first and second circuits may be independently controlled to set a color point of the light emitting device at a desired color point. | 09-06-2012 |
20120229048 | LUMINAIRE SYSTEM - A luminaire produces lighting as a series of frames of constant spectral content. The luminaire includes an interpreter for executing scripts that describe the spectral contents of respective frames. The scripts may include spectral data and executable code for altering the spectral data. In particular, a frame descriptor may include data for a frame, a repeat count indicating a number of frames, and an identifier for a subroutine to be called for each frame described by the frame descriptor. One or more luminaires can be network connected to one or more computers running applications providing user interfaces for script generation. A standardized interface can control communications with the luminaires and convert scripts from applications to a format that luminaires can interpret. | 09-13-2012 |
20120235597 | LIGHTING POWER CIRCUIT WITH PEAK CURRENT LIMITER FOR EMI FILTER - Light e power circuits and EMI filters therefor are presented in which a depletion mode field effect transistor is connected in series with an EMI filter capacitor following an input rectifier to allow filtering of EMI and to limit capacitive currents during triac switching when powered through a phase-cutting dimmer circuit. | 09-20-2012 |
20120235598 | Method for Controlling the Operation of an Electronic Converter, and a Corresponding Electronic Converter, Lighting System and Software Product - A method for controlling the operation of an electronic converter ( | 09-20-2012 |
20120242248 | LIGHTING CONTROL DEVICE AND LIGHTING CONTROL MODULE - The invention discloses a lighting control module, suitable for controlling a lighting device. The plate of the lighting control module is detachably assembled with the lighting control device. In the lighting control device, a microprocessor commands a power phase control circuit to control the lighting device according to a touch signal sensed by a touch sensing module and controls an indicating light module according the brightness of the lighting device. | 09-27-2012 |
20120242249 | Controller and LED driving circuit with protection function - A controller with protection function, for controlling a transistor having a control terminal, a first terminal coupled to a load, a second terminal, is disclosed. The controller comprises a judgment unit and a current control unit. The judgment unit is coupled to the transistor and generates a current reducing signal when a potential of the first terminal of the transistor or a voltage difference between the first terminal and the second terminal of the transistor is higher than a preset value. The current control unit is coupled to the control terminal of the transistor for substantially stabilizing the current flowing through the transistor at a preset current value, and reduces the current flowing from the preset current value when receiving the current reducing signal. | 09-27-2012 |
20120242250 | DYNAMIC AMBIENCE LIGHTING SYSTEM - The invention relates to an ambience lighting system, typically for use in conjunction with a display device. The ambience lighting system may be of the type AmbiLight. The ambience lighting system comprises one or more light sources associated to subregions of the display screen; a content characterizer for determining content characteristics of image data of the subregions; and a controller controlling the color of the emitted ambience light of the one or more light sources in accordance with determined content characteristics of the subregions of the display screen. The subregions are configured to move from a prior position to a next position and the content characterizer and the controller are adapted for controlling the color of the emitted ambience light in accordance with the determined content characteristics of the image data of subregions of the next position. A dynamic ambience lighting is thereby obtained. | 09-27-2012 |
20120242251 | AMBIENCE LIGHTING SYSTEM USING GLOBAL CONTENT CHARACTERISTICS - The invention relates to an ambience lighting system, typically for use in conjunction with a display device. The ambience lighting system may be of the type AmbiLight. The ambience lighting system comprises one or more light sources associated to subregions of the display screen; a content characterizer for determining content characteristics of image data of the sub-regions; and a controller to control the color of the emitted ambience light in accordance with determined content characteristics. The content characterizer is further adapted to determine content characteristics of a global region of the display screen, and the controller is adapted to control the color of the emitted ambience light in accordance with the determined content characteristics of the subregions and of the global region. | 09-27-2012 |
20120256560 | LIGHT EMITTING DEVICE MODULE AND SURFACE LIGHT SOURCE DEVICE - A light emitting device package includes a package body; a first light emitting device mounted on the package body and emitting light of a particular color; a second light emitting device mounted on the package body to be adjacent to the first light emitting device, adjusting an amount of light according to a current value applied thereto to thereby control a color temperature, and emitting orange light; and a resin part sealing the first and second light emitting devices and containing at least one or more types of phosphors. | 10-11-2012 |
20120262089 | Lighting fixture with replaceable light source - A LED illuminator includes positive and negative electrodes of different configurations and a LED lamp with a plurality of the LED illuminators. The LED lamp includes two or more elastic jacks, in each of which a positive electrode or a negative electrode is arranged. The elastic jack has a positive connection point and a negative connection point respectively corresponding to distal and proximal ends of the positive electrode or the negative electrode inserted therein so that the LED lamp is in electrical connection with a power supply unit. In addition, the LED illuminators may be in parallel connection. Accordingly, a slight touch of the LED illuminator allows the illuminator to be inserted into or removed from the respective elastic jack when replacing the LED illuminators of the lamp. | 10-18-2012 |
20120262090 | TWO-TERMINAL CURRENT CONTROLLER AND RELATED LED LIGHTING DEVICE - A two-terminal current controller regulates a first current flowing through a load, which is coupled in parallel with the two-terminal current controller, according to a voltage established across the two-terminal current controller. When the voltage established across the two-terminal current controller does not exceed a first voltage, the two-terminal current controller conducts a second current related to a rectified AC voltage, thereby limiting the first current to zero and regulating the second current according to the load voltage. When the voltage established across the two-terminal current controller is between the first voltage and a second voltage, the two-terminal current controller conducts the second current, thereby limiting the first current to zero and limiting the second current to a constant value larger than zero. When the voltage established across the two-terminal current controller is greater than second voltage, the two-terminal current controller is turned off. | 10-18-2012 |
20120268034 | ILLUMINATION SYSTEM AND ILLUMINATION APPARATUS - An illumination system includes a plurality of illumination apparatuses, each of the illumination apparatuses including a light source, a detection sensor for sensing presence and absence of a moving object, a wireless communication unit for transmitting a sensing signal of the detection sensor to other illumination apparatuses and for receiving a sensing signal from other illumination apparatuses and a control unit for controlling an output of the light source based on the sensing signal of the detection sensor or the sensing signal transmitted from other illumination apparatuses. If the detection sensor of one of the illumination apparatuses senses the moving object, at least one of remaining illumination apparatuses is controlled together by the sensing signal wirelessly transmitted from said one of the illumination apparatuses. | 10-25-2012 |
20120274235 | Power Converting Circuit and Converting Controller - A converting controller, adapted to control a converting circuit to convert an electric power from an input power source, is provided. The controller comprises a duty cycle control unit, a protection enabling control unit and a protection unit. The duty cycle control unit controls the converting circuit according to a feedback signal for converting the electric power from the input power. The protection enabling control unit outputs protection enabling signals according to time results of a timing circuit. The protection unit detects the converting circuit and generates a protection signal when any circuit error is determined, so as to stop the duty cycle control unit, wherein the protection unit has a plurality of protection functions and enables the protection functions with respect to the protection enabling signals, respectively. | 11-01-2012 |
20120274236 | HARBOR LIGHTING CONTROL APPARATUS - A harbor lighting control apparatus is provided, which includes a plurality of slaves to perform on control or off control, and dimming control with respect to a light emitting diode (LED) array light source mounted to a lighthouse when an on control signal or off control signal, and a dimming control signal are received, and to transmit a result of the control as acknowledge signals, and a master to transmit the on control signal or off control signal and the dimming control signal to all of the plurality of slaves by a broadcast scheme, to transmit the on control signal or off control signal and the dimming control signal to an individual slave by a unicast scheme, and to recognize operational states of the plurality of slaves by receiving the acknowledge signals from the plurality of slaves. Accordingly, stable and reliably control of the harbor lighting is enabled. | 11-01-2012 |
20120274237 | APPARATUS OR CIRCUIT FOR DRIVING A DC POWERED LIGHTING EQUIPMENT - An apparatus that can operate with electronic ballasts ( | 11-01-2012 |
20120274238 | Illumination Device and Fixture - Technologies are described herein for an illumination device and a corresponding fixture device. The illumination device includes a luminary module for the emission of light and an identification circuit containing identifying data, while the fixture device includes a driver module for supplying power to the illumination device and a controller module. When the illumination device is connected to the fixture device, the controller module communicates with the identification circuit of the illumination device to retrieve the identifying data and causes the driver module to supply the appropriate power to the luminary module of the illumination device. | 11-01-2012 |
20120280638 | Controllable Retrofit LED Lamps and Lighting System Having an LED Lamp - The invention relates to a retrofit LED lamp ( | 11-08-2012 |
20120299511 | Controlling the Light Output of One or More LEDs In Response to the Output of a Dimmer - An apparatus for controlling the brightness of one or more light emitting diodes includes a sensing circuit to sense a dimming level of a dimmer. A microprocessor receives from the sensing circuit a signal indicative of the dimming level, and a drive circuit drives the one or more light emitting diodes. The microprocessor is arranged to generate a PWM waveform or current level corresponding to the dimming level and to provide the PWM waveform or current level to the drive circuit. | 11-29-2012 |
20120306407 | Primary-Side Control Of A Switching Power Converter With Feed Forward Delay Compensation - An electronic system includes controller to control a switching power converter to provide power to a load. To control the amount of power provided to the load, in at least one embodiment, the controller senses a current value representing a current in the switching power converter and detects when the current value reaches a target peak value. However, due to delays in the controller and/or the switching power converter, the detected target peak value will not be the actual current peak value generated by the switching power converter. In at least one embodiment, the controller adjusts the detected target peak value with a post-detection delay compensation factor to generate a delay compensated current value that more accurately represents an actual peak current value associated with the current in the switching power converter. | 12-06-2012 |
20120313547 | AIRCRAFT LED LANDING OR TAXI LIGHTS WITH THERMAL MANAGEMENT - Low weight, low cost, low complexity systems and methods for performing large thermal transfer during worst-case conditions to ensure a light-emitting diode (LED) light. An exemplary device includes a housing with a sealed cavity, a circuit board having a first side attached to one side of the housing, a plurality of light sources attached to a second side of the circuit board and a material located within the sealed cavity. The material changes phase at a predefined temperature. The housing includes a plurality of protrusions that extend into the cavity. The housing and the protrusions transfer heat generated by the light sources into the material. The plurality of light sources include light-emitting diodes (LEDs). A plurality of optical elements direct light generated by the LEDs. The optical elements are attached to the circuit board. | 12-13-2012 |
20120319619 | CIRCUIT CAPABLE OF IMPROVING A SHIFT OF GAMMA CURVE RESULTING FROM LED TEMPERATURE RISE AND A DEVICE THEREOF - The present invention relates to an LCD technology. A circuit used for correcting a shift of the gamma curve because of light emitting diode (LED) temperature rise and a device thereof are proposed. The circuit includes at least one temperature sense resistor, an analog-to-digital converter (ADC), and a lookup table. One end of the temperature sense resistor is connected to the ADC which is connected to the lookup table. The present invention can improve image quality rapidly. The structure of the circuit proposed by the present invention is simple, making it easy to be performed, which is good for energy saving and environmental protection. | 12-20-2012 |
20120319620 | LED-BASED LIGHTING MODULE AND CONTROL METHOD - A light-emitting diode (LED) module includes a body assembly, a printed circuit board assembly (PCBA) having LEDs, and a power conditioning board having a controller. The PCBA and power conditioning board are encapsulated by the body assembly. The power conditioning board is driverless, i.e., characterized by an absence of a switching power supply, and includes a rectifier and reducer. The reducer detects an AC waveform zero-crossing and phase angle of AC line power, reduces the rectified voltage, and selectively turns the LEDs on or off using corresponding signals. The controller receives the reduced peak-to-peak rectified voltage from the reducer, adjusts operating parameters of the reducer in response to the phase angle and zero-crossing to illuminate or extinguish some/all of the LEDs and increase the power factor of the LED module, and adjusts the limiter to provide a constant power level to the LEDs. | 12-20-2012 |
20120326629 | SYSTEMS AND METHODS FOR INTELLIGENT CONTROL OF COLD-CATHODE FLUORESCENT LAMPS - System and method for driving one or more cold-cathode fluorescent lamps. For example, the method includes generating at least one drive signal associated with a signal frequency, the signal frequency being equal to a first predetermined frequency, receiving a current-sensing signal, the current-sensing signal being associated with a lamp current for the one or more cold-cathode fluorescent lamps in response to at least the first predetermined frequency, and determining whether the current-sensing signal is larger than a first threshold in magnitude, the current-sensing signal being related to the first predetermined frequency. Additionally, the method includes, if the current-sensing signal related to the first predetermined frequency is determined to be larger than the first threshold in magnitude at anytime during a first period of time, changing the signal frequency from the first predetermined frequency to a second predetermined frequency, the second predetermined frequency being different from the first predetermined frequency. | 12-27-2012 |
20120326630 | DRIVER CIRCUIT - A light-emitting diode (LED) driver circuit configured to generate a constant driving voltage irrespective of a variation in a load current. The LED driver circuit, which may generate an LED driving voltage, may include a booster configured to generate the LED driving voltage in response to a control signal, a voltage detector configured to divide an output voltage of the booster and output a detection voltage, and a booster controller configured to generate the control signal. The booster controller may select one of a pulse-width modulation signal and a fixed logic-level signal as the control signal in response to an LED current signal and the detection voltage and output a selected signal. | 12-27-2012 |
20120326631 | LIGHTING DEVICE AND ILLUMINATION APPARATUS INCLUDING SAME - A lighting device includes lighting control units respectively provided for controlling lighting of solid state light emitting element groups irradiating light of different chromaticities and a color ratio setting unit for setting a target output ratio of the solid state light emitting element groups. In an xy chromaticity diagram of an XYZ color system, a straight line connecting chromaticity coordinates of lights irradiated by a first and a second solid state light emitting element group intersects a black body locus. Further, the lighting control units include a first and a second lighting control unit for controlling lighting of the first and the second solid state light emitting element group, and the first and the second control unit perform a feedback control such that an output ratio of the second to the first solid state light emitting element group becomes equal to the target output ratio thereof. | 12-27-2012 |
20130002167 | VARIABLE CORRELATED COLOR TEMPERATURE LUMINARY CONSTRUCTS - A lighting device comprising plural excitation sources configured to provide at least two excitation peak emissions of different wavelength and at least one phosphor material radiationally coupled to the plural light source, the lighting device having a plurality of operational states comprising a first operation state wherein excitation of the at least one phosphor material by a first peak emission from the plural excitation sources provides a first correlated color temperature (CCT) value, and at least one additional operational state wherein excitation of the at least one phosphor material by a second peak emission from the plural excitation sources provides at least one additional CCT value different from the first CCT value. Methods of varying the CCT value using the lighting device with controlled power distribution to the plural excitation sources. | 01-03-2013 |
20130009568 | HYBRID MULTI-OUTPUT POWER SUPPLY AND REGULATION METHOD THEREOF - The present invention relates to a hybrid multi-output power supply and regulation method thereof. In one embodiment, a power supply includes: a driving circuit that generates an error signal based on an expected driving voltage, the expected driving voltage being determined by an LED load driving current, and where the driving circuit regulates the driving current to be substantially constant and consistent with an expected driving current; a first stage voltage regulator receiving an input voltage and the error signal, and generating a first regulation voltage consistent with the expected driving voltage, where the first regulation voltage supplies power to the driving circuit, and provides driving voltage for the LED load, and where the first regulation voltage provides sufficient expected driving current; and a second stage voltage regulator that receives the first regulation voltage, and generates a substantially constant second regulation voltage to supply power to a first load. | 01-10-2013 |
20130009569 | Method of controlling an outdoor lighting system, a computer program product, a controlling device and an outdoor lighting system | 01-10-2013 |
20130015782 | Battery Powered Decorative Light with TimerAANM Weiser; MargaretAACI ChatsworthAAST CAAACO USAAGP Weiser; Margaret Chatsworth CA US - A decorative light in the form of a candelabrum, chandelier, or sphere, the candelabrum and chandelier having a plurality of artificial flower blossoms, each with an LED. A control circuit is electronically connected to each LED and has electronic circuitry to cause each LED to illuminate at a preselected time each day, remain illuminated for a predetermined interval, and then extinguish. | 01-17-2013 |
20130015783 | METHOD AND SYSTEM FOR ELECTRIC-POWER DISTRIBUTION - The current application is directed to control of lighting systems at individual-light-fixture, local, regional, and larger-geographical-area levels that also distribute electrical power to consumers. One implementation comprises a hierarchical lighting-control system including an automated network-control center that may control up to many millions of individual lighting fixtures and lighting elements, regional routers interconnected to the network-control center or network-control centers by public communications networks, each of which controls hundreds to thousands of individual light fixtures, and light-management units, interconnected to regional routers by radio-frequency communications and/or power-line communications, each of which controls components within a lighting fixture, including lighting elements, LED-luminaire drivers, sensors, and other devices. | 01-17-2013 |
20130015784 | ILLUMINATION LIGHT COMMUNICATION DEVICE, AND ILLUMINATION APPARATUS AND SYSTEM INCLUDING SAMEAANM KAMADA; MasaoAACI OsakaAACO JPAAGP KAMADA; Masao Osaka JPAANM SHIOHAMA; EijiAACI OsakaAACO JPAAGP SHIOHAMA; Eiji Osaka JPAANM NISHINO; HiroyukiAACI OsakaAACO JPAAGP NISHINO; Hiroyuki Osaka JPAANM MAEHARA; MinoruAACI OsakaAACO JPAAGP MAEHARA; Minoru Osaka JPAANM HASITANI; YosiakiAACI OsakaAACO JPAAGP HASITANI; Yosiaki Osaka JPAANM KONDO; YosukeAACI OsakaAACO JPAAGP KONDO; Yosuke Osaka JP - An illumination light communication device includes a light source unit including light emitting elements; a power supply unit controlling a load current flowing through the light source unit to be maintained at a constant; a switch element connected in series to the light source unit; and a control unit configured to control on/off of the switch element to modulate a light intensity of illumination light from the light source unit such that a binary communication signal is superimposed on the illumination light. The control unit has a switching circuit to open/close a path between the light source unit and the power supply unit, controls on/off of the switching circuit based on a dimming signal to perform a dimming control on the light source unit by a PWM control, and allows the communication signal to be superimposed on the illumination light in synchronization with an ON time of the switching circuit. | 01-17-2013 |
20130015785 | ILLUMINATION LIGHT COMMUNICATION DEVICE, AND ILLUMINATION APPARATUS AND SYSTEM INCLUDING SAMEAANM KAMADA; MasaoAACI OsakaAACO JPAAGP KAMADA; Masao Osaka JPAANM SHIOHAMA; EijiAACI OsakaAACO JPAAGP SHIOHAMA; Eiji Osaka JPAANM NISHINO; HiroyukiAACI OsakaAACO JPAAGP NISHINO; Hiroyuki Osaka JPAANM MAEHARA; MinoruAACI OsakaAACO JPAAGP MAEHARA; Minoru Osaka JPAANM HASITANI; YosiakiAACI OsakaAACO JPAAGP HASITANI; Yosiaki Osaka JPAANM KONDO; YosukeAACI OsakaAACO JPAAGP KONDO; Yosuke Osaka JP - An illumination light communication device includes a power supply unit controlling a load current in a light source unit to be maintained constant based on a dimming signal; an impedance unit series connected to the light source unit; a switch element parallel connected to the impedance unit to connect/disconnect the impedance unit with the light source unit; and a control unit controlling on/off of the switch element to modulate a light intensity of the light source unit such that a binary communication signal is superimposed on illumination light therefrom. The control unit controls the impedance of the impedance unit such that a difference between magnitudes of the load currents respectively when the pulse of the communication signal is superimposed and is not superimposed is maintained constant regardless of a dimming rate of the dimming signal in a range of a dimming rate equal to or greater than a predetermined level. | 01-17-2013 |
20130020965 | POWER CONVERTER WITH COMPENSATION CIRCUIT FOR ADJUSTING OUTPUT CURRENT PROVIDED TO A CONSTANT LOAD - A power converter for constant loads includes an energy transfer element, a switch, a controller, and a compensation circuit. The energy transfer element is coupled to receive a rectified voltage having a blocked portion that corresponds to a phase angle. The controller is coupled to control switching of the switch to regulate an output current of the power converter in response to a plurality of signals. The plurality of signals includes a peak input voltage signal and a feedback signal. The compensation circuit is coupled to output a compensation signal to adjust at least one of the plurality of signals in response to the phase angle exceeding a phase angle threshold. The compensation circuit does not output the compensation signal and does not adjust the at least one of the plurality of signals when the phase angle is less than the phase angle threshold. | 01-24-2013 |
20130026949 | LIGHTING DEVICE AND ILLUMINATION APPARATUS USING SAME - An LED lighting device includes: a power source unit for supplying the DC output voltage to a light-emitting diode; a control unit for adjusting the DC output voltage; and a control power source unit for supplying a control power to the control unit. The control power source unit generates the control power with the DC output voltage and has: a current-limiting resistor for limiting an electric current that flows from the power source unit to the control unit; a constant voltage unit for converting a voltage to be applied to the control unit through the current-limiting resistor unit to a constant voltage; and a switching unit for switching a resistance value of the current-limiting resistor unit among a plurality of resistance values. | 01-31-2013 |
20130026950 | DRIVER SYSTEM FOR DRIVING A PLURALITY OF LED'S - A driver system for driving a plurality of LED includes a control module having an input for receiving operating data, and at least one driver module for driving at least one of the LED. The driver module includes a hysteretical converter for generating a current to power the LED, and a controller electrically connected to the hysteretical converter for controlling the hysteretical converter. | 01-31-2013 |
20130033196 | LIGHT EMITTING ELEMENT DRIVE APPARATUS AND PORTABLE APPARATUS USING SAME - A light emitting element drive apparatus capable of outputting the lowest voltage satisfying drive conditions and having high light emitting efficiency and low power loss, and a portable apparatus using the same, comprising an LED drive apparatus to which LEDs of different drive voltages required for emitting light are connected in parallel and driving one or more LEDs, wherein the LED drive apparatus | 02-07-2013 |
20130038242 | BIAS VOLTAGE GENERATION USING A LOAD IN SERIES WITH A SWITCH - A power supply includes a load connected in series with a switch. The power supply uses the load in series with the switch to maintain a substantially constant voltage. The voltage may be used as a voltage bias and supplied to a controller module that is used to control switching of the switch. The load is operable to maintain a substantially constant voltage at an input terminal of the load and also to function as a current sink. The load may also perform an additional function, such as provide auxiliary lighting or operate as a cooling mechanism for the power supply and/or a lighting system that includes the power supply. | 02-14-2013 |
20130038243 | CURRENT-CONTROLLED STAGES, CONSTANT CURRENT CONTROL SYSTEMS, AND CURRENT CONTROL METHODS FOR DRIVING LEDS - Disclosure has current-controlling stages, backlight systems and control methods for driving LEDs. A disclosed current-controlling stage has a current controller and a feedback apparatus. The current controller is coupled to a light-emitting device, for making the driving current through the light-emitting device substantially a predetermined value. The current controller has a control node, at which a control voltage substantially controls the driving current. The feedback apparatus influences a compensation voltage based on the control voltage to keep the control voltage substantially around a first predetermined value. The compensation voltage substantially determines an output power of a voltage-controlling stage. | 02-14-2013 |
20130038244 | LIGHTING DEVICE - The disclosed lighting device gradually adjusts from an incandescent bulb color having a 30% dimming rate to a daylight color having a 100% dimming rate. The overall dimming rate is changed to a linear shape, and the ratio of the dimming rates of the incandescent bulb color and the daylight color is adjusted. When changing from the incandescent bulb color to the daylight color, the color is changed to an intermediate color that mixes the incandescent bulb color and the daylight color, and then ultimately is changed to the daylight color, and so it is possible to change the dimming rate without causing discomfort or annoyance in humans, and a comfortable and natural light environment is achieved. | 02-14-2013 |
20130043808 | MULTI-CHANNEL LED DRIVER CIRCUIT - Provided is a multi-channel LED driver circuit, including a power supply device for providing an independent voltage source; a plurality of regulating circuits connected to the power supply device and the light light-emitting diode arrays for receiving a voltage from the voltage source and providing a plurality of output currents to the light-emitting diode arrays, and thereby generating a plurality of error signals | 02-21-2013 |
20130043809 | LIGHTING NODE SYSTEMS AND METHODS - A lighting node is described. One embodiment of the lighting node includes a lamp, a radio device, and a memory. The lamp is configured for generating illumination. The radio device is configured for radio communication. The radio device is configured to remotely receive a color profile from the controller. The lamp is also configured to generate illumination to substantially match the received color profile. The memory is configured to store a group identifier for the lighting node. | 02-21-2013 |
20130043810 | Modified Dimming LED Driver - A driver circuit produces variable current output for an LED lighting system providing improved dimming capability and greater power efficiency when responding to industry standard lighting dimmers, through the use of an input voltage monitoring circuit which variably controls the current output of a switching regulator. Output current modulation methods such as analog, PWM, Pulse Frequency Modulation, or other digital modulation, and combination or hybrid methods such as that disclosed in U.S. Pat. No. | 02-21-2013 |
20130049636 | Electronic Device for Controlling Lighting Effects Using an Audio File - An electronic device is provided, which comprises one or more light groupings, each light grouping including one or more light sources, and audio processing circuitry adapted for interpreting an audio file. The audio file includes one or more instrument definitions exclusively assigned to a corresponding one of the one or more light groupings. The audio file further includes one or more note definitions associated with at least one of the one or more instrument definitions exclusively assigned to the corresponding one of the one or more light groupings, where a value associated with each of the one or more note definitions controls the color displayed by the one or more light sources within the associated exclusively assigned light grouping. In some instances, one or more commands for the instrument definitions assigned to the corresponding one of the one or more light groupings can include commands for at least one of volume definitions, note velocity definitions and modulation definitions, wherein the light intensity of the color displayed by the one or more light sources is controlled in accordance with the at least one of the volume definitions, note velocity definitions and modulation definitions. In some instances, the note definitions can include relative start times and end times, which when associated with the instrument definitions assigned to each of the one or more lighting groups affects the start time and the end time of the illumination of the light sources within the corresponding light grouping. | 02-28-2013 |
20130057179 | Circuit and Method for Operating a Lighting Unit and a Luminaire Having a Circuit of this kind - A circuit for actuating a lighting unit comprising: ( | 03-07-2013 |
20130063046 | CONFIGURATION UNIT AND METHOD FOR CONFIGURING A PRESENCE DETECTION SENSOR - A configuration unit ( | 03-14-2013 |
20130069561 | COLOR MIXING OF ELECTRONIC LIGHT SOURCES WITH CORRELATION BETWEEN PHASE-CUT DIMMER ANGLE AND PREDETERMINED BLACK BODY RADIATION FUNCTION - A lighting system includes methods and systems to mix colors of light emitted from at least two LED emitters. In at least one embodiment, the lighting system includes a controller that responds to phase-cut angles of the dimming signal and correlates the phase-cut angles with a predetermined black body radiation function to dynamically adjust a color spectra of the mixed light in response to changes in phase cut angles of the phase-cut dimming level signal. In at least one embodiment, the controller utilizes the predetermined black body radiation function to dynamically adjust the color spectra of the mixed, emitted light in response to changes in phase cut angles of a phase-cut dimming level signal. In at least one embodiment, the predetermined black body radiation function specifies correlated color temperatures (CCTs) that model the CCTs of an actual non-LED based lamp, such as an incandescent lamp. | 03-21-2013 |
20130076261 | PROGRAMMABLE LIGHT-BOX - A light-box for illuminating a printed image includes a light source having a plurality of light-emitting sections, a plurality of contrast information, and a programmable light source controller. The plurality of contrast information is determined according to the contents of the printed image, with each piece of contrast information corresponding to one contrast generated by the plurality of light-emitting sections. Thus, the programmable light source controller drives the plurality of light-emitting sections according to the plurality of contrast information in order to generate luminance variations within different durations. | 03-28-2013 |
20130076262 | Lighting Device, Lighting Equipment, and Lighting Control System - According to an embodiment, a lighting device includes a first to fourth light sources, a control unit, and an operation unit. The first to fourth light sources have a different combination of a relatively high/low correlated color temperature and a relatively high/low general color rendering index from each other. The control unit controls at least two of a light flux, the correlated color temperature, and the general color rendering index of each of the light sources. The operation unit designates at least one of the correlated color temperature and the general color rendering index of each of the light sources, and executes spectral distribution with the designated correlated color temperature, or general color rendering index. | 03-28-2013 |
20130076263 | ORGANIC LIGHT EMITTING DIODE LIGHTING SYSTEMS - A lighting system includes a plurality of organic light emitting diode (OLED) devices. By selecting the plurality of OLED devices, or by selectively controlling the plurality of OLED devices, the color characteristics of the lighting system can be tuned. The lifetime of the lighting system can be improved. | 03-28-2013 |
20130076264 | DC CONVERTER AND METHOD FOR SELECTING A FREQUENCY OF SAME - In one embodiment, a DC converter has a frequency adjusting device with a frequency selection circuit, a frequency change-over switch ( | 03-28-2013 |
20130076265 | ANALOG LED CONTROLLER - The present invention provides a cost effective analog apparatus to enable the user to obtain a display of varied color frequencies using a variety of LED light sources, both in the visual and non-visual ranges, acting in synchronous response to electronic input sources. The present invention provides an analog LED controller that includes a power supply terminal, an input terminal, and a plurality of color LED control circuits. The plurality of color LED control circuits include a first color LED control circuit, one or more nth color LED control circuits and a Nth color LED control circuit, wherein 1N and N=a total number of the color LED control circuits. | 03-28-2013 |
20130082622 | METHOD FOR MIXING LIGHT OF LED CLUSTER - The method for mixing light of LED cluster is disclosed. Firstly, a plurality of LED cluster are provided, then the step is importing the related data, then the step for the continuous genetic algorithm and the merit function are respectively carried out, finally the step for exporting data is achieved. The applied field of the invention is able to comprise LED cluster, fluorescence light source array, and fluorescence lamp array, as well as the other light source field etc. | 04-04-2013 |
20130082623 | LIGHTING SYSTEM AND CONTROL METHOD THEREOF - A lighting system according to an embodiment includes a light source unit and a control circuit. The light source unit includes first, second, and third light sources. The control circuit controls an optical output of the light source unit with a predetermined color temperature by controlling the respective optical outputs of the first, second, and third light sources, and sets the optical output of the light source unit when any one of the first, second, and third light sources becomes the minimum optical output to the minimum optical output at the time of reducing the optical output of the light source unit in a state where the optical output of the light source unit maintains the predetermined color temperature. | 04-04-2013 |
20130082624 | LED DRIVER SYSTEMS AND METHODS - A light-emitting diode (LED) driver system includes a control circuit that provides a waveform for driving a power transistor to generate a regulated current through one or more LEDs, and an error amplifier that generates an output compensation signal based on a comparison of a desired regulated current and an actual regulated current through the one or more LEDs. The output compensation signal is used to set an output compensation voltage that sets the duty cycle of the waveform. The LED driver system further comprises a dimming control device configured during a dimming control mode to alternate between dimming-on time periods and dimming-off time periods, and a sample and hold switch having a first state for holding the output compensation voltage fixed during each dimming-off time period, and a second state for restoring the error amplifier to its previous dimming-on operating state upon returning to each subsequent dimming-on time period. | 04-04-2013 |
20130088167 | LIGHT EMITTING SYSTEM CAPABLE OF COLOR TEMPERATURE STABILIZATION - A light emitting system includes: first, second, and reference light emitting components having first, second, and reference forward voltages when driven under constant current, respectively; an instrumentation amplifier for generating a temperature detection voltage with a magnitude dependent on the reference forward voltage of the reference light emitting component; first and second compensation voltage modules each generating a respective one of first and second compensation voltages based at least on the temperature detection voltage; and first and second power control modules providing first and second driving currents through the first and second light emitting components according to the first and second compensation voltages and the first and second forward voltages, respectively. | 04-11-2013 |
20130088168 | COMMISSION OF DISTRIBUTED LIGHT FIXTURES OF A LIGHTING SYSTEM - Apparatuses, methods, apparatuses and systems for commissioning a light fixture are disclosed. One method includes receiving, by the light fixture, a message from a central controller, wherein reception of the message puts the light fixture into a known condition, establishing communication between the light fixture and a user, and communicating, by either the light fixture or the user, a location of the user at a time of the established communication, to the central controller, thereby allowing the central controller to record a location of the light fixture. | 04-11-2013 |
20130088169 | CONSTANT-CURRENT LED DRIVER CIRCUIT AND OUTPUT VOLTAGE ADJUSTABLE CIRCUIT AND METHOD THEREOF - A constant-current Light Emitting Diode (LED) driver circuit is provided, and the circuit includes: an output voltage adjustable circuit and at least one path of LED load, wherein the output voltage adjustable circuit comprises: a switch converting main circuit, an output characteristic parameter sampling circuit, and an output voltage controller. The output voltage controller is used to adjust the output voltage of the switch converting main circuit according to the variation relationship between the sampling signal output by the output characteristic parameter sampling circuit and the output voltage, determine the adjustive direction of the output voltage magnitude of the switch converting main circuit according to the change of the sampling signal, adjust the magnitude of the output voltage of the switch converting main circuit according to the preset step, and finally make the output voltage equal to the voltage of one path of LED load with the highest voltage or the difference between the output voltage and the voltage of one path of LED load voltage with the highest voltage within the predetermined range. The present solution implements reducing the connection complexity and power dissipation on the base of controlling the multi-path constant-current LED. | 04-11-2013 |
20130093356 | Flyback Driver for Use in a Flyback Power Converter and Related Method - According to one embodiment, a flyback power converter comprises a primary circuit including a flyback driver, and an isolated output circuit responsive to the primary circuit. The isolated output circuit is used to power a load. The flyback driver is configured to identify a load current in the isolated output circuit from an input power to the primary circuit, and to regulate the load current according to the input power. In one embodiment, the flyback driver is configured to sense an input voltage to the flyback power converter, to identify an average current value corresponding to a current through a converter switch in the primary circuit, and to multiply the average current value and the input voltage to determine the input power to the primary circuit. | 04-18-2013 |
20130093357 | COLLECTIVE LED INTELLIGENT ILLUMINATION CONTROL DEVICE WITH POWER MEASURING AND MESSAGING FUNCTIONS - A collective LED intelligent illumination control device includes a power converter for providing the necessary working power supply to a plurality of LED lamps, and a multipurpose controller for dimming control of each said LED lamp which includes a power measurement module for measuring the power consumed by each LED lamp and recording the measured data, a scene mode input interface in conjunction with at least one existing wall switch for group switching and multi-step dimming controls, and a built-in network card and a Zigbee communication interface for communication with a remote server for remote power and dimming controls and collection of power consumption data of each said LED lamp and for wireless communication with surrounding sensors and equipment for predetermined data collection and controls. | 04-18-2013 |
20130099698 | Lighting device - A light film apparatus having an illuminated graphics panel with at least two segments that can be individually powered. A controller manages a power which is delivered from a power supply to each of the segments, so that each of the segments is either powered on, powered off or powered to an intermediate level. With the independent control of power to the different segments, it is possible to create a three-dimensional appearance of a moving image from a generally two-dimensional panel arrangement. A housing can be mounted so that the graphics panel abuts or is closely mounted to a mounting surface. | 04-25-2013 |
20130106308 | DIMMING DEVICE | 05-02-2013 |
20130106309 | Method and apparatus for illuminating | 05-02-2013 |
20130113393 | ILLUMINATING DEVICE - An illuminating device includes a connecting portion supplied with power, a conversion circuit that converts power supplied from the connecting portion, a case having a tubular shape, a support body that divides the case in the radial direction, and a plurality of light emitting diodes provided on one surface of the support body. The illuminating device further includes a drive circuit that drives the light emitting diodes, a secondary battery provided on the other surface of the support body, a charge/discharge control circuit for the secondary battery, and a control section that lights the light emitting diodes by supplied power and charges the secondary battery. The control section permits lighting of the light emitting diodes by a discharge of the secondary battery in a state in which power supply is stopped. | 05-09-2013 |
20130113394 | LIGHTING SYSTEM AND LUMINAIRE - A lighting system for controlling a plurality of light sources includes at least a first and a second light source, the second light source having a color temperature and relative luminous efficiency higher than those of the first light source. Further, the system includes: a driving unit configured to turn on and off each of the light sources; and a control unit configured to transmit a control signal to the driving unit in response to an input signal. In addition, the control unit transmits the control signal to the driving unit, to perform at least one of a fade-in control in which the first light source is turned on prior to the second light source when turning on the light sources and a fade-out control in which the second light source is turned off or is dimmed, prior to the first light source when turning off the light sources. | 05-09-2013 |
20130134902 | ADAPTIVE LIGHTING SYSTEM - An adaptive lighting system having a detection unit by which one or more extrinsic variables, that is variables occurring outside the adaptive lighting system, can be detected and can be transmitted, preferably in the form of at least one electric signal, to an evaluation and control unit, to the evaluation and control unit by which a control signal can be generated from the transmitted extrinsic variable(s) and can be transmitted to one or more adaptive light source(s) and to the one or more adaptive light source(s) which is/are designed to vary one or more it its/their emission properties on the basis of the transmitted control signal. | 05-30-2013 |
20130134903 | LED LAMP WITH HALF WAVE DIMMING - An LED lamp assembly includes a power supply configured to receive an input power signal and provide a DC lamp current, a dimming controller coupled to the power supply and configured to adjust the DC lamp current, and an LED lamp coupled to the DC lamp current. The dimming controller is configured to determine if full brightness or dimmed brightness is required based at least in part on the input power signal. The DC lamp current is maintained at a first level when full brightness is required and at a second level when dimmed brightness is required. | 05-30-2013 |
20130134904 | DIMMING DRIVING SYSTEM AND DIMMING CONTROLLER - Disclosed are dimming driving system and a dimming controller. A disclosed dimming driving system has a transformer, a lighting device, and a dimming controller. The transformer has a primary winding and a secondary winding inductively-coupled to each other. The secondary winding is coupled to an output power line and secondary ground, both coupling to and powering the lighting device. The dimming controller is coupled to the secondary winding for controlling current flowing through the lighting device according to a voltage drop of the secondary winding. | 05-30-2013 |
20130134905 | COLOR MIXING SYSTEM WITH BUCK-BOOST AND FLYBACK TOPOLOGIES - A system includes a first solid-state lamp that generates a first illuminated output having a first color. A second solid-state lamp generates a second illuminated output having a second color. The second illuminated output is mixed with the first illuminated output to generate a third illuminated output having a third color. An inductor or a transformer includes a primary coil and a bias coil. A first circuit includes the primary coil and a first switch. The first circuit supplies power to the first solid-state lamp. A second circuit includes the bias coil and a second switch. The second circuit supplies power to the second solid-state lamp. A control module alters the third color including controlling (i) a state of the first switch to adjust current supplied to the first solid-state lamp, and (ii) a state of the second switch to adjust current supplied to the second solid-state lamp. | 05-30-2013 |
20130141015 | METHODS AND APPARATUS FOR COMMUNICATION OVER A THREE-PHASE POWER SYSTEM UTILZING A COMMUNICATION PROTOCOL - Methods and apparatus related to controlling an apparatus such as a lighting fixture utilizing a communication protocol transmitted over the power line that feeds the lighting fixture. For example, in some embodiments data is transmitted over a three-phase power system via switching of a transformer electrically coupled to the three-phase power system. Optionally, a single transformer may be utilized to transmit data to at least on apparatus coupled to a first phase line of a three-phase power system and to at least one apparatus coupled to a second phase line of the three-phase power system. | 06-06-2013 |
20130147392 | POWER PROCESSING APPARATUS AND METHOD OF RELEASING THE RESIDUAL POWER THEREOF - A power processing apparatus includes an input port, an output port, a power transforming module, and a power releasing module. The power transforming module is between the input port and the output port to transform power into predetermined voltage or current. The power transforming module has a capacitor unit connected to LEDs in parallel. The power releasing module has a switch unit to disconnect the resistor unit and the capacitor unit when the power transforming module receives the power, and to connect the resistor unit to the capacitor unit when the power transforming module does not receive the power. Therefore, it may release the residual power to make the LED off in a short time when one turns off the power. | 06-13-2013 |
20130154507 | CURRENT CONTROL FOR SIMO CONVERTERS - A system includes a single-inductor-multiple-out (SIMO) converter having storage circuitry in communication with a plurality of output channels, and a controller that controls and measures current flow through the SIMO converter. A signal generator may output switching signals to store current in the storage circuitry and discharge the stored current into the plurality of output channels. The discharged current may be measured and compared to a desired current draw through the output channels over a sample period. A compensator may determine whether to change one or more timing parameters used to control the flow of current through the SIMO converter. | 06-20-2013 |
20130154508 | SIMO CONVERTERS THAT GENERATE A LIGHT OUTPUT - A power converter includes a single magnetic element in communication with a plurality of output channels. Each output channel includes one or more light-emitting diodes (LEDs) that may output a desired light output. Desired amounts of current may be discharged from the single magnetic element through the LEDs to generate the desired light output. The current may be drawn through the LEDs by switching “on” and “off” switches connected to the LEDs. A controller in communication with the power converter may generate switching signals to turn “on” and “off” the switches to draw the desired amounts of current. The controller may measure the current and determine whether to adjust the switching signals if the measured current draw is not the desired current draw in order to generate the desired light output from the LEDs. | 06-20-2013 |
20130154509 | LIGHT SOURCE APPARATUS - A light source apparatus has a lighting time period measuring section measuring lighting time periods of respective LEDs, a junction temperature calculating section that calculates junction temperatures of the respective LEDs, a light intensity deterioration characteristic storing section storing light intensity deterioration characteristics based on the junction temperatures of the respective LEDs, a light source drive characteristic storing section storing characteristics of power that drives the respective LEDs and light intensities, a deteriorated light intensity calculating section calculating deteriorated light intensities based on the measured lighting time periods, the calculated junction temperatures, and the light intensity deterioration characteristics stored in the light intensity deterioration characteristic storing section, and a light source power control section controlling power that drives the light sources, based on the deteriorated light intensities calculated by the deteriorated light intensity calculating section, and the characteristics stored in the light source drive characteristic storing section. | 06-20-2013 |
20130154510 | CURRENT BALANCING CIRCUITS FOR LIGHT-EMITTING-DIODE-BASED ILLUMINATION SYSTEMS - A system including a first transistor, a second transistor, and a comparator. The first transistor is configured to supply a first current to a first load connected to a first terminal of the first transistor. The second transistor is configured to supply a second current to a second load connected to a first terminal of the second transistor, wherein the first current and the second current have a predetermined ratio. The comparator is configured to compare a voltage at the first terminal of the first transistor or a voltage at the first terminal of the second transistor to a reference voltage, and to adjust, based on the comparison, biasing of the first transistor and the second transistor to maintain the predetermined ratio between the first current and the second current. | 06-20-2013 |
20130154511 | Universal Lighting Source Controller with Integral Power Metering - A universal lighting source controller including integral power metering for use with substantially all light source types including fluorescent, incandescent, magnetic low voltage, electronic low voltage, light emitting diode (“LED”), high density discharge (“HID”), neon, and cold cathode. The lighting source controller includes a line voltage dimming circuit that can control the intensity of light sources in a lighting circuit and measures the actual amount of power consumed by the light sources. The line voltage dimming circuit includes a triac circuit for controlling this intensity and current and voltage detection circuits for measuring the power consumption. The lighting source controller can also include low voltage dimming circuits to provide a control signal to light sources having electronic or magnetic dimming ballasts to set the intensity of these light sources. | 06-20-2013 |
20130154512 | SMART POWER DEVICE - A power device may include channels coupled to conductors in lines, where each one of the channels is coupled to a different one of the lines than the other channels and where the channels deliver direct current power signals over the conductors to the load devices. Each one of the load devices may be powered by a different one of the direct current power signals. The power device may include a power communicator that communicates with the load devices over the conductors that propagate the direct current power signals. The power communicator may determine a target power level for the load devices based on the communication over the conductors. The load device may adjust an amount of power in the direct current power signals in order to match the target power level. | 06-20-2013 |
20130154513 | Method and Apparatus for Operating a Group of Lighting Fixture Nodes - Methods and apparatus for operating a group of lighting fixture nodes ( | 06-20-2013 |
20130162173 | LIGHT SOURCE CIRCUIT BOARDS - Methods for manufacturing a light source circuit board having one or more light emitting components that include providing at least one circuit component on a light source circuit board, wherein the at least one circuit component has an electrical circuit constant that specifies one or more performance parameters for the light source. The methods also include measuring the electrical circuit constant of the at least one circuit component. The methods also include identifying one or more performance parameters for the light source based on the measured electrical constant. | 06-27-2013 |
20130175947 | DIMMING PROTOCOL DETECTION FOR A LIGHT FIXTURE - In some examples, a dimming protocol detection technology includes methods and apparatuses. In other examples, the technology includes a dimmer configured to transmit a dimming input signal. The dimming input signal is in a dimming protocol. The technology further includes a light fixture. The light fixture includes a plurality of lights and a dimming protocol detection module configured to detect the dimming protocol received in the dimming input signal. The dimming protocol is detected from a plurality of dimming protocols. The light fixture further includes a light dimming control module configured to control the plurality of lights based on the detected dimming protocol. | 07-11-2013 |
20130175948 | METHOD OF CONTROLLING ILLUMINATION APPARATUS - A method of controlling an illumination apparatus includes a malfunction detecting step for detecting a malfunction of an organic electroluminescence element based on its electrical characteristic, a short-circuit malfunction restoration step for applying a short-circuit malfunction restoration pulse to an element that is determined to be a short-circuit malfunction, a short-circuit malfunction restoration determination step for determining whether the element that is determined to be the short-circuit malfunction is restored, a malfunctioning element determination step for storing into a storage, when an element that is determined to be the short-circuit malfunction is not restored, individual information including identification information on the element as a malfunctioning element, and a turn-on control step for controlling the turn-on state of a light-emitting surface based on a state of distribution of the malfunctioning organic electroluminescence elements. | 07-11-2013 |
20130181635 | LED Driver with Primary Side Sensing - The disclosed switching regulator, including a controller for a switching regulator, is adaptable to supplying, or controlling the supply of, regulated current to a load that is isolated from a source of input power by a flyback transformer, and includes: (a) detecting, after transistor SW | 07-18-2013 |
20130187567 | CAPACITIVE LOAD DRIVING APPARATUS AND METHOD THEREOF - A load driving apparatus and a method thereof are provided. The provided load driving apparatus includes a first rectification unit, a first conversion unit and a second conversion unit. The first rectification unit is configured to receive and rectify an AC voltage, so as to output a first DC voltage. The first conversion unit is coupled to the first rectification unit, and is configured to receive and convert the first DC voltage, so as to output a second DC voltage. The first conversion unit is further configured to adjust the second DC voltage according to a feedback signal relating to the second DC voltage. The second conversion unit is coupled to the first conversion unit, and is configured to receive and convert the second DC voltage, so as to output a third DC voltage with a constant current to drive a first capacitive load. | 07-25-2013 |
20130187568 | Dimming Method and System for LED Lamp Assemblies - The present document relates to a method and system for dimming low power illumination devices, such as LED (Light Emitting Diode) assemblies. A controller for a driver circuit of a light source is described. The driver circuit controls a plurality of illumination states of the light source using a power converter, which converts power from an input voltage waveform of a mains power supply into a drive signal for the light source. The controller comprises an event detection unit; a state register to store an indication of a current state of the illumination states; a state processor to determine a target state of the illumination states, based on the detected event and based on the current state; and an output control unit controls the power converter of the driver circuit to provide a drive signal for the target state. | 07-25-2013 |
20130193874 | POWER SUPPLY CIRCUIT AND METHOD FOR DRIVING THE SAME - A power supply circuit with high power efficiency is provided. Alternatively, a power supply circuit with high power efficiency that is suitable for driving a light-emitting device is provided. The power supply circuit can switch current control in which driving is controlled based on information on current flowing through a load and voltage control in which driving is controlled based on information on voltage applied to a load. In a period during which voltage control is performed, a current detector for detecting current flowing through the load is deactivated so that current does not flow through the current detector. | 08-01-2013 |
20130193875 | LIGHT SOURCE APPARATUS - A light source apparatus includes: a first light source unit; a second light source unit; and a light source control section that, divides a plurality of light sources in the first light source unit into a first light source group, light from which enters near an optical axis, and a second light source group surrounding the first light source group, and divides a plurality of light sources in the second light source unit into a third light source group, light from which enters near the optical axis, and a fourth light source group surrounding the third light source group, and performs control to decrease an output of the second light source group to be lower than an output of the first light source group and decrease an output of the fourth light source group to be lower than an output of the third light source group. | 08-01-2013 |
20130193876 | ADAPTIVE ENERGY PERFORMANCE MONITORING AND CONTROL SYSTEM - A controller is configured for and a corresponding method of adaptive monitoring and control of a lighting system are suited for adaptively establishing lighting parameters on a fixture by fixture basis. The controller includes a communication interface configured to communicate with a multiplicity of light fixtures, a memory for storing software routines and information associated with each of the light fixtures; and a processor coupled to the memory and the communication interface and configured to execute the software routines and selectively communicate with at least one of the multiplicity of light fixtures to adaptively establish lighting parameters for the at least one of the multiplicity of light fixtures. A method of facilitating the monitoring and control of the light fixture includes controlling a lamp circuit to provide one of a multiplicity of light levels; assessing performance parameters of the light fixture; and communicating with a central server. | 08-01-2013 |
20130200821 | MULTI-SCREEN DISPLAY APPARATUS AND LUMINANCE CONTROL METHOD - In the case where luminance of light to be irradiated onto a multi-screen is not homogenized over the entire multi-screen, each of an image display apparatus and image display apparatuses carries out a homogenizing process of light to be irradiated onto a multi-screen over the entire multi-screen. | 08-08-2013 |
20130207571 | SEMICONDUCTOR LIGHT EMITTING ELEMENT DRIVE DEVICE AND LIGHTING FIXTURE WITH THE SAME - A semiconductor light emitting element drive device includes: a converter circuit configured to supply a light source unit with a load current from a first-primary winding; and a current regulation circuit. The converter circuit further includes a second-secondary winding. The current regulation circuit includes a switching device (second switching device) connected in series with the second-secondary winding. In a dimming ratio of the light source unit is lower than a first ratio, the second switching device is controlled to ON and OFF so as to decrease the load current through the light source unit by a shunt of a part of the energy stored in the primary winding. | 08-15-2013 |
20130207572 | SOUND CONTROLLED LIGHT EMITTING DEVICE AND METHOD - A light pole is described, including an elongated member having a core and an outer shell, with light emitting elements positioned along the length of member between the core and outer shell, and a control module controlling color and intensity of light output from the light emitting elements to provide different or varying light output modes. The outer shell is partially transparent or translucent for transmission of at least some light emitted from the light emitting elements. | 08-15-2013 |
20130214699 | Dual-Mode Dimming of a Light - Various methods and apparatus for controlling brightness of a light emitting apparatus include controlling a brightness of a light emitting device based on a brightness value, receiving a message over a network, and detecting a modulation of a power input of the light emitting apparatus. The brightness value is changed based on both the message and the modulation. | 08-22-2013 |
20130214700 | LED CONTROL SYSTEM - One embodiment includes a light-emitting diode (LED) control system. The system includes an LED driver system configured to regulate a control voltage based on a substantially constant reference current and a feedback voltage at a feedback node. The system also includes a digital current source system comprising a plurality of unit current sources that are each coupled to an LED. The plurality of unit current sources can be selectively activated to each provide a given unit current through the LED and to each provide the feedback voltage as an interpolative feedback to the feedback node based on the unit current. The system further includes a current magnitude controller configured to selectively activate the plurality of unit current sources in response to a current magnitude signal. | 08-22-2013 |
20130221874 | GLO-BLADES SKATES - A plurality of pairs of skates, where each skate has a blade or inline wheels and has a light bar for illuminating a skating surface, are wireless and remotely controlled. A remote controller, which includes an input device, determines the desired illumination characteristics of the pairs of skates and transmits wireless signals indicative of the desired illumination characteristics. Light controllers responsive to the wireless signals cause the desired illumination from the light bars of the skates. | 08-29-2013 |
20130234618 | Single Input Power Wire - Multi Function Control - A multifunction control circuit is responsive to a condition of the input power to selectively activate alternative functionality. In one embodiment, a μC is configured to monitor the input voltage, looking for a gap in the input voltage of a pre-determined duration, which indicates to the μC that the second (or additional) function is desired. This embodiment of the control circuit includes a 5 volt regulator configured to ensure sufficient power to the μC during an interruption of input power intended to present a function change signal. Alternatively, the control circuit may be constructed to monitor a change in the polarity of the input power and change functionality in response to changes in the polarity of applied voltage. | 09-12-2013 |
20130234619 | ILLUMINATION SYSTEM COMPRISING A PLURALITY OF LEDS - An illumination system ( | 09-12-2013 |
20130241439 | Lighting Control System, Lighting Control Method, and Storage Medium - A lighting control system includes a plurality of lighting fixtures for ambient lighting, a plurality of lighting fixtures for task lighting, and a smart phone of a worker. The smart phone can execute an application program which controls a corresponding lighting fixture for ambient lighting, and starts up the application program when an ON state of a lighting fixture for task lighting is detected. | 09-19-2013 |
20130241440 | PHASE ANGLE MEASUREMENT OF A DIMMING CIRCUIT FOR A SWITCHING POWER SUPPLY - An example switched mode power supply includes a timer, a threshold adjust circuitry, a comparator, and a control circuitry. The timer times a duration between crossings of a phase-dimmed signal across a first threshold. The threshold adjust circuitry adjusts a second threshold representative of a desired output of the switched mode power supply, where the second threshold is adjusted responsive to the timed duration between crossings. The comparator compares a feedback signal with the second threshold and generates a comparison result. The control circuitry controls switching of a power switch responsive to the comparison result to regulate the output of the switched mode power supply. | 09-19-2013 |
20130249435 | Level Light - A lighting apparatus having a light source and a leveling mechanism capable of maintaining the light source in a desired orientation is described. The lighting apparatus may have a pivot mechanism about which the light source is capable of rotating such that the lighting apparatus maintains the desired orientation. In specific embodiments, the lighting apparatus comprises a directional light source, a pivot mechanism, a connector capable of connecting the pivot to another object, and a mechanism that allows the light source to rotate about the pivot to maintain a desired orientation. The lighting apparatus may be connected to an object, such as a piece of wheeled luggage, such that when the luggage is tilted the light source maintains an desired orientation such as a horizontal orientation. | 09-26-2013 |
20130249436 | Lighting Control System and Central Control Apparatus - A lighting control system includes a central control apparatus and plural luminaires. A light color of each of the plural luminaires can be changed and each of them is assigned to one of plural groups to which different light colors are assigned or is duplicately assigned to the plural groups. The central control apparatus includes a control part and an output part. The control part generates control signals for controlling the light colors of the plural luminaires and causes a light color of a luminaire overlapping with the plural groups or an adjacent luminaire to become an intermediate light color between the assigned light colors for the respective plural groups when the plural luminaires assigned to the plural groups are lit and controlled. The output part outputs the control signals generated by the control part to the plural luminaires. | 09-26-2013 |
20130257312 | SYSTEM FOR GENERATING NON-HOMOGENOUS BIOLOGICALLY-ADJUSTED LIGHT AND ASSOCIATED METHODS - A lighting system including a plurality of luminaires capable of generating polychromatic light having a dominant wavelength in the visible spectrum and arranged into an array and a computerized device electrically coupled to the plurality of luminaires so as to selectively operate each individual luminaire to produce source light varying with each other and with time. The computerized device operates the luminaire such that each luminaire emits a source light, the source lights combining to form a combined light having selected characteristics. Each of the plurality of luminaires may be operable to emit light having increased spectral opponency, thereby reducing melatonin suppression. The source lights, when perceived directly, recreate a lighting scenario having varying lighting characteristics. | 10-03-2013 |
20130257313 | LOAD CURRENT CONTROL CIRCUIT - A system and method for operating one or more light emitting devices is disclosed. In one example, the intensity of light provided by the one or more light emitting devices is adjusted responsive to current feedback from the one or more light emitting devices. | 10-03-2013 |
20130257314 | METHOD OF OPERATING AN LED LIGHTING SYSTEM - An LED-based lighting system is operated with a time-based process. The LEDs are first turned on by energizing the system at full power. After a predetermined time period, which is selected so that the junction temperature of the LEDs does not reach a critical temperature, the current supply is ramped down to a steady-state supply. The steady-state current is maintained as long as the light is turned on. When the light is turned on the next time and the LEDs have not cooled down all the way, as determined by the time that has expired since the LEDs were last lit, the full-power time period is shortened accordingly. | 10-03-2013 |
20130264966 | LIGHT-EMITTING DISPLAY STICK - There have been a variety of attempts to make light-emitting display sticks, used when directing traffic at night, cheering at various events, and the like, that not only simply emit light but take advantage of persistence of vision to display letters or patterns in space. However, depending on the manner in which and speed at which the stick is waved, said letters or patterns become distorted and unrecognizable. In light of this problem, the issue is to implement a light-emitting display stick that both is suited to cheering at events and can display easily recognizable letters in space regardless of the manner in which and speed at which the stick is waved. The light-emitting display stick in the present invention contains an internal waving-angle sensor and can display undistorted letters or patterns in space by having light-emitting elements emit light in accordance with waving-angle information indicating angles with respect to a base angle. Said light-emitting display stick can also switch to a mode in which all of the light-emitting elements emit light. Said light-emitting display stick is thus easier to use and more effective. | 10-10-2013 |
20130264967 | lighting device - In a lighting device ( | 10-10-2013 |
20130271030 | Road Lamp System - According to one embodiment, a road lamp system includes a light-emitting section configured to irradiate light and an image pickup section. A power supply section operates as a driving power supply for the light-emitting section and performs power line communication with an external management apparatus. A road-lamp control section receives a control signal from the management apparatus via the power supply section and controls the light-emitting section on the basis of the control signal. A camera control section receives the control signal and determines, on the basis of image information transmitted from the image pickup section, whether a control operation instructed by the received control signal is executed. | 10-17-2013 |
20130271031 | COLOR TEMPERATURE AND ILLUMINATION ADJUSTING SYSTEM, AND METHOD THEREOF - A temperature and illumination adjusting system, including: a temperature and illumination adjusting device, including a CPU, receiving a temperature value and an illumination value, and generating a first PWM value and a second PWM value according to a first formula and a second formula; and a communication unit, outputting the first PWM value and the second PWM value; and a lamp device, including a lamp communication unit, receiving the first PWM value and the second PWM value; a first light module; a second light module; a first PWM driving unit, driving the first light module with the first PWM value; a second PWM driving unit, driving the second light module with the second PWM value, wherein the outputs of the first light module and the second light module have different color temperature. | 10-17-2013 |
20130271032 | DEVICE AND SYSTEM FOR LOAD DRIVING - A device and system for load driving. The device includes: an electric energy supplying unit including at least two units with output voltage adjustable; a sampling unit, with the input thereof connected to either end of a load unit for sampling the current of that end and sending the sampled current to an output voltage controller; the output voltage controller, with the input thereof connected to the output of the sampling unit for outputting voltage control signal to each unit with output voltage adjustable, according to the sampled current, so as to control the difference between the output voltage of each unit with output voltage adjustable and the maximum load voltage in a load branch to be not greater than a preset difference threshold, with the difference threshold being greater than or equal to zero. The device and system for load driving can improve the reliability of the driving device and can reduce the complexity of the circuit. | 10-17-2013 |
20130271033 | ILLUMINATION APPARATUS - The invention provides an illumination apparatus and a method of generating light by the illumination apparatus. The illumination apparatus comprises a light generation unit, configured to generate light having a color temperature in the range of [a first color temperature, a second color temperature]; and a controller, configured to control the light generation unit to generate light having a color temperature changing from a third color temperature to a fourth color temperature over time, wherein the third and the fourth color temperatures are in the range of [the first color temperature, the second color temperature]. The illumination apparatus of the invention could generate light having a changing color temperature over time, for example a color temperature changing from a less preferred color temperature to a preferred color temperature. When the user reads under light having a color temperature changing from a less preferred color temperature to a preferred color temperature, the accommodation error of the eyes of the user can be reduced. | 10-17-2013 |
20130278175 | KEYBOARD BACKLIGHT DRIVER IC - One embodiment of a display backlight driver integrated circuit can be configured for operation in at least two different ways. A first method transfers data from an EEPROM to hardware registers prior to regular operation. A second method also transfers data from an EEPROM to registers. However, hardware registers can be overwritten with data accepted from a control bus, prior to regular operation. A keyboard driver IC can detect the presence or absence of a cable to an LED. If the cable is absent, the driver IC will not supply power for the LED. One embodiment of a keyboard and display backlight control system can be configured to allow substantially independent operation. | 10-24-2013 |
20130278176 | System And Method For A Coordinated Series-Organized Power and Control System - To control multiple electronic circuits organized in a series configuration, this document introduces a single-wire power and control system. Specifically, individually controlled electronic circuits are arranged in a series configuration that is driven by a control unit located at the head of the series. The head-end control unit provides both electrical power and control signals down a single wire to drive all of the electronic circuits in the series in a manner that allows each electronic circuit to periodically draw power from the single wire. Each electronic circuit in the series has been designed such that the electronic circuits coordinate power draws to reduce peak power demand. | 10-24-2013 |
20130285571 | LED Backlight drive circuit, LCD Device and Driving Method - The invention provides an LED backlight drive circuit, an LCD device and a driving method. The LED backlight drive circuit comprises a plurality of LED lightbars which are arranged in parallel connection, and a detection module; a comparison unit is arranged in said detection module, the comparison ends of the comparison unit are respectively coupled to the output ends of the LED lightbars, and the reference end thereof is coupled with an adjustable reference voltage module. In the invention, because the comparison unit is used, and the reference end of the comparison unit is coupled to an adjustable reference voltage module, different reference voltages are selected in accordance with different output end voltages of the LED lightbars of the LCD device. If the voltage difference between the output end voltage of the LED lightbar and the reference voltage is controlled within a reasonable range, the comparison accuracy can be effectively improved. The maximum voltage difference of the LED lightbar is fed back to the power source end of the drive circuit to regulate the output of the power source. | 10-31-2013 |
20130285572 | LED DRIVER CIRCUIT AND METHOD - A driver circuit for driving at least one LED includes a data input for receiving set point data at a first data rate and at a first bit resolution, an LED output for driving the at least one LED with LED driving values at a second data rate and at a second bit resolution, and a processing device arranged for determining from the set point data by interpolation at least part of the LED driving values. The second data rate is higher than the first data rate, the processing device being arranged to interpolate in time. | 10-31-2013 |
20130285573 | CONTROLLED AREA LIGHTING FOR USE IN MINING ENVIRONMENTS - Systems and methods for controlling lighting in a mining environment. One system includes at least one light emitting diode and a controller. The controller is configured to communicate with the at least one light emitting diode and change the light emitting diode from a first operating mode to a second operating mode. In the first operating mode, the at least one light emitting diode provides area lighting, and, in the second operating mode, the at least one light emitting diode conveys information to personnel located in the mining environment. The controller changes the light emitting diode from the first operating mode to the second operating mode based on status information received from at least one device included in the mining environment. | 10-31-2013 |
20130285574 | CONTROL OF NETWORK LIGHTING SYSTEMS - The invention relates to the control of networked lighting systems, particularly large scale networked lighting systems, and more specifically to an efficient transmission of messages to control luminaries of a networked lighting system. A basic idea of the invention is to provide an efficient and flexible multicast, particularly group cast message that addresses several or a group of luminaires, and that can control the addressed luminaries in an efficient way by compressing the distributed light settings using a function in order to reduce the communicational overhead. An embodiment of the invention relates to a method for controlling a networked lighting system comprising the steps of—selecting several controllable luminaries of the networked lighting system (S | 10-31-2013 |
20130293146 | ILLUMINATION DEVICE HAVING DETERRENT FUNCTION - The illumination device contains a number of lamps and deterrent modules. Each deterrent module contains a reception unit for receiving a wired or wireless signal, and is configured in a lamp. Each lamp has a lighting member electrically connected to the deterrent module. When the deterrent module are activated, based on their respective configured times and modes, the deterrent modules control the lighting members of the lamps to turn on or off or to adjust its brightness or to remain on or off for a period of time, so as to create an impression that there are people moving and living in the household. | 11-07-2013 |
20130293147 | ALGORITHM FOR COLOR CORRECTED ANALOG DIMMING IN MULTI-COLOR LED SYSTEM - A lighting system having at least three light sources receives an input relating to color coordinates of a target point representing a desired color characteristic for a combined output from the light sources. The system defines first-pass endpoints corresponding to color characteristics of the light sources when operated at respective maximum intensities. The system determines first-pass amounts of respective maximum intensity contributions from the light sources to achieve light of the target point. When dimming the light to an intensity proportion, the system determines first-pass driver settings from the first-pass amounts and the intensity proportion. The system defines second-pass endpoints corresponding to color characteristics of the light sources when operated at the determined first-pass driver settings. The system determines, from the second-pass endpoints, second-pass amounts of respective reduced intensity contributions from the light sources; and the system determines second-pass driver settings for the second-pass amounts. | 11-07-2013 |
20130293148 | Tunable Lighting Apparatus - A luminaire provides light having a distribution pattern with high center beam candle power and a gradual gradient across a wide area. The luminaire includes a light source having first and second sets of light emitting elements selected and positioned to achieve the desired light distribution pattern. The luminaire further includes an optic configured to refract light emitted from the light source to achieve the desired light distribution pattern. | 11-07-2013 |
20130293149 | Intelligent lighting device with multiple luminaires, in particular free-standing luminaires or desk-mounted luminaires and a method for operating a lighting device of this type - The invention relates to an intelligent lighting device with multiple luminaires, which are at least partially coupled to each other with a wireless communication device. For this purpose, the luminaires preferably have communication modules with transmitter/receiver devices, via which the luminaires can communicate with each other. It is thereby provided that in accordance with the current operating mode of one of the luminaires at least one of the other luminaires can adopt a different predefined operating mode. Said luminaire can, for example upon the switching on of a luminaire or when one of the luminaires detects a person by means of a sensor device in the area of the luminaire, go into a working level with a predefined light intensity and the other luminaires located in the vicinity of said one luminaire go into a background illumination, i.e. in an illumination with a lower illumination level (background level). | 11-07-2013 |
20130293150 | ADAPTIVE ANTI-GLARE LIGHT SYSTEM AND ASSOCIATED METHODS - An adaptive anti-glare light system including a sensor, a color selection engine, a controller, and a plurality of light sources each configured to emit a source light. The sensor transmits a source color signal designating a reflected light characterized by a detected color and a discomfort glare rating. The color selection engine determines a dominant wavelength of the detected color, and a combination of the light sources that the controller may operate to emit a combined wavelength that matches the dominant wavelength of the detected color. A method of adapting light as a countermeasure to glare comprises receiving the detected color, determining a subset of the plurality of light sources that may be combined to form an adapted light that matches the detected color, and operating the light sources with a white light to emit the adapted light at or above a threshold discomfort glare level. | 11-07-2013 |
20130293151 | DIMMABLE MULTICHANNEL DRIVER FOR SOLID STATE LIGHT SOURCES - Systems and methods for driving solid state light sources are provided. A first drive circuit is configured to generate a drive current to cause a first solid state light source load and a second solid state light source load to illuminate. A feedback and control circuit is configured to receive feedback from the first solid state light source load and to control the drive current through the first solid state light source load based on the feedback. A second drive circuit is configured to control the drive current through the second solid state light source load. A master controller is configured to provide a first input to the feedback and control circuit to control the drive current through the first solid state light source load and a second input to the second drive circuit to control the drive current through the second solid state light source load. | 11-07-2013 |
20130293152 | LIGHT SYSTEM AND METHOD - The present invention relates to a method ( | 11-07-2013 |
20130293153 | ASSRESS INITIALIZATION OF LIGHTING DEVICE UNITS - In a lighting device, a primary control unit ( | 11-07-2013 |
20130300315 | SWITCH CONTROLLER, POWER SUPPLY DEVICE COMPRISING THE SAME, AND DRIVING METHOD OF THE POWER SUPPLY DEVICE - The power supply device includes a power switch including one terminal to which an input voltage is transferred; an inductor including one terminal connected to another terminal of the power switch; a diode connected between a ground and a floating ground; a sensing resistor connected between the floating ground and the one terminal of the inductor. A switch controller compares a modulation sensing voltage depending on a sensing voltage generated from the sensing resistor with a high peak reference and a low peak reference when a LED string is connected between an inductor and the ground. The switch controller controls a switching operation of a power switch according to the comparison result. The high peak reference and the low peak reference are references for controlling an upper limit and a lower limit of an LED current flowing through the LED string, respectively. | 11-14-2013 |
20130314000 | Load Driving Device, and Lighting Apparatus and Liquid Crystal Display Device Using the Same - A load driving device disclosed in the specification includes a power supply circuit for supplying to a load an output voltage converted from an input voltage, a detection voltage generation circuit for generating a detection voltage which varies depending on a magnitude of a voltage drop which across the load, and a control circuit for controlling the power supply circuit so that it performs output feedback control of the output voltage, on the basis of the detection voltage. | 11-28-2013 |
20130314001 | Light-Emitting Device with Temperature Compensation - The present application provides a light-emitting device comprising a first light-emitting diode group; a second light-emitting diode group electrically connected to the first light-emitting diode group in parallel; and a temperature compensation. element electrically connected to the second light-emitting diode group in series; and a first switch device connected between the second light-emitting diode group and the temperature compensation element. | 11-28-2013 |
20130328502 | Coordinated Visual Presentation Using Audience Display Devices - There is provided a system and method for a coordinated visual presentation using audience display devices. The method comprises determining a plurality of variables, wherein each of the plurality of variables include at least one process for execution by a first audience display device, determining a macro command including at least one of the plurality of variables, and transmitting the macro command for storage by the first audience display device. The method may further comprise transmitting a first trigger signal, wherein the first trigger signal includes a countdown timer for the initiating the macro command, and transmitting a second trigger signal, wherein the second trigger signal includes a second countdown timer for initiating the macro command, and wherein the second countdown timer includes the first countdown timer modified to account for a time difference between the receiving the first trigger signal and the receiving the second trigger signal. | 12-12-2013 |
20130328503 | ILLUMINATION CONTROLLER AND ILLUMINATION SYSTEM INCLUDING SAME - An illumination controller controls a light source unit having multiple types of light sources that emit light of different colors. The controller including: a dial, which is rotatable, used to adjust a color temperature and an illuminance of light irradiated from the light source unit; a memory which stores one or more control curves in which the color temperature and the illuminance of light irradiated from the light source unit change in conjunction with each other; and an adjustment unit used to adjust one of the control curves stored in the memory. Thus, when the dial is rotated, the color temperature and the illuminance of light irradiated from the light source unit change according to values determined by the control curve which is adjusted by the adjustment unit. | 12-12-2013 |
20130334983 | LIGHTING SYSTEM - The lighting system includes a plurality of lighting apparatuses and a controller configured to control the lighting apparatuses. Upon receiving a random number generation instruction from the controller, the lighting apparatus generates a first random number and a second random number by using a random number generation unit, and counts synchronization signals sent from the controller. When acknowledging that the counted number of the synchronization signals is equal to the first random number, the lighting apparatus sends the second random number to the controller. The controller identifies the lighting apparatuses based on the second random numbers respectively received from the lighting apparatuses, and uniquely allocates mutually different addresses to the respective identified lighting apparatuses. | 12-19-2013 |
20130334984 | LED PAPI WITH CONDENSATION PROTECTION - In accordance with an example embodiment, there is disclosed herein a LED PAPI ( | 12-19-2013 |
20130342132 | Method Of Controlling An Illumination Device Having A Number Of Light Source Arrays - The present invention discloses an illumination device comprising:
| 12-26-2013 |
20140001978 | CALIBRATION APPARATUS AND METHOD THEREOF, MULTI-CHANNEL DRIVING CIRCUIT AND CURRENT BALANCING METHOD | 01-02-2014 |
20140009083 | APPARATUS AND METHOD FOR CONTROLLING FAULT IN LIGHTING NETWORK - Disclosed herein is an apparatus and method for controlling a fault in a lighting network The apparatus includes power selection units respectively provided in a plurality of lighting units connected to one another over a network, each power selection unit being configured to compare a reference voltage with an output voltage sensed from power supply signals input from power supply units respectively provided in a lighting unit, located ahead of a faulty lighting unit, and the faulty lighting unit if a fault occurs in the lighting unit, and to select supply power to be supplied to the faulty lighting unit. Lighting control units control driving of the faulty lighting unit using the selected supply power. | 01-09-2014 |
20140015442 | LIGHTING DEVICE - A lighting device is provided with an illumination unit including two or less LED light sources. The illumination unit uses the two or less LED light sources to emit light of a short wavelength band and light of a long wavelength band. An output varying unit functions to vary an output of at least the long wavelength band light. When the output varying unit receives a varying signal, the output varying unit functions to decrease the output of at least the long wavelength band light. | 01-16-2014 |
20140015443 | LIGHT EMITTING ELEMENT LIGHTING DEVICE AND LIGHTING FIXTURE USING SAME - The light emitting element lighting device in accordance with the present invention, includes: a light emitting unit including a light emitting element; and a power supply circuit configured to supply a supply voltage to the light emitting unit. The power supply circuit is configured to increase the supply voltage from a first voltage lower than a lighting start voltage of the light emitting element to a second voltage higher than the lighting start voltage to light up the light emitting unit. The power supply circuit is configured to, in a process of increasing the supply voltage from the first voltage to the second voltage, decrease a rate of increase in the supply voltage as the supply voltage gets closer to the second voltage. | 01-16-2014 |
20140015444 | LIGHTING DEVICE - A lighting device includes a first light source having a first S/P ratio, a second light source having a second S/P ratio that is higher than the first S/P ratio, and a controller configured to performing dimming control of light output from the first and second light sources. The controller performs the dimming control separately on the first and second light sources at least under a snow covered condition. | 01-16-2014 |
20140015445 | Device and method for adjusting electricity consumption of a plurality of lighting devices of a lighting system - The invention is based on the idea that control of power consumption in a system comprising power consuming devices like lighting devices, for example, can be performed by dividing the power consuming devices of the system into a plurality of groups and by taking into account power consumption or load shedding or restoration capability for each group. Further, the invention implements an auction mechanism for adjusting power consumption or load in the lighting system such that an effective, fast, user requirements considering and lighting device functions and characteristics considering adjusting is achieved. | 01-16-2014 |
20140021884 | HIGH AMBIENT TEMPERATURE LED LUMINAIRE WITH THERMAL COMPENSATION CIRCUITRY - The present disclosure provides a method for powering a light fixture to provide a constant light output. In one embodiment, the method includes providing a current to one or more light emitting diodes (LEDs), monitoring an external ambient temperature and increasing the current to the one or more LEDs as the external ambient temperature rises to maintain the constant light output. | 01-23-2014 |
20140028218 | STAND-ALONE SYNCHRONIZATION FOR A RUNWAY LIGHT - A method of providing synchronous control for a number of light-emitting diode (LED) units within a LED fixture is described herein. The method can include receiving an input signal. The method can also include sending, in response to receiving the input signal and for a period of time, a power-on delay signal to the LED units, wherein each LED unit includes a counter, a toggle, and a LED driver, where the power-on delay signal resets the counter, initializes the toggle, and disables the LED driver. The method can also include terminating, after the period of time, the power-on delay signal. A LED fixture and a LED unit within a fixture, having one or more components performing the aforementioned method, is also described herein. | 01-30-2014 |
20140028219 | REMOTE INTELLIGENT MONITORING SYSTEM AND LED STREET LAMP APPLIED THERETO - A remote intelligent monitoring system includes a server and a plurality of LED street lamps. Each of the plurality of LED street lamps includes a plurality of LED light sources connected in parallel, a detecting module and a sensing module. The detecting module detects the functioning of each LED light source, and the sensing module detects atmospheric information of the area where the LED street lamp is located. If the detected functioning is not consistent with specified electrical standards corresponding to the detected atmospheric information, either the server or the LED street lamp itself can adjust the electrical functioning of the LED light sources to accord with the specified standards. | 01-30-2014 |
20140035484 | DIMMING CONTROL METHOD AND APPARATUS FOR LED LIGHT SOURCE - A light emitting diode (LED) light source, LED driver circuitry and methods for controlling the brightness of an LED light source are presented. In some embodiments, an LED driver control circuit receives a dimming command signal to dim the LED light source, modulates a continuous direct current (DC) level to dim the LED light source, and determines that a predetermined threshold level has been reached. At this time, the process includes initiating a fixed pulse width generator (PWG) control signal having a fixed duty cycle, automatically adjusting the LED current amplitude to its nominal current level, and decreasing the current amplitude while the fixed PWG control signal is active to achieve commanded lower dimming of the LED light source. | 02-06-2014 |
20140035485 | SINGLE STAGE FORWARD-FLYBACK CONVERTER AND POWER SUPPLY APPARATUS - There is provided a single-stage forward-flyback converter capable of increasing power factor and power conversion efficiency while performing power factor correction and constant current control in a single-stage circuit. The converter includes: a power converting unit including a transformer having a primary winding receiving input power and a secondary winding magnetically coupled to the primary winding to receive power induced thereto, and converting the input power in a forward scheme and a flyback scheme; a balancing unit maintaining balance between a power level by the forward scheme of the power converting unit and a power level by the flyback scheme thereof; and a path providing unit clamping the power by the forward scheme of the power converting unit and the power by the flyback scheme thereof to provide a power transfer path, wherein the power converting unit selectively operates the forward scheme according to a voltage level of input power. | 02-06-2014 |
20140062337 | DECORATION LAMP FOR PRODUCING MATCHED SOUND AND ILLUMINATION EFFECTS - A decoration lamp with a speaker for correspondingly illuminating and speaking has a decoration body, multiple fixtures, multiple illumination units, a translucent cover, a speaker and a control device. The fixtures are mounted on the decoration body. The illumination units are mounted in the fixtures. The translucent cover is mounted on the decoration body to cover the illumination units. The control device sequentially activates the illumination units for changing the patterns and activates the speaker making voices for the patterns. The patterns and the voices change synchronously. | 03-06-2014 |
20140070726 | LED DRIVING APPARATUS AND OPERATING METHOD THEREOF - A LED driving apparatus includes an output stage, an input resistor, a plurality of voltage dividing resistors, and a control circuit. The output stage includes at least one LED. A first voltage dividing resistor, a second voltage dividing resistor, and a third voltage dividing resistor are coupled between a specific voltage and ground in series to divide the specific voltage. A LED current passing through the LED has a duty cycle changed with the specific voltage. The control circuit senses a first voltage signal, a second voltage signal, and a third voltage signal between the first voltage dividing resistor and the second voltage dividing resistor, between the second voltage dividing resistor and the third voltage dividing resistor, and the input resistor respectively, and adjusts a setting voltage signal according to the first voltage signal, the second voltage signal, and the third voltage signal. | 03-13-2014 |
20140084811 | Methods and Systems for Controlling LEDs - The present invention relates to an electronic device, the electronic device comprising at least one LED, a driving unit for applying a driving algorithm for driving the LED during normal operation, and a measurement unit for determining a forward voltage of the LED by imposing a test current to the LED, the measurement unit being programmed for determining test current characteristics taking into account said driving algorithm. | 03-27-2014 |
20140111113 | SIMPLIFIED CURRENT SENSE FOR BUCK LED DRIVER - A current sense and feedback circuit is provided for a non-isolated Buck power converter to maintain constant current load regulation. The Buck converter may have a high side power switch and may include an input port, a switcher unit including a switch and a controller, an inductor coupled to the output, and a freewheeling diode for circulating the inductor current when the switch is open. The simplified current sense and feedback circuit of the power converter may include a current sense resistor module coupled to the freewheeling diode to provide a sense signal to the controller. The controller may also be coupled to the output of the power converter to sense an over voltage condition. The simplified current sense and feedback circuit may provide output regulation while maintaining a low component count, small size, and low loss that makes the power converter suitable for use in compact design applications. | 04-24-2014 |
20140111114 | Color Mixing and Desaturation with Reduced Number of Converters - A system is disclosed to automatically establish proper biasing for light sources in a color mixed projection system having multiple light sources which are active at the same time. Responsive to a feedback signal, a single DC-DC converter generates the bias voltage for the light sources. Comparators compare a headroom signal for each light source to a reference value to generate comparator output signals. The comparator output signals are processed by a channel selector and a digital filter/DAC module. The channel selector controls a switch to selectively provide and combine a headroom signal with an output of the digital filter/DAC module to create the feedback signal. By monitoring each headroom value, the bias voltage is adjusted, based on the feedback signal, until every headroom signal reaches the reference value thereby achieving sufficient biasing for every active light source in the color mixed projection system. | 04-24-2014 |
20140125250 | ANTENNA SENSOR - An antenna sensor includes an antenna operable to receive and/or transmit radio frequency (RF) signals, and one or more sensors operably connected to the antenna and configured to monitor at least one condition and to output sensor signals. A single connection is provided for connection to an electronic device to transfer RF signals from the antenna and sensor signals from the one or more sensors to the electronic device. | 05-08-2014 |
20140132183 | Method for guiding a human to a reference location, and lighting system comprising a plurality of light sources for use in such method - The invention provides a method for intuitively guiding a human to a reference location, such as an emergency exit, with a lighting system comprising a plurality of light sources along a pathway to the reference location. The lights shine with an intensity dependent upon the distance to the reference location, in particular the intensity of the light increases with decreasing distance to the reference location. The location of the emergency can be determined through emergency sensors, so that the intensity of the light sources is then controlled to lead away from the danger to the nearest safe exit. | 05-15-2014 |
20140139138 | LIGHT EMITTING APPARATUS AND METHOD OF OPERATING THEREOF - A light emitting apparatus disclosed herein comprises a first control apparatus, a first light emitting device, a sense apparatus, a second control apparatus, a power source and a second light emitting device, wherein the second light emitting device is electrically connected to the power source which is not connected to the first light emitting device. The sense apparatus senses both temperature and current of the first light emitting device to generate a second driving signal. The second driving signal is then provided to control the second light emitting device to emit a light for compensating the CCT shift of the light emitted by the first light emitting device. | 05-22-2014 |
20140139139 | APPARATUS AND METHOD FOR DRIVING LED DISPLAY PANEL - The present disclosure provides devices, circuits, and methods for driving an LED display panel, so as to ensure the delivery of equal global charge at minimum gray scale. In one example, the circuit of the present disclosure includes a current source, a detection module, and a measurement module. The current source is configured to generate a current signal for the LEDs. The detection module is configured to detect a forward voltage of the LEDs in response to a low current applied to the LEDs. The detection module is further configured to hold the detected forward voltage. The measurement module is configured to measure a time period for an anode voltage of the LEDs to rise to the detected forward voltage in response to a display current applied to the LEDs. | 05-22-2014 |
20140139140 | Encapsulation of DALI Commands in Wireless Networks - An exemplary lighting control system and method to use the same in which the lighting system may incorporate wireless communications between a DALI controller and DALI controlled devices while maintaining adherence to DALI protocol. The system comprises a DALI protocol based controller (master) connected via a first two wire data bus (e.g. a twisted pair wire) to a controller-side wireless module. The controller-side wireless module communicates via a wireless communication protocol (e.g. Wi-Fi, Zigbee) to at least one device-side wireless module. Each device-side wireless module is connected to a DALI stream via a second two wire data bus to at least one DALI ballast (slave) which is connected to at least one lamp bank. Additional devices may be connected to the DALI stream. | 05-22-2014 |
20140145644 | LED LIGHT CONTROLLER SYSTEM AND METHOD - Embodiments of the disclosure provide a system for selecting a color show generated by LED landscape, pool, and/or spa lights. The system can include an overlay indicating the color shows available to select from. A selector adjacent to the overlay can be positioned to select one of the color shows. The system includes a microcontroller in communication with the selector and a triac circuit in communication with the microcontroller. The microcontroller controls the LED landscape, pool, and/or spa lights using the triac circuit in response to the position of the selector. | 05-29-2014 |
20140159612 | Method and Apparatus for Providing a Passive Color Control Scheme Using Blue and Red Emitters - A lighting device capable of generating warm or neutral white light using blue light-emitting diodes (“LEDs”), red LEDs, and/or luminescent material that responds to blue LED emission is disclosed. The lighting device includes multiple first solid-state light-emitting structures (“SLSs”), second SLSs, and balancing resistor element. The first SLS such as a string of blue LED dies connected in series is able to convert electrical energy to blue optical light, which is partially turned into longer wavelength emission by the luminescent material. The second SLS such as a red LED die is configured to convert electrical energy to red optical light, wherein the second SLSs are connected in series. While the first SLSs and second SLSs are coupled in parallel, the balancing resistor element provides load balance for current redistribution between the first and second SLSs in response to fluctuation of operating temperature. | 06-12-2014 |
20140159613 | METHOD AND SYSTEM OF AUTOMATICALLY ADJUSTING LIGHT INTENSITY OF A LIGHTING FIXTURE HAVING MULTIPLE EMITTERS - A system for automatically adjusting light intensity of a lighting fixture having multiple emitters, includes a power supply for supplying at least one current source to multiple emitters, at least one first emitter capable of emitting light of a first wavelength, at least one second emitter capable of emitting light of a second wavelength and a luminous intensity adjusting circuit for adjusting light intensity of the at least one first emitter. Particularly, the luminous intensity adjusting circuit stabilizes a first current distributed from a feeding current of the at least one current source and the multiple emitters collectively emit light at a predefined variable light-intensity. | 06-12-2014 |
20140167643 | METHOD FOR CONTROLLING A LIGHT EMITTING DEVICE IN A COOKTOP APPLIANCE - Systems and methods of variably controlling a driver signal to a light emitting device located proximate to a burner assembly of an appliance are provided. The driver signal can be adjusted based on a signal indicative of a temperature in a region proximate the light emitting device. The signal indicative of a temperature of the burner assembly temperature can be generated by a temperature senor or the signal can be based on an anticipated temperature profile of the burner assembly. The driver signal can be adjusted based on the signal indicative of the temperature of the burner assembly temperature using pulse width modulation. | 06-19-2014 |
20140167644 | METHOD FOR MIXING LIGHT OF LEDS AND LIGHTING DEVICE USING SAME - A method for mixing light of LEDs includes following steps: Firstly, a substrate with a red light LED, a green light LED and a blue light LED arranged thereon is provided. Secondly, a power source for supplying power to the red light LED, the green light LED and the blue light LED is provided. Thirdly, a temperature variation ΔT1 of the red light LED caused by the power source, a temperature variation ΔT2 of the green light LED caused by the power source, a temperature variation ΔT3 of the blue light LED caused by the power source are calculated. And finally, input currents applied to the red light LED, the green light LED and the blue light LED are adjusted according to the temperature variations ΔT1, ΔT2 and ΔT3. A lighting device using the method is also provided. | 06-19-2014 |
20140167645 | Lighting Apparatus and Lighting System - A lighting apparatus (L) includes: a light source section that includes two or more kinds of plural LEDs having different emission colors as light sources; a storage section that stores light color characteristic information that indicates the relation between a light color of an illumination light that is generable by the light source section and an output of each LED; a transmission section through which a light color control command for designating the light color of the illumination light is input; and a control section that converts the light color control command into output information of each LED on the basis of the light color characteristic information, and controls an output level of each LED on the basis of the output information. | 06-19-2014 |
20140167646 | POLYCHROMATIC SOLID-STATE LIGHT SOURCES FOR THE CONTROL OF COLOUR SATURATION OF ILLUMINATED SURFACES - Polychromatic light sources of white light are composed of at least two different coloured emitters, such as groups of light-emitting diodes (LEDs). Disclosed are the spectral power distributions and relative partial radiant fluxes of the coloured emitters that allow controlling the colour saturating ability of the generated light, namely, the ability to render colours with increased saturation and the ability to render colours with decreased saturation. Also disclosed is a method for dynamical tailoring the colour saturating ability of the generated light. | 06-19-2014 |
20140176009 | LED Lighting System - An LED lighting system is provided for connection to a variable power source providing input power, the LED lighting system having at least one power analyzing and processing circuitry connecting to the variable power source, and being configured to identify one or more characteristics of the input power, where the characteristics are selected from amplitude, frequency and pulse width of the input power, compare one or more of the characteristics of the input power to preset control criteria either in hardware or software or both to yield a comparison result, and then control the current control circuitry according to the comparison result. | 06-26-2014 |
20140176010 | COLOR CONTROL OF DYNAMIC LIGHTING - This invention relates to a method of adjusting the fixture color emitted by a first and a second lighting fixture to a target color, each lighting fixture comprising at least a first and a second light source emitting light having different source colors, and said fixture color is obtained as a combination of said source colors, and said fixture color can be varied by varying the intensity of each light source; where the adjusting of said fixture color to a target color is performed by varying the intensity of said light sources based on both a first color gamut and a second color gamut respectively described by said source colors from said first lighting fixture and said second lighting fixture. The invention further relates to a light adapter and light system for adjusting the fixture color emitted by a first and a second lighting fixture to a target color and to a computer-readable medium having stored therein instructions for causing a processing unit to execute said method. | 06-26-2014 |
20140176011 | Methods and Systems for Controlling Addressable Lighting Units - Systems and methods that provide improved control of addressable lighting fixtures. Individual lighting units have assigned schedules defining the power levels for the unit at various times of the day. Adjustments to a scheduled level for each unit may be made depending on predefined exceptions, ambient daylight, conservation commands, override instructions, and boost signals. Individual occupants of the building are associated with sets of individual lighting units. An override command received by the system and associated with a particular individual occupant is applied to the individual lighting units with which the individual occupant is associated. | 06-26-2014 |
20140176012 | CURRENT DETERMINATION APPARATUS - The invention relates to a current determination apparatus for determining an operational driving current for driving a light source of a group of light sources. A same color shift function defining a light color shift depending on a driving current can be provided for all light sources of the group. An operational driving current is determined based on the color shift function such that the light color ( | 06-26-2014 |
20140184097 | ECONOMICAL POWER AND DATA TRACK LIGHTING SYSTEM - A track lighting system incorporates an elongate track that includes a plurality of longitudinal guideways. Multiple light fixtures selected from a group consisting of LED, incandescent, quartz halogen, compact fluorescent (CFL), high intensity discharge (HID) and ultra-violet (UV) luminaires are supported on the track. Conductors are arranged in at least some of the longitudinal guideways including power conductors and data conductors electrically isolated from each other. Adaptors are connected to a source of power for applying electrical power to the power conductors and connected to a source of control data for applying data signals to the data conductors. At least one light fixture is a luminaire responsive to a 0-10 volt dimming control voltage and a data converter for converting data on the data lines to 0-10 volt dimming control signals for selectively dimming at least one light fixture. | 07-03-2014 |
20140184098 | AUTOMATIC INPUT IMPEDANCE CONTROL - The present disclosure is directed to an input impedance control circuit. In one embodiment, the automatic input impedance control circuit includes a circuit controller that comprises a module for calculating an impedance and a control logic module, wherein the control logic module provides a current enable signal and a current control output signal, a driver in communication with the circuit controller for receiving the current enable signal and the current control output signal, an input voltage sensing circuit in communication with the module for calculating the impedance and the control logic module and an input current sensing circuit in communication with the module for calculating the impedance. | 07-03-2014 |
20140184099 | Illumination Apparatus, Illumination System, and Illumination Apparatus Control Method - An illumination apparatus includes a determination unit that determines whether or not the supply of power from the system power supply is performed. In addition, the illumination apparatus includes a control unit that performs control such that power is supplied to the light source from the battery based on setting information of the light source when the determination unit determines that the supply of power from the system power supply is not performed. | 07-03-2014 |
20140184100 | Illumination Control Device and Illumination Control System - An illumination control system includes an illumination control device, and a plurality of illumination lamps that are connected to the illumination control device via a network and are controlled by a control signal from the illumination control device. In addition, the illumination control device includes a reception unit configured to receive route information specified by a user from a user terminal, a decision unit configured to decide a schedule in which an illumination lamp which is a control target and an illumination process executed in the illumination lamp are specified according to the route information, and a transmission unit configured to transmit a control signal according to the schedule to the illumination lamp which is a control target. | 07-03-2014 |
20140184101 | Controller for light-emitting devices - The present invention relates to a controller ( | 07-03-2014 |
20140197758 | POWER SUPPLY WITH INTERFACE AND EMBEDDED CONFIGURATION INFORMATION - A power supply system may include power supply circuitry configured to power an output load, and a processor configured to generate configuration information that configures a remote device with the capability to control the power supply circuitry. The processor may also be configured to transmit the configuration information with a network interface to the remote device in response to a triggering event associated with the remote device. In response to receipt of the configuration information, the remote device may be configured to generate a control interface. A user of the remote device may control the power supply circuitry through the control interface. | 07-17-2014 |
20140197759 | Lighting Control System and Method - A lighting system has first and second light sources operable to generate light having cool and warm white color temperatures, respectively. A color control provides a variable color control signal to adjust a perceived color output of the lighting system. Throughout a range of the color control signal, the controller is operable to smoothly vary the perceived color output of the lighting system between the cool white color and the warm white color. In second and thirds ranges of the color control signal, the perceived color output of the lighting system is the cool or warm white color, respectively. | 07-17-2014 |
20140203730 | LIGHT EMITTING DEVICE POWER SUPPLY CIRCUIT, LIGHT EMITTING DEVICE CONTROL CIRCUIT AND IDENTIFIABLE LIGHT EMITTING DEVICE CIRCUIT THEREFOR AND IDENTIFICATION METHOD THEREOF - The present invention discloses a light emitting device power supply circuit, a light emitting device control circuit and an identifiable light emitting device circuit therefor, and an identification method thereof. The light emitting device control circuit includes an operation signal generation circuit and an identification circuit. The operation signal generation circuit determines whether the light emitting device control circuit operates in an identified mode or amiss mode according to an enable signal. In the identified mode, the light emitting device control circuit operates a power stage circuit to supply an output current to an identifiable light emitting device circuit. In the miss mode, an output voltage is maintained at a predetermined level. The identification circuit determines whether the light emitting device control circuit switches from the miss mode to the identified mode according to whether the output voltage meets a condition. | 07-24-2014 |
20140203731 | SYSTEMS AND METHODS FOR PROVIDING POWER TO HIGH-INTENSITY-DISCHARGE LAMPS - System and method for igniting one or more high-intensity-discharge lamps. A system includes an ignition controller configured to generate one or more signal pulses for a pulse signal during a first predetermined time period and to cause one or more voltage pulses to be applied to the one or more high-intensity-discharge lamps, the pulse signal changing between a first logic level and a second logic level during the first predetermined time period, each of the one or more signal pulses corresponding to a pulse period, the pulse period being no larger than the first predetermined time period. The ignition controller is further configured to, if the one or more high-intensity-discharge lamps are not successfully ignited after the first predetermined time period, stop generating any signal pulse for the pulse signal for a second predetermined time period, the second predetermined time period being equal to or larger than the pulse period. | 07-24-2014 |
20140210374 | LIGHTING SYSTEM AND METHOD FOR PWM DUTY CYCLE CONTROL - A lighting system and method are provided for controlling a PWM duty cycle. The lighting system is provided with at least one device that is configured to emit light in response to receiving electrical power. The lighting system includes a power circuit and a feedback circuit. The power circuit is configured to selectively supply power to the device at a duty cycle corresponding to a first mode and a second mode, wherein the duty cycle of the first mode is less than 10% of the duty cycle of the second mode. The feedback circuit is configured to provide a feedback signal that is indicative of the energy provided to the device. The power circuit is further configured to disable power to the device during the first mode in response to the energy being greater than a threshold energy value, thereby adjusting the duty cycle. | 07-31-2014 |
20140210375 | Accelerometer-based Illumination System for Mobile Dispensing Devices - An illumination system for mobile dispensing devices is disclosed. An acceleration sensor detects the acceleration of the device and a microcontroller analyzes the acceleration to determine if motion and tilt are present. If motion is greater than a threshold value, then side lights turn on at maximum brightness. Once motion is equal to or less than the threshold level, the side lights will progressively dim over a configurable period until being turned off. If the tilt angle of the device is greater than a configurable value from its vertical position, the top lights turn on at maximum brightness. Once the tilt is below or equal to its configurable value, the top lights will progressively dim over a configurable period until being turned off. If either the motion or tilt angle become greater than the programmable value during the dimming process, the corresponding light will again be illuminated at maximum brightness. | 07-31-2014 |
20140232294 | LIGHTING CONTROL SYSTEMS - A lighting control system and apparatus that may be utilized with aquariums are provided. The light control system and apparatus may be utilized with various lighting fixtures. The lighting control system and apparatus provides easy control over different lighting fixtures comprising various lighting sources. In addition, a user may program various lighting characteristics and effects such as the turn on or turn off date and time, the color, the brightness, the power supplied to the lighting fixtures via different user interfaces by using different user systems. Further, multiple lighting control systems may operate seamlessly together. | 08-21-2014 |
20140232295 | LED DRIVING DEVICE - An LED driving device has a first constant current source circuit and a voltage control circuit. The first constant current source outputs a first constant current to a first node and the first constant current flows into a first LED module disposed between a driving node and the first node; wherein, the first constant current source circuit has a first detection node for generating a first detection signal in response to the voltage level of the first node. The voltage control circuit is coupled to the first detection node, for outputting a control signal in response to the first detection signal to a voltage regulator circuit in order to control and modulate the voltage regulator circuit to output a driving voltage to the driving node. | 08-21-2014 |
20140239846 | ORGANIC ELECTROLUMINESCENCE DEVICE - An organic EL device comprising: an organic EL element; a first transistor that controls a drive current of the organic EL element in accordance with a brightness adjustment voltage; and a temperature correction circuit that corrects the brightness adjustment voltage in accordance with a temperature; wherein the temperature correction circuit includes: a second transistor that has a same temperature characteristic as the first transistor; a resistor element that is connected to the second transistor; and an operational amplifier that controls the second transistor such that a predetermined reference voltage and a voltage across the resistor element become equal to each other; wherein the temperature correction circuit corrects the brightness adjustment voltage in accordance with an output from the operational amplifier. | 08-28-2014 |
20140239847 | LIGHT EMITTING DIODE ILLUMINATION APPARATUS AND CONTROL METHOD THEREOF - Disclosed are a light emitting diode illumination apparatus and a control method thereof. The light emitting diode illumination apparatus includes a a light source that includes a plurality of light emitting diode channels including one or more light emitting diodes, and emits light by application of a rectified voltage obtained by converting an AC voltage, and a control circuit that selectively provides current paths according to a change in a level of the rectified voltage through a plurality of switching circuits connected to the light emitting diode channels, and controls pulse widths of control pulses provided to the switching circuits such that an current supplied to the light source of each channel follows a waveform of the rectified voltage. | 08-28-2014 |
20140252987 | METHOD OF PRIORITIZING AND SYNCHRONIZING EFFECT FUNCTIONS IN AN ILLUMINATION DEVICE - The present invention relates to an illumination device comprising a number of light sources arranged in a first group and in a second and controlling means adapted to control the first group and said second group individually. The controlling means is further adapted to control of light sources based on an input signal indicative of at least a first effect function and a second effect function. The first effect function generates a first output related to the light sources and said second effect function generates a second output light sources. The first and second effect functions are stored in a memory in the in the illumination device. The that controlling means is adapted to control the first and the second group of light sources based on a priority schema and/or synchronizing schema both stored in a memory in the illumination device. The priority schema comprising a number of priority rules defining how the first effect function and the second effect must be executed in relation to each other, and the synchronizing schema comprises a number of synchronizing functions defining how the controlling means must execute the first effect function and the second effect function in relation to time and in relation to each other. The present invention relates also to a method of controlling such illumination device. | 09-11-2014 |
20140265921 | Solid State Lighting Apparatus and Methods of Forming - A light emitting device can include a solid state lighting source and a luminophoric medium for down-converting at least some of the radiation emitted by the solid state lighting source. The luminophoric medium may include a first material that down-converts the radiation emitted by the solid state lighting source to radiation having a first peak wavelength and that has a first decay time. The luminophoric medium may include a second material that down-converts the radiation emitted by the solid state lighting source to radiation having a second peak wavelength and that has a second decay time that is longer than the first decay time. | 09-18-2014 |
20140265922 | LIGHTING APPARATUS AND METHODS USING RECONFIGURABLE DIMMING MAPPING - A lighting apparatus includes at least one light emitting device and a reconfigurable driver circuit configured to drive the at least one light emitting device with an intensity that varies responsive to a dimming signal according to an adjustable mapping of the dimming signal to output of the light emitting device. In some embodiments, the mapping may be configurable using circuit component selection. In further embodiments, the mapping may be provided by a data input. | 09-18-2014 |
20140265923 | LED BULB WITH COLOR-SHIFT DIMMING - A light-emitting diode (LED) bulb comprises a base and a shell connected to the base. A first set of LEDs is disposed within the shell and is configured to emit light at a first color corresponding to a first black-body color temperature. A second set of LEDs is also disposed within the shell and is configured to emit light at a second color corresponding to a second black-body color temperature that is different from the first black-body color temperature. A control circuit is configured to provide a transitional-power state to the first and second sets of LEDs to transition between an initial-power state and a reduced-power state by producing a shifting color output that corresponds to a predetermined light-output curve. | 09-18-2014 |
20140265924 | Lighting System - A lighting system includes at least one lighting control console for controlling lighting devices, at least two redundant data networks, at least one conversion module, and at least one lighting device actuated by the DMX control data of the conversion module. The conversion module includes at least two redundant conversion devices. At least one switch-over device is interconnected between the two conversion devices on the one side and at least one lighting device actuated by the conversion devices on the other side. The two conversion devices on the one side and the switch-over device on the other side are connected to one another via at least one monitoring data line over which monitoring signals are transmitted. The switch-over device can be switched depending on the monitoring signals. | 09-18-2014 |
20140265925 | LED BACKLIGHT DRIVING CIRCUIT, LCD DEVICE, AND METHOD FOR DRIVING THE LED BACKLIGHT DRVING CIRCUIT - The present disclosure provides a light emitting diode (LED) backlight driving circuit, a liquid crystal display (LCD) device, and a method for driving the LED backlight driving circuit. The LED backlight driving circuit includes an odd number of LED lightbars and a constant current driver chip including an even number of channels. The channels include a work channel connected to the LED lightbar, and a dangling channel that is not connected to the LED lightbar. The dangling channel is connected to a reference signal, and a voltage of the reference signal is more than an internal comparison voltage of the constant current driver chip. | 09-18-2014 |
20140265926 | ILLUMINATION APPARATUS WITH GRADUALLY CHANGEABLE COLOR TEMPERATURES - The present invention provides an illumination apparatus with gradually changeable color temperatures; the apparatus includes an illumination module and a control module. The illumination module is utilized to generate an illuminating light which has a plurality of different color temperatures. The control module is utilized to control a color temperature variation of the illuminating light so that a color difference in Duv corresponding to the variation of the illuminating light is less than 0.006 under the color temperature variation. Moreover, all color rendering indices of the illuminating light corresponding to the different color temperatures are larger than 90, thereby completely simulating the variation of sun. | 09-18-2014 |
20140265927 | CONFIGURATION FREE AND DEVICE BEHAVIOR UNAWARE WIRELESS SWITCH - Apparatuses, methods and systems for controlling lighting, an environment factor, or security of a structure are discloses. A lighting control system includes a plurality of lighting devices, a central server and a switch. The central server communicates with each of the plurality of lighting devices, and controls an operating configuration of each of the lighting devices. The switch communicates with at least some of the plurality of lighting devices, wherein the communication includes information, and wherein the at least some of the plurality of lighting devices respond to the information based on the operating configuration of the at least some of the plurality of lighting devices. | 09-18-2014 |
20140265928 | SPECTRALLY-CONTROLLED BACKLIGHTING FOR LCD DISPLAYS - A display backlight assembly includes a light guide panel having first and second principal faces and at least one edge surface. A display screen is aligned with and substantially perpendicular to the first principal face of the light guide panel. The assembly also includes a light source with one or more white LEDs and one or more first color LEDs, where each first color LED emits a first color of light that is red, green, blue, or yellow. Each white LED and each first color LED is positioned to emit light into the light guide panel. A controller is electrically coupled to the light source and capable of independently setting an intensity value for each white LED and for each first color LED. The controller controls illumination of the LEDs independently as needed to provide backlighting with the selected intensity. | 09-18-2014 |
20140285113 | ILLUMINATION CONTROL SYSTEM - An illumination control system provides wireless data transmission with a lamp through a mobile communication device. The lamp has a built-in wireless communication module and a microcontroller. The microcontroller stores a location of the lamp with latitude-longitude values and height values. Accordingly, a user may use the mobile communication device to read the latitude-longitude values and height values of the lamps to achieve an indoor positioning function by calculating a positioning information of the user through indoor positioning algorithms, and thereby enable illumination control through the mobile communication device according to the positioning information. | 09-25-2014 |
20140292226 | CHAOTIC APPROACH TO CONTROL OF LIGHTING - At least one controllable source of visible light is configured to illuminate a space to be utilized by one or more occupants. A controller causes the source(s) to emit light in a manner that varies at least one characteristic of visible light emitted into the space over a period of time at least in part in accordance with a chaotic function. | 10-02-2014 |
20140300294 | SYSTEMS AND METHODS FOR PROVIDING AN OEM LEVEL NETWORKED SYSTEM - The present application is generally directed to systems and methods for control and management of lighting components connected in a network. A user specified rule is executed to control lighting effects in a lighting network which comprises an interface module in communication with one or more lighting control modules. The interface module may receive a rule for controlling a lighting network. The rule may comprise a user identified input and a user specified lighting effect to occur responsive to the user identified input. The interface module detects receipt of the user identified input and executes the rule to trigger the user specified lighting effect via the one or more lighting control modules. | 10-09-2014 |
20140327376 | METHOD AND APPARATUS FOR MEASURING INJECTION ENERGY OF ORGANIC LIGHT EMITTING DIODE DISPLAY - A method is used for measuring injection energy associated with an organic light emitting diode display device. The method includes disposing the display panel inside a chamber and controlling temperature inside the chamber. The method further includes determining a plurality of electric current values corresponding to a plurality of temperature values for each voltage value of plurality of voltage values, the plurality of voltage values being associated with voltages provided to the organic light emitting member. The method further includes calculating a plurality of injection energy values using the plurality of electric current values and the plurality of temperature values. | 11-06-2014 |
20140354179 | LUMINAIRE - A luminaire ( | 12-04-2014 |
20140361712 | SYSTEMS AND METHODS FOR PROVIDING COLOR MANAGEMENT CONTROL IN A LIGHTING PANEL - Provided are systems and methods for providing a stabilized color management system in a solid state lighting panel. Methods according to some embodiments include receiving, in the microcontroller, a color management reference value corresponding to a color characteristic of the solid state lighting panel and adjusting a control mode of the microcontroller responsive to the color management reference value. | 12-11-2014 |
20140368128 | ACTIVE CAPACITOR CIRCUIT - The present invention relates to an active capacitor circuit ( | 12-18-2014 |
20140368129 | LED LIGHTING DEVICE - This LED lighting device makes a maximum current to minimum current flowing in an LED a target proportion regardless of LED driving circuit performance and without erroneous operation. An LED lighting device ( | 12-18-2014 |
20150022117 | CURRENT BALANCING CIRCUITS FOR LIGHT-EMITTING-DIODE-BASED ILLUMINATION SYSTEMS - A system including a plurality of switches and a comparator. The plurality of switches is configured to respectively supply a plurality of currents via respective terminals to a plurality of sets of light emitting diodes. The sets of light emitting diodes are configured to respectively output light having wavelengths in a plurality of wavelength ranges in a spectrum of blue light. The comparator is configured to compare a reference voltage to a voltage at one of the terminals of one of the plurality of switches connected to one of the sets of light emitting diodes, and to adjust, based on the comparison, biasing of the plurality of switches to maintain a predetermined ratio of the plurality of currents. | 01-22-2015 |
20150028772 | LIGHT-EMITTING ELEMENT LIGHTING DEVICE, LIGHT-EMITTING MODULE, ILLUMINATING APPARATUS, AND LIGHT-EMITTING ELEMENT LIGHTING METHOD - A light-emitting element lighting device includes: a step-down chopper circuit which outputs a current that flows to a light-emitting element; a current command circuit which selects between a rated mode for passing a rated current for turning ON the light-emitting element and a detection mode for passing an abnormality detection current, which is smaller than the rated current, for detecting an abnormality in the light-emitting element; a voltage detection circuit which detects a voltage across both ends of the light-emitting element; and a control circuit which causes the step-down chopper circuit to stop outputting the current to the light-emitting element, when the voltage across both ends detected by the voltage detection circuit in the detection mode is lower than or equal to an abnormality detection threshold voltage which is set lower than the rated voltage at the time when the light-emitting element is turned ON. | 01-29-2015 |
20150028773 | LIGHT EMITTING MODULE THEREOF - The present invention discloses a light-emitting module using a special circuit design to solve the abnormal breakage of the battery lifetime and comprising a power supply module storing an electrical power; a first sub-circuit and a second sub-circuit, the first sub-circuit comprising a first light-emitting diode module, the second sub-circuit comprising a second light-emitting diode module and a passive component, wherein the passive component is connected with the second light-emitting diode module in series, the lighting color of the light-emitting diode module is different from the lighting color of the second light-emitting diode module; and a control module coupled to the power supply module, the first sub-circuit, and the second sub-circuit, for supplying the electrical power with the first sub-circuit and the second sub-circuit and driving the first light-emitting diode module and the second light-emitting diode module to emit light. | 01-29-2015 |
20150048759 | LIGHTING DEVICE - There is provided a lighting device including: a housing; and a plurality of light source modules detachably fixed to one surface of the housing, wherein the plurality of light source modules are divided radially on the basis of a central axis penetrating through a center of the housing and partial surfaces of the respective adjacent light source modules are combined to define an external shape of the lighting device. | 02-19-2015 |
20150048760 | 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. | 02-19-2015 |
20150054426 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND MEASURING METHOD OF TEMPERATURE USING THE SAME - An organic light emitting display device includes a substrate; a thin film transistor disposed on the substrate; and an organic light emitting component disposed on the substrate and electrically connected to the thin film transistor. The organic light emitting component includes: a first electrode; a second electrode; and an intermediate layer disposed between the first electrode and the second electrode. The organic light emitting display device further includes: a temperature sensing unit disposed on the substrate, the temperature sensing unit being configured to operate differently based on an ambient temperature of the organic light emitting display device; a power driver configured to provide power to the temperature sensing unit; and a voltage control unit configured to: determine a driving voltage of the temperature sensing unit based on the power provided to the temperature sensing unit; and determine the ambient temperature based on the driving voltage. | 02-26-2015 |
20150054427 | SYSTEMS AND METHODS OF CONTROLLING THE OUTPUT OF A LIGHT FIXTURE - Systems and methods of controlling the output of a light fixture. The light fixture includes a plurality of light sources and a controller. The controller is configured to receive a first input control value for a first control parameter and a first input control value for a second control parameter. The controller is also configured to determine a first difference between the first input control value for the first control parameter and a second input control value for the first control parameter stored in a memory and determine a second difference between the first input control value for the second control parameter and a second input control value for the second control parameter stored in the memory. The controller is also configured to set a slew time based on the first determined difference when the first determined difference is greater than the second determined difference and based on the second determined difference when the second determined difference is greater than the first determined difference. | 02-26-2015 |
20150069932 | DC LED DRIVERLESS LIGHTING ASSEMBLY - A lighting assembly to be primarily used in an agricultural setting to illuminate farm animals with different colors of lighting. The assembly has a circuit for emitting light with different colored light emitting diodes that are arranged in networks of LEDs. The second and third networks are arranged in parallel to a first network of LED forming three separate current paths for lighting the LEDs. Each path has controllable impedance element arranged in series with the network of LED in that particular path and is controlled by a dynamic impedance control element that is coupled to the controllable impedance element to direct current through the individual paths of the circuit. | 03-12-2015 |
20150077017 | Desktop reading, bedside reading, and midnight lamp and related methods - A bedside lamp, features for such a lamp, and associated methodology. The lamp has at least two different sets of lighting elements, each having one or more groupings of LED lamp(s), where the one or more main LED lamp(s) provide the majority of the lighting when the lamp is at full brightness and no lighting during various reduced lighting states, and the one or more “auxiliary” LED lamp(s) provide less than a majority of the lighting when the lamp is at full brightness and all of the lighting during various reduced lighting states. The lamp has the means for the user to set a dimming time for which the lights dim from a set brightness to 0% brightness, and means to gradually dim the main and auxiliary LED lamp(s) according to the above description. | 03-19-2015 |
20150077018 | CIRCUIT ARRANGEMENT AND METHOD FOR OPERATING AT LEAST ONE DISCHARGE LAMP - Various embodiments may relate to a circuit arrangement for operating at least one discharge lamp having a commutation device and a control device which is coupled to the commutation device. A first measuring device is used to determine in each case first measurement values, which represent a measure of the magnitude of electrode peaks of the discharge lamp, within a test operating phase in which the first electrode and the second electrode are supplied with energy in an asymmetrical manner. A second measuring device is used to determine a second measurement value which is correlated with the current through the discharge lamp at least during the test operating phase. The control device is designed to actuate the commutation device at least as a function of the determined first measurement values and second measurement values. Various embodiments further relate to a corresponding method for operating at least one discharge lamp. | 03-19-2015 |
20150077019 | APPARATUS AND METHOD FOR SCHEDULE BASED OPERATION OF A LUMINAIRE - An illumination system verifies controls the operation of a luminaire without the use of any photometric data. The illumination system uses data indicative of a current time, date or latitude to determine one or more aspects of a solar event. Such aspects can include a scheduled, predicted or expected time of occurrence of the scheduled solar event. Responsive to the determination of a scheduled, predicted or expected time of occurrence of the scheduled solar event, a control subsystem can adjust the luminous output of a light source. | 03-19-2015 |
20150084545 | Lighting Control System - A lighting control system includes a plurality of luminaires and a control device ( | 03-26-2015 |
20150091473 | METHOD AND APPARATUS FOR PROVIDING A NETWORK BASED SURROUND-LIGHT ENVIRONMENT - A method, apparatus, and user interface for providing a network based surround-light environment to dynamically drive lighting scenes are described. Location information of one or more illuminating elements relative to a display for presenting media information is determined. Lighting characteristic information for the one or more illuminating elements is determined. And a lighting profile for illuminating the one or more illuminating elements based on the location information and lighting characteristic information is determined. | 04-02-2015 |
20150091474 | APPARATUS AND METHOD FOR MONITORING LED COLOUR MIX - An LED assembly ( | 04-02-2015 |
20150102748 | LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device includes a backlight unit including an LED assembly, wherein the LED assembly includes: a plurality of LED packages; an LED PCB on which the plurality of LED packages are arranged being spaced apart from each other; and an LED driving circuit board that is connected to the LED PCB and includes a LED driving circuit, wherein the LED package includes first and second LED chips emitting two colors, respectively, out of red, green and blue, and a fluorescent substance emitting the other one color out of the red, green and blue, wherein a temperature sensor is formed in the LED PCB, and wherein the first or second LED chip is supplied with a compensated voltage according to temperature change by the temperature sensor. | 04-16-2015 |
20150108921 | TUNABLE LIGHTING SYSTEM - A method for providing a light output from a lighting system ( | 04-23-2015 |
20150123568 | LOAD DRIVE CIRCUIT, LOAD DRIVE METHOD, AND LUMINAIRE - A load drive circuit may include a DC power source configured to provide a DC output voltage for at least one load based on an output voltage of an AC/DC converter, the DC output voltage having a ripple, a variable resistance module connected to the load, a ripple reduction module that generates, based on a reference voltage and a feedback signal from the load, a variable resistance adjusting signal for adjusting the resistance of the variable resistance module so as to reduce a ripple of the load current, wherein the reference voltage is generated based on the DC output voltage, and a reference voltage adjusting module that adjusts the average value of the reference voltage based on the variable resistance adjusting signal, so as to make the average value of the reference voltage approach the average value of the feedback signal as much as possible. | 05-07-2015 |
20150123569 | LIGHTING FIXTURE WITH TOUCH-SENSITIVE LIGHT EMITTING SURFACE - Disclosed are methods and apparatus related to a LED-based lighting fixture having a touch-sensitive light emitting surface that may be touched by a user to change light output characteristics of LEDs of the lighting fixture. The LED-based lighting fixture may include a flexible touch-sensitive layer and a flexible light emitting layer having a plurality of individually controllable LED groups. Touch events may be detected via input from the flexible touch-sensitive layer and at least one light output characteristic of the LED groups altered in correspondence with the touch events. | 05-07-2015 |
20150123570 | Method of Automatically Providing Aisle Lighting and Apparatus to Perform the Same - A method and system for lighting merchandising aisles, in particular check-out aisles, is disclosed. A control unit activates lighting of the aisles automatically when the presence of a cashier is detected. Communicative links between control units in adjacent aisles allow lights to be controlled despite aisle space between the control unit and lighting hardware. The communicative link may be wireless. Frequency switching or encoding may be used to pair sets of controllers for a given aisle to the exclusion of others. Override switches are also provided as are power output for the lighting hardware and other ancillary hardware. The invention may also be adapted to merchandizing gondolas and end caps. | 05-07-2015 |
20150123571 | THERMAL PROTECTION STRUCTURE FOR MULTI-JUNCTION LED MODULE - A system includes a plurality of light-emitting devices electrically coupled together. A temperature of each of the light-emitting devices is correlated with a voltage of said light-emitting device. The system includes a current driver configured to control an amount of current through at least a subset of the light-emitting devices. The system includes electronic circuitry that is electrically coupled to the subset of the light-emitting devices. The electronic circuitry is configured to: measure a voltage of the subset of the light-emitting devices while the light-emitting devices are in operation; determine, based on the measured voltage, whether the subset of the light-emitting devices is hotter than an acceptable temperature threshold; and instruct the current driver to reduce the amount of current through the subset of the light-emitting devices if the subset of the light-emitting devices has been determined to be hotter than the acceptable temperature threshold. | 05-07-2015 |
20150130370 | METHOD AND DEVICE FOR CONTROLLING LED DISPLAY OF WEARABLE SMART EQUIPMENT - The present invention provides a method and a device for controlling an LED display of a wearable smart equipment, comprising: setting a plurality of LED display patterns which correlate to predetermined information of the wearable smart equipment; if a first display triggering signal is received, then determining a function information display type according to the first display triggering signal; and if the function information display type indicates that the LED display pattern to be implemented correlates to a predetermined information, then reading a current predetermined information of the wearable smart equipment, determining the LED display pattern according to the current predetermined information, and making the LEDs of the wearable smart equipment implement the LED display pattern that correlates to the current predetermined information, where the LED display patterns comprises lighting up, lighting out, flashing, changing display colors/position, changing display frequencies, changing display durations, changing of display order and any combination thereof. | 05-14-2015 |
20150137704 | BLEEDER CIRCUIT EMULATOR FOR A POWER CONVERTER - A bleeder circuit emulator for use in a power converter to compensate and increase the current demand from the Triac dimmer above its holding current. The circuit includes an input voltage modifier and a leading edge dimming detection circuit. The input voltage modifier receives an input voltage signal that is representative of a magnitude of an input voltage of the power converter and selectively provides a modified input voltage signal to an input of a controller in response to receiving a control signal. The modified input voltage signal is representative of a value that is less than the magnitude of the input voltage. The leading edge dimming detection circuit generates the control signal to engage the input voltage modifier to generate the modified input voltage signal in response to detecting leading edge dimming at an input of the power converter. | 05-21-2015 |
20150145437 | LIGHTING SYSTEM WITH AN INTERFACE HAVING A POWER SUPPLY UNIT AND AT LEAST ONE LIGHT SOURCE MODULE - Various embodiments may relate to a power supply unit, including an output for outputting an operating current depending on an internal measurement signal, a communications line, and a current-measuring device, which is connected to the communications line. The current-measuring device is designed to generate a current on the communications line which is proportional to the conductance of a current-setting resistance. The current-measuring device has a current mirror, which is designed to mirror the generated current on the communications line. The current-measuring device is designed to convert the mirrored current into an internal measurement signal with a reference potential which is different than the communications line. At least one light source module is connectable to the output, wherein the at least one light source module has the current-setting resistance, which is connectable to the communications line. | 05-28-2015 |
20150296595 | CIRCUIT DEVICE AND AN OBJECT EMBEDDING THE SAME - The present invention provides a circuit device for controlling a plurality of light-emitting devices disposed on an object to light in a sequence. The circuit device includes a motion actuated switch, a controller, and a battery. Each light-emitting device comprises at least two light-emitting diodes (LED) connected oppositely in polarities. The motion actuated switch is triggers the controller in response to a motion of the object. The battery is supplying the circuit device with electrical power. Moreover, the controller is electrically connected to the motion actuated switch and the light-emitting devices respectively, for driving the light-emitting devices to light in a predetermined way by altering the output voltage polarities or values from the controller to the light-emitting devices when triggered by the motion actuated switch. | 10-15-2015 |
20150296596 | LIGHTING SYSTEM AND CONTROL METHOD THEREOF - A lighting device may include a communication unit for establishing a communication connection with a terminal, a light emitting unit (including one or more light emitting units), and a controller for receiving physical information from the communication unit and controlling the light emitting unit based on the physical information. | 10-15-2015 |
20150305105 | LED BACKLIGHT DRIVING CIRCUIT AND METHOD FOR DRIVING THE LED BACKLIGHT DRIVING CIRCUIT - A light emitting diode (LED) backlight driving circuit includes a power assembly, a control assembly, and at least two LED lamps. The control assembly generates a power control signal according to a working state of the LED lamp, and the power assembly outputs a power corresponding to an on-LED lamp according to the power control signal. | 10-22-2015 |
20150305121 | CONFIGURABLE LIGHTING DEVICES UNDER BROADCAST CONTROL - A control unit for controlling an illumination parameter of one or more light sources of a plurality of light sources is described. The control unit being arranged to—select the one or more light sources of the plurality of light sources, receive an input signal representing a required value of the illumination parameter for the selected one or more light sources, convert the input signal to a broadcast signal for the plurality of light sources;—enable the broadcast signal to be provided to the plurality of light sources thereby enabling the selected one or more light sources to comply with the required value of the illumination parameter. | 10-22-2015 |
20150319820 | DIMMABLE MULTICHANNEL DRIVER FOR SOLID STATE LIGHT SOURCES - Systems and methods for driving solid state light sources are provided. A first drive circuit is configured to generate a drive current to cause a first solid state light source load and a second solid state light source load to illuminate. A feedback and control circuit is configured to receive feedback from the first solid state light source load and to control the drive current through the first solid state light source load based on the feedback. A second drive circuit is configured to control the drive current through the second solid state light source load. A master controller is configured to provide a first input to the feedback and control circuit to control the drive current through the first solid state light source load and a second input to the second drive circuit to control the drive current through the second solid state light source load. | 11-05-2015 |
20150323140 | RETROFIT LIGHTING DEVICE - There is provided a lighting device comprising at least one light source for providing light, a envelope encompassing said light source, a base to which said envelope is engaged, and a control means for adjusting the lighting settings of said lighting device. The control means are arranged for detecting a position in relation to the base of a point of reference being movably arranged on the lighting device. The lighting settings are adjusted in response to the detected position. | 11-12-2015 |
20150334808 | Biosensing Electronic Devices - The device consists of measuring aspects of human activity or emotion and then communicating that information to an adjustable lighting device or electronic display (as part of a phone, tablet, computer etc) such that the color temperature (or luminance) of the display or lamp is adjusted to match the mood of the user e.g. warmer in the evening close to the end of the day, and cooler in the morning for productivity. | 11-19-2015 |
20150342002 | Color control system with variable calibration - Embodiments relate to an illumination device comprising a plurality of LEDs emitting light in different source colors, the light of the illumination device being obtained by a combination of the source colors of the plurality of LEDs, an interface adapted to receive an input signal indicative of at least a color and/or brightness to be emitted by the illumination device, and a storage unit comprising colorimetric data indicative of colorimetric properties of the light emitted by the plurality of LEDs, where the colorimetric properties of the LEDs define the actual color gamut of the illumination device. The storage unit includes a predefined color gamut data, and a processing unit is adapted to generate an adjusted color gamut based on the actual color gamut and the predefined color gamut and generate an activation signal for the plurality of LEDs based on the input signal and the adjusted color gamut. | 11-26-2015 |
20150342010 | PERSONAL LIGHTING CONTROL SYSTEM AND METHOD - A method for monitoring and controlling lighting devices is disclosed, comprising: establishing a wireless link between each of the lighting devices and a wireless device, measuring in the wireless device a received wireless signal strength for each of the received wireless signals, creating in the wireless device a lighting device list such that the included lighting devices are ordered respectively to their received wireless signal strengths, and performing in the wireless device at least one predefined action based on the lighting device list. | 11-26-2015 |
20150349535 | Distributed Low Voltage Power Systems - A distributed low voltage power system is disclosed herein. The system can include a power source generating line voltage power, and a first line voltage cable having a first line voltage end and a second line voltage end, where the first line voltage end is coupled to the power source. The system can also include a first power distribution module (PDM) comprising a first power transfer device and a first output channel. The system can further include a first LV cable having a first LV end and a second LV end, where the first LV end is coupled to the first output channel of the first PDM. The system can also include at least one first LV device operating on the first LV signal, where the second LV end of the first LV cable is coupled to the at least one first LV device. | 12-03-2015 |
20150351186 | DEVICE FOR LED OPERATION - The invention relates to a method for operating LEDs ( | 12-03-2015 |
20150354786 | LIGHT SOURCE MODULE, LIGHTING DEVICE, AND LIGHTING SYSTEM - A are provided a light source module. The light source module including a light emitting device configured to emit light in a light emitting direction; and an optical device including a first surface disposed over the light emitting device and having a groove recessed in the light emitting direction in a central portion through which an optical axis of the optical device passes, and a second surface disposed opposite to the first surface and configured to refract light incident through the groove to be emitted to the outside. The optical device includes a plurality of ridges disposed on the second surface and periodically arranged in a direction from the optical axis to an edge of the optical device connected to the first surface. | 12-10-2015 |
20150359074 | SETTINGS FOR LIGHT LOADS CONNECTED TO BUS | 12-10-2015 |
20150373791 | LED OUTPUT RESPONSE DAMPENING FOR IRRADIANCE STEP RESPONSE OUTPUT - A system and method for operating one or more light emitting devices is disclosed. In one example, the intensity of light provided by the one or more light emitting devices is adjusted responsive to follow a step change in requested lighting output. | 12-24-2015 |
20150373803 | LIGHT SOURCE CONTROL DEVICE AND LIGHT SOURCE CONTROL METHOD - A light source control device includes a constant-current circuit that collectively supplies a current to a plurality of LEDs, a current detection circuit that divides the plurality of LEDs into groups and detects a current amount of a current supplied to each of the groups, and a microcomputer that detects an open fault in the LEDs on the basis of a ratio of the current amount in each of the groups and controls a current supplied from the constant-current circuit to be reduced in a case where an open fault is detected in the LEDs. | 12-24-2015 |
20150373804 | LED DRIVE CURRENT ADJUSTMENT FOR IRRADIANCE STEP RESPONSE OUTPUT - A system and method for operating one or more light emitting devices is disclosed. In one example, the intensity of light provided by the one or more light emitting devices is adjusted responsive to a temperature of the one or more light emitting device. The light is adjusted via modifying a current supplied to the one or more light emitting devices. | 12-24-2015 |
20150373815 | Systems and Methods for Controlling a Plurality of Electric Candles - Systems and methods are described for controlling a plurality of electric lighting devices and in some embodiments preventing the theft of those devices. A microprocessor can be used to analyze information about the devices and send one or more commands to the devices. A user interface allows a user to send a command to at least one of the electric lighting devices, which may alter at least one of a brightness of light emitted, a color of light emitted or other effects of the devices. | 12-24-2015 |
20150382411 | LIGHTING CONTROL DEVICE, LIGHTING DEVICE, AND LIGHTING FIXTURE - The lighting control device according to the present invention includes: a power supply for operating a light source including a first light source and a second light source lower in color temperature than the first light source; and a controller for controlling the power supply. The power supply includes: a first power supply for supplying power in a first range to the first light source; and a second power supply for supplying power in a second range to the second light source. The controller controls the first and second power supplies to adjust power supplied to the first light source and power supplied to the second light source so that a color temperature of the light source is equal to a color temperature which is selected from a predetermined color adjustment range as a desired value. The first range is lower in a lower limit than the second range. | 12-31-2015 |
20150382433 | NETWORKED SYSTEM OF INTELLIGENT LIGHTING DEVICES WITH SHARING OF PROCESSING RESOURCES OF THE DEVICES WITH OTHER ENTITIES - A system of network-connected lighting devices also offers a distributed processing function that utilizes processor and/or memory resources if/when available in some or all of the lighting devices. In the examples, a resource manager receives a job for distributed processing using shared available resources. The resource manager identifies lighting devices having resources of the processors and/or the memories available for the distributed processing function. The resource manager distributes tasks and/or data of the received job through a communications network to identified lighting devices, for distributed processing. The resource manager also receives results of distributed processing for the received job, from the identified lighting devices through the communications network. The received results are processed to produce a composite result for a response to the received job. | 12-31-2015 |
20160007425 | ILLUMINATING DEVICES AND SYSTEMS - Illuminating devices and systems are described herein. One illuminating device embodiment includes a computing component configured to determine a change in a state associated with a room in which the illuminating device is located based on a signal from a sensor, and an illuminating component configured to illuminate the illuminating device at a predefined setting associated with the determined state change and discontinue illuminating the illuminating device a predefined amount of time after the change in the state. | 01-07-2016 |
20160007429 | Lighting Control System and Method for Association of Nodes in a Multi-Node Network - The invention relates to a lighting control system and method for association of nodes in a multi-node network. The system comprises a number of lighting nodes forming a multi-node network, each lighting node comprising: —a light source; —a controller connected to the light source; and —communication means connected to the controller, wherein the lighting control system further comprises: —a memory component adapted to store information relating to at least one group of interrelated coordinates defined in a geographical coordinate system; and —a processing component in communication with the lighting nodes and adapted to automatically associate at least one lighting node with the at least one group on the basis of the geographical location of said at least one lighting node. | 01-07-2016 |
20160029459 | LIGHTING CONTROL SYSTEM AND LIGHTING CONTROL METHOD - The centralized lighting and air conditioning controller controls the light emission of lighting devices using brightness configuration values, and an environmental sensor transmits illuminance measurement values to the centralized lighting and air conditioning controller by wireless communication. The centralized lighting and air conditioning controller receives the illuminance measurement values, and based on the change in the illuminance measurement values and the change in the RSSI when the illuminance measurement values are received, acquires the degree of influence on the environmental sensor by the light from each of the lighting devices, and acquires the unknown or indeterminate position of the environmental sensor based on the degree of influence. | 01-28-2016 |
20160033108 | LENS FOR LIGHT EMITTER, LIGHT SOURCE MODULE, LIGHTING DEVICE, AND LIGHTING SYSTEM - There is provided a lens for a light emitter which includes: a bottom surface; an incident surface connected to the bottom surface at a central region of the bottom surface and disposed on or above a light source to allow light emitted from the light source to be made incident thereto and travel in an interior of the lens; and an output surface connected to the bottom surface at an edge of the bottom surface and configured to allow the light which has traveled in the interior of the lens to be emitted outwardly therefrom, wherein the central region of the bottom surface protrudes with respect to the other region of the bottom surface. | 02-04-2016 |
20160037612 | ADAPTIVE OPTICAL DISTRIBUTION SYSTEM - Embodiments of the invention include a luminaire that includes a plurality of different light engines. Light engines having different light distributions can be included in a single luminaire and a subset of the light engines selectively driven to dynamically change the light distribution of the luminaire. In this way, a single luminaire is capable of illuminating an area with a variety of different light distributions. | 02-04-2016 |
20160044757 | LED DRIVING DEVICE AND LIGHTING APPARATUS - A light emitting diode (LED) driving device includes a driving circuit configured to output a driving current for driving a plurality of LEDs using an input voltage, a protection circuit configured to generate a sensing voltage by detecting the input voltage, and a control circuit configured to control the driving circuit by detecting the sensing voltage and the driving current. The protection circuit includes a circuit element having hysteresis characteristics in response to the input voltage that is increased to be greater than a predetermined reference voltage or is decreased to be less than the predetermined reference voltage. | 02-11-2016 |
20160063927 | METHOD AND DEVICE FOR ADJUSTING BACKLIGHT BRIGHTNESS - The present disclosure provides a backlight brightness control method and a device for adjusting brightness of a backlight. The method comprises: receiving a control instruction to adjust a current brightness value to a target brightness value; stopping current supply to backlights of a first backlight assembly, determining a first target current value necessary for backlights of a second backlight assembly to reach the target brightness value, and providing the first target current value to the backlights of the second backlight assembly, when the current brightness value is greater than a first threshold and the target brightness value is less than the first threshold. | 03-03-2016 |
20160073481 | DEVICE FOR TRANSMITTING AN ELECTRICAL PARAMETRIZATION SIGNAL TO A DRIVE MEMBER OF A LIGHT-EMITTING DIODE BASED LIGHTING MODULE, ASSOCIATED POWER SUPPLY SYSTEM, LIGHTING ASSEMBLY AND METHOD OF TRANSMISSION - A device for transmitting an electrical parametrization signal to a drive member of a lighting module based on light-emitting diodes includes a device for transmitting the parametrization signal, while the drive member includes a device for changing the polarity of the lighting module. The transmission device is intended to be connected to a wired electrical link between the drive member and the lighting module and includes first device for detecting a signal for instructing the switching of the lighting module to reverse polarity. The transmission device are adapted for transmitting the parametrization signal to the drive member, subsequent to the detection of the signal for instructing reverse polarity. | 03-10-2016 |
20160073706 | ILLUMINATED GARMENT SYSTEM AND METHOD OF USING THE SAME - A garment (e.g., vest) designed to be worn over a motorcyclist's outer clothing with high intensity LED lighting installed on front and rear surfaces thereof and motion-sensing circuitry and corresponding software that detects motorcycle deceleration and controls the sequence, color and/or intensity of the LED lighting. A small, light battery pack installed in the garment powers the system. The motion-sensing circuitry and software detects that the motorcycle is decelerating when the driver releases or reduces the throttle, downshifts and/or applies the brakes. Responsive to the driver releasing or reducing the throttle, downshifting, applying the brakes and/or riding on upward-directed terrain, the electronics and software change the color output of LEDs on the rear surface of the garment to red. The electronics of the garment are sealed in watertight assemblies. | 03-17-2016 |
20160077197 | MITIGATING DISTURBANCE IN SENSING - A signal processing module for use with a receiver for receiving echoes of an emitted signal. The signal processing module comprises sensing logic for sensing presence of a being or object in a space using echoes of the signal as reflected from the being or object, wherein the echoes are received with an associated frequency band. The signal processing module further comprises control logic for detecting disturbance having potential to compromise said sensing, wherein the signal processing module is configured to detect this disturbance by listening for an unwanted signal in a region of the spectrum outside the frequency band of the echoes, and to adapt the sensing in dependence on the detected disturbance. | 03-17-2016 |
20160081165 | LIGHTING MODULE HAVING SURFACE LIGHT SOURCE AND LIGHTING SYSTEM - A lighting system includes a master device for transmitting a light emission control command, and a plurality of lighting modules. Each of the plurality of lighting modules has a surface light source, receives the light emission control command, and drives and controls the surface light source in accordance with control data for its own, the control data being included in the received light emission control command. | 03-17-2016 |
20160084487 | STANDALONE CAPACITANCE SENSOR FOR FURNITURE - A system and method for incorporating occupancy-detecting technology into furniture is provided. More particularly, the invention relates to detecting occupancy by a standalone capacitance detection device. The standalone capacitance detection device is configured for integration with any number of furniture items. Further, the detected capacitance may be used to determine commands for controlling a variety of devices associated with the standalone capacitance detection device. Additionally, methods for determining occupancy of a furniture item and a system for monitoring occupancy are described herein. | 03-24-2016 |
20160088703 | CONTROLLER AND CONVERTER INCLUDING FOR THE SAME - The object of the present invention is to provide a controller capable of controlling the brightness and preventing an erroneous operation from being generated and a converter including for the same. | 03-24-2016 |
20160088714 | CONTROLLING A FUNCTION OF A SPACE - A controller for use with a sensing apparatus that comprises a receiver for receiving echoes of an emitted signal. The controller comprises a control module for sensing a being in a space based on the echoes, configured to provide a function of the space in dependence on the sensing; and a timer configured to prevent a change in state of the function for a period after a result of the sensing. The control module is further configured to dynamically measure an estimate of disturbance received by the receiver and adapt the period based on the estimated disturbance. | 03-24-2016 |
20160088716 | SYSTEMS AND METHODS FOR MANAGING INTERACTION WITH CONTROLLABLE LIGHTING NETWORKS - Systems and methods for managing interaction with controllable lighting networks are disclosed. Particularly, a user's input regarding the user's preferred level of interaction with a controllable lighting network is used in conjunction with memories and processors, to selectively allow the controllable lighting network access to the user's personal data such as the user's identity or the user's personal lighting preferences. A user's preferred level of interaction with a controllable lighting network is also used, in conjunction with personal mobile electronic communication devices, to allow the user to control lighting within controllable lighting networks. | 03-24-2016 |
20160100467 | LOAD CURRENT CONTROL CIRCUIT - A system and method for operating one or more light emitting devices is disclosed. In one example, the intensity of light provided by the one or more light emitting devices is adjusted responsive to current feedback from the one or more light emitting devices. | 04-07-2016 |
20160111596 | LIGHTING SYSTEM - A lighting system includes a lighting unit comprising at least one lighting device, a sensing unit configured to measure at least one of atmospheric temperature and humidity, a controlling unit configured to compare the at least one of the temperature and the humidity measured by the sensor unit with set values and determine a color temperature of the lighting unit as a result of the comparison, and a driving unit configured to drive to the lighting unit to have the determined color temperature. | 04-21-2016 |
20160113090 | MULTI-FUNCTION LIGHTING SYSTEM - A multi-function lighting system is provided. Multiplex configuration of a lighting module and optical time domain modulation of an electric controlling system are applied to a lighting system which senses environmental conditions to automatically or artificially change a color, a light intensity and a color-temperature of a light to influence people's feelings and moods. The environmental sensing device further feedbacks an information of humidity or temperature so that parameter of optimum light environment can be set accordingly. The lighting module is applied to the design of the lighting system, such that the lighting system can be manufactured in a customization way to meet varied requirements in the landscaping and optical designs, not only reducing the cost and increasing mass production rate but also providing multi-functions including landscaping lighting, ergonomic lighting, display lighting, light communication, plant lighting air purifying, and preservation of fruits and vegetables. | 04-21-2016 |
20160128167 | METHOD AND SYSTEM FOR WIRELESS MUSIC-MODULATED LIGHTING USING LED LIGHTING DEVICES - The present disclosure provides a wireless music-modulated lighting method using LED lighting devices and a system thereof. The system comprises a main LED lighting device including a power drive module, a wireless RF module and a wireless audio module; and secondary LED lighting devices including a power drive module and a wireless audio module; a wireless router and a smart terminal. The main LED lighting device and the smart terminal access a wireless network through the wireless router. Audio signals sent by the smart terminal are transmitted to the main LED lighting device through the wireless router, and to the secondary LED lighting devices through the wireless audio module. The lighting devices are provided with a control unit configured to output different PWM or PFM light-adjusting signals to the power drive module according to different music, therefore changing lighting color and color temperature of the lighting devices. The present disclosure can automatically adjust lighting atmosphere or change lighting color and color temperature of the lighting devices in real time, therefore improve user experience. | 05-05-2016 |
20160135270 | ANTENNA ARRANGEMENT FOR A SOLID-STATE LAMP - An antenna arrangement for a solid-state lamp is disclosed. Embodiments of the invention provide for improved performance by positioning the antenna for radio frequency (RF) control of the lamp non-parallel to the main driver board and/or the LED board. This positioning can provide distance from the main board circuitry and a ground plane for the antenna. An RF daughter card can be used for the antenna and also possibly for other RF components. In some embodiments, the antenna is substantially perpendicular to the main board. In some embodiments, the lamp is dimensioned as a replacement for a standard incandescent bulb, such as an A, BR, or PAR bulb. In some embodiments, an optically transmissive enclosure and/or a base define the interior cavity of the lamp. A plurality of LEDs can be disposed within the optically transmissive enclosure. | 05-12-2016 |
20160135271 | LIGHTING CONNECTIVITY MODULE - A lighting module, including: a baseboard configured to receive a user signal indicating a user lighting preference; a communication submodule configured to receive the user signal and convert the user signal to machine readable data indicating the user lighting preference; a control submodule communicably coupled to the wireless communication submodule for receiving the machine readable data, wherein the microcontroller submodule comprises: memory configured to store a lighting parameter provided by a provider, and a processor configured to generate lighting driver instructions based on the user lighting preference and the lighting parameter; and a lighting mode output submodule configured to output the lighting driver instructions to a lighting driver module of a lighting assembly for controlling light emitting elements of the lighting assembly. | 05-12-2016 |
20160143101 | LED DRIVE CURRENT ADJUSTMENT FOR IRRADIANCE STEP RESPONSE OUTPUT - A system and method for operating one or more light emitting devices is disclosed. In one example, the intensity of light provided by the one or more light emitting devices is adjusted responsive to a temperature of the one or more light emitting device. The light is adjusted via modifying a current supplied to the one or more light emitting devices. | 05-19-2016 |
20160150603 | DC LED DRIVERLESS LIGHTING ASSEMBLY - A lighting assembly to be primarily used in an agricultural setting to illuminate farm animals with different colors of lighting. The assembly has a circuit for emitting light with different colored light emitting diodes that are arranged in networks of LEDs. The second and third networks are arranged in parallel to a first network of LED forming three separate current paths for lighting the LEDs. Each path has controllable impedance element arranged in series with the network of LED in that particular path and is controlled by a dynamic impedance control element that is coupled to the controllable impedance element to direct current through the individual paths of the circuit. | 05-26-2016 |
20160150622 | ADAPTIVE OUTDOOR LIGHTING CONTROL SYSTEM BASED ON USER BEHAVIOR - The invention provides A light management system for an outdoor lighting network system, comprising a plurality of outdoor light units wherein at least one light unit includes at least one sensor type, a central management system in communication with light units, said central management system sends control commands to one or more of said outdoor light units, in response to received outdoor light unit status/sensor information from one or more of said outdoor light units and implement a lighting strategy relating to the lighting characteristics of the plurality of outdoor light units, wherein the central management system uses the light unit status/sensor information to form a user's behavior analyses, and determine or estimate or predict the user's motion trajectory and/or position and a change in a user-controlled light use and/or ambient light, and determine whether to modify the lighting strategy and/or reconfigure one or more of the lights units. | 05-26-2016 |
20160150624 | PROXIMITY BASED LIGHTING CONTROL - A lighting system for controlling a lighting device by a control device is disclosed. The lighting system comprises the lighting device and the control device comprising a first user interface arranged for receiving a first user input. The lighting system further comprises a proximity detector arranged for detecting proximity between the control device and the lighting device. A processor is arranged for adjusting a control parameter of the lighting device based on the first user input if the proximity is detected within a predefined period of time after receiving the first user input. This enables a user to control the lighting device by bringing the control device in proximity of the lighting device, which results in a simple and intuitive way of controlling one or more lighting devices, and it removes the need for the user to indicate the target lighting device to be controlled on the control device. | 05-26-2016 |
20160157317 | SYSTEM AND METHOD FOR CONTROLLING OPERATION OF AN LED-BASED LIGHT | 06-02-2016 |
20160157326 | LIGHT SWITCH CONTROLLING LIGHT SOURCE VIA WIRELESS TRANSMISSION | 06-02-2016 |
20160165683 | AUTOMATIC POWER CONTROLLER - Systems and methods for operating one or more light emitting devices are disclosed. In one example, the a negative temperature coefficient control parameter is applied to an amplifier to adjust a gain of the amplifier so as to provide a substantially constant level of irradiance output from one or more light emitting devices. | 06-09-2016 |
20160165695 | INRUSH ENERGY CONTROL FOR A LIGHT EMITTER - A lighting module configured to be powered by an external driver includes a light emitting diode (LED) array, and a control circuit configured to control current initially applied by the external driver to the LED array. A lighting system includes a driver configured to provide a constant current power supply and a plurality of lighting modules coupled to the driver. Each lighting module includes a light emitting diode (LED) array, and an integrated control module including an attenuator configured to attenuate current initially applied by the driver to the LED array in response to a received control signal, and a processor configured to generate the control signal to the attenuator. | 06-09-2016 |
20160165696 | SYSTEM AND METHOD FOR CONTROLLING LED SEGMENTS TO PROVIDE LIGHTING EFFECTS - A single board light engine includes an AC to AC step driver that selectively powers multiple LED segments by controlling tap points between the LED segments as the input voltage goes from zero crossover to maximum voltage and returns to zero crossover. The step driver may power a first LED segment, a second LED segment, both the first and second LED segments, or none of the LED segments depending upon the input voltage level. The LEDs within an LED segment may share a characteristic that differs from a characteristic shared by LEDs in another segment, which allows the LED fixture to provide a variety of lighting effects. | 06-09-2016 |
20160165698 | SYSTEM AND METHOD OF ILLUMINATING LIVESTOCK - A system and method for illuminating livestock within an agricultural dwelling. The system has a plurality of lighting assemblies that are electrically connected to a dimming device. The lighting assemblies are dimmed from a white color to predetermined wavelength to result in a predetermined behavior of the livestock. The predetermined wavelength and behavior includes a red wavelength that is undetected by the livestock thus resulting in the predetermined behavior of the livestock sleeping while workers can continue to work or function within the agricultural dwelling. | 06-09-2016 |
20160174309 | LED OUTPUT RESPONSE DAMPENING FOR IRRADIANCE STEP RESPONSE OUTPUT | 06-16-2016 |
20160174327 | CONTROL CIRCUIT OF LED LIGHTING APPARATUS | 06-16-2016 |
20160174344 | SYSTEM AND METHOD FOR REDUCING PEAK AND OFF-PEAK ELECTRICITY DEMAND BY MONITORING, CONTROLLING AND METERING LIGHTING IN A FACILITY | 06-16-2016 |
20160192451 | System for Decreasing Energy Usage of a Transparent LCD Display Case - An apparatus for controlling a backlight is disclosed. The apparatus includes a housing and door. A transparent liquid crystal display and associated backlight is positioned between front and rear glass panels of said door. A door sensor is positioned to detect if the door is open or shut, and a controller connected to the backlight and door sensor measures the amount of time that has passed between door openings and drives the backlight at various levels based upon the elapsed time. | 06-30-2016 |
20160192598 | LIGHTING DEVICE, ASSEMBLY AND METHOD FOR GROWING HORTICULTURE INDOORS | 07-07-2016 |
20160205731 | HOT PLUG MODULE AND DRIVER FOR ILLUMINATING DEVICE AND ILLUMINATING DEVICE | 07-14-2016 |
20160205737 | SELF-IDENTIFYING SOLID-STATE TRANSDUCER MODULES AND ASSOCIATED SYSTEMS AND METHODS | 07-14-2016 |
20160205740 | LIGHT EMITTING DEVICE | 07-14-2016 |
20160205746 | CONTROL OF A LIGHTING SYSTEM | 07-14-2016 |
20160377262 | SYSTEM AND METHOD FOR PROVIDING COLOR LIGHT SOURCES IN PROXIMITY TO PREDETERMINED WAVELENGTH CONVERSION STRUCTURES - An optical device includes a light source with at least two radiation sources, and at least two layers of wavelength-modifying materials excited by the radiation sources that emit radiation in at least two predetermined wavelengths. Embodiments include a first plurality of n radiation sources configured to emit radiation at a first wavelength. The first plurality of radiation sources are in proximity to a second plurality of m of radiation sources configured to emit radiation at a second wavelength, the second wavelength being shorter than the first wavelength. The ratio between m and n is predetermined. The disclosed optical device also comprises at least two wavelength converting layers such that a first wavelength converting layer is configured to absorb a portion of radiation emitted by the second radiation sources, and a second wavelength converting layer configured to absorb a portion of radiation emitted by the second radiation sources. | 12-29-2016 |
20160377391 | Light-Based Incapacitating Apparatus and Method - Apparatus and method for using a light source having spatially separated light emitting areas emitting light at different wavelengths to incapacitate a subject by a pattern of temporal flashing and/or color flashing of the light source. Reflectors adapted for use with spatially separated light substrates provide for light concentration from lower powered optical sources. | 12-29-2016 |
20160381749 | VARIABLE-BEAM LIGHT SOURCE AND RELATED METHODS - Light sources with arrangements of multiple LEDs (or other light-emitting devices) ( | 12-29-2016 |
20160381758 | System And Method For Controlling A Wayside Device - A system includes at least one signal light having at least one lamp. The system further includes a control device electrically connected to the at least one lamp by a conductive cable. The at least one lamp is configured to flash in response to the loss of an audio signal generated by the control device. | 12-29-2016 |
20160381759 | LIGHTING DEVICE, LIGHTING FIXTURE, AND LIGHTING SYSTEM - The lighting device includes a control unit configured to set desired values of drive currents of solid state light sources with different light emission colors. The control unit has a normal mode and a correction mode. The normal mode is a mode of setting the desired values to normal desired values corresponding to instruction values representing a desired color of colors. The correction mode is a mode of setting the desired values to corrected desired values corresponding to corrected instruction values obtained by correcting the instruction values. | 12-29-2016 |
20160381763 | SYSTEM AND METHOD UTILIZING BIO-ALGORITHMS FOR LIGHT FIXTURE NETWORKS - According to some embodiments, information about at least one user associated with a light fixture network, having a plurality of light fixtures each equipped with a wireless communication device, may be received. A bio-algorithm to be applied to the light fixture network may then be determined based on the information about the at least one user. An appropriate lighting parameter (e.g., a luminescence, a wattage, a color characteristic, and/or a wavelength) for at least one of the light fixtures in the light fixture network may be dynamically calculated, and it may be arranged for the at least one light fixture to operate in accordance with the dynamically calculated lighting parameter. | 12-29-2016 |
20170238389 | LED MODULE | 08-17-2017 |
20180027623 | METHODS AND APPARATUS FOR ADAPTABLE LIGHTING UNIT | 01-25-2018 |
20180027624 | CONTROL CIRCUIT AND METHOD OF LED LIGHTING APPARATUS | 01-25-2018 |
20180027625 | SYSTEM AND METHOD FOR CONTROLLING OPERATION OF AN LED-BASED LIGHT | 01-25-2018 |
20190150246 | Toggle Control for Lighting System | 05-16-2019 |