| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 315308000 | Regulator responsive to plural conditions | 39 |
| 20080252236 | Method and Device Capable of Controlling Soft-start Dynamically - A back light boost converter includes an analog circuit, an enable controller, a logic device, and a digital PWM controller. The analog circuit generates a switch signal and a feedback signal based on a first pulse signal. The enable controller generates an enable signal based on an LED on ratio signal, an LED on cycle signal, a duty cycle signal, and a frequency signal. The logic device generates a second pulse signal based on the feedback signal and the enable signal. The digital PWM controller outputs the first pulse signal with increasing duty cycles in a plurality stages. | 10-16-2008 |
| 20080297070 | Programmable lighting unit and remote control for a programmable lighting unit - A programmable lighting unit includes a radio interface to be remote controlled by a radio remote control. In particular, the remote control sends parameter data which is supplied to parameter adjustment means in the programmable lighting unit which programs the parameter data such that a controller of the programmable lighting unit controls a controllable lamp dependent on the parameter data. In particular, the controller is adapted to be programmed using the one or the multiple parameters such that a reaction by the controller to the control data depends on the one or the multiple parameters. | 12-04-2008 |
| 20080303456 | High Efficiency Power Controller for Solid State Lighting - A high efficiency power controller comprising of a driver circuit to convert to direct current (DC) voltage from alternating current (AC) voltage is used for drive solid state lighting (SSL) including light emitting diode (LED) and organic light emitting diode (OLED). The driver circuit is comprises of an AC-DC limited current unit, sensor processor, signal generator, feedback controller and SSL lamp module, which converts the AC supply voltage to a DC voltage by using a negative feedback current and voltage limiting circuit for powering SSL. The invented driver circuit operates at high efficiency with low power consumption. The current and voltage feedback circuit mode from current, voltage, light intensity and thermal temperature for SSL possesses reliable DC power driver without any flash during lighting. | 12-11-2008 |
| 20090033247 | Electrical Wiring Device with a Center Nightlight Having Automatic and Manual Control Features - The present invention is directed to a electrical wiring device that includes a housing having a plurality of line terminals. A cover assembly is coupled to the housing, the cover assembly including at least one set of receptacle openings disposed on either side of a central portion of the cover assembly. A plurality of receptacle terminals are disposed in the housing, each of the plurality of receptacle terminals being coupled to a corresponding one of a plurality of load terminal structures. Each of the plurality of receptacle terminals is in communication with a corresponding one of the at least one set of receptacle openings. A light assembly is disposed in the central portion of the cover assembly and coupled to the plurality of line terminals or the plurality of load terminals. The light assembly has a light transmission region disposed in the central portion. The light transmissive region occupies a substantial portion of a width of the cover assembly. An automatic control mechanism is coupled to the light assembly and configured to selectively drive the light assembly from a deenergized state to a light emitting state in response to a predetermined stimulus. A manual control mechanism is coupled to the light assembly and configured to selectively regulate the amount of light transmitted by the light assembly when in the light emitting state. | 02-05-2009 |
| 20090085502 | Method and Apparatus for Maximizing the Sustainable Flash of a Handheld Portable Electronic Device - A method and apparatus for maintaining a maximum sustained flash current over the whole length of a flash using a programmable current drive in a handheld portable device powered by a battery. The method involves measuring the battery voltage before and after a flash is initiated and calculating the equivalent series resistance (ESR) of the battery. The calculated ESR is then used to adjust the flash current. The process may be repeated to correct for errors in the flash current. | 04-02-2009 |
| 20090091273 | LIGHT SOURCE FOR GENERATING EXTREME ULTRAVIOLET LIGHT FROM PLASMA - A plasma generation apparatus for generating a plasma within a discharge chamber is disclosed, which includes a plurality of electrodes disposed within the discharge chamber, a power supply device operative to flow a discharge current between electrodes for performing self-heating of a plasma between the electrodes and for applying a self-magnetic field to the plasma, and a control unit for control of the power supply device, wherein the control unit controls the power supply device in such a way as to confine the plasma in a space, thereby improving the conversion efficiency of extreme ultraviolet (EUV) light. A plasma generation method is also disclosed. | 04-09-2009 |
| 20090102400 | METHOD FOR DRIVING A PTC ELECTRICAL LOAD ELEMENT - A method is intended to make it possible to drive a PTC electrical load element with a switching unit with the highest possible operational reliability. For this purpose, the electric current is switched off if a predetermined current threshold value is exceeded, the magnitude of the current threshold value being determined from the operating parameters of the load element. | 04-23-2009 |
| 20090134819 | Illumination and sleep evaluation system - An illumination system ( | 05-28-2009 |
| 20090167212 | Driving Circuit and Method for Preventing Lamp from Blasting - In a driving circuit and method for preventing a lamp from blasting, a driving circuit includes a control circuit module, a voltage conversion circuit module, a driving module and a feedback circuit. The control circuit module outputs a first control signal according to a predetermined setting. The voltage conversion circuit module receives the first control signal and converts the first control signal into a second control signal. The driving module receives the second control signal and generates a driving signal according to the second control signal for driving the lamp. The feedback circuit electrically couples to one of the control circuit module, the voltage conversion circuit module and the driving module for receiving a feedback signal therefrom. The feedback signal is transmitted to the control circuit module, so that the control circuit module may adjust the first control signal according to the feedback signal. | 07-02-2009 |
| 20090184671 | DISCHARGE LAMP LIGHTING APPARATUS AND SEMICONDUCTOR INTEGRATED CIRCUIT - A discharge lamp lighting apparatus has a switch circuit to convert a DC voltage into an AC voltage, a transformer, a discharge lamp, an error amplifier of a reference voltage and a voltage representative of a lamp current, a control circuit generating a PWM control signal, and a soft start circuit to carry out, at the start of a lighting operation, a soft start operation that gradually extends ON intervals of the PWM control signal to gradually increase the lamp current upto a target lamp current. The soft start circuit carries out the soft start operation in such a way that an increment in ON intervals of the PWM control signal in a period from when the discharge lamp lights to when the target lamp current is attained is smaller than that in a period from when the lighting operation starts to when the discharge lamp lights. | 07-23-2009 |
| 20090230891 | LED DRIVER WITH DYNAMIC POWER MANAGEMENT - Power management in a light emitting diode (LED) system having a plurality of LED strings is disclosed. A voltage source provides an output voltage to drive the LED strings. An LED driver monitors the tail voltages of the active LED strings to identify the minimum, or lowest, tail voltage and adjusts the output voltage of the voltage source based on the lowest tail voltage. The LED driver can adjust the output voltage so as to maintain the lowest tail voltage at or near a predetermined threshold voltage so as to ensure that the output voltage is sufficient to properly drive each active LED string with a regulated current in view of pulse width modulation (PWM) performance requirements without excessive power consumption. | 09-17-2009 |
| 20090278477 | METHOD FOR CONTROLLING LIGHT-EMISSION OF A LIGHT-EMITTING DIODE LIGHT SOURCE - A method for controlling light-emission of a light-emitting diode (LED) light source whose heat is dissipated by a thermal module is provided. The method includes following steps: providing a constant current source to drive the LED light source and obtaining a reference voltage correspondingly; monitoring and obtaining a dynamic voltage of the LED light source; and comparing the dynamic voltage with the reference voltage and adjusting a heat-dissipating power of the thermal module in real time to make the dynamic voltage of the LED light source approach the reference voltage. By monitoring the dynamic voltage of the LED light source and adjusting the heat-dissipating power of the thermal module in real time, light power of the LED light source can be maintained. | 11-12-2009 |
| 20090278478 | DC voltage converter - A DC voltage converter used for producing a driving voltage to drive a load comprising a step-up circuit and a modulation circuit is provided. The step-up circuit is used for receiving an input voltage and boosting the input voltage to produce an output voltage. The output voltage is controlled according to a feedback voltage indicative of state of the load. The modulation circuit is electrically connected to the step-up circuit and transforms the output voltage into the driving voltage with a higher voltage level so as to further increase the voltage level of the already boosted output voltage. | 11-12-2009 |
| 20090322257 | SWITCHING MODE POWER SUPPLY FOR PLASMA DISPLAY PANEL - In accordance with the present invention, the SMPS circuit for PDP includes first and second transformers inducing voltages supplied to primary sides to secondary sides; a plurality of DC/DC converters connected to secondary sides of the first and second transformers and supplying voltages of different sizes; a clamp circuit connected to the secondary side of the first transformer and outputting an address voltage of a predetermined size by receiving a voltage supplied from the first transformer; and a linear regulator unit connected to the DC/DC converter for supplying a low voltage among the DC/DC converters connected to the secondary side of the first transformer and outputting a gate voltage of a predetermined size by receiving the low voltage supplied from the DC/DC converter. | 12-31-2009 |
| 20100001663 | Light source driving circuit with over-voltage protection - An over-voltage protection circuit clamps an output voltage of a light source driving circuit. The over-voltage protection circuit includes a transistor and two resistors. When the load of the light source driving circuit is broken, the over-voltage protection circuit utilizes the current generated from the error amplifier in order to enter the transistor into saturation region and accordingly generates a fixed gate voltage. The fixed gate voltage is utilized to clamp the output voltage of the light source driving circuit through the two resistors. | 01-07-2010 |
| 20100052575 | Methods and Systems for Reducing View-Angle-Induced Color Shift - Elements of the present invention relate to systems and methods for generating, modifying and applying backlight array driving values. In some embodiments, color ratios are used to determine backlight array driving values that reduce color shift at side-view angles. In some embodiments, backlight color values may be adjusted to also reduce color shift from side-view angles. | 03-04-2010 |
| 20110204823 | LED DRIVER CIRCUIT WITH OPEN LOAD DETECTION AND ASSOCIATED CONTROL METHOD - An LED driver circuit prevents an increase in output voltage of a DC/DC converter in an open circuit condition associated with removal or failure of an LED lighting device. A DC power source provides a first DC voltage across positive and negative voltage rails. A DC/DC converter includes a switching element which when turned ON/OFF provides a second DC voltage across first and second ends of a capacitor which further define first and second LED lighting device connection terminals. A control circuit, upon receiving a drive power signal, turns ON/OFF the switching element to provide constant current control. A power supply circuit is coupled between the second LED lighting device connection terminal and the negative voltage rail and generates the drive power signal to the control circuit during a detected lighting condition. The power supply circuit further disables the drive power signal during a detected open circuit condition. | 08-25-2011 |
| 20110241572 | LED CONTROLLER WITH COMPENSATION FOR DIE-TO-DIE VARIATION AND TEMPERATURE DRIFT - A system including a calibration module, a selection module, and a control module. The calibration module is configured to generate calibration data for a plurality of light emitting diodes (LEDs). The calibration data include current through the LEDs and corresponding luminosities of the LEDs. The selection module is configured to select one of a plurality of templates corresponding to the LEDs. The selected template includes at least one of temperature, current, and voltage characteristics of the LEDs. The control module is configured to determine a temperature of the LEDs and adjust current through the LEDs based on the temperature, the selected template, and the calibration data to maintain a luminosity of the LEDs at a predetermined luminosity. | 10-06-2011 |
| 20110309772 | SYSTEMS AND METHODS FOR LUMINESCENT DISPLAY - A ruggedized luminescent display system for displaying electronic images or light from a surface of an object, according to various aspects of the present invention, may comprise a resilient transmissive material disposed within a cavity of the object and may have a surface that is configured to be substantially flush with an outer surface of the object. A light source may be disposed within the object and may emit light through the resilient transmissive material such that the light may be visible from the outer surface of the object. The light source may be electrically coupled to an integrated circuit board with a control system comprising a microcontroller that may control the emission of light from the light source in response to a signal. The microcontroller may receive the signal from a motion sensor that may be electrically coupled to the integrated circuit board and configured to detect the motion of the object. | 12-22-2011 |
| 20120013271 | Technology field - A flexible energy saving lighting power supply system includes a first level protection circuit composed of discharge tube CR | 01-19-2012 |
| 20120119678 | METHOD FOR DRIVING A PTC ELECTRICAL LOAD ELEMENT - A method is intended to make it possible to drive a PTC electrical load element with a switching unit with the highest possible operational reliability. For this purpose, the electric current is switched off if a predetermined current threshold value is exceeded, the magnitude of the current threshold value being determined from the operating parameters of the load element. | 05-17-2012 |
| 20120262093 | LIGHTING DEVICE CAPABLE OF MAINTAINING LIGHT INTENSITY IN DEMAND RESPONSE APPLICATIONS - Aspects of the present invention further include a lighting system comprising a lighting source, a connector in electrical communication with the lighting source and an external power source, an energy storage device, an input device, and a controller. The controller may be configured to identify the presence of a load indicator signal received via the input device, determine whether the load indicator signal indicates a load-reducing state, and when the load indicator signal indicates the load-reducing state, discharge the energy storage device to maintain an intensity of the lighting source. | 10-18-2012 |
| 20120268039 | Switching power supply with power feedback to keep lamp's brightness constant - A power supply and methods are provided. In one implementation, the power supply includes a switching converter with power feedback circuit to output constant power to keep lamp at constant brightness. The power feedback circuits include a current feedback circuit and a voltage feedback circuit. The power supply further includes a controller operable to adjust on time or duty cycle of main switch to keep the output power constant. | 10-25-2012 |
| 20120293092 | APPARATUS AND METHOD FOR CONTROLLING FLASH IN PORTABLE TERMINAL - A method and an apparatus for control a flash in a mobile terminal. In the method, a current use state of the mobile terminal is detected. A use amount of a current of the flash is controlled depending on the current use state. The flash is allowed to emit light depending on the controlled amount of the current. | 11-22-2012 |
| 20130119895 | LED DRIVING CIRCUIT AND DRIVING CONTROLLER FOR CONTROLLING THE SAME - A driving controller for driving a load is disclosed. The driving circuit includes a driving power supply and the driving controller. The driving power supply provides a first power source to the load. The controller is coupled to a second power source to receive an electric power for operating. The controller controls the amount of the electric power to the load when operating in a first mode and stops the driving power supply from providing the electric power to the load when operating in a second mode. The controller operates exclusively in the first mode before the driving power supply provides the first power source to the load. | 05-16-2013 |
| 20130169191 | LED LIGHTING DEVICE - When an output current is shut off by disconnection, a control unit | 07-04-2013 |
| 20130271041 | DRIVER CIRCUIT FOR IMPROVING UTILIZATION RATE OF LED DEVICE AND RELATED CONSTANT CURRENT REGULATOR - A driver circuit for driving an LED array is disclosed. The LED array includes a first, a second, a third, a fourth LED device and a diode device. The second LED device is connected to the first LED device. The fourth LED device is connected to the third LED device. The diode device is connected between the second LED device and the third LED device. The driver circuit includes a first constant current regulator for coupling between the first and the second LED device; a second constant current regulator for coupling between the second and the third LED device; a third constant current regulator for coupling between the third and the fourth LED device; a fourth constant current regulator for coupling between the fourth LED device and a fixed-voltage terminal; and a control circuit coupled with the first, the second, the third, and the fourth constant current regulators. | 10-17-2013 |
| 20140176019 | MOOD LAMP SYSTEM, METHOD OF CONTROLLING MOOD LAMP, AND MOOD LAMP CONTROLLING APPARATUS - A mood lamp system, a method of controlling a mood lamp, and a mood lamp controlling apparatus that include a mood lamp and a mood lamp controlling apparatus that is configured to select a mode of the mood lamp from a plurality of modes including an off mode, a mood mode, and a music mode. In addition, a mood lamp controller is configured to operate the mood lamp based on the mode of the mood lamp. The mood lamp may emit light of a single color in the music mode. | 06-26-2014 |
| 20140346975 | MULTI-ELECTRODE FIELD EMISSION DEVICE HAVING SINGLE POWER SOURCE AND METHOD OF DRIVING SAME - A field emission device and a method of driving the multi-electrode field emission device having a single driving power source are disclosed. The field emission device includes a cathode electrode, one or more gate electrodes, a voltage division unit, and a power source unit. The cathode electrode is figured such that at least one emitter is formed thereon. The gate electrodes are disposed between an anode electrode and the cathode electrode, and each have one or more openings through which electrons emitted from the emitter can pass. The voltage division unit has one or more divider resistors, and divides a voltage applied from the power source unit using the divider resistors and then applies partial voltages to the one or more gate electrodes. The power source unit includes a single power source, and applies the voltage to the voltage division unit. | 11-27-2014 |
| 20150028778 | Programmable Phase-Cut Dimmer Operation - The present document relates to solid state lighting (SSL) devices. A driver circuit for phase-cut dimmable SSL based lighting assemblies is described. A control circuit for a power converter is provided. The power converter is configured to convert an input power derived from a mains power supply into a drive power for a light source. The control circuit comprises a dimmer mode detection unit to determine a first dimmer mode. The first dimmer mode indicates if the input power has been derived from the mains power supply using a dimmer. The control circuit comprises a state processor configured to determine a first operation mode of the power converter. The pre-determined first state information is dependent on the first dimmer mode. The control circuit comprises a first control unit configured to generate a first control signal for operating the power converter in accordance to the first operation mode. | 01-29-2015 |
| 20150130373 | LIGHTING APPLICATION FOR AN INTERACTIVE ELECTRONIC DEVICE - Methods and apparatus, including computer program products, for a lighting application for an interactive electronic device ( | 05-14-2015 |
| 20150137708 | Light Control System and Light Control Method Thereof - A light control system and a light control method thereof are disclosed. The light control system is used for controlling a light-emitting device. The light control system includes an ambient status sensing module, a storage module, a controlling module, and a driver module. The ambient status sensing module is used for sensing an ambient state to generate an ambient state value. The storage module has a database for storing a plurality of parameter values, wherein the plurality of parameter values are corresponded to a plurality of ambient state values. The controlling module is used for searching the plurality of parameter values stored within the database according to the ambient state value, so as to generating a controlling signal. The driver module is used for driving the light-emitting device according to the control signal. | 05-21-2015 |
| 20150351197 | In-House Control System - According to one embodiment, an in-house control system is for controlling an in-house electric equipment. An acquisition unit acquires biological information of a user. A storage part stores the biological information acquired by the acquisition unit. A setting part sets schedule information. A control part controls the electric equipment based on the schedule information set by the setting part and the biological information stored in the storage part. | 12-03-2015 |
| 20160066385 | METHOD AND CIRCUIT ASSEMBLY FOR OPERATING AN LED LIGHT SOURCE - A method for operating an LED light source, wherein the portion of the electrical power (P | 03-03-2016 |
| 20160174338 | Integrated Control Circuit with Combined Temperature and Presence Detection | 06-16-2016 |
| 20160183350 | METHODS AND APPARATUS FOR APPLYING LIGHTING TO AN OBJECT | 06-23-2016 |
| 20160192460 | APPARATUSES AND METHODS TO DETECT AND PROVISION FOR LIGHTING INTERFACES - Methods and apparatuses relate to detection and provisioning for lighting interfaces. In one embodiment, a hardware apparatus includes a sensing module to detect a lighting interface from a plurality of lighting interfaces to power a light emitting element, and a dimming module to supply multiple power levels of the lighting interface to the light emitting element. In another embodiment, a hardware apparatus further includes a communication module to provide a signal from a network to the sensing module to detect the lighting interface. A lighting interface may be a digital lighting interface or an analog lighting interface. | 06-30-2016 |
| 20170238402 | METHOD FOR OPERATING A DISCHARGE LAMP OF A PROJECTION ARRANGEMENT AND PROJECTION ARRANGEMENT | 08-17-2017 |
| 20180027638 | SMART LIGHTING SYSTEM WITH ULTRA-LOW STANDBY CONSUMPTION | 01-25-2018 |
