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US20090115343 LED Power Regulator with High-Speed LED Switching  
One embodiment of the invention includes a power regulator system. The system comprises at least one power switch configured to repeatedly couple an inductor to an input voltage to regulate a...
US20120153024 ILLUMINATION DRIVER CIRCUIT FOR USING IN IMAGING-BASED BARCODE READER  
Illumination driver circuit for using in an imaging-based barcode reader is configured to provide the driving current for the illumination source with a Buck regulator when the driving current is...
US20110089856 LIGHT EMITTING DIODE LAMP AND CONTROL CIRCUIT THEREOF  
A control circuit for controlling current through LEDs of an LED lamp includes a voltage regulator, a feedback circuit with an amplifier and a photo-resistor. The voltage regulator includes an...
US20120229048 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...
US20110018461 METHOD FOR PRODUCING A HIGH-PRESSURE DISCHARGE LAMP, METHOD FOR PRODUCING LIGHT USING A HIGH-PRESSURE DISCHARGE LAMP AND DIGITAL VIDEO PROJECTOR  
A method for providing a high-pressure discharge lamp may include establishing a setpoint power of the high-pressure discharge lamp, establishing an upper limit Imax in A for the current intensity...
US20090001904 Ignition controller, light source, projector and ignition control method  
An ignition controller that controls ignition of a discharge lamp discharging and emitting light between a pair of electrodes provided therein, the controller includes: an ignition device that...
US20110193485 Poly-chromatic light-emitting diode (LED) lighting system  
The invention discloses a novel control system for a Poly-Chromatic light-emitting diode (LED) lighting system, and applies feed forward and feedback control techniques to regulate the color and...
US20110043136 LIGHT EMITTING DIODE SYSTEM  
The invention relates to a light emitting system (100), the system comprising a light emitting diode (104), a socket adapter for retrofitting a fluorescent lamp and an electric circuit (112; 200;...
US20070132402 Lighting-drive device, light source device, and display device  
A lighting-drive device includes: a lighting-drive circuit configured to drive a lamp for lighting of the lamp; an activation circuit configured to produce an activation voltage to be applied to...
US20100327765 LOW ENERGY TRANSFER MODE FOR AUXILIARY POWER SUPPLY OPERATION IN A CASCADED SWITCHING POWER CONVERTER  
A cascaded power converter having an auxiliary power supply operated from the second switching power stage provides efficient operation by activating the auxiliary power supply early in the...
US20140252981 Utilizing Secondary-Side Conduction Time Parameters of a Switching Power Converter to Provide Energy to a Load  
A power distribution system includes controller of a switching power converter to control the switching power converter and determine one or more switching power converter control parameters. In...
US20100326526 EMISSIVE ARYL-HETEROARYL COMPOUNDS  
Disclosed herein are compounds represented by Formula 1, wherein R1, Ar1, X, Ar2, Ara, and Het are described herein. Compositions and light-emitting devices related thereto are also disclosed.
US20140354172 Illumination systems  
An illumination system includes a master power supply providing power to several illumination modules. The master power supply is constructed and arranged to generate high-frequency and...
US20090140664 BACKLIGHT DRIVING METHOD AND DISPLAY APPARATUS USING THE SAME  
A display and a method for driving a backlight thereof are provided. The display generates a control voltage and supplies the generated control voltage to a backlight driving unit in a step-wise...
US20100295466 LED DRIVING DEVICE, ILLUMINATING DEVICE, AND DISPLAY DEVICE  
Provided is an LED driving device which can stably reduce brightness of an LED. The LED driving device provided with: a driving voltage switching means (Q1008) for switching between a first...
US20100164395 Flourescent Lamp Whose Ballast Has An Output Power That Is Regulated For Flourescent Tubes Of Different Power Specifications  
A fluorescent lamp includes a ballast, a holder, a power regulating switch, and a fluorescent tube. The power regulating switch includes a housing, a base, plurality of inductors, a plurality of...
US20100013649 LOAD CONTROL DEVICE HAVING AUDIBLE FEEDBACK  
A load control device for controlling the amount of power delivered from an AC power source to an electrical load comprises a non-visual, haptic sensory output structure for producing a variable...
US20080246414 INDUCTIVE LOAD SENSOR FOR DIMMER CIRCUIT  
A lighting control circuit includes a dimmer circuit which is provided for an electrical outlet. An inductive load detection circuit is provided for identifying the presence of an inductive load...
US20140361706 Slew Rate Controlled Transistor Driver  
A gate driver circuit providing a slew-rate controlled gate control signal while minimizing the stretching of the gate control signal relative to the input control pulse. Control logic effects two...
US20060097658 Apparatus for adjusting brightness of indicator light on panel  
An apparatus for adjusting brightness of indicator light on a panel is provided. By employing pulse width modulated signals, one can control the amount of current flowing into the indicator light,...
US20100052566 LED LIGHTING DEVICE AND LIGHTING EQUIPMENT  
An LED lighting device including a DC power source circuit, a high frequency generation circuit which includes an inverter circuit having switching elements and a resonance circuit having a...
US20150103323 DISCHARGE LAMP DRIVING DEVICE, PROJECTOR, AND DISCHARGE LAMP DRIVING METHOD  
A discharge lamp driving device includes: a discharge lamp driving unit which supplies drive power to a discharge lamp; and a control unit which controls the discharge lamp driving unit. The...
US20080122383 Led driver  
An LED driver according to the present invention feeds an electric power to an LED circuit, which is either of a single LED or a plurality of LEDs serially connected together. The LED driver...
US20120013269 POWER SUPPLY APPARATUS FOR AN LED LAMP  
The present invention provides a power supply apparatus for an LED lamp, which mainly uses an isolation transformer to convert a high voltage AC input signal into a low voltage AC signal and thus...
US20080197788 Programmable Underwater Lighting System  
The present disclosure relates to a programmable underwater lighting system for pools and spas. A plurality of underwater lights, each having a plurality of LEDs for producing light of various...
US20110121748 DECODING CIRCUIT AND DECODING METHOD THEREOF  
A decoding circuit is adapted for decoding an input signal. The input signal includes at least a break and the time length of the break is a preset time. The decoding circuit includes a decoding...
US20130308431 OPTICAL SOURCE DRIVER CIRCUIT WITH CONTROLLABLE TERMINATION  
A driver circuit for a laser diode or other optical source comprises a controllable termination for a transmission line coupled between the driver circuit and the optical source, with the...
US20110199155 Controlling the Performance of a Thermionic tube  
Controlling the performance of the thermionic tube (102) having a cathode (103), a plate (104) and a grid (105) is disclosed. The tube is configured to provide amplification of an audio derived...
US20150137698 METHOD AND APPARATUS FOR INTEGRATED LIGHTING CONTROL ACCORDING TO POWER RESERVE STAGE  
Disclosed is a method and apparatus for integrally controlling lighting according to the status of power reserve stages. The apparatus for integrally controlling lighting according to power...
US20150130367 DISPLAY APPARATUS, POWER VOLTAGE GENERATING APPARATUS, AND METHOD OF GENERATING POWER VOLTAGE  
A power voltage generating apparatus supplies a power voltage to a plurality of pixel circuits of a display apparatus. The power voltage generating apparatus includes: a high voltage converter to...
US20080284351 Ignition Module for Gas Discharge Lamp  
The present invention relates to an ignition module for a gas discharge lamp, said ignition module comprising: a first module for generating a first series of pulse from a low frequency driving...
US20090284168 Recessed light ballast mount  
A lamp ballast is provided for attachment to a fluorescent lamp fixture. The ballast is adapted to a direct low profile mounting on a junction box of the lamp fixture by a varying degree of...
US20090102394 Circuit Arrangement for Controlling the Operation of an Electronic Transformer  
A circuit arrangement for controlling the operation of an electronic transformer (1) whose power supply can be lowered. The electronic transformer (1) is electrically connected to an output of a...
US20100320914 SAFE LIGHTING SYSTEM  
A lighting system comprising a light source, a fiber rope into which light emitted from the light source is coupled, and a control unit for controlling the optical power of light emitted by the...
US20080067944 Circuit structure for LCD backlight  
A circuit structure for LCD backlight is disclosed in the present invention. The circuit structure includes an inverter topology, a current balance circuit, and a plurality of loads. The current...
US20100109553 LED BULB WITH ZENER DIODE, ZENER DIODE ASSEMBLY OR RESISTOR CONNECTED IN SERIES  
An LED bulb in one embodiment includes two depending arms; a Zener diode secured to one end of one arm; an LED secured to one end of the other arm; a conductor electrically interconnecting the...
US20080309252 Controller of Light Dimmig and Overload Protection  
The dimmer controller cart be installed within the structure of a light fixture or freestanding lamp, alternatively the circuit can be installed in a cord. The circuit includes a power shaping...
US20090021182 LED DRIVER CIRCUIT  
The present invention relates to a low cost LED driver module comprising a switched-mode power supply (smps) having down-converting characteristics (11) which is controlled by a comparator (31)....
US20150102746 LIGHTING DEVICE CONTROL USING VARIABLE INDUCTOR  
Various techniques are provided for implementing a variable control for a lighting device, such as a flashlight, that uses a variable inductor. The lighting device may include a tail cap, a...
US20090085495 LIGHT SOURCE AND PROJECTOR  
A light source includes an discharge lamp including a first electrode and a second electrode emitting light by discharge between them, a drive unit performing a steady operation which supplies...
US20120112657 LOW COST POWER SUPPLY CIRCUIT AND METHOD  
A power supply circuit has an LLC converter stage for converting a DC voltage input into a DC voltage output, and at least one hysteretic converter stage. Each hysteretic converter stage has a DC...
US20110285312 Integrated Three Dimensional Inductor and Method of Manufacturing Same  
An integrated 3-dimensional inductor device is provided. The inductor device includes a substrate having an electrical trace and a 3-dimensional inductor attached to the substrate. The inductor...
US20090108769 LIGHTING DEVICE AND ILLUMINATION APPARATUS  
The present invention provides a lighting device capable of controlling finely modulated light control without stopping other processing regardless of an operation clock. The light modulation...
US20110127926 Discharge lamp light apparatus  
A discharge lamp lighting apparatus for lighting a discharge lamp where a voltage generated in a secondary side winding can be superimposed on an output voltage of an inverter and is impressed...
US20080297739 PROJECTOR AND DRIVING METHOD OF LIGHT SOURCE FOR PROJECTOR  
A projector includes an discharge lamp which has a first electrode and a second electrode and emits light by generating discharge between the first and second electrodes, and a driving system...
US20090225021 METHOD OF DRIVING A LIGHT SOURCE, LIGHT SOURCE DEVICE FOR PERFORMING THE SAME, AND DISPLAY DEVICE HAVING THE LIGHT SOURCE DEVICE  
A method of driving light sources controls amounts of light from light-emitting diode (LED) strings based on pulse signals to operate the LED strings connected in parallel. Voltages are...
US20100066264 PORTABLE TERMINAL, METHOD OF DRIVING CONTROL OF LIGHT EMITTING BODY USED FOR THE SAME AND PROGRAM THEREOF  
Windows 491, 493 each having LED 481, 482 near the window and a window 492 having no LED are disposed alternately and in a row. Pulse width of voltage pulse applied on LEDs 481, 482 is controlled...
US20120146537 VARIABLE-INDUCTOR ELECTRONIC BALLASTS  
A variable-inductor electronic ballast includes a generic ballast and a variable-inductor controller. The variable-inductor controller includes either an additive-inductor or a...
US20080136351 BACK LIGHT UNIT AND TRANSFORMER  
A back light unit comprising a light source and a transformer is provided. The transformer has a first side and a second side. The first side is used to receive a pulse width modulation (PWM)...
US20100213870 DIMMER JITTER CORRECTION  
A controller and a method for controlling lamp drivers such as e.g. LED drivers for lamps having a fast response behavior such as e.g. LED lamps are proposed. They enable to substantially reduce...