Match Document Document Title
US20060125420 Candle emulation device  
According to one embodiment of the invention, a candle emulation device comprises a light source, a light source controller and an optional fragrance-release mechanism. The light source controller...
US20090140663 DISPLAY SYSTEM CAPABLE OF AUTO-ADJUSTING BRIGHTNESS AND METHOD FOR AUTO-ADJUSTING BRIGHTNESS THEREOF  
A display system includes a display panel, a solar battery, an electric current measuring module, a memory, and a brightness adjusting module. The solar battery is for converting light energy into...
US20120049757 BALLAST CONTROL CIRCUIT AND BALLAST CONTROL METHOD FOR GAS DISCHARGE LAMP  
The invention proposes a ballast control circuit and ballast control method for gas discharge lamp. The ballast control circuit and control method of the invention is advantageous by allowing the...
US20150181676 Technique for controlling order of selection  
A technique for controlling order of selecting elements from an ordered set of N elements, the technique provides applying to the ordered set a mathematical function P converting the order, in...
US20150061520 lamp device and a method for operating a lamp device  
According to one embodiment there is provided a lamp device (1) having a lighting module (3) and two pairs of external connection pins (5aa, 5ab, 5ba, 5bb) for connecting the lamp device to a...
US20120019162 MODULAR WIRELESS LIGHTING CONTROL SYSTEM USING A COMMON BALLAST CONTROL INTERFACE  
Disclosed is a modular lighting system that incorporates wireless technology and a standard interface. The lighting system may be installed in new buildings or retrofitted into existing buildings...
US20100039045 LED Module and Method for Operating at Least one LED  
An LED module (10) for operating at least one LED (18) comprising an input (E1, E2) adapted for coupling to a DC voltage source (UE); an output (A1, A2) adapted for coupling to the at least one...
US20150084540 LED Flashlight  
A lighting device with improved optical performance and efficiency is provided. The lighting device includes a source of energy, a light source, a reflector and a holder. The reflector has a first...
US20050237010 Architecture of power supply system for LCD apparatus  
The proposed architecture includes a Dual Boost PFC circuit for receiving the AC input voltage and generating the DC bus voltage, at least one inverter coupled to the Dual Boost PFC circuit for...
US20100060188 LIGHTING CONTROL CIRCUIT  
The present invention is directed to an LED light system that comprises a control circuit that operates on a pair of 1.5 volt batteries but which generates an operational voltage in excess of 3.0...
US20110140632 MR16 Type High Power Led Lamp  
The invention refers to a MR16 high power LED lamp, particularly a MR16 high power LED lamp which can adapt to working frequency alternating current or high frequency alternating current with...
US20080068002 Specific phase position detection  
The specific phase position detection circuit detects first and second temporal positions which have respective desired phase offsets from an upper peak position and an lower peak position of an...
US20110285309 SOLID STATE LIGHTING DEVICES UTILIZING MEMRISTORS  
LED chip circuits, solid state light engines and SSL luminaires are disclosed that utilize memristors to vary LED chip emission. In different embodiments the resistance of said memristor can be...
US20120098306 Lighted Furniture  
An article of furniture including one or more decorative light members placed along the bottom or other portions of the article furniture is provided. In some embodiments, the article of furniture...
US20140070723 LED Backlight Driving Circuit and LED Backlight Driving Method  
The present invention provides an LED backlight driving circuit and an LED backlight driving method. The circuit includes an isolation MOS transistor, a dimming MOS transistor connected in...
US20140145642 SYSTEM AND METHOD FOR IGNITION AND OPERATION OF A HIGH INTENSITY DISCHARGE LAMP  
A method for ignition of a ceramic high intensity discharge (HID) lamp. The method includes applying to the electrodes multiple pre-ignition voltage pulses of sufficiently short duration to avoid...
US20130342130 LIGHTING SYSTEM WITH LIGHTING DIMMER OUTPUT MAPPING  
A system and method map dimming levels of a lighting dimmer to light source control signals using a predetermined lighting output function. The dimmer generates a dimmer output signal value. At...
US20120306403 DRIVER CIRCUIT FOR POWERING A DC LAMP IN A NON-DC LAMP FITTING  
The invention comprises a driver circuit for adapting an LED lamp or an LED lamp array to be used in a lamp fitting for a non-LED type lamp without modification of the lamp fitting. The driver...
US20070290629 MODULAR ILLUMINATION SYSTEM  
A modular light system, the system including a distribution panel, a light emitter connected to an output end of the distribution panel, a controller connected to an input end of the distribution...
US20090021181 Led module and led lighting unit with a plurality of led modules  
In a LED module (11) with a LED array comprising a plurality of LED chips (2) and a control unit (7) for regulating the operating current of the LED chips (2), the control unit (7) is arranged on...
US20130093353 APPARATUS FOR AUTOMATICALLY CONTROLLING THE ILLUMINATION OF LED LIGHTING  
The present invention relates to an apparatus for automatically controlling illuminance, which transmits a dimming signal based on the zero-crossing of AC power using an illuminance control...
US20080278096 Configurable Ballast  
A configurable ballast (20) employs a microprocessor (30) and a lead wiring (50) operable to electrically communicate a programming signal (PS) to the microprocessor (30). The programming signal...
US20100039048 Inverter controller and system  
A driving circuit for driving loads includes a switch circuit, a transformer, a current sensing circuit, and an inverter controller. The switch circuit and the transformer are used for converting...
US20080265274 Light emitting diode element having a voltage regulating capability  
An LED element having a voltage regulating capability has a body, two pins, a resistor and a conductive sleeve. The resistor is connected to a shorter pin through the conductive sleeve, so an...
US20100315006 CIRCUIT FOR CONTROLLING A LIGHTING UNIT WITH LIGHT-EMITTING DIODES  
A circuit capable of receiving, in series with at least one light-emitting diode, a rectified A.C. voltage, comprising: a first gate turn-off thyristor connected to first and second terminals of...
US20090115344 LIGHTING APPARATUS DRIVEN BY COLOR COORDINATE SELECTION MODULE  
Provided is a lighting apparatus driven by a color coordinate selection module, which can emit color light corresponding to a chromaticity on a color coordinate, which is selected by a user. The...
US20150115831 CONVERSION CIRCUIT BETWEEN FLUORESCENT BALLAST AND LED  
Conversion circuits (1) convert first signals coming from fluorescent ballasts (101) into second signals for light circuits (2) comprising light emitting diodes to replace discharge lamps (102)....
US20140225527 CONSTANT CURRENT CONTROL CIRCUIT WITH PFC FUNCTION AND ITS PFC CIRCUIT  
A constant current control circuit with PFC function and its PFC circuit are disclosed. The PFC circuit comprises a valley-filled PFC circuit (306) and a harmonic compensation circuit (307), whose...
US20150245434 INDUCTOR CURRENT DETECTION CIRCUIT AND LED DRIVER  
The present invention pertains to an inductor current detection circuit in a switching mode power supply, and a light-emitting diode (LED) driver thereof. In one embodiment, an inductor current...
US20090195180 LED DRIVER CIRCUITS AND METHODS  
An LED driver circuit may include dimming circuitry. In particular, the LED driver circuit may include a switching converter, an LED and a switch. The LED may be electrically connected to the...
US20120187863 LIGHT SOURCE LIGHTING DEVICE AND LUMINAIRE  
A power supply circuit drives circuits having different numbers of series-connected LEDs without changing a circuit constant or a component. An LED series circuit is connected to a power converter...
US20080315787 DIMMING ALGORITHMS BASED UPON LIGHT BULB TYPE  
A lighting control circuit for dimming a light is provided with different algorithms that are utilized to dim fluorescent and incandescent lights. Some method of identifying the type of light...
US20090140666 Dimming control circuit and method for generating analog and digital signals according to one analog control signal  
The present invention discloses a dimming control circuit and a method for generating analog and digital signals according to an analog control signal. The dimming control circuit according to the...
US20050134196 Fluorescent dimming system  
The present invention discloses a dimming system for fluorescent lighting. The system includes a fluorescent tube, a ballast for the fluorescent tube and a dimmer for moving the level of light...
US20110260619 LED Dimming Driver  
Various embodiments of an LED dimming driver are disclosed herein. In some embodiments, an apparatus for dimmably driving at least one load includes a power supply having a voltage output, a...
US20100052561 METHOD FOR DRIVING AN INVERTER OF A GAS DISCHARGE SUPPLY CIRCUIT  
A method of controlling an inverter (4) of a gas discharge lamp circuit. The inverter comprises two branches, each having a first semiconductor switch (32, 36) in series with a second...
US20080315788 OLED DISPLAY WITH AGING AND EFFICIENCY COMPENSATION  
A method of compensating for changes in an OLED drive circuit, includes: providing a drive transistor; providing a first voltage source and a first switch; providing an OLED device connected to...
US20110025231 METHOD AND APPARATUS FOR RETROFITTING HID LAMPS WITH SYSTEM TO PERIODICALLY ADJUST OPERATING WATTAGE  
A method, apparatus, and system for increasing usable light from a high intensity lighting fixture to a target area without an increase in energy use. In one aspect, the circuit is retrofitted...
US20100039046 LED READING LIGHT AND METHOD FOR OPERATING AN LED READING LIGHT  
The LED reading light, in particular for a passenger transportation vehicle such as, for example, an airplane, a bus, or a ship, is provided with two power supply connections (17) for connection...
US20120049759 USER INTERFACE WITH CIRCULAR LIGHT GUIDED RING WITH ADAPTIVE APPEARANCE DEPENDING ON FUNCTION  
The present invention relates to a control device adapted to control properties of light emitted from a light source. The control device may comprise a touch-sensitive user interface adapted to...
US20100237796 POCKET TOOL WITH A LIGHT POINTER  
The invention relates to a compact light module (1), that is eye-safe as far as possible, comprising an electrical power source (2), a voltage converter (3) and a radiation source for...
US20150123567 TRANSFORMER VOLTAGE DETECTION IN DIMMABLE LIGHTING SYSTEMS  
An illumination system detects a peak value of a voltage of a transformer supplying an LED module by analyzing the current value of the voltage and an on-time of the voltage. Based on the detected...
US20130038220 METHOD OF DRIVING AN ARC-DISCHARGE LAMP  
The invention describes a method of driving an arc-discharge lamp (1), which method comprises the steps of detecting a mechanically induced fluctuation in luminous flux of the lamp (1) occurring...
US20140132179 SWITCHED MODE POWER SUPPLY  
The present application relates to switched mode power supplies and provides a method of control in which control is effected at the midpoint of the period in which the input switch is conducting.
US20090309513 METHOD OF CONTROLLING THE COLOUR OF THE LIGHT OUTPUT OF A LAMP  
The invention describes a method of controlling the colour of the light output of a lamp (1), which method comprises electronically collecting colour data pertaining to a first colour (C1) to...
US20090096384 UNIVERSAL DIMMER  
Disclosed is a universal dimmer which detects the type of load it is connected to each time the universal dimmer is activated. Information relating to the type of load connected to the universal...
US20070182344 Lamp driver providing synchronization during commutation  
A lamp driver having two independently operating half-bridges integrated as a down-converter (1) and one as an alternator (2). Ensures that current control and inversion can be performed in a...
US20120161666 LIGHT EMITTING DIODE RETROFIT SYSTEM FOR FLUORESCENT LIGHTING SYSTEMS  
An light emitting diode (LED) retrofit system for fluorescent lighting systems including a fluorescent lamp fixture is disclosed. The fluorescent lamp fixture includes a frame, an existing ballast...
US20100225243 METHOD AND SYSTEM FOR CONTROLLING POWER TO PIXELS IN AN IMAGER  
A system for controlling power applied to pixels in an imager. A first switch coupling the internal power node of the pixels to the power supply of the imager. A second switch coupling the...
US20090284167 Dual Level Power Source For Compact Florescent Bulbs  
A power supply for a compact florescent bulb has an EMC filtering circuit, a power level selection switch a controller and an output for the bulb which is the load for the power supply. The...