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| Application No. | Application Title | Issue Date |
| 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 an... | 02/09/2012 |
| 20120025737 | CURRENT MIRROR CIRCUIT A current mirror circuit duplicates an input current that flows through an input terminal, and outputs an output current via an output terminal. A first transistor, a second transistor, and a diode are sequentially arranged in series between a power supply terminal to w... | 02/02/2012 |
| 20120026761 | ADAPTIVE CURRENT LIMITER AND DIMMER SYSTEM INCLUDING THE SAME In an embodiment, an adaptive current limiter includes a sense element, a current pass element, and a controller. The sense element includes a first sense terminal coupled to a power supply terminal and a second sense terminal. The sense element generates a sense voltag... | 02/02/2012 |
| 20120025736 | INTEGRATED CIRCUIT SWITCHING POWER SUPPLY CONTROLLER WITH SELECTABLE BUCK MODE OPERATION An integrated circuit (IC) controller for a switching power supply has a selectable operating mode for supporting multiple switching power supply topologies. The IC controls current by controlling a cycle rate of the switching power supply to provide a constant or varia... | 02/02/2012 |
| 20120019169 | DIMMABLE AMALGAM LAMP AND METHOD FOR OPERATING THE AMALGAM LAMP WHILE DIMMED A dimmable amalgam lamp is provided having a quartz glass tube enclosing a discharge chamber comprising a filling gas, and closed by pinching at both ends thereof, through which at least one current feedthrough is fed through one coil-shaped electrode each in the discha... | 01/26/2012 |
| 20120019167 | Backlight Control Circuit and Method Thereof A backlight control circuit and method thereof are provided to control the backlight of a backlight module so as to enhance the dynamic contrast ratio and save power. The backlight control circuit includes an average luminance detection circuit, a luminance distribution... | 01/26/2012 |
| 20120019168 | ILLUMINATION CONTROL SYSTEM AND METHOD FOR CONTROLLING ILLUMINATION According to one embodiment, an illumination control system includes a motion sensor and a central management server. The motion sensor acquires position information and action information of a person. The central management server holds holding position information of ... | 01/26/2012 |
| 20120013270 | LIGHT-EMITTING DEVICE AND METHOD A light-emitting method is provided. The light-emitting method is applied in a light-emitting device. The light-emitting device includes an emitting member to emit light. The light-emitting method includes detecting an air pressure of the light-emitting device and contr... | 01/19/2012 |
| 20120013269 | 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 generate a driving voltage for driving an LED lamp, comprising: a waveform... | 01/19/2012 |
| 20120013256 | Gravity Controlled Lighting device A lighting device having a housing incorporating an electrical circuit, a light source and a source of power with a gravity controller. The gravity controller regulates the power applied to the light source in response to the relationship between the position angle and ... | 01/19/2012 |
| 20120007510 | CONTROL MODULE WITH POWER SUPPLY DETECTION AND LAMP UTILIZING THE SAME A lamp with power supply detection includes a power supply unit, a control module and a lighting module. The power supply unit provides a direct current (DC) voltage. The control module is coupled to the power supply unit, receives and stores the DC power, and generates... | 01/12/2012 |
| 20120007524 | Terminal Device and Computer-Readable Storage Medium A terminal apparatus and a computer-readable storage medium capable of achieving reduction of power consumption by appropriately controlling lighting of a display unit are provided. A CPU lights or extinguishes a display unit after the end ... | 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 ou... | 01/12/2012 |
| 20120004509 | Drive Circuit for Light Emitting Diode A drive circuit for a light emitting diode, and applications thereof, are disclosed. In one example, the drive circuit includes an input voltage and a ground, and a current control block including a voltage supply connection, a ground connection, a first voltage sense c... | 01/05/2012 |
| 20120001571 | BACKLIGHT MODULE DETECTING ABNORMAL LAMP TUBES AND AN LCD THEREOF A backlight module detecting abnormal lamp tubes and an LCD employing such a backlight module are proposed. The LCD includes a voltage calculator for detecting voltage applied on ends of a lamp tube to monitor the lamp tube. Once the lamp tube becomes abnormal, the volt... | 01/05/2012 |
| 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 whil... | 01/05/2012 |
| 20110316449 | LOAD DRIVING CIRCUIT A main transformer is arranged such that a load is connected to its secondary winding side. A first error amplifier generates a feedback signal that corresponds to the difference between a detection signal which indicates the electrical state of the load and a predeterm... | 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 r... | 12/29/2011 |
| 20110309756 | Road Lamp Dimming Control Device A road lamp dimming control device comprises a signal processor, a power supplier, a driver and a light emitting module. The single processor is used for receiving an inputted electric current and a control signal. The control signal is decoded into a dimming control si... | 12/22/2011 |
| 20110309770 | LED LAMP HEAD WITH VARIABLE BRIGHTNESS A lamp head is configured to be electrically coupled solely to a power-supply element and a return element. A power voltage carried by the power-supply element is regulated by a control element. The lamp includes at least one LED configured to emit light, and a first ci... | 12/22/2011 |
| 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 sur... | 12/22/2011 |
| 20110309771 | PROPORTIONAL REMOTE CONTROL Disclosed is a proportional controller that utilizes a deflected metal cantilever that provides a progressive change in capacitance for a given deflection that is used to generate a proportional control signal. In addition, a efficient step-up converter 1500 is d... | 12/22/2011 |
| 20110304279 | OPEN CIRCUIT VOLTAGE CLAMP FOR ELECTRONIC HID BALLAST An electronic high intensity discharge (HID) ballast (102) is presented which includes a dual mode buck converter (120) providing a DC output voltage (122) to drive an inverter (140), where the buck converter (120) regulates the DC out... | 12/15/2011 |
| 20110304278 | Constant Power Limiter and Illumination Device Having Same A constant power limiter includes a control circuit and a power source circuit thereof, and the control circuit includes a voltage detection circuit configured for detecting a voltage of power source; a current detection circuit configured for detecting a load current; ... | 12/15/2011 |
| 20110304280 | LIPS BACKLIGHT CONTROL ARCHITECTURE WITH LOW COST DEAD TIME TRANSFER A driving circuitry arranged to pass a dead time over an isolation transformer, the driving circuitry constituted of: a three-state driver arranged to output a first signal, the first signal selectively at one of two complementary voltage levels and a high impedance sta... | 12/15/2011 |
| 20110298396 | Light Emitting Device and Electronic Equipment Using the Same A light emitting device is provided which is capable of displaying in desired colors stably by controlling a change in luminance of OLED when an organic light emitting layer is degraded or there is a change in temperature of the surroundings. A reference value for the a... | 12/08/2011 |
| 20110298395 | CONTROL CIRCUIT OF LIGHT-EMITTING ELEMENT A control circuit of a light-emitting element comprises a rectifying unit which full-wave rectifies an alternating current power supply, a clock generator which generates and outputs a clock signal (CLK), a first comparator which compares a comparison voltage (CS) corre... | 12/08/2011 |
| 20110291592 | Dimmer Conduction Angle Detection Circuit and System Incorporating the Same A conduction angle detection circuit, and systems and methods incorporating the same, is disclosed. The circuit includes a comparator having a first input and a second input, and configured to provide a pulse-width modulated output in response to comparison of signals a... | 12/01/2011 |
| 20110291570 | Energy-Efficient Luminaire with Automatic Multilevel Illumination One embodiment of an energy-efficient light fixture with automatic multilevel illumination comprising a housing that contains multiple ballasts and multiple lamps at least one of which is controlled by an occupancy sensor. At least one of the lamps remains on constantly... | 12/01/2011 |
| 20110291593 | Fast Reignition of a High Intensity Discharge Lamp Embodiments of the present invention provide for the rapid reignition of a high intensity discharge lamp. In one embodiment of the invention, an apparatus for a fast reigntion of a high intensity discharge lamp is disclosed. The apparatus is comprised of a ballast opera... | 12/01/2011 |
| 20110285321 | LIGHT SOURCE DRIVING CIRCUIT WITH LOW OPERATING OUTPUT VOLTAGE A driving circuit for regulating current in a light source using a tracking component. The tracking component detects the voltage difference between an input node in the input stage and an output node in the output stage. The input stage is connected to a current source... | 11/24/2011 |
| 20110285323 | DRIVING CIRCUIT WITH DIMMING CONTROLLER FOR DRIVING LIGHT SOURCES A dimming controller for controlling dimming of a light-emitting diode (LED) light source includes a monitoring terminal and a control terminal. The monitoring terminal receives a switch monitoring signal indicative of an operation of a power switch which transfers powe... | 11/24/2011 |
| 20110285322 | GAS-DISCHARGE LAMP CONTROLLER UTILIZING A NOVEL PREHEATING PHASE CONTROL MECHANISM A gas-discharge lamp controller utilizing a novel preheating phase control mechanism, having: a supply voltage tracking reference voltages generator, biased between a supply voltage and a reference ground, for generating a first reference voltage which is proportional t... | 11/24/2011 |
| 20110279062 | DC POWER SUPPLY UNIT AND LED LIGHTING APPARATUS In one embodiment, a DC power supply unit includes a DC power supply source; a load circuit connected to an output end of the DC power supply source; a load state detection device to detect a load voltage or an electric quantity corresponding to the load voltage; and a ... | 11/17/2011 |
| 20110279061 | FEEDBACK CONTROL CIRCUIT AND POWER CONVERTING CIRCUIT An exemplary embodiment of the invention provides a set of an initial value of an error amplifying signal in the feedback control circuit for feedback control, so as to reduce the time and the amplitude of oscillation of the error amplifying signal. Accordingly, a feedb... | 11/17/2011 |
| 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... | 11/10/2011 |
| 20110273113 | Method and Device for Driving Light-Emitting Diode A method for driving a light-emitting diode based upon an AC input voltage includes receiving and full-wave rectifying the AC input voltage to generate a full-wave rectified input voltage, generating a pulse width modulation signal according to the full-wave rectified i... | 11/10/2011 |
| 20110267375 | LOAD-AWARE COMPENSATION IN LIGHT-EMITTING-DIODE BACKLIGHT ILLUMINATION SYSTEMS System(s) and method(s) are provided for power management in an electronic display via compensation of a power source of a light-emitting-diode (LED) backlighting system. A compensation feedback loop includes a load-aware controller that receives the load condition from... | 11/03/2011 |
| 20110266977 | 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 de... | 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... | 11/03/2011 |
