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| Number | Title | Issue Date |
| 8183798 | Variable light control system and method using momentary circuit interrupt An electronic circuit designed to reduce energy consumption by toggling between a plurality of conventional or electronic fluorescent lighting ballasts within a given fixture, and where said toggle circuit shall increase or decrease fixture light output levels accor... | 05/22/2012 |
| 8084963 | Management of rechargeable battery in an enclosed lighting module Embodiments of the present disclosure provide methods, systems, and apparatuses related to managing a rechargeable battery in an enclosed lighting module. Other embodiments may be described and claimed. ... | 12/27/2011 |
| 7825614 | Voltage control load center, modular voltage control transformer circuit, and method of making and using A voltage control load center (10) includes plural modular voltage control transformer circuits (20), and is connected between supply mains (22) and a load (L) including one or more high intensity discharge (HID) lamps. The lamps are started at ... | 11/02/2010 |
| RE41727 | Power driver circuit of display panel A power driver circuit for a display panel. The power driver circuit of a display panel includes a power controller, and a resident power system, which . The resident power system is coupled to an alternating power source and provides resident power for the power c... | 09/21/2010 |
| 7402961 | Circuit for illuminating multiple light emitting devices A single drive circuit is configured to drive disparate current loads of first and second combinations of compact light emitting devices with respective regulated constant currents. Standard push ON, push OFF latching switches provide independent control of the two ... | 07/22/2008 |
| 7378630 | Light emitting unit and imaging apparatus A light emitting unit which radiates auxiliary light to a subject to be imaged, said light emitting unit comprising: a plurality of light emitting elements disposed so as to have radiation areas different from each other, said ligh... | 05/27/2008 |
| 7362059 | Driving unit of fluorescent lamp and method for driving the same A fluorescent lamp driving unit includes fluorescent lamps, wherein each fluorescent lamp includes a first end and a second end opposing the first end; an inverter for driving the plurality of fluorescent lamps to emit light; and a controller for electrically connec... | 04/22/2008 |
| 7352339 | Diffuse illumination systems and methods The systems and methods disclosed herein relate to sources of diffuse illumination for providing substantially uniform illumination to a surface. The diffuse illumination arises from varying the diffusion angle of light generated by an LED system. To vary the diffus... | 04/01/2008 |
| 7327098 | LED controller and control method thereof A LED controller and a control method thereof are disclosed. The LED controller can generate a control signal to drive a LED, measure a luminous intensity value of the LED, and selectively adjust the control signal according to the measured value to dynamically adju... | 02/05/2008 |
| 7316486 | LED lighting arrangement A lighting arrangement (1) which is advantageous in particular for the interior lighting of a vehicle or aircraft. The lighting arrangement (1) includes a plurality of light emitting diodes (2a-2e, 3a-3 | 01/08/2008 |
| 7298090 | Light assembly having light changing device A light facility includes one or more batteries disposed in a housing, a processor device includes two power terminals coupled to the batteries and includes a switch terminal and a key terminal and three light terminals, a light device may be energized by the batter... | 11/20/2007 |
| 7282863 | Auxiliary quartz lamp lighting system for electronic high intensity discharge lamp ballasts A method and electronic circuit operate a quartz auxiliary lamp lighting lamp and circuit to light a quartz auxiliary lamp at 120 Vac and 50-60 Hz current connected to an electronic HID ballast operating at a frequency of 100 Hz to over 400 kHz and voltages of from ... | 10/16/2007 |
| 7253570 | Automatic momentary secondary light source assembly A secondary light assembly emits light into an area lit by a primary light source. The secondary light assembly includes a light sensor for sensing light emitted from the primary light source. A secondary light source is operatively connected to the light sensor. A ... | 08/07/2007 |
| 7250732 | High pressure discharge lamp control system and method A system for providing a controllable current to a high intensity discharge lamp is provided. The system includes a current controller that is configured to receive input power and to provide an output current waveform to the high intensity discharge lamp. This curr... | 07/31/2007 |
| 7231060 | Systems and methods of generating control signals Separating a source in a stereo signal having a left channel and a right channel includes transforming the signal into a short-time transform domain; computing a short-time similarity measure between the left channel and the right channel; classifying portions of th... | 06/12/2007 |
| 7215084 | Power control arrangement, as for a flashlight In a battery-operated apparatus comprising a load, a battery and a switch in circuit for selectively energizing the load: a comparator compares a potential produced by the battery and a reference potential for de-energizing the load when the battery potential is bel... | 05/08/2007 |
| 7211969 | Power driver circuit of display panel A power driver circuit for a display panel. The power driver circuit includes a power controller, and a resident power system, which is coupled to an alternating power source and provides resident power for the power controller. When receiving an external on/off sig... | 05/01/2007 |
| 7202613 | Controlled lighting methods and apparatus Described herein are lighting units of a variety of types and configurations, including linear lighting units suitable for lighting large spaces, such as building exteriors and interiors. Also provided herein are methods and systems for powering lighting units, cont... | 04/10/2007 |
| 7165876 | Illuminating device utilizing light-emitting diode array A nightlight including a light bank having light-emitting diodes (LEDs) disposed in an array. The amount of light emitted from the light bank can be varied by engaging a switch that selects between a number of electrical pathways. The device includes a photosensitiv... | 01/23/2007 |
| 7122976 | Light management system device and method A lighting control system is disclosed. The lighting control system is electrically coupled to a load circuit for controlling indoor and/or outdoor lighting. The lighting control system includes a control module with a night light for providing low-level night light... | 10/17/2006 |
| 7038402 | Combined exponential/linear RGB LED I-sink digital-to-analog converter Methods and systems to achieve linear and exponential control over a current to drive color LEDs have been achieved. Current digital-to-analog converters (IDAC) comprising each an exponential current digital-to analog converter and a linear IDAC, being cascaded to e... | 05/02/2006 |
| 7038399 | Methods and apparatus for providing power to lighting devices Methods and apparatus for providing power to devices via an A.C. power source, and for facilitating the use of LED-based light sources on A.C. power circuits that provide signals other than standard line voltages. In one example, LED-based light sources may be coupl... | 05/02/2006 |
| 7038398 | Kinetic illumination system and methods The present invention relates to methods of creating eye-catching displays by taking advantage of color-changing illumination provided by LED systems disclosed herein. Displays can be made to appear to change color or to move simply by changing the color of the ligh... | 05/02/2006 |
| 6949893 | Television receiver and cold-cathode tube dimmer In a cold-cathode dimmer, a current detector includes a LPF for removing the frequency component of a lighting/driving signal for a lighting driver from the output of a diode for rectifying the voltage across a current detecting resistor and passing the frequency co... | 09/27/2005 |
| 6949885 | Discharge lamp lighting device and lighting apparatus A discharge lamp lighting device includes a discharge lamp that is lighted through an L-C resonance induced by an oscillation output of an inverter circuit. An on-off operation of switching elements of the inverter circuit is controlled by a control IC which include... | 09/27/2005 |
| 6946975 | Uniformly lighted airfield guidance sign An airfield guidance sign. The sign 100 (of FIG. 1a) includes a case (102), a multi-element light source (114) attached to the case (102) for providing light interior to the case (102), a light dispersion subsystem of the ca... | 09/20/2005 |
| 6911789 | Power supply for a hot-filament cathode In accordance with one embodiment of the present invention, there is provided a switch-mode power supply to generate the heating current for a hot-filament electron-emitting cathode. The power supply directly couples, without an output transformer, the output from a... | 06/28/2005 |
| 6906472 | Articles with flashing lights Illuminating devices may be added to clothing and accessories worn by persons. Articles to which the illuminating devices may be added include footwear, hair-control articles, belts, suspenders, backpacks, purses, book-bags, vests and the like. The illuminating devi... | 06/14/2005 |
| 6876159 | Electronic ballast system for emergency lighting applications An electronic ballast system with emergency lighting features is presented. Especially, the electronic ballast system is relative to a single-stage converter configuration. The electronic ballast system serves as a regular ballast, a regular/emergency ballast, a bat... | 04/05/2005 |
| 6867558 | Method and apparatus for networked lighting system control A method and apparatus are described for a networked lighting system that may be controlled either remotely or locally by a power line communication (PLC) link. The components of the system, addressable lamp ballasts and addressable wall switches, replace their conv... | 03/15/2005 |
| 6858996 | Driver IC for use with simple microcontrol A driver circuit for driving a switching circuit driving a load, e.g., a gas discharge lamp, the drive circuit comprising an input trigger circuit receiving a pulsed input signal for controlling the generation of two drive signals, a first drive signal driving a hig... | 02/22/2005 |
| 6822626 | Design, fabrication, testing, and conditioning of micro-components for use in a light-emitting panel A method of forming micro-components is disclosed. The method includes pretesting and conditioning of the micro-components. The micro-components that fail testing or conditioning are discarded, and those remaining are assembled into a panel. ... | 11/23/2004 |
| 6819060 | Power line monitor and interrupt arrangement for averting premature lamp mortality in low voltage conditions A system and method for mitigating the effects of low power line voltage that can otherwise cause premature lamp mortality. A monitor circuit is provided for monitoring power characteristics relating to UV and/or fluorescent lamp operation, such as the lamp supply v... | 11/16/2004 |
| 6801003 | Systems and methods for synchronizing lighting effects In one example, a lighting apparatus comprises a processor wherein the processor is configured to control a color-changing lighting effect generated by the lighting apparatus; wherein the processor is further configured to monitor an operating power source; and wher... | 10/05/2004 |
| 6795044 | Plasma display panel and driving method thereof Scanning electrodes are shared between adjacent display lines. Sustaining electrodes are disposed between the scanning electrodes by two. The sustaining electrodes form display lines by gaps with adjacent scanning electrodes. The sustaining electrodes are separated ... | 09/21/2004 |
| 6768273 | Dynamo control circuit for a bicycle A bicycle charge control circuit for receiving electric power from a bicycle dynamo and for controlling the operation of a lamp and a charging circuit includes a lamp switch for selectively providing power from the dynamo to the lamp, a battery charged by the dynamo... | 07/27/2004 |
| 6278420 | Plasma display panel and driving method thereof A plasma display panel, one of flat panel display device, having improved electrical connections and the driving method thereof are disclosed. The plasma display panel and the driving method thereof have the advantage of diminishing the number of the high... | 08/21/2001 |
| 6181074 | Operating circuit for discharge lamps with switchable operating states A circuit for operating a discharge lamp wherein a variable representing an operating state of the lamp is stored in an operating state storage device. A changeover device switches over between a plurality of operating states of the lamp. The operating st... | 01/30/2001 |
| 6107758 | Operation circuit in particular for discharge lamps using discrete time definition values to control operation state switching A circuit is described with which an operation circuit for a discharge lamp can be switched between operation states with different lamp currents by hort interruptions of the power supply. Long interruptions than a certain time threshold result in basic s... | 08/22/2000 |
| 6072286 | Auxiliary lighting control circuit and method for a HID lamp lighting system An auxiliary lighting control circuit and method for a lighting system having a HID lamp as the primary light source and an auxiliary light source for providing light when the HID lamp is extinguished or below full brightness but power remains available t... | 06/06/2000 |
