Entries |
Document | Title | Date |
20080224619 | AUXILIARY POWER SUPPLY FOR LIGHTING BALLASTS - Auxiliary power is provided on a lighting ballast by a charge pump circuit. A direct current power supply circuit in the ballast outputs auxiliary power for operation of loads other than the lighting load of the ballast. | 09-18-2008 |
20090058308 | APPARATUS AND METHOD FOR LIGHTING DIELECTRIC BARRIER DISCHARGE LAMP - A pair of internal electrodes are disposed at both ends of a lamp. A first voltage including a positive DC voltage superimposed on a substantial rectangular waveform voltage is applied to one of the internal electrodes. A second voltage including a negative DC voltage superimposed on the substantial rectangular waveform voltage is applied to the other internal electrode. The dark portion occurring substantially at the center in the longitudinal direction of the lamp becomes invisible, so that the brightness distribution is improved. | 03-05-2009 |
20090102388 | PROJECTOR AND LIGHT SOURCE ASSEMBLY EMPLOYED IN SAME - A light source assembly employed in a projector includes a light source, a power device, a light energy storage device, and a selection switch. The light source is configured for providing light beams for the projector. The selection switch is electrically connected to the light source, the light energy storage device and the power device and is configured for selecting one of the light energy storage device and the power device to provide power for the light source. The light energy storage device can absorb heat from the light source and convert the heat into electricity. Therefore, energy is saved and heat produced by the light source is reduced via the light energy storage device compared to the conventional light source assembly. | 04-23-2009 |
20090160345 | UV LAMP SYSTEM AND ASSOCIATED METHOD WITH IMPROVED MAGNETRON CONTROL - An ultraviolet lamp system for irradiating a substrate includes a magnetron and a memory physically attached to the magnetron. An electrodeless lamp is configured to emit ultraviolet light when excited by microwave energy generated from the magnetron. Main control circuitry is operable to read and write operational data associated with the magnetron to the memory. The ultraviolet lamp system is operated by generating microwave energy from the magnetron. A plasma within an electrodeless lamp is excited with the microwave energy to emit ultraviolet light. Operational data associated with the magnetron is tracked and written to the memory associated with the magnetron. | 06-25-2009 |
20090289558 | DRIVE CIRCUIT OF FLUORESCENT DISPLAY - A drive circuit for a fluorescent display that can prevent generation of reactive power in a Zener diode used to generate a cutoff bias voltage. In one embodiment, the drive circuit operates as a single ended primary inductor converter (SEPIC) circuit and includes an input side closed circuit, an output side closed circuit, and a coupling capacitor connecting the two closed circuits. The input side closed circuit includes an input power source, a first inductor and a switching element. The output side closed circuit includes a second inductor, a diode and a second capacitor. A filament of the fluorescent display is connected to the second capacitor. One end of a Zener diode is connected to a negative potential side of the filament and the other end of the Zener diode is connected to an input power source. | 11-26-2009 |
20090309502 | CONTROL CIRCUIT AND METHOD FOR CONTROLLING LEDs - A control circuit for control of light-emitting diodes has a first LED string ( | 12-17-2009 |
20100084981 | Intrinsically Safe Flashlight - A lighting device ( | 04-08-2010 |
20100102731 | Current regulator and method for efficiency improvement of a LED display system - For efficiency improvement of a LED display system including a charge pump and a LED connected to either the voltage input terminal or the voltage output terminal of the charge pump, either one or both of two current regulators are enabled according to a voltage detected from the LED, for establishing a driving current for the LED. When the detected voltage is higher than a threshold, the first one of the current sources is enabled sole. When the detected voltage is lower than the threshold, the second one of the current sources is enabled sole, or both the current sources are enabled, or the current sources are alternatively enabled. | 04-29-2010 |
20100253232 | DIMMABLE LIGHT GENERATING DEVICE - A compact gas discharge lamp ( | 10-07-2010 |
20100270934 | CIRCUIT ASSEMBLY AND METHOD FOR OPERATING A HIGH PRESSURE DISCHARGE LAMP - A circuit arrangement for operating a high-pressure discharge lamp with an operating circuit for the high-pressure discharge lamp with an input for receiving a switch-on/switch-off signal for the high-pressure discharge lamp and at least one output for providing an operating signal to the high-pressure discharge lamp, wherein the operating circuit is designed to reduce the power of the operating signal provided at the at least one output once a switch-off signal has been received at its input, wherein the operating circuit furthermore designed to provide the operating signal as an AC signal above a predeterminable power threshold value and as a quasi DC signal below the predeterminable power threshold value. | 10-28-2010 |
20100283395 | MULTI-FEED RF DISTRIBUTION SYSTEMS AND METHODS - Improved power distribution architectures for the uniform delivery of single frequency RF power to plasma chambers are disclosed. The architectures include feeding into multiple points across a single large-area electrode, multiple electrodes driving a common plasma discharge as well as multiple coils driving a common plasma discharge. The time-averaged electromagnetic field distribution may be controlled using an array of generator and match (delivery) systems, one of which may be capable of absorbing net power and presenting controlled impedance to the plasma load. In variations, an M+N port network (with M the number of generators and N the number of feed points on the electrode) may be implemented to level the power required from each generator while maintaining a desired field strength distribution. | 11-11-2010 |
20110012518 | LANTERN WITH REMOVABLE LIGHTS - A lantern having a plurality of removable area lights. Each area light includes a separate power source capable of powering the area light. Each area light is separately selectively illuminable by activating a switch on the area light. The lantern includes a docking station having a docking station power source capable of simultaneously powering all area lights attached to the docking station simultaneously or any subset of the area lights attached to the docking station. | 01-20-2011 |
20110260630 | ORGANIC LIGHT-EMITTING DIODE DISPLAY - An OLED display includes an OLED panel, two conducting wires and a power supply. A display region of the OLED panel is divided into two sub-display regions. The two conducting wires are both disposed on the panel and out of the display region, and first terminals of the two conducting wires are electrically coupled to pixels in the first sub-display region and the second sub-display region respectively. The length of a conducting wire is longer than that of another conducting wire so that the resistance of the conducting wire is larger than that of the said another conducting wire. The power supply provides a relatively high voltage and a relatively low voltage to the second terminals of the relatively long conducting wire and the relatively short conducting wire respectively, so that the voltages of the first terminals of the two conducting wires are substantially the same. | 10-27-2011 |
20110285297 | DRIVING CIRCUIT USED FOR CURRENT-DRIVEN DEVICE AND LIGHT EMITTING DEVICE - A driving circuit is adapted to drive a current-driven device. The driving circuit includes a first power supply circuit and a second power supply circuit. The first power supply circuit is for supplying a first positive voltage to a first terminal of the current-driven device. The second power supply circuit is for enabling a current flowing along a first current flow direction in a first time period and thereby a second terminal of the current-driven device is given a second positive voltage. The second power supply circuit further is for enabling a current from the current-driven device flowing out of the second power supply circuit along a second current flow direction. The first current flow direction and the second current flow direction are different directions in the second power supply circuit. Moreover, a light emitting device using the above-mentioned driving circuit also is provided. | 11-24-2011 |
20120086346 | CLOCKED INVERTER, NAND, NOR AND SHIFT REGISTER - In a display device including a substrate, a pixel portion, and a driver circuit having first to ninth transistors and first and second inverters, the various transistors are configured such that one of a source and a drain of the fifth transistor is electrically connected to a gate of the first transistor. In embodiments, the electrical connection may be a direct connection. Additionally, a switch may be provided that is directly connected to an output terminal of the second inverter. | 04-12-2012 |
20120223647 | APPARATUSES AND METHODS FOR REDUCING POWER IN DRIVING DISPLAY PANELS - Energy sharing circuits and related methods are disclosed herein. A high voltage can be selectively coupled to a first source line and a low voltage can be selectively coupled to a second source line during a first time period. During a subsequent time period, a first coupling switch is activated to inductively couple the first source line to the second source line and diode block the second source line from the first source line. During a subsequent time period, the low voltage is selectively coupled to the first source line and the high voltage is selectively coupled to the second source line. During a subsequent time period, a second coupling switch is activated to inductively couple the second source line to the first source line and diode block the first source line from the second source line. | 09-06-2012 |
20120248993 | Method and Apparatus of Converting Output of Triac Dimmer to Control Operations of LED Lighting - Various embodiments of the present disclosure pertain to converting output of a triode-for-alternating-current (TRIAC) dimmer to adjust lighting of one or more light-emitting diodes (LEDs). In one aspect, a method may receive a user-adjustable first signal from a dimmer, the first signal having an alternating current (AC) parameter that is adjustable by a user input to the dimmer; convert the first signal to a second signal that has a direct current (DC) parameter; and control operations of a load based at least in part on the second signal. | 10-04-2012 |
20120274223 | ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE - The present invention overcomes image defects such as the brightness inclination or smears by reducing the line resistance of a power source bus line which supplies electricity to organic EL elements. A plurality of pixels which are arranged in a matrix array is connected to power source lines, and the plurality of power source lines are connected to a power source bus line. Both ends of the power source bus line are connected to a power source part via a FPC. By supplying electricity to both ends of the power source bus line from the power source part, the line resistance of the power source bus line can be reduced. | 11-01-2012 |
20130002148 | LIGHT EMITTING ELEMENTS, LIGHT EMITTING DEVICES INCLUDING LIGHT EMITTING ELEMENTS AND METHODS OF MANUFACTURING SUCH LIGHT EMITTING ELEMENTS AND/OR DEVICE - An emitting device includes a first electrode on a base substrate, a second electrode on the base substrate, a third electrode on the base substrate, an emitting structure on and/or at a same level as the first electrode, a first pattern on the base substrate being electrically connected to the first electrode, and a plurality of second patterns on the base substrate, wherein at least one of the second patterns is arranged on a first side of the first pattern and is electrically connected to the second electrode and at least another one of the second patterns is arranged on a second side of the first pattern and is electrically connected to the third electrode, the first side opposing the second side. | 01-03-2013 |
20130026929 | ELECTRO-OPTICAL DEVICE, DRIVING METHOD OF ELECTRO-OPTICAL DEVICE, AND ELECTRONIC APPARATUS - A pixel circuit includes a driving transistor, a switching transistor, and a light emitting element, and the light emitting elements are formed on a semiconductor substrate. A first substrate potential is supplied to the switching transistor, and a second substrate potential, different from the first substrate potential, is supplied to the driving transistor. | 01-31-2013 |
20130057160 | LED Device with Power Removal Detection and Method for Using the Same - An LED lamp is placed in service on an automotive vehicle to enhance nighttime visual ability or anywhere where increased lighting is needed. The LED lamp utilizes a multi-stage power and control design, where the LED drive current is managed by an LED constant current controller that is coupled to a microprocessor that commands the intensity value of an LED array. The microprocessor manages the light intensity of the LED array using well known pulse-width modulation control methods. The microprocessor measures the voltage of the DC power source and to detect when DC power is removed. Once this detection has occurred, the microprocessor signals the LED current controller to change the current operational mode being delivered to the LED array to the next available operational mode, or alternatively, to the next appropriate operational mode to be used as determined by software stored within the microprocessor. | 03-07-2013 |
20130229117 | DISPLAY DEVICE AND ELECTRONIC DEVICE - A display device capable of displaying a picture of vivid colors maintaining a good balance of colors and a good balance of light-emitting brightnesses of the EL elements. The widths of the detour wirings supplying current to the power source feed lines are increased for those EL elements into which a current of a large density flows. This constitution decreases the wiring resistances of the detour wirings, decreases the potential drop through the detour wirings, and suppresses the amount of electric power consumed by the detour wirings. | 09-05-2013 |
20130249412 | LIGHTING CIRCUIT AND LUMINAIRE - According to one embodiment, a lighting circuit includes a first power supply circuit, a first detecting circuit, a first control circuit, and a first protecting circuit. The first power supply circuit is supplied with power from a first power supply and outputs a direct current flowing in a first direction. The first detecting circuit detects a first detection value of an electric current flowing between the first power supply circuit and an output terminal. The first control circuit compares a first detection value detected by the first detecting circuit with a reference value and controls the first power supply circuit. The first protecting circuit is connected to the first detecting circuit and reduces an absolute value of the first detection value if an electric current flows in a direction opposite to the first direction. | 09-26-2013 |
20130285561 | ELECTRO-OPTIC DEVICE, METHOD OF DRIVING ELECTRO-OPTIC DEVICE, AND ELECTRONIC APPARATUS - Provided is an electro-optic device including: a first pixel circuit that is provided corresponding to a position where one scanning line and a first data line are intersect with each other; a second pixel circuit that is provided corresponding to a position where the one scanning line and a second data line are intersect with each other; a first level shift unit circuit that shifts electric potential of a first data signal so as to compress electric potential amplitude of the first data signal with a first compression rate, and supplies the signal to the first data line; and a second level shift unit circuit that shifts electric potential of a second data signal so as to compress electric potential amplitude of the second data signal with a second compression rate different from the first compression rate, and supplies the signal to the second data line. | 10-31-2013 |
20140001965 | SEMICONDUCTOR CIRCUIT, DRIVING CIRCUIT OF ELECTRO-OPTICAL DEVICE, AND ELECTRONIC APPARATUS | 01-02-2014 |
20140091716 | FIELD EMISSION DEVICE - A field emission device is configured as a heat engine. | 04-03-2014 |
20140111099 | ARRAY SUBSTRATE, LCD DEVICE AND DRIVING METHOD - In an embodiments of the present invention, since two pixel electrodes are arranged in the pixel unit and each of the pixel electrodes is respectively controlled by a corresponding TFT, the rotation direction of the liquid crystal molecules may be controlled by the voltage difference between the two pixel electrodes, while the voltage on the pixel electrodes of other pixel units in the array substrate is not affected, so that the greenish phenomenon can be avoided. Furthermore, since the two TFTs for controlling the two pixel electrodes respectively may have same parasitic capacitor when the pixel unit is turned off, the voltage difference between the two pixel electrodes is kept unchanged, and thus the occurrence of the image flickering can be avoided. | 04-24-2014 |
20140132160 | Method for Reducing Standby Power Consumption - The present invention provides a method for reducing standby power consumption, which includes providing an LED driving chip; connecting an integrator to a brightness control terminal of the driving chip, connecting the integrator to a comparator, connecting the comparator to a field-effect transistor, connecting the field-effect transistor to the driving chip; connecting the driving chip to a first power source, connecting a high voltage switch terminal of the driving chip via a resistor to a second power source, connecting the brightness control terminal and the integrator to a control source, and connecting the integrator to a reference voltage; and conducting the first and second power sources, the control source, and the reference voltage to allow the integrator and the comparator to pull down voltage of the high voltage switch terminal of the driving chip according to the conduction of the field-effect transistor by a signal of the brightness control terminal. | 05-15-2014 |
20140159590 | MATERIALS AND CONFIGURATIONS OF A FIELD EMISSION DEVICE - A field emission device is configured as a heat engine. Different embodiments of the heat engine may have different configurations that may include a cathode, gate, suppressor, and anode arranged in different ways according to a particular embodiment. Different embodiments of the heat engine may also incorporate different materials in and/or proximate to the cathode, gate, suppressor, and anode. | 06-12-2014 |
20140333212 | PIXEL CIRCUIT AND DISPLAY DEVICE - A pixel circuit able to prevent a spread of the terminal voltages of drive transistors inside a panel and in turn able to reliably prevent deterioration of uniformity, wherein a source of a TFT serving as a drive transistor is connected to an anode of a light emitting element, a drain is connected to a power source potential, a capacitor is connected between a gate and source of the TFT, and a source potential of the TFT is connected to a fixed potential through a TFT serving as a switch transistor and wherein pixel circuit lines are connected by an upper line and bottom line and are arranged in parallel with pixel circuit power source voltage lines so as not to have intersecting parts. | 11-13-2014 |
20150042232 | LEVEL SHIFTER CIRCUIT, SCANNING CIRCUIT, DISPLAY DEVICE AND ELECTRONIC EQUIPMENT - A level shifter circuit, wherein a first and a second transistor circuit are connected serially, a third and a fourth transistor circuit are connected serially; a first input voltage is applied to the second transistor circuit and a second input voltage is applied to the fourth transistor circuit; an input terminal of the first transistor circuit is connected to an output terminal of the third and the fourth transistor circuits, and an input terminal of the third transistor circuit is connected to an output terminal of the first and the second transistor circuits; two transistor circuits of at least one side of two transistor circuits of a first fixed power source side and two transistor circuits of a second fixed power source side are configured of double gate transistors; and the level shifter circuit has a switch element for applying a voltage to a common connection node. | 02-12-2015 |
20150091451 | LIGHTING DEVICE - A lighting control includes a primary and a secondary input power connection for connection to a primary (mains) and a secondary (battery) power supply respectively, control circuitry for controlling delivery of power from the input power connections to one or more light sources, sensing circuitry configured to sense an external impedance coupled, in use, to the primary input power connection and a controller for determining a present operating state of the one or more light sources. The controller includes a latching module adapted to maintain a state information indicating the present operating state of the one or more light sources. The control circuitry is operable to control delivery of power to the one or more light sources in dependence upon the sensed impedance measure and the determined operating state. The lighting devices may be installed in a conventional lighting circuit that uses momentary toggle switches. | 04-02-2015 |
20150130359 | RESETTABLE LIGHTING SYSTEM AND METHOD - A lighting system, including: light emitting elements; a reset switch operable in a first and second state; non-volatile reset memory configured to record the state of the reset switch when power is provided to the system; a wireless communication system; non-volatile communication memory configured to store default settings and configuration settings; a control system operable, in response to initial power provision to the control system, between: a configured mode when an instantaneous reset switch state matches the recorded state, the configured mode including: connecting the wireless communication system to a remote device based on the configuration settings, receiving instructions from the remote device, and controlling light emitting element operation based on the instructions; and a reset mode when the instantaneous reset switch state differs from the recorded state, the reset mode including: erasing the configuration settings from the communication memory and operating the system based on the default settings. | 05-14-2015 |
20160140911 | METHOD OF CONTROLLING MIRROR DISPLAY AND ELECTRONIC DEVICE FOR THE SAME - A method of controlling a mirror display and an electronic device are provided. The method includes identifying whether external power is input to the electronic device; and providing operation power to the mirror display by selectively providing one of the external power and battery power to the mirror display as the operating power according to whether the external power is input to the mirror display. | 05-19-2016 |
20160143098 | LED DRIVE DEVICE - An LED drive device that drives and lights on an LED includes: a power conversion device that converts a voltage of a first power supply, and supplies the voltage to the LED; a second power supply having a voltage lower than a threshold voltage of the LED; a current generation unit that generates current using the voltage of the second power supply, and supplies generated current to an anode of the LED; and a ground-fault detection unit that determines that a ground fault does not occur at the anode of the LED when current does not flow from the current generation unit, and determines that the ground fault occurs at the anode of the LED when current flows from the current generation unit. | 05-19-2016 |