Electric lamp and discharge devices: systems inventions 10/06

20060238129 - Magnetron for microwave oven: It is an object to provide a magnetron for a small-sized microwave oven which takes safety standards and a noise into consideration, in a magnetron 10 for a microwave oven, a pair of choke coils 16 and 17 are provided in a filter case 11, and a height H1 of...

20060238130 - Light source controlling circuit and portable electronic apparatus: A light source controlling circuit controls a light source outputting continuous light. The light source controlling circuit has a power supply circuit supplying an electric power to the light source, a light source monitoring circuit monitoring a state of the light source, and a control circuit outputting a first control...

20060238131 - Power supply control apparatus for heater of fixing unit: A power supply control apparatus for a heating element heating a fixing roller. A plurality of heating elements generate a predetermined heat using AC power. A plurality of switching parts switch the AC power to the plurality of heating elements, and a controlling part controls the plurality of switching parts...

20060238132 - Plasma processing apparatus and method: A plasma processing apparatus that passes a microwave, which is introduced into a waveguide, through a slot and propagates the microwave to a dielectric, converts a predetermined gas supplied into a processing chamber into plasma, and applies plasma processing to a substrate, in which a plurality of the waveguides are...

20060238133 - Ion implantation system and control method: An ion source is disclosed that includes an ionization chamber having a restricted outlet aperture and configured so that the gas or vapor in the ionization chamber is at a pressure substantially higher than the pressure within an extraction region into which the ions are to be extracted external to...

20060238134 - Electro-luminescence display device and driving method thereof: An electro-luminescence display device includes: an electro-luminescence display panel including red, green and blue subpixels in regions defined by a plurality of data lines and a plurality of scan lines; a scan driver integrated circuit for driving the scan lines; and a data driver integrated circuit for driving the data...

20060238135 - Semiconductor device and display device: When a signal inputted to a pixel is erased by setting potentials of a gate terminal and a source terminal of a driving transistor to be equal, a current slightly flows through the driving transistor in some cases, which leads to occur a display defect. The invention provides a display...

20060238136 - Lamp and bulb for illumination and ambiance lighting: An Edison-style light bulb (40) which supports a plurality of light emitting diodes (LEDs) (50) and an illumination source (54). First and second electrical circuits (56) and (58) are mounted in the bulb to supply electrical power to the illumination source and to the LEDs. A switch circuit (60) is...

20060238137 - Discharge lamp lighting circuit: A discharge lamp lighting circuit includes a DC/AC converter, a starting circuit, a control unit, a plurality of switching elements driven by the control unit and a series LC resonance circuit. At the time of lighting the discharge lamp, the driving frequency of the switching elements is set to a...

20060238138 - Control circuit for maintaining constant power in power factor corrected electronic ballasts and power supplies: The control circuit for maintaining constant power in power factor corrected electronic ballasts and power supplies maintains constant power in a variable load. This constant power control circuit provides a closed loop constant power management process for gas discharge lamps by adding a scaled lamp voltage to a scaled voltage...

20060238139 - High efficiency off-line linear power supply: A method of providing power to an electronic circuit in a two wire dimmer connecting a hot line of an AC network to a lamp load, the method comprising obtaining power from the two wire dimmer during regions of an AC waveform formed across a portion of a circuit of...

20060238140 - Electroluminescent lamp driving circuit and method: A driving circuit for driving an electroluminescent lamp is disclosed. The driving circuit includes an alternating current (AC) voltage generator for providing at an output an AC output voltage waveform for driving an electroluminescent lamp and a controller for controlling the phase and polarity of the AC output voltage waveform....

20060238141 - Circuit and method for operation of a gas discharge lamp: The invention relates to a circuit (1) and a method for operation of a gas discharge lamp (3) with a switching transformer (2), which switching transformer comprises a switch (22), a converter inductor (24) and a control means (27) in a control loop (33) for measuring a lamp voltage and...

20060238142 - Method for driving a fluorescent lamp and an inverter circiut for performing such a method: A method for driving a fluorescent lamp and an inverter circuit for performing the same are used to reduce an amount of electromagnetic interference (EMI) generated by a transformer and an instantaneous loading of a DC voltage source. The inverter circuit comprises a DC square wave voltage source, a bridge...

20060238144 - Ignition device and spark condition detection method: When a spark discharge is produced, a first current flows in one direction. From a rise of an ignition signal to energize an ignition coil to a fall of the ignition signal to deenergize the ignition coil, in order that a second current flowing in the opposite direction can be...

20060238143 - Method and apparatus for controlling power generation using gradually exciting technique: A generation control apparatus for vehicles is provided, in which a drastic change in the drive torque of a generator, which occurs with the cancellation of gradual excitation immediately after starting an internal combustion engine, can be suppressed to prevent stoppage of the internal combustion engine. The generation control apparatus...

20060238145 - Control system for fluorescent light fixture: A ballast module for a fluorescent light comprises an electrolytic capacitance element. A temperature sensor senses a temperature of the electrolytic capacitance element. A control module communicates the temperature sensor and adjusts power output to the fluorescent light when the sensed temperature exceeds a predetermined threshold....

20060238146 - Methods and apparatus to enhance operation of fluorescent lamps: A shield around a cathode of a fluorescent lamp, inside the lamp, prevents the overheating of the glass wall of the lamp, in the proximity of the cathode and the premature of the cathode due to the parasitic leakage current to ground....

20060232213 - Control system for fluorescent light fixture: A control system comprises a switch and a control module that communicates with the switch and that samples a filament resistance of a fluorescent light when the switch is off and that selectively increases current supplied to the fluorescent light above a nominal current value during turn on based on...

20060232214 - Apparatus and method for forming a plasma: Apparatus is described for treating an effluent gas stream from a semiconductor manufacturing process tool. The apparatus comprises a plasma torch for generating a glow discharge from an inert, ionisable gas. The gas stream is conveyed to the glow discharge to ignite a plasma. A source of electromagnetic radiation supplies...

20060232215 - Soft x-ray laser based on z-pinch compression of rotating plasma: A method and apparatus for producing soft x-ray laser radiation based on z-pinch compression of a rotating low pressure plasma column are disclosed. A rotating, low pressure plasma column is created by electric discharge or by laser excitation inside a containment tube. Rotation of the plasma may be induced by...

20060232216 - Information processing apparatus and luminance adjusting method: According to one embodiment, an information processing apparatus includes a display unit which includes a light emitting element as a light source, a variable resistance circuit which is connected in series with the light emitting element, a resistance value control unit which changes, when a designated luminance level is lower...

20060232218 - Display device and electronic device using the same: A display device with a compensation circuit that applies a fixed potential constantly to a gate electrode of a driving transistor for a certain period is provided. Specifically, each difference voltage value between an anode and a cathode of the light emitting element is utilized in the case where the...

20060232217 - Organic electroluminescent display device and driving method thereof: An organic electroluminescent display device includes a gate line receiving a gate signal, a data line crossing the gate line, the data line receiving a data signal, a switching thin film transistor switching the data signal according to the gate signal, a driving thin film transistor connected to the switching...

20060232220 - Low frequency electronic ballast for gas discharge lamps: An electronic ballast for high intensity gas discharge lamps where the wave form of the lamp current is square wave providing acoustic resonance and flickering free operation. The circuit, having high efficiency, operates in a wide temperature range providing ideal ballast curve and reliable ignition for the lamps. Furthermore, significant...

20060232219 - Single driver for multiple light emitting diodes: A LED driver circuit (70, 80) employs a power source (IS, VS) for providing power at a power conversion frequency to a switching LED cell (30-32, 40-42). The switching LED cell (30-32, 40-42) switches between a radiating mode and a disabled mode at a LED driving frequency. In the radiating...

20060232221 - Switching power supply device: A switching power supply device has a large load power supply line for a CRT circuit, to and from which a dummy resistor for voltage stabilization is connected and disconnected by a switch. In standby state, a control unit turns off the switch to disconnect the dummy resistor from the...

20060232223 - Discharge lamp lighting circuit: A control section is used to control a DC-to-AC converter circuit to perform lighting control of a discharge lamp. A transformer, switching elements, and a capacitor for resonance are included. The switching elements are driven and serial resonance of the capacitor and the inductance component of the transformer or an...

20060232224 - Electronic ballast for a lamp: An electronic ballast for a lamp having a bridge circuit, includes at least one first switch and a second switch, a center point of the bridge circuit between the first and second switch, the center point coupled on one side to a reference potential via the series circuit including a...

20060232222 - Integrated circuit capable of enhanced lamp ignition: A method according to one embodiment may include supplying ignition power and steady state power to at least one lamp. The method of this embodiment may also include receiving, during an ignition period of said lamp, a feedback signal indicative of power supplied to said lamp; comparing said feedback signal...

20060232225 - Electronic ballast for a lamp: An electronic ballast for a lamp has a DC voltage connection; a switching unit having a supply voltage with the DC voltage connection being coupled thereto, and a first capacitor coupled between the supply voltage connection and a reference potential; an AC voltage connection, at which a voltage can be...

20060232227 - Membrane touch dimmer: There is disclosed a two wire touch operated dimmer controlled by a membrane potentiometer. Adjusting the DC potential on the membrane potentiometer changes the output potential to a load. In many prior art touch operated dimmers controlled by membrane potentiometers, there is no isolation between the line power and the...

20060232226 - Method and control circuitry for providing average current mode control in a power converter and an active power filter: Control circuitry uses modified average current mode control to regulate average current through an inductor of a power converter. Control circuitry uses modified average current mode control to regulate average current through an inductor of an active power filter. Control circuitry uses average current mode control to regulate average current...

20060232228 - Apparatus and method for driving backlight: The apparatus for driving a backlight includes a plurality of lamps each of which has first and second electrodes, a transformer for receiving an AC waveform to provide high voltage AC waveform to drive the plurality of lamps, a detection circuit for generating a detection voltage corresponding to the high...

20060232229 - Electronic ballast for a lamp: The present invention relates to an electronic ballast for a lamp having a bridge circuit, which comprises at least one first switch (S1) and a second switch (S2) which are coupled between a connection (A1) for a supply voltage and a connection (A2) for a ground potential, a center point...

20060226785 - Backlight assemblies, connector modules and conductive blocks thereof: Backlight assemblies for large flat panel displays are provided. A backlight assembly comprises a back plate, a plurality of first and second lamps, a first connector module and an optical assembly. The first and second lamps are parallel to an axis, disposed in a first position and a second position...

20060226786 - Inductively-coupled plasma etch apparatus and feedback control method thereof: An inductively-coupled plasma etch apparatus and a feedback control method thereof are provided. A voltage/current measuring device is connected to an electrostatic chuck of the plasma etching apparatus, so as to measure the RF current, voltage and the phase angle between them on the electrostatic chuck. The ion current and...

20060226787 - Electrostatic fluid accelerator for and method of controlling a fluid flow: An electrostatic fluid accelerator includes an electrode array including an array of corona discharge electrodes and an array of accelerating electrodes. A detector is configured to sense a constituent component of the fluid as present in an output from the electrode array. A control circuit supplies power to the electrode...

20060226788 - Active matrix type display device and driving method thereof: A residual image effect is suppressed to improve quality of display of an active matrix type display device. A capacitor line electric potential switching circuit switches an electric potential of a capacitor line from a first capacitor electric potential Vsc1 to a second capacitor electric potential Vsc2 that is higher...

20060226789 - Power supply circuit for flash discharge tube: A voltage is applied across the positive electrode and negative electrode of a flash discharge tube (xenon flash lamp) to emit light by a charge and discharge capacitor. This voltage application accumulates energy in a residual inductance existing in the circuit constructed by the flash discharge tube and the power...

20060226790 - Method and system for variable led output in an electronic device: A waveform generator generates LED signal values that define an LED waveform and period. Each signal value is scaled by a particular scaling value to scale the amplitude of the LED waveform. The scaled LED waveform is then transmitted to an LED to cause the light emitted by the LED...

20060226791 - Method of adopting square voltage waveform for driving flat lamps: The present invention relates to a method adopting square voltage waveform for driving a flat lamp used as the light source of a flat panel display or a common light fixture, the method comprising steps of: using a power unit to convert direct current into voltage of square waveform; using...

20060226793 - Discharge lamp lighting device: A device for lighting a discharge lamp has a drive circuit to feed alternating power the discharge lamp, and a control circuit. The control circuit controls the drive circuit by a drive pulse to perform a burst dimming control over the discharge lamp. The control circuit has detector, subtractor, a...

20060226792 - Method for stabilizing brightness of a cold cathode fluorescent lamp and related apparatus: A method for stabilizing brightness of a cold cathode fluorescent lamp includes receiving currents from two ends of the cold cathode fluorescent lamp and providing a current for the cold cathode fluorescent lamp according to a lower current of the currents received from the two ends of the cold cathode...

20060226794 - Discharge lamp lighting apparatus and luminaire: A discharge lamp lighting apparatus, comprises a DC power supply, an inverter circuit, connected to the DC power supply, and provided with at least two switching devices, and a discharge lamp energized by the inverter circuit, wherein one switching device has an on-duty complementarily different with an on-duty of the...

20060226796 - High-voltage discharge lamps parallel and driving arrangement: A high-voltage discharge lamps parallel and driving arrangement includes a first and a second high-voltage discharge lamp bank having a plurality of parallelly connected high-voltage discharge lamps each, and being electrically connected to a first and a second output at a secondary side of a transformer, respectively. A primary side...

20060226795 - Lighting device having a circuit including a plurality of light emitting diodes, and methods of controlling and calibrating lighting devices: A lighting device (132) includes a circuit having a power supply and a plurality of light emitting diodes (120) connected in series with the power supply. The plurality of light emitting diodes (120) includes at least two groups of series-connected light emitting diodes, the groups of series-connected light emitting diodes...

20060226797 - Steering column switch system comprising an emergency operation function: A steering column switch system includes a device for recording the position of the steering column switch. The device converts the switching position that has been adopted by the steering column switch into a bit pattern. A decoding unit assigns a switching function to the bit pattern of the position...

20060226798 - Modulation method for bridge circuits for the particular control of direct current motors: The invention relates to methods and systems for modulating the supply voltage of an electric load, particularly an electric motor, fed by a bridge circuit, wherein the load is switched as a function of a predetermined setpoint value for the input current or the input power by means of power...

20060220565 - Device for locking out a pressurized storage container and method for the same: A device and method for locking out an explosion suppressor that includes a discharge valve with a load end and a discharge end. The load end and the discharge end define a discharge path therethrough. The discharge valve includes a side opening transverse of the discharge path. A storage container...

20060220566 - Magnetron: In a magnetron having a body 1 defining an anode 2 divided into resonant cavities 4 by vanes 3 and having a coaxial cathode 5, r.f. energy produced when a magnetic field is applied parallel to the axis of the anode is launched along a waveguide 8 by an antenna...

20060220567 - Illumination apparatus for a fluorescent task lamp: An illumination assembly for a handheld fluorescent task lamp, comprising first and second elongated compact fluorescent bulbs positioned in an upright orientation side by side; a self starting electronic driver circuit operable to start and run the at least first and second compact fluorescent bulbs; and first and second receptacles...

20060220569 - Electronic ballast for a fluorescent task lamp: An electronic ballast circuit for a handheld fluorescent task lamp, comprising a self-starting electronic driver circuit operated by a power supply and operable to start and run at least first and second compact fluorescent bulbs from a single output; first and second receptacles for connecting the first and second bulbs...

20060220568 - Fluorescent task lamp: A handheld fluorescent task lamp comprising a housing assembly having a housing and a tubular lens body enclosing compact fluorescent bulbs, an elongated spine configured for slidingly supporting the lens body, and a resilient bulkhead for cushioning the compact fluorescent bulbs in the lens body; an electronic ballast circuit within...

20060220571 - Light emitting diode current control method and system: A method of accurately controlling at least one of an intensity, brightness, dimming or color mixing of a LED, the method comprising monitoring an actual current flowing through the LED, selecting a specific current based on at least one of a desired illumination intensity, a desired brightness, a desired dimming,...

20060220570 - Maximizing efficiency of battery-powered led drivers: An apparatus and method is provided for optimizing LED driver efficiency. The present invention offers low cost solutions for powering LEDs while minimizing overall power dissipation in devices powered by a depletable power source. Low system cost is attained using a charge pump to increase LED drive voltage level and...

20060220572 - Driving device of luminescent display panel and driving method of the same: A driving device 100 of a luminescent display panel in which luminescent elements 14 each having luminescence controlled by a luminescence driving transistor 12 are arranged at intersecting positions of a plurality of data lines and a plurality of scanning lines and in which pixels each including a plurality of...

20060220573 - High-frequency power device and method for controlling high-frequency power: A high-frequency power device including: an oscillator; a high-frequency power supplier; a reflection coefficient calculator; a discharge signal output unit; and a frequency controller, wherein the frequency controller: instructs the oscillator to oscillate the oscillation signal at a first oscillation frequency for the period of time while a discharge signal...

20060220574 - Plasma processing method and apparatus, and autorunning program for variable matching unit: A plasma processing apparatus includes an upper matching unit 44 which is a variable matching unit whose impedance can be varied, and a main controller 100. The upper matching unit 44 includes a controller 104 for variably controlling the impedance positions of a variable reactance element of a matching circuit...

20060220575 - Ac gas discharge display device: A return path is efficiently and advantageously provided for alternate discharge current flowing between X and Y driver circuits arranged on right and left sides of an AC-driven gas discharge display device of especially a plasma tube array type. The AC-driven gas discharge display device comprises a front-side, transparent substrate...

20060220577 - Display and method of driving the same: A display sequentially executes first and second operations during a write period. The first operation includes making a first constant-current flow through a video signal line while connecting a first terminal of a drive control element to a power supply terminal connecting a second terminal and control terminal of the...

20060220576 - Method of improving uniformity of brightness between pixels in electron emission panel: A method of improving uniformity of brightness between pixels in an electron emission panel includes respectively applying a scan driving voltage and a data driving voltage to a scan electrode and a data electrode of each of a plurality of pixels, wherein one of the scan driving voltage and the...

20060220580 - Array substrate: An array substrate includes an insulating substrate, pixel circuits arranged in a matrix on the insulating substrate, and video signal lines arranged correspondently with columns which the pixel circuits form. Each pixel circuit includes a drive transistor whose source is connected to a power supply terminal, a pixel electrode, an...

20060220581 - Light emitting device, driving method of light emitting device and electronic device: By controlling the luminance of light emitting element not by means of a voltage to be impressed to the TFT but by means of controlling a current that flows to the TFT in a signal line drive circuit, the current that flows to the light emitting element is held to...

20060220579 - Method and apparatus for driving electron emission panel: An electron emission panel driving method and apparatus that is capable of reducing the panel's power consumption. The driving method includes the operation of comparing two successive frames of image data. When the two successive frames are not identical, each of the two frames is driven during a one-frame period,...

20060220578 - Organic light emitting display and method of driving the same: An organic light emitting display includes a brightness controller that restricts the total brightness of a pixel unit when the number of pixels that emit bright light is greater than a predetermined level....

20060220582 - Organic light-emitting display device: The present invention provides OLEDs of the top emission type comprising organic light-emitting (LE) elements by preventing the problems such as the widening of the power lines, the reduction in the aperture ratio caused by the widening of the upper and the lower capacitor electrodes and the short circuit between...

20060220584 - Electron emission device: e

20060220583 - Green sheet, plasma display panel and method of manufacturing plasma display panel: A green sheet, a plasma display panel using the green sheet and a method of manufacturing a plasma display panel are provided. The method of manufacturing the plasma display panel comprises laminating a green sheet comprising a dielectric layer and an electrode pattern on a substrate, and firing the substrate....

20060220585 - Semiconductor light emitting circuits including light emitting diodes and four layer semiconductor shunt devices: Semiconductor light emitting circuits include semiconductor light emitting diodes that are serially connected between a pair of input terminals. Four layer semiconductor devices, such as Shockley diodes and/or thyristors are also provided, a respective one of which is connected across a respective one of the semiconductor light emitting diodes. The...

20060220586 - Array of light emitting diodes: The invention concerns LED arrays of the type in which one or more “strings” of LEDs such as 6 are series connected across a potential difference as at 8, 10. To compensate for changes in forward voltage of individual LEDs 4, and/or for supply voltage variations, a switching means (which...

20060220587 - Shift register and image display apparatus containing the same: A shift register has an output stage formed by a first transistor connected between an output terminal and a first clock terminal and a second transistor connected between the output terminal and a ground. Third and fourth transistors are connected in series between the gate of the first transistor (first...

20060220591 - Dc voltage converter with several isolated regulated outputs: The present invention relates to a DC voltage converter with soft switching of the type with half-bridge arrangement at the primary side and of quasi-resonant half-wave type at the secondary side. This converter comprises a single transformer and can generate a plurality of regulated voltages at output. It furthermore comprises...

20060220590 - Operational amplifier, and amplitude modulator and transmitter using the same: The operational amplifier outputs a signal for switching a switch circuit from a drive circuit according to signal amplitude information inputted from a signal source to thereby switch a plurality of supply voltages of a power amplification circuit arranged in an output portion. As a result of this, needed minimum...

20060220588 - Power driver circuit of display panel: The present invention discloses a power driver circuit of display panel. The present invention adopts a power controller, and a resident power system, which is coupled to an alternating power source, provides resident power for the power controller. When receiving an external on/off signal, the power controller will output driving...

20060220589 - Pulse starting circuit: A lamp ballast starting circuit and method for a gas discharge lamp is disclosed. The ballast starting circuit includes the inputs of the starting circuit connected to an inverter circuit, the starting circuit generating a pulse at the leading edge of each alternating half cycle of the inverter circuit output,...

20060220592 - Voltage supply control device and method: One embodiment of the invention provides a voltage supply control device, as well as a process for the control of the voltage supply of a semiconductor component, which can be operated in at least two different voltage supply modes. The process includes detecting the level of a voltage present at...

20060220593 - Nested balancing topology for balancing current among multiple lamps: An apparatus and methods for balancing current in multiple negative impedance gas discharge lamp loads. Embodiments advantageously include balancing transformer configurations that are relatively cost-effective, reliable, and efficient. Embodiments include configurations that are applicable to an unrestrained number of gas discharge tubes, such as cold cathode fluorescent lamps. The balancing...

20060220595 - High frequency power source control circuit and protective circuit apparatus: A precision voltage control circuit applicable to a PWM (Pulse Width Modulation) circuit can offer CCFL (Cold Cathode Fluorescent Lamp) or EEFL (External Electrode Fluorescent Lamp) tubes a stable high frequency voltage or current, so that each CCFL or EEFL tube can get an appropriate compensation current and an optimal...

20060220594 - Method for controlling an inverter under altering voltage: A method for controlling an inverter under altering voltage aims to change the electric conductive interval of the electric conductive cycle of the inverter corresponding to alteration of an input voltage so that the dimming duty cycle, electric conductive cycle and transformer oscillation duty cycle of the inverter can be...

20060220596 - Integrated fluorescent lamp device: An integrated fluorescent lamp device for use with a lamp fixture including a lamp socket configured to removably receive a portion of the integrated fluorescent lamp device therein to selectively support the integrated fluorescent lamp device thereon, the integrated fluorescent device comprises an enclosure to house an electronic ballast coupled...

20060220597 - Cathode-ray tube display apparatus: The present invention relates to a cathode-ray tube display apparatus having a flyback transformer. The apparatus comprises a vertical drive circuit for outputting a predetermined drive current; a vertical output part for outputting a vertical pulse for determining a vertical scanning interval according to an input vertical drive current; a...