Electric lamp and discharge devices: systems inventions 03/08

20080067940 - Surface plasmon signal transmission: A device for coupling an input signal to an output signal includes a metal transmission line; an ultra-small resonant receiver structure operatively connected to an end of the transmission line constructed and adapted receive the input signal and to cause at least part of the input signal to be passed... Agent: Davidson Berquist Jackson & Gowdey LLP

20080067941 - Shielding of integrated circuit package with high-permeability magnetic material: A device includes at least one ultra-small resonant structure; and shielding constructed and adapted to shield at least a portion of said ultra-small resonant structure with a high-permeability magnetic material. The magnetic material is formed from a substance selected from a non-conductive magnetic oxide such as a ferrite; a cobaltite,... Agent: Davidson Berquist Jackson & Gowdey LLP

20080067942 - Light control circuit: An illuminance sensor is formed as a current output type sensor that outputs a current which increases or decreases in an analog manner corresponding to an increasing or decreasing change of the illuminance. A light-emitting device is connected with a detection resistor that detects a current flowing through a light-emitting... Agent: Brinks Hofer Gilson & Lione

20080067943 - Plasma display and apparatus and method of driving the plasma display: A plasma display supplies a high level voltage and a low level voltage to first and second electrodes performing a sustain discharge in opposite phases during a sustain period. After a voltage of the first electrodes is decreased through a first inductor connected to the first electrodes, the first electrodes... Agent: Robert E. Bushnell

20080067944 - Circuit structure for lcd backlight: A circuit structure for LCD backlight is disclosed in the present invention. The circuit structure includes an inverter topology, a current balance circuit, and a plurality of loads. The current balance circuit is coupled to the plurality of loads and capable of balancing current of N loads by using N/2-1... Agent: O2micro Inc C/o Murabito, Hao & Barnes LLP

20080067945 - Non-discontinuous neon power supply with high power factor: The present invention provides a power supply suitable for a neon light, which power supply has a continuous output and a high power factor in excess of 0.9. The present invention does not require a front-end boost converter.... Agent: Peter J. Phillips Cooper & Dunham LLP

20080067946 - Flashlamp drive circuit: A flashlamp drive circuit including a storage capacitor which is charged and selectively discharged in order to drive a flashlamp. A capacitor (116) is connected in parallel with each respective flashlamp (106) in a bank of flashlamps. Each capacitor (116) has a comparatively small capacitance so as to be capable... Agent: Kenneth I Kohn Kohn & Associates PLLC

20080067947 - Sine wave lamp controller with active switch commutation and anti-flicker correction: A pulse width modulated half bridge dimming controller is provided for dimming a lighting ballast is described. The top half of the bridge is comprised of two switches, the top switch set, and the bottom half of the bridge is comprised of two switches, the bottom switch set. Each switch... Agent: Rudoler & Derosa LLC Attn: Docket Clerk

20080067948 - Re-entrant resonant cavities and method of manufacturing such cavities: p

20080067949 - Piezoelectric transformer module for generating balance resonance driving current and related light module: A light module includes a plurality of light sources for generating light, a power controller, a bridge converter, a first piezoelectric transformer, a second piezoelectric transformer, a resonance balance circuit, and a protection circuit. The power controller is used for generating a power driving signal based on a control signal.... Agent: Madson & Austin

20080067950 - Ballast with arc protection circuit: A ballast (20) for powering one or more gas discharge lamps (70,72,74,76) comprises an inverter (200), an output circuit (300), and an arc protection circuit (400). Arc protection circuit (400) monitors an electrical signal within the output circuit (300). When an arcing condition occurs at the ballast output connections (302,304,306,308,310),... Agent: Fitch Even Tabin And Flannery

20080067951 - Backlight circuit for lcd panel: A multi-lamp backlight system is disclosed. The multi-lamp backlight system includes a plurality of lamps, an inverter circuit and a current balance circuit. The inverter circuit is capable of converting a DC input signal to a pair of AC output signals, which have a 180 degree phase shift. The pair... Agent: O2micro Inc C/o Murabito, Hao & Barnes LLP

20080067953 - Controlling power to light-emitting device: A circuit to control power to a light-emitting device connected in parallel to an inductive device switching current to the parallel combination repeatedly between a charge state during which said inductive element is charged and a discharge state during which said inductive element is discharged through said light-emitting device. A... Agent: Schwegman, Lundberg & Woessner / Infineon

20080067952 - Dc digital starting device: A DC digital starting device includes a voltage-increasing circuit, a first feedback control circuit, a frequency-varying circuit, and a second feedback control circuit. The voltage-increasing circuit provides a voltage for a load in a starting state and a normal working state. The first feedback control circuit detects voltage signals of... Agent: Rosenberg, Klein & Lee

20080067954 - Method of controlling a load control module as part of a startup sequence: Power distribution systems that have a limited peak power capability or a high source impedance, such as site supply generators, are often susceptible to abnormal operation in response to the current drawn at power up from the loads connected to the power distribution system. The present invention provides a load... Agent: Woodcock Washburn LLP

20080067955 - Lighting controls and lighting appliances incorporating lighting controls: A lighting control for use with a lighting appliance includes a light sensor and a controller connected to the light sensor. Controller activates appliance when ambient light is greater than threshold. Threshold may be indicative of an interior of a closet of a room with a door of the closet... Agent: Ralph A. Dowell Of Dowell & Dowell P.C.

20080067957 - Cold cathode fluorescent lamp driving system: A CCFL (cold-cathode fluorescent lamp) driving system for digitally driving at least one CCFL, according to embodiments of the present invention, generally includes a transformer, a sense circuit and a CCFL controller. Through the transformer, a DC voltage is supplied to the CCFL load. The sense circuit is provided to... Agent: PCe Industry, Inc. Att. Cheng-ju Chiang Jeffrey T. Knapp

20080067956 - Lamp power circuit sensing method and system: A lamp power circuit sensing system includes a unidirectional stage (22) having a unidirectional current, a bidirectional stage (24) operably connected to the unidirectional stage (22), and a power sensor (32, 34) operably connected to monitor the unidirectional current and to generate an indicated lamp signal (33, 35). The lamp... Agent: Philips Intellectual Property & Standards

20080067958 - Inverter circuit, fluorescent tube lighting apparatus, backlight apparatus, and liquid crystal display: A driving apparatus and a driving method are disclosed that are capable of uniformly lighting each entire fluorescent tube irrespective of the length or number of fluorescent tubes when simultaneously driving a plurality of fluorescent tubes in a fluorescent tube lighting apparatus. When two inverter circuits having respective transformers are... Agent: Birch Stewart Kolasch & Birch

20080067959 - Method of configuring a startup sequence of a load control system: Power distribution systems that have a limited peak power capability or a high source impedance, such as site supply generators, are often susceptible to abnormal operation in response to the current drawn at power up from the loads connected to the power distribution system. The present invention provides a method... Agent: Woodcock Washburn LLP

20080061700 - Microscale high-frequency vacuum electrical device: A microscale vacuum electronic device (10) provides for a mechanical modulation of cathode (12) position allowing improved high-frequency modulation of an electron beam (24) useful for vacuum electronic devices such as klystrons, klystrodes, and high frequency triodes.... Agent: Wisconsin Alumni Research Foundation

20080061701 - Liquid crystal display having driving circuit for light emitting device: A backlight module that uniformly maintains the brightness of a light emitting device, in which the number of transformers is reduced, and that is applicable for use with large cold cathode ray tubes includes cold cathode ray tubes arranged in parallel, transformers having first secondary-side terminals connected to first electrodes... Agent: Macpherson Kwok Chen & Heid LLP

20080061702 - Apparatus and method to generate plasma: An apparatus and method to generate plasma which can be applied to semiconductor processing. The apparatus includes a chamber having a plasma generating space defined therein, a lower electrode positioned within the chamber, an upper electrode facing the lower electrode and disposed within the chamber to constitute a first plasma... Agent: Stanzione & Kim, LLP

20080061703 - Colour display device with backlighting unit using organic light-emitting diodes and method of implementation: The invention relates to a colour display device with backlighting unit using organic light-emitting diodes and to a method of implementation. The colour display device comprises, from rear to front towards an observer, a multicolour backlighting unit using organic light-emitting diodes and an electro-optical array for switching of the backlighting... Agent: Thomson Licensing LLC

20080061704 - Plasma display device: A disclosed plasma display device is provided with a capacitive load driving circuit configured to drive a capacitive load. A first terminal of the capacitive load is connected to an output terminal of the capacitive load driving circuit, and a driver power supply is connected through a series connection of... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080061705 - Ccfl inverter with single transistor: A power supply circuit for transforming a direct-current voltage into an alternating-current voltage for a light source is provided. The power supply circuit includes a drive circuit, a switch, a transformer and a capacitor. The switch has a control terminal coupled to the drive circuit and a ground terminal coupled... Agent: Lowe Hauptman Ham & Berner, LLP

20080061706 - Ballast with zero voltage switching converter: A ballast (10) for powering at least one gas discharge lamp (20) comprises a switching converter (100) and an inverter (900). Switching converter (100) includes a transistor (130) and a control circuit (200) that provides substantially zero voltage switching of the transistor (130) at a very high frequency. Preferably, control... Agent: Osram Sylvania Inc

20080061707 - Discharge lamp lighting circuit: A discharge lamp lighting circuit includes a power supplying portion having a series resonant circuit including transistors and a bridge driver, a starting portion for applying a high voltage pulse to a discharge lamp to promote a lighting operation, a lighting confirming portion for generating a lighting confirmation signal Sf... Agent: Fish & Richardson P.C.

20080061710 - Current balancing circuit: A current balancing circuit for first and second lamp sets includes a step-up transformer and a current balancer. The step-up transformer is adapted to be coupled to a power supply for receiving an alternating-current source power, and for generating a drive signal by varying magnitude of the alternating-current source power.... Agent: Simpson & Simpson, PLLC

20080061709 - Inverter circuit and backlight assembly having the same: An inverter circuit includes a power supply which outputs an alternating current voltage, an inverter transformer having one primary coil connected to an output terminal of the power supply and pairs of secondary coils which supply an alternating current high voltage, induced by the one primary coil, to pairs of... Agent: Cantor Colburn, LLP

20080061708 - System and method for driving a multi-lamp: A system for driving a multi-lamp, and more particularly to, a system for driving a multi-lamp for driving a parallel arrangement of a plurality of discharge lamps and a method of driving a plurality of discharge lamps and a method thereof. The multi-discharge lamp driving system comprises: a power transformer... Agent: Robert E. Bushnell

20080061711 - Balancing transformers for multi-lamp operation: A ring balancer comprising a plurality of balancing transformers facilitates current sharing in a multi-lamp backlight system. The balancing transformers have respective primary windings separately coupled in series with designated lamps and have respective secondary windings coupled together in a closed loop. The secondary windings conduct a common current and... Agent: Knobbe Martens Olson & Bear LLP

20080061712 - Uniform back-lighting device and display device therewith: The present invention provides a back-lighting device, comprising a housing (10) with a plurality of fluorescent lamps (12), which are operated either individually or in groups (11A, 11B, 11C), wherein operation is controlled by a control device (1) which is fed with response signal; from one or more sensor devices... Agent: Philips Intellectual Property & Standards

20080061713 - Circuit of the electronic ballast with the capability of automatic restart: This present invention discloses a circuit of the electronic ballast with the capability of automatic restart. It includes a rectifier circuit, a trigger circuit of automatic restart, a DC/AC convertor, a output circuit of the lamp, and a circuit of abnormal protection. Its main feature is that there is a... Agent: Jacobson Holman PLLC

20080061714 - Switch control system of homeplug and method thereof: A switch control system of HomePlug and method thereof are disclosed. At least a switch and a central server are connected to form a home network. By a switch identification number composed of a Medium Access Control Address (MAC address) of the switch and a server identification (ID), the central... Agent: Rosenberg, Klein & Lee

20080061716 - Backlight unit and crystal display device using the same: A backlight unit provides white light for a display device. A light emitting unit may include light emitting diodes (LEDs). The light emitting unit may be combined with a power supplying unit and a current balancing unit to improve the white balance of the light emitted from the LEDs and... Agent: Brinks Hofer Gilson & Lione

20080061715 - Electronic controller for high-power gas discharging lamp: An electronic controller for a high-power gas discharging lamp bulb includes a filter circuit to reduce interference and control the electromagnetic characteristics of an input power signal. A rectifier circuit electrically communicates with the filter circuit to generate a DC power signal. A power factor switching circuit electrically communicates with... Agent: Stoel Rives LLP

20080061717 - Led array: An LED array comprising at least two LED chips (2) contains a temperature sensor (3), and means are provided for regulating the operating current of the LED chips (2) as a function of the temperature detected by the temperature sensor (3). This makes it possible for the LED chips (2)... Agent: Fish & Richardson PC

20080061718 - Standing-wave electron linear accelerator apparatus and methods: A particle accelerator system, including apparatuses and methods, for producing a beam of bunched charged particles at high intensities and with minimal energy dispersion comprises a bunching section having a plurality of bunching cavities, an accelerating section having a plurality of accelerating and coupling cavities, and an electromagnetic drive subsystem... Agent: CourseyIPLaw, P.C.

20080054813 - Plasma lamp with conductive material positioned relative to rf feed: In an example embodiment, an electrodeless plasma lamp is provided which comprises a lamp body comprising a dielectric material having a relative permittivity greater than 2, and a bulb adjacent to the lamp body, the bulb containing a fill that forms a plasma when RF power is coupled to the... Agent: Schwegman, Lundberg & Woessner, P.A.

20080054815 - Single inductor serial-parallel led driver: An LED driver circuit is disclosed that can drive a plurality of LED strings that are arranged in parallel, each LED string having a plurality of component LEDs that are series-connected. The LED strings can be the same type of LEDs in each string, or have different types of LEDs... Agent: Sterne, Kessler, Goldstein & Fox P.l.l.c.

20080054814 - Ac driven light-emitting diodes: The invention relates to a circuit (2) comprising at least two parallel-connected light-emitting diodes (4, 5) opposite poled in a first parallel branch (12) and comprising at least two parallel-connected light-emitting diodes (6, 7) opposite poled in a second parallel branch (13), and also comprising a capacitor (8) and a... Agent: Philips Intellectual Property & Standards

20080054816 - Ballasts for fluorescent lamps: Circuits are disclosed, for example for driving fluorescent lamps, and such circuits may form part of a ballast. First and second sensing circuits can apply respective signals to a control circuit as a function of an end-of-lamp life condition and of the number of re-strike attempts.... Agent: Henricks Slavin And Holmes LLP Suite 200

20080054817 - Driving apparatus of light source: A driving apparatus used for driving a light source is provided. The driving apparatus includes a signal processing unit, a control unit, and a driving unit. The signal processing unit generates an enabling signal and a dimming signal according to an input signal. The control unit includes an enabling module... Agent: J C Patents, Inc.

20080054818 - Light device and control method thereof: Provided is a light device according to one embodiment comprises a backlight unit, a plurality of color sensors, a backlight unit driver, and a backlight unit controller. The backlight unit comprises a light emitting diode device to provide light. The plurality of color sensors senses a wavelength and an amount... Agent: Saliwanchik Lloyd & Saliwanchik A Professional Association

20080054819 - Electrical circuit with dual stage resonant circuit for igniting a gas discharge lamp: A circuit such as may be used for igniting and operating a gas discharge lamp is provided. The circuit includes a resonant circuit connected to receive a variable voltage output signal from an inverter. The resonant circuit includes a first circuit stage and a second circuit stage. The second circuit... Agent: General Electric Company Global Research

20080054820 - Light source unit, illumination apparatus for display apparatus, and supply apparatus: A light source unit for use in, for example, a backlight for illuminating a display panel of a liquid crystal display apparatus, includes a cold-cathode tube having discharge electrodes provided one in each end portion of a glass tube whose interior is filled with a discharge gas. A coil as... Agent: Sharp Kabushiki Kaisha C/o Keating & Bennett, LLP

20080054821 - Systems and methods for indicating lighting states: In general, the present disclosure pertains to systems and methods for controlling the states of lights and/or other electrical components. In one exemplary embodiment, a system includes at least one light source, a light indicator, and logic. The logic is configured to control the light indicator such that the light... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20080054823 - Automatic light dimmer for electronic and magnetic ballasts (fluorescent or hid): An apparatus is disclosed for automatic light dimming of electronic and magnetic ballasts used for fluorescent or high intensity discharge lamps. A variable capacitant's limiting current is added in the lamps which provides lighting intensity controls without changing the ballast's operation frequency. Several capacitors are placed in line with a... Agent: William B. Nash Jaskson Walker, L.L.P.

20080054822 - Method for driving light-emitting diode, light-emitting diode, method for driving display, display, method for driving electronic device, electronic device, method for driving optical communication apparatus, and optical communication apparatus: A method for driving a light-emitting diode includes the step of modulating the luminance of the light-emitting diode with current density within the range of 20 A/cm2 or less. The light-emitting diode includes a p-type layer, an n-type layer, and a light-emitting layer disposed therebetween and having an indium-containing quantum... Agent: Wolf Greenfield & Sacks, P.C.

20080054824 - Pfc and ballast control ic: The IRS21681D is a fully integrated, fully protected 600V ballast control IC designed to drive all types of fluorescent lamps. The IRS21681D is based on the popular IR2166 control IC with additional improvements to increase ballast performance. PFC circuitry operates in critical conduction mode and provides high PF, low THD... Agent: Ostrolenk Faber Gerb & Soffen

20080054826 - Protection for external electrode fluorescent lamp system: The present invention provides a driving circuit with protection function for driving a set of external electrode fluorescent lamps (EEFL). The drive circuit includes: a transformer connected to the set of EEFLs; a switching network connected to the transformer which delivers power to the transformer; a sensing circuit connected to... Agent: Murabito, Hao & Barnes, LLP

20080054825 - Using pulse density modulation for controlling dimmable electronic lighting ballasts: Pulse Density Modulation (PDM) is used to control the amount of light from a fluorescent lamp by applying a voltage to the lamp filaments at a low frequency that is approximately at a series resonant frequency of the lamp ballast inductor and the lamp filament capacitor, no voltage and a... Agent: Baker Botts, LLP