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| Application No. | Application Title | Issue Date |
| 20050122065 | Dynamic color mixing LED device A dynamic color mixing LED device that includes a plurality of light emitting diode units. Each light emitting diode unit includes e.g. a first LED of a first color (e.g. red) and a second LED of a second color (e.g. green). A third LED of a third color (e.g. blue can a... | 06/09/2005 |
| 20050116663 | Circuit for a gas-discharge lamp The invention relates to a circuit for a discharge lamp, comprising: a first sub-circuit for connecting to mains voltage of a predetermined frequency for rectifying the mains voltage; a second sub-circuit connected to the first sub-circuit for providing an alternating c... | 06/02/2005 |
| 20050110432 | Fixed reverse phase switching power supply with time-based phase pulse triggering control A phase-control power controller that converts a line voltage to an RMS load voltage includes a fixed, reverse phase-control clipping circuit that performs phase-control clipping of a load voltage to provide an RMS load voltage. A conduction angle of the phase-control c... | 05/26/2005 |
| 20050110438 | Fixed forward phase switching power supply with time-based triggering A phase-control power controller that converts a line voltage to an RMS load voltage includes a fixed forward phase-control clipping circuit that clips a load voltage to provide an RMS load voltage. A conduction angle of the phase-control clipping circuit is defined by ... | 05/26/2005 |
| 20050110437 | Lamp containing phase-control power controller with analog RMS load voltage regulation A lamp includes a phase-control power controller within the lamp. The phase-control power controller includes an analog load voltage sensor that provides an optical output related to an RMS load voltage and a phase-controlled dimming circuit that has a comparison circui... | 05/26/2005 |
| 20050110436 | Lamp having fixed forward phase switching power supply with time-based triggering A lamp contains a lamp voltage conversion circuit that is entirely within a base for converting a line voltage at a lamp terminal to an RMS load voltage at a light emitting element. The voltage conversion circuit includes a forward clipping circuit with a three-terminal... | 05/26/2005 |
| 20050110435 | Phase-control power controller with digital RMS load voltage regulation A phase-control power controller that converts a line voltage to an RMS load voltage includes a phase-control circuit with a potentiometer and a capacitor whose resistance and capacitance determine clipping of a load voltage, a load sensing circuit that senses the load ... | 05/26/2005 |
| 20050110434 | Phase-control power controller with analog RMS load voltage regulation A phase-control power controller that converts a line voltage to an RMS load voltage includes an analog load voltage sensor that includes a light emitter that provides an optical output related to an RMS load voltage, and a phase-control circuit that has a comparison ci... | 05/26/2005 |
| 20050110433 | Lamp containing fixed reverse phase switching power supply with time-based phase pulse triggering control A lamp contains a lamp voltage conversion circuit within the lamp and connected to a lamp terminal. The voltage conversion circuit includes a phase-control clipping circuit that clips a load voltage and provides an RMS load voltage to the lamp. The phase-control clippin... | 05/26/2005 |
| 20050110430 | Method of reducing RMS load voltage in a lamp using pulse width modulation A method of converting a line voltage to an RMS load voltage in a lamp includes modulating a load voltage with a pulse width modulation circuit that is entirely within the lamp and provides an RMS load voltage to a light emitting element of the lamp. Conduction is trigg... | 05/26/2005 |
| 20050093488 | Method and apparatus for controlling driving current of illumination source in a display system The present application describes a programmable current controller for regulating an operating driving current flowing through an illumination source. The driving current is regulated according to a digital reference corresponding to a predetermined operating current f... | 05/05/2005 |
| 20050093486 | Electronic ballast having a converter which can continue to operate in the event of lamp failure The invention relates to an electronic ballast, in which an internal converter S1, S2, C1 continues to operate in the event of a lamp failure. An auxiliary power supply from control circuits can thus be maintained. ... | 05/05/2005 |
| 20050073266 | FIXED OPERATING FREQUENCY INVERTER FOR COLD CATHODE FLUORESCENT LAMP HAVING STRIKE FREQUENCY ADJUSTED BY VOLTAGE TO CURRENT PHASE RELATIONSHIP A method of driving a lamp that uses a DC to AC inverter that is connected to a primary winding of a transformer is disclosed. The inverter frequency is variable, and in one embodiment, may be controlled by a voltage controlled oscillator. Circuitry is included that mon... | 04/07/2005 |
| 20050073263 | System, apparatus, and method for driving light emitting diodes in low voltage circuits A system, apparatus, and method for allowing LED operation in circuits operating with power supply levels that are below the forward voltage limits of the LED. A first level of a modulated voltage signal is applied to charge a voltage increasing component in a first pha... | 04/07/2005 |
| 20050062435 | Discharge lamp lighting circuit A discharge lamp lighting circuit includes an emission acceleration controller for detecting a lamp voltage for the discharge lamp, and supplying power greater than a rated value when the discharge lamp is initially lighted, and for gradually reducing the power supplied... | 03/24/2005 |
| 20050062443 | Discharge lamp lighting circuit In a discharge lamp lighting circuit 1, circuits 12, 13, which respectively detect a voltage applied to a discharge lamp 10 and a current flowing through the discharge lamp are provided. Light on/off state, furthermore, light on/off state detecting ... | 03/24/2005 |
| 20050035724 | Electronic circuit, and method of operating a high-pressure lamp The invention relates to an electronic circuit and to a method of operating a high-pressure lamp in various operational modes. The circuit comprises a DC-AC converter consisting of two bridges (110-1) and (110-2). A series circuit comprising ... | 02/17/2005 |
| 20050029967 | Multi-lamp actuating facility A lamp actuating device includes a number of lamps each having an output terminal, an inverter circuit coupled to the lamps to energize the lamps, a low frequency control unit coupled to the inverter circuit, to set an average value for the level of the effective lamp c... | 02/10/2005 |
| 20050029964 | Discharge lamp lighting circuit A discharge lamp lighting circuit includes an emission acceleration controller for detecting a voltage for a discharge lamp and for supplying power exceeding a rated value when the discharge lamp is initially lighted, and thereafter gradually reducing the power to shift... | 02/10/2005 |
| 20050023995 | Discharge lamp lighting device A discharge lamp lighting device includes a high frequency power supply for supplying high frequency power to the discharge lamp via a first impedance element, a DC power supply for applying DC voltage to the discharge lamp via a second impedance element, a dimming cont... | 02/03/2005 |
| 20050023997 | SYSTEM AND METHOD FOR REDUCING FLICKER OF COMPACT GAS DISCHARGE LAMPS AT LOW LAMP LIGHT OUTPUT LEVEL A lamp lighting system allows dimming of a compact gas discharge lamp to a low light output level without perceptible flicker. When the system receives a request to dim the lamp to the low level, the lamp is operated at an intermediate output level prior to operating th... | 02/03/2005 |
| 20050012469 | Circuit arrangement for operating a lamp In an electronic ballast circuit equipped with lamp presence detection means that generate a current flowing through one of the lamp electrodes the detection means are periodically switched off. The power dissipated by the lamp presence detection means is thereby reduce... | 01/20/2005 |
