| Patent application number | Description | Published |
|---|
| 20080284352 | Control of Delivery of Current Through One or More Discharge Lamps - Control of delivery of current through one or more discharge lamps. Methods include alternately switching on and off switching elements that control a fluorescent lamp, in response to receiving input, until the brightness of the lamp decreases to a threshold. Further, methods include providing control signals at complementary duty cycles to further decrease the brightness and alternating the duty cycles of the signals applied to the filaments of the fluorescent lamp. | 11-20-2008 |
| 20080284442 | Control of Delivery of Current Through One or More Discharge Lamps - Control of delivery of current through one or more discharge lamps. Methods include alternately switching on and off switching elements that control a fluorescent lamp, in response to receiving input, until the brightness of the lamp decreases to a threshold. Further, methods include providing control signals at complementary duty cycles to further decrease the brightness and alternating the duty cycles of the signals applied to the filaments of the fluorescent lamp. | 11-20-2008 |
| 20090096381 | Control of Delivery of Current Through One or More Discharge Lamps - Control of delivery of current through one or more discharge lamps. Methods include alternately switching on and off switching elements that control a fluorescent lamp, in response to receiving input, until the brightness of the lamp decreases to a threshold. Further, methods include providing control signals at complementary duty cycles to further decrease the brightness and alternating the duty cycles of the signals applied to the filaments of the fluorescent lamp. | 04-16-2009 |
| 20090096391 | Control of Delivery of Current Through One or More Discharge Lamps - Control of delivery of current through one or more discharge lamps. Methods include alternately switching on and off switching elements that control a fluorescent lamp, in response to receiving input, until the brightness of the lamp decreases to a threshold. Further, methods include providing control signals at complementary duty cycles to further decrease the brightness and alternating the duty cycles of the signals applied to the filaments of the fluorescent lamp. Methods also include identify parameter sets stored in memory to operate fluorescent lamps. | 04-16-2009 |
| 20100250165 | Control of Delivery of Current Through One or More Discharge Lamps - Control of delivery of current through one or more discharge lamps. Methods include alternately switching on and off switching elements that control a fluorescent lamp, in response to receiving input, until the brightness of the lamp decreases to a threshold. Further, methods include providing control signals at complementary duty cycles to further decrease the brightness and alternating the duty cycles of the signals applied to the filaments of the fluorescent lamp. Methods include digitally comparing voltage signals supplied to a fluorescent lamp and the current drawn by the fluorescent lamp. | 09-30-2010 |
| 20110057580 | Control of Delivery of Current Through One or More Discharge Lamps - Systems and techniques to control of delivery of current through one or more lamps include, in at least one aspect, a method comprising: receiving an electric signal from a resistor in a circuit, where the resistor is selected based on a lamp; determining that a value associated with the electric signal falls in a preset range of values, the preset range having one or more parameters that correspond to the lamp; and outputting the one or more parameters to operate the lamp. | 03-10-2011 |
| 20110169493 | Identification of a Defective Filament in a Fluorescent Lamp - Control of delivery of current through one or more discharge lamps. Methods include alternately switching on and off switching elements that control a fluorescent lamp, in response to receiving input, until the brightness of the lamp decreases to a threshold. Further, methods include providing control signals at complementary duty cycles to further decrease the brightness and alternating the duty cycles of the signals applied to the filaments of the fluorescent lamp. | 07-14-2011 |
| 20110316435 | Control of Delivery of Current Through One or More Discharge Lamps - Control of delivery of current through one or more discharge lamps. Methods include alternately switching on and off switching elements that control a fluorescent lamp, in response to receiving input, until the brightness of the lamp decreases to a threshold. Further, methods include providing control signals at complementary duty cycles to further decrease the brightness and alternating the duty cycles of the signals applied to the filaments of the fluorescent lamp. | 12-29-2011 |
