| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 315189000 | Discharge device loads | 8 |
| 20080203932 | LED CONTROL METHOD AND STRUCTURE - In one embodiment, an LED system is controlled to have a substantially unity power factor. | 08-28-2008 |
| 20090033234 | ILLUMINATING LAMP FOR A DISPLAY DEVICE, AN ILLUMINATING DEVICE FOR A DISPLAY DEVICE, AND A DISPLAY DEVICE - An illuminating lamp for a display device is capable of minimizing a luminance difference between a high-voltage driving side and a low-voltage driving side. The illuminating lamp is arranged behind a display panel via optical sheets and driven in a high-voltage driving method. The illuminating lamp includes discharge lamps connected in series, wherein gas pressures of the discharge lamps at a high-voltage driving side are set to be higher than those of the discharge lamps at a low-voltage driving side. | 02-05-2009 |
| 20090085488 | BACKLIGHT FOR ELECTRONIC DEVICES - Techniques are described to enhance a backlight design for electronic devices. A circuit is described to provide backlight for a display of an electronic device. In an implementation, the circuit includes a collection of light elements arranged electrically in a series and includes one said light element of the series which is operable both with the collection and independently of the collection. In another implementation, the one said light element is arranged to be in a last position of the series electrically and physically is arranged to correspond to a center portion of the display of the electronic device. | 04-02-2009 |
| 20090284160 | CURRENT BALANCING CIRCUIT - The invention provides a current balancing circuit for powering a first load with a negative dynamic resistance and a second load with an essentially different negative dynamic resistance, and a transformer with such turns ratio that at least at an operating frequency impedances of the first and second windings complement the resistances of the first and the second loads, respectively, to a common value. | 11-19-2009 |
| 20100141163 | METHOD OF DRIVING A LIGHT SOURCE, LIGHT SOURCE APPARATUS FOR PERFORMING THE METHOD AND DISPLAY APPARATUS HAVING THE LIGHT SOURCE APPARATUS - A method of driving a light source includes; driving a plurality of light source strings in response to a plurality of driving signals, when a light source module having the plurality of light source strings connected in parallel with each other receives a driving voltage, detecting a detection voltage from channel input terminals of a multichannel current control part, wherein the multichannel current control part controls a resistance difference of the plurality of light source strings based on the plurality of driving signals, and controlling a level of the driving voltage via adjusting a current applied to a feedback terminal of a driving voltage generating part, wherein the driving voltage generating part generates the driving voltage. | 06-10-2010 |
| 20100264837 | PEAK DETECTION WITH DIGITAL CONVERSION - A peak detection/digitization circuit includes a plurality of level detect units, each having a comparator and a flip-flop with a clock input responsive to the output of the comparator. For a detection period, each level detect unit configures a data output signal of the flip-flop to a first data state responsive to a start of the detection period. Further, each level detect unit is configured to enable the comparator responsive to the data output signal having the first data state or a second data state, respectively. While the comparator is enabled during the detection period, the level detect unit configures the data output signal of the flip-flop responsive to a comparison of an input signal to a corresponding reference voltage level by the comparator. The data output signals of the flip-flops of the level detect units at the end of the detection period are used to determine a digital value representative of a peak voltage level of the input signal. | 10-21-2010 |
| 20120074855 | Power Splitter Circuit For Electrodeless Lamp - A lamp assembly adapted to operate as one of a total number of lamp assemblies that are connected together in series and connected to a ballast. The lamp assembly comprises an electrodeless, closed-loop, tubular lamp envelope enclosing mercury vapor and a buffer gas, and a transformer core disposed around a portion of the lamp envelope. An input winding is disposed on the transformer core so that it has a particular number of turns, N | 03-29-2012 |
| 20140346961 | HIGH-WATTAGE CERAMIC METAL HALIDE LAMP - Aspects of the disclosure include a ceramic metal halide lamp in which two arc tubes are arranged electrically in series inside the same outer globe. By arranging the two arc tubes in such a way that light-emitting parts thereof do not overlap, decline in lifespan due to the heat of one arc tube causing the temperature of the other arc tube to increase and lighting failure due to an increase in lamp voltage do not occur. And by setting the distance from an electrode tip at a base side of the first arc tube to an electrode tip at a lamp-top side of the second arc tube to be equal to or less than 3.5 times the average inter-electrode distance of both arc tubes, a preferable distribution of light is implemented. | 11-27-2014 |
