| Patent application number | Description | Published |
|---|
| 20080278091 | Method and Circuit for Driving Back a Light Emitter of a Display Apparatus - A back light emitter ( | 11-13-2008 |
| 20080303454 | Fluorescent Tube Lamp Drive Circuit - A drive circuit for driving a fluorescent tube lamp comprises a variable frequency oscillator generating a lamp drive frequency, a resonant drive circuit driving the lamp with the lamp drive frequency, and a control unit for driving the variable frequency of the latter under control of a synchronization signal. When a pre-heating frequency is generated by the variable frequency oscillator, the lamp is pre-heated while when an illumination drive frequency is generated, the lamp ignites and operates in its illuminated state. The control unit comprises a transition controller for at an ignition of the lamp limiting the drive frequency to an ultimate ignition frequency, and only enabling transition from the ultimate ignition frequency to the illumination drive frequency after an ignition delay time. | 12-11-2008 |
| 20090168415 | METHOD AND SYSTEM FOR ADJUSTING THE LIGHT SETTING FOR A MULTI-COLOR LIGHT SOURCE - The present inventions relates to a method for adjusting the light setting for a multi-color light source, which method comprises receiving input from a user related to at least one of white color, hue, and chroma, and adjusting white color, hue, and chroma of the light source in accordance with the user input. The method is characterized in the step of automatically changing a current hue and chroma level when the user input is received. This automatic change makes possible to render the subsequent adjustment in setting perceivable for the user, which facilitates the adjustment of the light source. The present invention also relates to a corresponding system and computer program product. | 07-02-2009 |
| 20090179587 | METHOD FOR DIMMING A LIGHT GENERATNG SYSTEM FOR GENERATING LIGHT WITH A VARIABLE COLOR - A method for dimming an illumination system ( | 07-16-2009 |
| 20100052557 | LAMP DRIVER CIRCUIT AND METHOD FOR DRIVING A DISCHARGE LAMP - A lamp driver circuit ( | 03-04-2010 |
| 20100117543 | LIGHTING DEVICE WITH A LED USED FOR SENSING - A lighting device ( | 05-13-2010 |
| 20100277079 | LIGHT SOURCE - Light source having a plurality of light elements ( | 11-04-2010 |
| 20120112657 | LOW COST POWER SUPPLY CIRCUIT AND METHOD - A power supply circuit has an LLC converter stage for converting a DC voltage input into a DC voltage output, and at least one hysteretic converter stage. Each hysteretic converter stage has a DC voltage input coupled to the DC voltage output of the LLC converter stage, and a DC current output. The LLC converter stage lacks a feedback control, and is operated at its load independent point. A ripple on the DC voltage output of the LLC converter does not affect the output current of the hysteretic converter stage. The stable DC current output of the hysteretic converter stage is coupled to a load having one or more LED strings. | 05-10-2012 |
