Patents by Inventor Chong Yiu Dennis Lui

Chong Yiu Dennis Lui has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • METHOD AND APPARATUS FOR SETTING OPERATING CURRENT OF LIGHT EMITTING SEMICONDUCTOR ELEMENT
    Publication number: 20080238340
    Abstract: A method of determining an operating current adjustment for a light emitting semiconductor element in order to generate a predetermined brightness includes applying a test voltage to the light emitting element, determining a corresponding test current through the light emitting element, and determining the operating current adjustment dependent on the determined test current and the applied test voltage.
    Type: Application
    Filed: March 26, 2007
    Publication date: October 2, 2008
    Inventors: Shun Kei Mars Leung, Chin Tung Derek Lau, Chong Yiu Dennis Lui
  • METHOD AND APPARATUS FOR CONTROLLING LIGHT EMITTING DIODE
    Publication number: 20080180414
    Abstract: A method of driving an LED includes determining an operational parameter of the LED, determining a driving signal parameter for the LED, and generating a periodic driving signal for driving the LED. The generated periodic driving signal has a duty cycle that depends on the determined driving signal parameter and the determined operational parameter of the LED.
    Type: Application
    Filed: January 30, 2007
    Publication date: July 31, 2008
    Inventors: Kai Ming Fung, Chin Tung Derek Lau, Che Chung Roy Li, Chong Yiu Dennis Lui