Patents by Inventor Lianping Chen

Lianping Chen 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).

  • Controller for controlling dimming of a light source
    Patent number: 8227998
    Abstract: A controller for controlling dimming of a light source includes a detector, a dimming signal generator coupled to the detector, and a pulse generator coupled to the dimming signal generator. The detector can detect a startup phase of a burst dimming cycle of the light source and can generate a triggering signal when the startup phase ends. The burst dimming cycle includes an ON period and an OFF period. The dimming signal generator can trigger the ON period of the burst dimming cycle for a predetermined duration in response to the triggering signal. The pulse generator operable for generating a pulse signal to control a current through the light source can be enabled during the ON period and disabled during the OFF period.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: July 24, 2012
    Assignee: O2Micro, Inc.
    Inventors: Jian Liu, Luyang Luo, Lianping Chen, Ching-Chuan Kuo
  • CONTROLLER FOR CONTROLLING DIMMING OF A LIGHT SOURCE
    Publication number: 20110074308
    Abstract: A controller for controlling dimming of a light source includes a detector, a dimming signal generator coupled to the detector, and a pulse generator coupled to the dimming signal generator. The detector can detect a startup phase of a burst dimming cycle of the light source and can generate a triggering signal when the startup phase ends. The burst dimming cycle includes an ON period and an OFF period. The dimming signal generator can trigger the ON period of the burst dimming cycle for a predetermined duration in response to the triggering signal. The pulse generator operable for generating a pulse signal to control a current through the light source can be enabled during the ON period and disabled during the OFF period.
    Type: Application
    Filed: September 28, 2010
    Publication date: March 31, 2011
    Inventors: Jian LIU, Luyang LUO, Lianping CHEN, Ching-Chuan KUO