Patents by Inventor Shujin ZHUANG

Shujin ZHUANG 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).

  • LED driver and control method
    Patent number: 9839080
    Abstract: A DC-DC converter has a pulse width control circuit producing a sequence of pulses, with an on time, an off time and a switching frequency. The on time as well as the switching frequency are both varied in dependence on a dimming setting.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: December 5, 2017
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Liwen Zhou, Qi Zhang, Shujin Zhuang
  • LED DRIVER AND CONTROL METHOD
    Publication number: 20160338158
    Abstract: A DC-DC converter has a pulse width control circuit producing a sequence of pulses, with an on time, an off time and a switching frequency. The on time as well as the switching frequency are both varied in dependence on a dimming setting.
    Type: Application
    Filed: December 29, 2014
    Publication date: November 17, 2016
    Inventors: Liwen ZHOU, Qi ZHANG, Shujin ZHUANG