Patents by Inventor Pu-Ju Su

Pu-Ju Su 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).

  • Patent number: 8324821
    Abstract: A two-wired LED light adjusting system, for controlling the luminance adjustment for a LED lamp module. The light adjusting circuit includes a phase modulating circuit, a LED driving circuit and a controller. The phase modulating circuit generates a phase modulating voltage. The controller detects the phase modulating voltage of various waveforms. When the controller detects the phase modulating voltage of different waveforms, the controller controls the LED driving circuit to enable the LED lamp module to emit light of different luminance according to waveforms of the phase modulating voltage.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: December 4, 2012
    Assignee: Weltrend Semiconductor Inc.
    Inventors: Shih-Chieh Wang, Chiu-Lang Lo, Pu-Ju Su, Yu-Huan Tsai
  • Publication number: 20110148326
    Abstract: A two-wired LED light adjusting system, for controlling the luminance adjustment for a LED lamp module. The light adjusting circuit includes a phase modulating circuit, a LED driving circuit and a controller. The phase modulating circuit generates a phase modulating voltage. The controller detects the phase modulating voltage of various waveforms. When the controller detects the phase modulating voltage of different waveforms, the controller controls the LED driving circuit to enable the LED lamp module to emit light of different luminance according to waveforms of the phase modulating voltage.
    Type: Application
    Filed: December 22, 2010
    Publication date: June 23, 2011
    Inventors: Shih-Chieh Wang, Chiu-Lang Lo, Pu-Ju Su, Yu-Huan Tsai