Patents by Inventor Hui-Chun Hsieh

Hui-Chun Hsieh 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).

  • FM demodulator including a DC offset detector
    Patent number: 6972617
    Abstract: An FM demodulator has a differential output demodulator for receiving an FM signal and for outputting a positive differential signal and a negative differential signal of a demodulated signal of the FM signal, a DC offset detector electrically connected to the differential output demodulator for generating a DC offset signal according to peak signals of the positive differential signal and the negative differential signal, and a correction circuit electrically connected to the differential output demodulator and the DC offset detector to compensate for the demodulated signal according to the DC offset signal.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: December 6, 2005
    Assignee: AMIC Technology Corporation
    Inventors: Hui-Chun Hsieh, Te-Chih Chang
  • FM DEMODULATOR INCLUDING A DC OFFSET DETECTOR
    Publication number: 20050093621
    Abstract: An FM demodulator has a differential output demodulator for receiving an FM signal and for outputting a positive differential signal and a negative differential signal of a demodulated signal of the FM signal, a DC offset detector electrically connected to the differential output demodulator for generating a DC offset signal according to peak signals of the positive differential signal and the negative differential signal, and a correction circuit electrically connected to the differential output demodulator and the DC offset detector to compensate for the demodulated signal according to the DC offset signal.
    Type: Application
    Filed: April 6, 2004
    Publication date: May 5, 2005
    Inventors: Hui-Chun Hsieh, Te-Chih Chang