Patents by Inventor Chee Keong Chow

Chee Keong Chow 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).

  • Sigma-delta ramp loading calibration
    Patent number: 6735540
    Abstract: A continuous automatic calibration system and apparatus using a delta-sigma modulation technique. A first time duration is set. The first time duration is a length of time in terms of clock counts for a calibration procedure. Then, a second time duration occurring during the first time duration is measured. The second time duration is a length of time in terms of clock counts that a counter is operational. A multiplying factor is determined by dividing the first time duration by the second time duration.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: May 11, 2004
    Assignee: STMicroelectronics, Inc.
    Inventors: Giorgio Pedrazzini, Chee Keong Chow
  • Sigma-delta ramp loading calibration
    Publication number: 20030065469
    Abstract: A continuous automatic calibration system and apparatus using a delta-sigma modulation technique. A first time duration is set. The first time duration is a length of time in terms of clock counts for a calibration procedure. Then, a second time duration occurring during the first time duration is measured. The second time duration is a length of time in terms of clock counts that a counter is operational. A multiplying factor is determined by dividing the first time duration by the second time duration.
    Type: Application
    Filed: September 28, 2001
    Publication date: April 3, 2003
    Inventors: Giorgio Pedrazzini, Chee Keong Chow