Patents by Inventor Kar-chung Lee

Kar-chung Lee 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).

  • Output drive circuit that accommodates variable supply voltages
    Publication number: 20070285135
    Abstract: In accordance with the invention, a driver circuit is described that permits a single thin gate oxide process to be utilized where a dual oxide process may normally be necessary. Circuits employing only thin gate oxide devices are used as the design basis for a single product with a single set of tooling and manufacturing process to operate within the same timing specifications for a core voltage output drive as well as for a higher system drive.
    Type: Application
    Filed: May 4, 2007
    Publication date: December 13, 2007
    Inventors: David Pilling, Kar-chung Lee, Mario Au
  • Output drive circuit that accommodates variable supply voltages
    Publication number: 20050184768
    Abstract: In accordance with the invention, a driver circuit is described that permits a single thin gate oxide process to be utilized where a dual oxide process may normally be necessary. Circuits employing only thin gate oxide devices are used as the design basis for a single product with a single set of tooling and manufacturing process to operate within the same timing specifications for a core voltage output drive as well as for a higher system drive.
    Type: Application
    Filed: December 9, 2004
    Publication date: August 25, 2005
    Inventors: David Pilling, Kar-chung Lee, Mario Au