Patents by Inventor Dan Zhichao Deng

Dan Zhichao Deng 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).

  • XOR differential phase detector with transconductance circuit as output charge pump
    Patent number: 6194917
    Abstract: An apparatus for and method of reducing transistor body effect when detecting and correcting a phase error between clock signals using delay-locked and phase-locked loop circuits. The clock signals are provided to an equal number of circuit elements in cross-coupled XOR circuits. The circuit includes a transconductance circuit having at least two PMOS transistors with their substrates directly connected to their sources.
    Type: Grant
    Filed: January 21, 1999
    Date of Patent: February 27, 2001
    Assignee: National Semiconductor Corporation
    Inventor: Dan Zhichao Deng