Patents by Inventor Paul Yip

Paul Yip 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).

  • Apparatus and method for verifying the timing performance of critical paths within a circuit using a static timing analyzer and a dynamic timing analyzer
    Patent number: 5872717
    Abstract: A method of improving the timing performance of a circuit includes the step of producing a first set of timing results from a static timing analyzer operating on a netlist that characterizes a circuit. A critical timing path within the circuit is then identified from the first set of timing results. The critical timing path is then converted into an equivalent schematic circuit representation. A simulation of the equivalent schematic circuit representation on a circuit simulator produces a second set of timing results. Timing discrepancies are then located between the first set of timing results and the second set of timing results. Based upon the timing discrepancies, cells are substituted into the critical timing path to improve the timing performance of the critical timing path.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: February 16, 1999
    Assignee: Sun Microsystems, Inc.
    Inventors: Robert Yu, Paul Yip, Manjunath Doreswamy