Patents by Inventor Mark S. Hahn

Mark S. Hahn 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).

  • System and method for generating and using stage-based constraints for timing-driven design
    Patent number: 6263478
    Abstract: An integrated circuit design is divided into partitions which each contain two stages of information. The first stage corresponds to sources within the design, and the second stage corresponds to targets within the design. In one implementation, all of the sources in each partition are triggered by a common clock edge. In another implementation, all targets of each partition are triggered by a common clock edge. Specifying timing constraints in partitions can provide an efficient method of determining how much slack, if any, is present in the timing of a design.
    Type: Grant
    Filed: August 11, 1998
    Date of Patent: July 17, 2001
    Assignee: Cadence Design Systems, Inc.
    Inventors: Mark S. Hahn, Jimmy Lam, Limin He, Chris Morrison