Patents by Inventor Kumar Keshavan

Kumar Keshavan 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).

  • Method and system for screening nets in a post-layout environment
    Patent number: 8060852
    Abstract: A method and systems are provided for screening and rapid evaluation of routed nets in a post-layout circuit environment, such as in the design of printed circuit boards. A portion of nets are selected for determination of associated signal quality factors. Signal channels containing one or more selected nets are then built. A reference input stimulus is propagated along each of the signal channels in a frequency based simulation for generating characteristic responses of the selected nets' signal channels. A signal channel quality factor is obtained for each signal channel based upon its characteristic response. The signal channels and their nets are then comparatively analyzed according to corresponding signal channel quality factors to selectively identify any aberrant nets warranting supplemental evaluation for faults.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: November 15, 2011
    Assignee: Cadence Design Systems, Inc.
    Inventors: Ambrish Varma, Feras Al-Hawari, Kumar Keshavan