Patents by Inventor David E. Chisholm

David E. Chisholm 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 apparatus for enabling LCAS-like feature through embedded software
    Patent number: 8014296
    Abstract: A technique controls the capacity of a virtual concatenation group (VCG) carried on a SONET path of a data network. Efficient control of VCG capacity is provided by emulating aspects of a Link Capacity Adjustment Scheme (LCAS) protocol in software. A hardware poller facility is employed to manage the status and state of the VCG, as well as members belonging to the VCG. The hardware poller contains one or more VCG state machines (VSMs) and member state machines (MSMs) configured to maintain the status and states of the VCGs and their members.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: September 6, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: David E. Chisholm, Ji Wen, Charles A. Carriker, Jr., Jim P. Ervin, Sanjeev D. Rampal