Patents by Inventor John Torrence Chapman

John Torrence Chapman 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).

  • Publication number: 20100083330
    Abstract: A method for use in an RFoG cable network calls for allocating upstream bandwidth to CM devices, wherein allocating bandwidth includes selecting a start time and allocating respective time slots relative to the selected start time to at least one of the requesting CM devices; and further, allocating the same timeslots over multiple selected upstream channels, thereby aligning upstream transmissions from the requesting CMs across the selected upstream channels. Several embodiments are disclosed to enable DOCSIS 3.0 type scheduling over an RFoG network.
    Type: Application
    Filed: September 29, 2008
    Publication date: April 1, 2010
    Applicant: Cisco Technology, Inc.
    Inventors: Alon Bernstein, John Skrobko, John Torrence Chapman
  • Publication number: 20100002719
    Abstract: An M-CMTS compatible UEQAM device implements circuitry to identify and analyze MAP message in the data stream sent from the M-CMTS Core with respect to timing information embedded in those messages. The improved UEQAM will then create a specific message as an extension to DEPI to communicate that information to the M-CMTS Core. The M-CMTS Core will employ that analysis to automatically adjust MAP message advance time to reduce delay and thus improve system performance. This invention will provide a closed-loop between the M-CMTS Core and the UEQAM where valuable transmission information will periodically be fed back from UEQAM-to-M-CMTS Core in real-time.
    Type: Application
    Filed: July 2, 2008
    Publication date: January 7, 2010
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Pawel Sowinski, Michael James Healy, John Torrence Chapman, Daniel Wilson Crocker