Patents by Inventor Douglas E. Green

Douglas E. Green 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).

  • Modem with integrated control processor and digital signal processor sessions
    Patent number: 6047308
    Abstract: A modem for processing telephone calls includes a line interface for coupling the modem to a telephone line and a computer interface for coupling the modem to a host computer. A processor in the modem between the line interface and the computer interface receives signals running between the telephone line and the host computer. Both the signal processing session and the control processing session required to process the signals are implemented on the single processor.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: April 4, 2000
    Assignee: Cisco Technology, Inc.
    Inventors: Grant Grummer, Bruce Osler, Frank O. Voellmann, Kelly Clifford, Douglas E. Green, Kenneth D. Jones
  • Apparatus and method for processing multiple telephone calls
    Patent number: 5949762
    Abstract: An apparatus for processing telephone calls is connected between a primary rate ISDN (PRI) telephone line and a host computer. Telephone call data is transferred between the host computer and remote analog, basic rate ISDN (BRI) and/or PRI remote sites. The apparatus includes a digital signal processor that can run multiple signal processing sessions simultaneously and a control processor that can run multiple control processing sessions simultaneously. The apparatus can therefore process multiple telephone calls of one or more types simultaneously.
    Type: Grant
    Filed: July 25, 1996
    Date of Patent: September 7, 1999
    Assignee: Telebit Corporation
    Inventors: Douglas E. Green, Kenneth D. Jones, Rick Peralta, Frank O. Voellmann, Bruce Osler, Grant Grummer