Patents by Inventor John Douglas Brophy

John Douglas Brophy 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 inband signaling control of vocoder bypass
    Patent number: 6091969
    Abstract: Vocoder bypass is provided using in-band signaling. In preferred embodiments of the present invention, three signaling channels are arranged for transmission within the compressed speech. Each of the signaling channels are communicated at a preferred rate to permit fast, reliable detection of conditions indicating vocoder bypass mode of operation, to negotiate suitable vocoder type if necessary, and to synchronize and communicate compressed speech in a vocoder bypass mode of operation.
    Type: Grant
    Filed: August 21, 1998
    Date of Patent: July 18, 2000
    Assignee: Motorola, Inc.
    Inventors: John Douglas Brophy, James Patrick Ashley, Lee Michael Proctor
  • Method and apparatus for control of vocoder bypass utilizing inband signaling
    Patent number: 6070089
    Abstract: Vocoder bypass is provided using a combination of out-of-band and in-band signaling. In preferred embodiments of the present invention, two signaling channels are arranged for transmission within the compressed speech. Each of the signaling channels are communicated at a preferred rate to permit fast, reliable detection of conditions indicating vocoder bypass mode of operation and to synchronize and communicate compressed speech in a vocoder bypass mode of operation.
    Type: Grant
    Filed: January 12, 1999
    Date of Patent: May 30, 2000
    Assignee: Motorola, Inc.
    Inventors: John Douglas Brophy, James Patrick Ashley, Lee Michael Proctor, Krsman Martinovich