Patents by Inventor Carl William Seymour

Carl William Seymour 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).

  • Audio coding systems and methods
    Publication number: 20040019492
    Abstract: An audio signal is decomposed into lower and upper sub-band and at least the noise component of the upper sub-band is encoded. At the decoder the audio signal is synthesized by a decoding means which utilizes a synthesized noise excitation signal and a filter to reproduce the noise component in the upper sub-band.
    Type: Application
    Filed: July 18, 2003
    Publication date: January 29, 2004
    Applicant: Hewlett-Packard Company
    Inventors: Roger Cecil Ferry Tucker, Carl William Seymour, Anthony John Robinson
  • Audio coding systems and methods
    Patent number: 6675144
    Abstract: An audio signal is decomposed into lower and upper sub-band and at least the noise component of the sub-band is encoded. At the decoder the audio signal is synthesised by a decoding means which utilises a synthesised noise excitation signal and a filter to reproduce the noise component in the upper sub-band.
    Type: Grant
    Filed: February 16, 2000
    Date of Patent: January 6, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Roger Cecil Ferry Tucker, Carl William Seymour, Anthony John Robinson