Patents by Inventor Douglas A. Carlone

Douglas A. Carlone 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).

  • Variable hangover time in a voice activity detector
    Patent number: 5410632
    Abstract: Variable hangover time is provided for a speech coder (105). Voice activity within a speech message is detected (209) using a voice activity detector (VAD) (107), and a signal-to-noise ratio is calculated. A variable hangover time is calculated (215) and appended to the time in which voice activity is detected, producing an extended voice detection period. The speech coder (105) is enabled only during the extended voice detection period, thus saving power.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: April 25, 1995
    Assignee: Motorola, Inc.
    Inventors: Daehyoung Hong, Douglas A. Carlone