Patents by Inventor Pierre Roullet

Pierre Roullet 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).

  • Patent number: 6370366
    Abstract: A communication device communicates with a station and includes a receiver which receives speech signal frames from the station. The speech signal frames have speech signals. The communication device further includes a counter and an attenuation circuit. The counter counts the number of bad frames of the received speech signal frames. The attenuation circuit diminishes the amplitude of the speech signals when the count of the counter is higher than one indicating more than one bad frame is received. The station is either connected to a switched network or is a satellite station.
    Type: Grant
    Filed: December 8, 1998
    Date of Patent: April 9, 2002
    Assignee: U.S. Philips Corporation
    Inventor: Pierre Roullet