Patents by Inventor Francois Bonneau

Francois Bonneau 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).

  • Hands-free telephone apparatus
    Patent number: 5255316
    Abstract: Digital-type hands-free telephone apparatus is provided including a microcontroller, an audio board and a COFIDEC circuit, in which the microcontroller permanently calculates the average values of 16 successive samples on each one of the send and receive channels and deduces therefrom which channel is to be enabled while attenuating the other using tables provided in ROM memory.
    Type: Grant
    Filed: July 31, 1991
    Date of Patent: October 19, 1993
    Assignee: Alcatel N.V.
    Inventors: Jean-Pierre Poirier, Francois Bonneau, Denis Dutey