Patents by Inventor Claude Gergaud

Claude Gergaud 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: 4630262
    Abstract: A method of transmitting digitized voice signals as packets of bits in a digital transmission network to which a plurality of terminals acting as sources of voice signals are attached. The method includes, at the transmitting end and for each source, the steps of: a dividing the signal into successive, digitally-coded segments; performing a so-called source activity detection; and assembling the bits resulting from the coding operation into packets, each packet being provided with a header containing, in particular, a parity bit whose logic value is modified whenever an inactivity or long pause is detected. At the receiving end, detection of a change in the value of said parity bit causes the delivery of a packet of bits to the decoder/synthesizer to be delayed by a given time interval called retention delay.
    Type: Grant
    Filed: May 20, 1985
    Date of Patent: December 16, 1986
    Assignee: International Business Machines Corp.
    Inventors: Paul Callens, Claude Galand, Claude Gergaud, Philippe Noailly, Pierre Secondo