Patents by Inventor Pierre D. Valle

Pierre D. Valle 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).

  • Method of compensation of intermodulation noise and devices for the implementing thereof
    Patent number: 4131859
    Abstract: The present invention relates to amplifier chains such as are found, for example, in carrier analog transmission by cable with repeaters. Intermodulation noise is reduced by opposing an intermodulation noise generated by a compensation source from the signal available at the chain output to the intermodulation noise generated by the chain. It applies in particular to cable transmission links with repeaters to improve the signal-to-noise ratio thereof.
    Type: Grant
    Filed: October 4, 1977
    Date of Patent: December 26, 1978
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel
    Inventor: Pierre D. Valle