Patents by Inventor Alain Rayher

Alain Rayher 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).

  • Impedance adapter for a high-bandwidth transmission channel of a copper-wired terminal system
    Patent number: 7558385
    Abstract: An impedance matcher for matching the impedance of a high bit rate transmission channel of a copper-wired terminal installation comprising a high bit rate x-DSL modem (M) and a jack (P; P1; P2, P3), which automatically matches the impedance of the high bit rate transmission channel according to whether a modem is plugged into the jack of the installation or not. The impedance matcher comprises an adjustment module (10) adapted to insert a terminating impedance into the jack (P; P1, P2, P3) when it is not connected to said high bit rate modem (M), and a coupling module (20) adapted to be combined with said adjustment module (10) when said high bit rate modem (M) is connected to said jack (P; P1, P2, P3) to transform the impedance inserted into said jack to make it transparent to high bit rate transmission of broadband services.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: July 7, 2009
    Assignee: France Telecom
    Inventors: Alain Rayher, Hubert Mariotte