Patents by Inventor Yvan Guilbaud

Yvan Guilbaud 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).

  • Telecommunications system, location method and mobile station for such a system
    Patent number: 6249679
    Abstract: The invention relates to a radio transmission system comprising base radio stations (3) which form a radio coverage area (1) in which a mobile station (4) is suitable for supplying to the system a position indication thanks to a location method. If a location attempt fails at a given instant, the mobile station (4) having an insufficient radio coverage at that instant can no longer receive any communication during a certain period of time. The invention provides to shorten this period of time by equipping the mobile with means for evaluating the quality of the radio coverage experienced by the mobile station and for automatically starting a new location attempt the moment the quality of the radio coverage is sufficient.
    Type: Grant
    Filed: July 21, 1998
    Date of Patent: June 19, 2001
    Assignee: U.S. Philips Corporation
    Inventors: Yvan Guilbaud, Franck Legoupil