Patents by Inventor Laurent Zibell

Laurent Zibell 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).

  • Locatable mobile cellular telephony terminal
    Patent number: 6061021
    Abstract: The mobile cellular telephony terminal includes a radio transmitter/receiver (1) for communicating with base stations of a cellular network, measuring the Doppler velocity of the transmissions originating from the stations and accordingly operating circuits (2) for estimating the velocity of the terminal, by composition of the Doppler velocities, and updating circuits (4, 5) are provided for updating an inertial unit (10) supplying the radio circuit (1) with the position of the terminal, by comparison between a terminal velocity supplied by the unit (10) and the estimated velocity.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: May 9, 2000
    Assignee: Sagem SA
    Inventor: Laurent Zibell