Patents by Inventor Mark Astridge

Mark Astridge 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).

  • Wireless location system
    Patent number: 5890068
    Abstract: The position of a Wireless Transceiver (WT) is estimated using the Time Of Arrival (TOA) at several Monitoring Sites (MS) of the signal transmitted by the WT. Several sites are used to solve for the coordinates of the WT using hyperbolic trilateration. A time reference is used to synchronize the Monitoring Sites (MS). Super-Resolution (SR) techniques are applied to increase the resolution of the TOA estimate obtained via correlation of the received signal at each MS. SR techniques can improve the TOA resolution substantially.
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: March 30, 1999
    Assignee: Cell-Loc Inc.
    Inventors: Michel T. Fattouche, Richard W. Klukas, Andrew L. Borsodi, Mark Astridge, Gerard J. Lachapelle, Hatim Zaghloul