Patents by Inventor Andrew C. C. Wong

Andrew C. C. Wong 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).

  • Digital Navstar receiver
    Patent number: 4613977
    Abstract: A receiver for a Navstar satellite navigation system wherein the satellite signals are down converted into zero i.f. quadrature signals (70a, 70b) and digitized (71a, 71b). The digitized signals address a PROM (72) together with additional bits representing phase rotation information (74) and locally generated code signals (e,l,p). The PROM is loaded with data in the form of "look-up" tables incorporating combinations of all input signal conditions whereby the combined address signals effect correlation and phase rotation simultaneously of the received signals.
    Type: Grant
    Filed: November 29, 1984
    Date of Patent: September 23, 1986
    Assignee: Standard Telephones and Cables Public Limited Company
    Inventors: Andrew C. C. Wong, Graham R. Fearnhead, Simon J. Gale