Patents by Inventor John Albert Lunsford

John Albert Lunsford 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).

  • Flywheel timing generation method and apparatus for TDMA satellite communications system
    Publication number: 20020163940
    Abstract: In a satellite communications system, a flywheel timing value generating method includes generating flywheel timing values based on a satellite drift over a predetermined time. This drift can be a satellite drift in the north/south direction, measured over a sidereal day. By measuring and recording prior drift history in a normal operation, predicted receive and transmit delay times are calculated in order to generate a start of receive control frame and a start of transmit control frame used in a flywheel operation.
    Type: Application
    Filed: March 20, 2001
    Publication date: November 7, 2002
    Inventors: Junghoon Lee, Tzeta Tsao, Lan Ngoc Nguyen, John Albert Lunsford
  • Output buffer synchronizing circuit having selectively variable delay means
    Patent number: 4079456
    Abstract: Output buffer synchronizing circuit having selectively variable delay means to compensate for different output delays of a processor when the latter operates in different modes. A buffer clock is not only synchronized with the processor clock but also switched in frequency only when in proper phase therewith by delaying a reference signal by kT.sub.R /N, where N is the ratio of the reference period to the processor clock period, T.sub.R is the reference period, and k is a selectable integer such that 0 .ltoreq. k - N.ltoreq.1.
    Type: Grant
    Filed: January 24, 1977
    Date of Patent: March 14, 1978
    Assignee: RCA Corporation
    Inventors: John Albert Lunsford, Lloyd William Martinson