Patents by Inventor Robin D. Roe

Robin D. Roe 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).

  • Patent number: 3936603
    Abstract: A digital phase locked loop is described which includes a first gate through which incoming pulses are passed to subsequent data processing circuits, a second gate through which reference pulses having a predetermined pulse repetition rate equal to the repetition rate of the wanted incoming pulses are fed to a reset input of a counter such that each reference pulse resets the counter to zero, and a clock generator for feeding clock pulses to the counter. The counter is thereby repeatedly stepped through a predetermined cycle, the nominal period of the counter cycle being equal to the nominal period of the reference pulses, and means responsive to the number stored in the counter reaching a first predetermined value then latches both the first and second gates open for a predetermined relatively short period in each counter cycle during which the counter passes through its zero state.
    Type: Grant
    Filed: September 19, 1974
    Date of Patent: February 3, 1976
    Assignee: British Aircraft Corporation Limited
    Inventors: John R. Guppy, Robin D. Roe