Patents by Inventor Joseph Jason Hughes

Joseph Jason Hughes 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).

  • Circuit and method of a three state phase frequency lock detector
    Patent number: 6404240
    Abstract: A three state phase frequency lock detector (14) is provided which monitors the UP and DOWN phase pulses generated by a three state phase frequency detector (PFD). The lock detector (14) asserts the lock detect signal when the rising edges of the UP and DOWN phase pulses are phase aligned and un-asserts the lock detect signal for all other relative phases of the UP and DOWN phase pulses. Lock detector (14) is capable of reporting the lock detect signal for each cycle of the UP and DOWN pulses.
    Type: Grant
    Filed: October 30, 2000
    Date of Patent: June 11, 2002
    Assignee: Semiconductor Components Industries LLC
    Inventors: Harsha Sharath Hakkal, Joseph Jason Hughes