Patents by Inventor Sudheer Vemula

Sudheer Vemula 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).

  • Techniques for measuring phases of periodic signals
    Patent number: 8154328
    Abstract: A phase detector circuit generates a phase comparison signal based on a phase difference between first and second periodic signals during a test mode. Phases of the first and the second periodic signals do not change in response to variations in a signal generated by the phase detector circuit during the test mode. A lock generation circuit generates an output signal based on the phase comparison signal that indicates if the first and the second periodic signals are within a lock window of the lock generation circuit. The lock window of the lock generation circuit changes in response to a variation in a control signal.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: April 10, 2012
    Assignee: Altera Corporation
    Inventor: Sudheer Vemula