Patents by Inventor Walter Bridgewater

Walter Bridgewater 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).

  • Method and device for selecting one of multiple clock signals based on frequency differences of such clock signals
    Patent number: 7343510
    Abstract: A clock detection and selection circuit (100) can include a first counter (102-0) that generates a first count value CNT1 according to a first clock signal CLK1 and a second counter (102-1) that generates a second count value CNT2 according to a second clock signal CLK2. First separation-detect logic (102-0) and second separation-detect logic (102-1) determine if a pre-specified difference exists between a first count value (CNT1/CNT1?) and second count value (CNT2/CNT2?). According to such determinations, separation information (INF—1 and INF—2) can be generated indicating which clock signal (CLK1 or CLK2) is faster. Selection logic (106) can select a faster of the clock signals (CLK1 or CLK2) if the separation information values confirm one another.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: March 11, 2008
    Assignee: Cypress Semiconductor Corporation
    Inventors: Mark Ross, S. Babar Raza, Dimitris Pantelakis, Anup Nayak, Walter Bridgewater