Patents by Inventor Bradley E. Bailey

Bradley E. Bailey 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).

  • Synchronous quad clock domain system having internal and external sample logic units matching internal and external sample signatures to a pattern corresponding to a synchronous multiple ratio
    Patent number: 6449728
    Abstract: A synchronous quad clock domain system synchronizes an external primary and secondary clock (130, 132) with an internal primary and secondary clock (134, 136). The rising edge of the internal primary and secondary clock signals are matched and a synchronous multiple ratio is applied to the internal primary clock signal to produce the internal secondary clock signal. The phase of the internal and external secondary clock signals are matched. The external secondary clock signal is sampled to produce a external sample signature and the external sample signature is matched to a pattern corresponding to the synchronous multiple ratio to produce an external clock cycle signal. The internal secondary clock signal is also sampled to produce an internal clock cycle signal. The internal and external clock cycle signals are compared and a phase adjust signal is provided to match the phase of the internal and external secondary clock signals.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: September 10, 2002
    Assignee: Motorola, Inc.
    Inventor: Bradley E. Bailey