Patents by Inventor Grant D. Wheeler

Grant D. Wheeler 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 of asynchronously transmitting data between clock domains
    Patent number: 7500132
    Abstract: A method of asynchronously transmitting data from a first clock domain to a second clock domain by transmitting the data from the first domain to a first register; after a first period of time, transmitting the data from the first register to a second register; after a second period of time, transmitting the data from the second register to a third register; and after a third period of time, transmitting the data from the third register to the second clock domain, where the first clock domain operates at a first frequency C1, and the second clock domain operates at a second frequency C2, C1 being faster than C2; and where: the first period of time is determined by C1; and the second and third periods of time are determined by a third frequency C3 that is greater than and a whole number multiple of C2.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: March 3, 2009
    Assignee: International Business Machines Corporation
    Inventors: Anil Pothireddy, Kirtish Karlekar, Grant D. Wheeler