Patents by Inventor Shawn Patrick McDowell

Shawn Patrick McDowell 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 apparatus for the reliable transition of status signals from an interface device when using a localized sampling architecture
    Patent number: 6345052
    Abstract: Method and apparatus are provided for guaranteeing that transmit cell available signals transmitted from an ATM-PHY interface device conform to a communication protocol. A previous transmit cell available signal from the previous clock cycle is stored and a transmit status signal and a transmit enable signal for the current clock cycle are sampled. One of the transmit status signal and the previous transmit cell available signal are selected as the new transmit cell available signal based upon the state of the transmit enable signal and the transmit status signal.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: February 5, 2002
    Assignee: PMC-Sierra, Ltd.
    Inventors: Richard Tsz-Shiu Tse, Shawn Patrick McDowell