Patents by Inventor William R. MacIsaac

William R. MacIsaac 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).

  • Generation of trigger signals
    Patent number: 4998263
    Abstract: Apparatus for generating trigger signals for a serial stream of bits which has continuously repeating patterns and which has been formed by serializing a plurality of parallel streams, for example, a maximal length PRBS. The apparatus operates by identifying with which parallel stream cycle a trigger signal should occur and with which bit of the parallel stream in that cycle the trigger signal should be associated. Embodiments constructed in accordance with the invention can operate mainly at the clock rate of the parallel streams, that is, the lower clock rate.
    Type: Grant
    Filed: March 4, 1988
    Date of Patent: March 5, 1991
    Assignee: Hewlett-Packard Co.
    Inventors: James P. Kendall, Martin P. Murphy, William R. MacIsaac