Patents by Inventor Charles E. Polk

Charles E. Polk 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).

  • Contention resolution for a shared access bus
    Patent number: 5751974
    Abstract: Data communication stations 10, 12, 14 are connected by way of a shared bus 15 common to all the communication stations. When two stations attempt to access the shared bus simultaneously, a conflict resolution method if used to determine which of the two stations is allowed access to the bus 15. Each station seeking access to the bus 15 serially transmits its address. The priority of the stations is determined, and the station with priority is given access to the bus 15.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: May 12, 1998
    Assignee: Motorola, Inc.
    Inventors: Steven R. Blackwell, Charles E. Polk, Jason N. Morgan