Patents by Inventor Keith E. Atwell

Keith E. Atwell 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).

  • Quasi-random digital sequence detector
    Patent number: 5072448
    Abstract: Errors in a predetermined digital sequence are detected by utilizing a detector which includes memory elements such as a series shift register, and logic gates for detecting a predetermined subsequence. Errors are detected by comparing each bit in the data stream with the output of the memory. Logic gates inhibit the detection of an error in response to the subsequence detection.
    Type: Grant
    Filed: November 2, 1989
    Date of Patent: December 10, 1991
    Assignee: Universal Data Systems, Inc.
    Inventors: Keith E. Atwell, Harold A. Vaghy