Patents by Inventor John W. Waddill

John W. Waddill 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).

  • Digital implementation of parity monitor and alarm
    Patent number: 4291403
    Abstract: A digital bit error violation rate circuit monitors the bit error integrity of a data stream and generates an alarm if the bit error rate exceeds an established bit error integrity threshold.
    Type: Grant
    Filed: May 22, 1979
    Date of Patent: September 22, 1981
    Assignee: Rockwell International Corporation
    Inventors: John W. Waddill, Bahram Pourmand
  • Testing apparatus
    Patent number: 4071700
    Abstract: Apparatus for testing the operability of a signal translation means which passes signal information containing a definable and repeatable characteristic such as a synchronization signal through the use of a spare similar device and a demodulating device which provides outputs upon detecting the signal passed by each signal translating device. As illustrated, regular and spare transmit multiplexing devices are used and logic information obtained from a spare receiver is used to indicate a failed condition.
    Type: Grant
    Filed: November 18, 1976
    Date of Patent: January 31, 1978
    Assignee: Rockwell International Corporation
    Inventors: Charles E. Huffman, Robert J. McGuire, John W. Waddill