Patents by Inventor Alan D. Hemsworth

Alan D. Hemsworth 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).

  • Receiver word alignment for digital transmission systems using a redundant ternary line code
    Patent number: 4244052
    Abstract: An arrangement and method of aligning a digital transmission system receiver to an incoming redundant ternary line signal (6B4T code) which combines detection of an excessive number of code violations with detection of a large number of prohibited ternary words (i.e. redundant ternary words not allocated to a binary equivalent. This results in elimination of spurious realignments of the receiver coupled with rapid realignment when necessary with no disturbance to the output timing during realignment.
    Type: Grant
    Filed: March 1, 1979
    Date of Patent: January 6, 1981
    Assignee: International Standard Electric Corporation
    Inventor: Alan D. Hemsworth