Patents by Inventor Mark B. Tweddle

Mark B. Tweddle 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).

  • Optical processing in asynchronous transfer mode network
    Patent number: 5619360
    Abstract: An optical code recognition unit (OCRU) for recognizing a predetermined n-bit optical code has an n-way splitter having an input and n parallel outputs. A plurality of combiners are associated with the splitter outputs, and a respective gate is controlled by the output of each of the combiners. Each of the splitter outputs is subject to a different delay of from 0 to (n-1) bit periods, and each combiner receives an input from at least one of the splitter outputs. The OCRU is such that all the gates are turned on if a predetermined optical code is applied to the splitter input.
    Type: Grant
    Filed: September 8, 1994
    Date of Patent: April 8, 1997
    Assignee: British Telecommunications PLC
    Inventors: Ian W. Marshall, Mark B. Tweddle