Patents by Inventor Ian Perryman

Ian Perryman 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).

  • Method and apparatus for input-buffered asynchronous transfer mode switching
    Patent number: 5126999
    Abstract: An ATM packet switching system has output segregated input buffers, which are operated on a realtime by crosspoint selection circuits implementing a combined buffer fill/age algorithm to come up with a new selection every packet cycle.
    Type: Grant
    Filed: August 29, 1989
    Date of Patent: June 30, 1992
    Assignee: Northern Telecom Limited
    Inventors: Ernst A. Munter, Ian Perryman