Patents by Inventor James A. Cobban

James A. Cobban 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).

  • Single-route broadcast for LAN interconnection
    Patent number: 5430728
    Abstract: In LAN interconnect, it is necessary to perform route discovery to locate a destination device. A novel method of selecting designated source routing bridges and a new single-route broadcast scheme using those selected bridges are disclosed. The invention makes use of intelligent source routing bridges which connect LAN segments. In order to configure a single-route broadcast path to each connected LAN, a selection procedure is performed among source routing bridges according to the present invention to ensure that there is only one path between two connecting LAN segments. In one embodiment, a packet switching network is used as a WAN which interconnects many LAN segments by way of a virtual ring created in the WAN and the present invention chooses only one path between the individual LAN segment and the virtual ring.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: July 4, 1995
    Assignee: Northern Telecom Limited
    Inventors: N. Anantha Narayanan, James A. Cobban, Pierre Cousineau, Wing K. Ling