Patents by Inventor Norman Eugene Cox

Norman Eugene Cox 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).

  • Next hop resolution protocol cut-through to LANs
    Patent number: 6189041
    Abstract: A method is implemented by which a Logical IP subnetwork attached (LIS) Next Hop Resolution Protocol (NHRP) client or an Emulated LAN (ELAN) subnetwork attached NHRP client in an Asynchronous Transfer Mode (ATM) network can send data to a destination LAN Emulation Client (LEC) on a different ISO layer-3 subnetwork via a data-direct Virtual Channel Connection. The method enables such a IP subnetwork attached NHRP clients to obtain the ATM address corresponding to the destination station by using the vendor-private extension within an NHRP packet. The NHRP client uses the ATM address to build a data-direct VCC over which it unicasts data bound for the destination station. The NHRP client appears to the destination LEC as any other LEC on its ELAN would appear.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: February 13, 2001
    Assignee: International Business Machines Corporation
    Inventors: Norman Eugene Cox, Russell Eugene Gardo, Stephen W. Piucci, Sonia K. Rovner
  • Method and system for distributing network routing functions to local area network stations
    Patent number: 6172981
    Abstract: A route switching layer is provided to end stations on a local area network (LAN) segment between the network layer protocol stack and the LAN adapter device driver. The route switching layer reads the network layer protocol header in a data frame queued for transmission. If the data frame is destined for a station on a different LAN segment, the route switching layer compares the network layer address with entries stored in a local address table. If a match occurs, the route switching layer inserts the corresponding data link layer address from the table in the data link header that is appended to the data frame. The data frame is then transmitted directly from source to destination end station by a hardware switch. If an address table match does not occur, the source station route switching layer sends a query to a route server device for the data link layer address corresponding to the network layer address of the destination end station.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: January 9, 2001
    Assignee: International Business Machines Corporation
    Inventors: Norman Eugene Cox, Kenneth J. Christensen, Jim P. Ervin, Richard Colbert Matlack, Jr.