Patents by Inventor Steven Michael DeFoster

Steven Michael DeFoster 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).

  • Inexpensive two-way communications switch
    Patent number: 5754549
    Abstract: A two-way communications switch is provided that includes a first state machine connected to a first communications ring and a second state machine connected to a second communications ring. The first state machine is capable of transmitting data to the first communications ring and of receiving data from the first communications ring. The second state machine is capable of transmitting the data to the second communications ring and of receiving data from the second communications ring. Logic circuitry selectively connects the first state machine and the second state machine for receiving data from the second communications ring and transmitting data to the first communications ring and for receiving data from the first communications ring and transmitting data to the second communications ring.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: May 19, 1998
    Assignee: International Business Machines Corporation
    Inventors: Steven Michael DeFoster, Horst Lebrecht Truestedt