Patents by Inventor Horst L. Truestedt

Horst L. Truestedt 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).

  • Patent number: 5535035
    Abstract: A communications method and an optical fiber ring communications system including multiple devices or ports are provided. The optical fiber ring communications system includes first and second optical link modules (OLMs) coupled to each of the multiple ports. First and second optical fibers extend between adjacent ports in the ring communications system and are coupled at each end to one of the first and second OLMs. The first and second optical fibers define dual fiber channel arbitrated loops during normal operation in the system. If an optical fiber link is disconnected between two ports, then the communications system is configured as a single arbitrated loop. Alternatively, when the communications system includes a ruler port and subject ports, then the communications system can be configured as two separate loops coupled by the ruler port if an optical fiber link is disconnected between two ports.
    Type: Grant
    Filed: September 15, 1994
    Date of Patent: July 9, 1996
    Assignee: International Business Machines Corporation
    Inventors: Steven M. DeFoster, Horst L. Truestedt, Raymond J. Thatcher