Patents by Inventor David A. Poppe

David A. Poppe 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).

  • Switching control for multiple stage time division switch
    Patent number: 4633461
    Abstract: A multi-stage time division switch interconnects processors communicating over one or more channels on time division lines. One of the processors is designated as a common processor to provide the switching "mapping" information for the various stages of the switch sending the switching information to the memory and logic of each switched stage over dedicated channels which include channels on the time division line emanating from the common processor and time division channels which pass through several switches until the memory of the applicable switch is accessed.
    Type: Grant
    Filed: July 8, 1985
    Date of Patent: December 30, 1986
    Assignees: AT&T Information Systems Inc., Bell Telephone Laboratories, Incorporated
    Inventors: Randall G. Banton, Rajiv Bhatia, Donald B. Grust, David R. Johnson, Joseph G. Kneuer, Kuang-Shin Lin, Henry S. McDonald, David A. Poppe, Jeffrey W. Reedy, Richard T. Wurth