Patents by Inventor Hermann Tjabben

Hermann Tjabben 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).

  • Communication system
    Patent number: 5673261
    Abstract: A communication system including a switching system which comprises a switching unit and a control circuit. The control circuit comprises a transmitting-side signalling handler procedure (ASH) for managing the connection and for exchanging messages with other procedures, and a receiving-side signalling handler procedure (BSH) for managing the connection and for exchanging messages with other procedures. For providing optional external services, the switching unit is coupled to a service control system. Furthermore, the control circuit comprises an additional procedure (ZUSA) for exclusively exchanging messages with the transmitting-side and the receiving-side signalling handler procedures (ASH, BSH).
    Type: Grant
    Filed: August 29, 1995
    Date of Patent: September 30, 1997
    Assignee: U.S. Philips Corporation
    Inventors: Hermann Tjabben, Stephan Abramowski, Armand M. M. Lelkens