Patents by Inventor Francois Behague

Francois Behague 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).

  • Group of terminal units for a digital exchange
    Patent number: 4499575
    Abstract: A group of terminal units (GUT) for a digital exchange having distributed control residing in control means comprising microprocessor control units (UC) which are interconnected by means of the exchanges' time switching network (RXA to RXD). The control units UC are connected to each other by a duplicated point-to-point link (RIT1, RIT2) and to the switching network by a coupler (AM) which is provided with a send/receive circuit that operates using a semaphore procedure. Each of the terminal units (UT) includes a control microprocessor (mp) connected to the switching network by a send-receive circuit (ER) using a semaphore, or question and answer, procedure. The terminal units (UT) are controlled by the control units (UC) by interchanging messages using a common procedure for all the terminal units. These messages are interchanged over channels in the links that make up the switching network of the exchange.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: February 12, 1985
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel
    Inventors: Bernard Dupuis, Francois Behague