Patents by Inventor Philippe Dalmas

Philippe Dalmas 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).

  • Terminal adapter having a multiple HDLC communication channels receiver for processing control network management frames
    Patent number: 5043989
    Abstract: A terminal adapter for a telecommunication network having a receiver for multiple HDLC communication channels. The receiver includes a BCC calculator for computing and checking the validity of a received HDLC CNM frame. The terminal adapter further includes a device for detecting the reception of a specific CNM header included in a CNM frame on any of the HDLC communication channels and responsive to the detection for setting the BCC calculator to a predefined state. The latter state corresponds to the state of the BCC calculator after a computation of BCC for the specific CNM header. Therefore the BCC calculator can proceed with computation of said BCC for the CNM frame.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: August 27, 1991
    Assignee: International Business Machines Corp.
    Inventors: Philippe Dalmas, Daniel Esteban, Jean-Francois Le Pennec, Patrick Michel, Philippe Therias