Patents by Inventor Claude J. Champagne

Claude J. Champagne 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).

  • Method of duplex data transmission using a send-and-wait protocol
    Patent number: 4750165
    Abstract: The invention provides a method of communicating data between a pair of transceivers in a full-duplex manner using a send-and-wait data handling protocol. The transceivers are connected by a pair of communication paths and each transceiver is adapted to simultaneously transmit data on one communication path and receive data on the other. Each transducer generates primary and secondary messages and these are multiplexed by injecting the secondary messages into the primary message stream in such a way that the secondary messages are readily differentiated from the primary messages at the receiving transceiver.
    Type: Grant
    Filed: May 6, 1986
    Date of Patent: June 7, 1988
    Assignee: Northern Telecom Limited
    Inventors: Claude J. Champagne, Ernst A. Munter
  • Interface arrangement for a telephone system or the like
    Patent number: 4574375
    Abstract: An interface scheme is described which allows relatively convenient interconnection of, and re-configuration of, circuits for performing operations to digital signals from a bus. In one exemplary embodiment, a parallel bus, eight bits wide, having 320 channels per frame is provided. For each circuit to be connected to the parallel bus a connection memory and an input/output buffer is provided to control the accessing of the parallel bus by each circuit.
    Type: Grant
    Filed: October 12, 1983
    Date of Patent: March 4, 1986
    Assignee: Northern Telecom Limited
    Inventors: Michael F. Kemp, Claude J. Champagne