Patents by Inventor Jean Chapelain

Jean Chapelain 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).

  • Decentralized arbitration device for several processing units of a multiprocessor system
    Patent number: 4511959
    Abstract: The decentralized arbitration device of the invention comprises an arbitration unit associated with each processing unit. This arbitration unit comprises an individual elementary arbitrator and a level elementary arbitrator. Their outputs are connected to a comparator which compares their output signals with the code of the unit considered, which code is supplied by a coding identification circuit. The individual priority request terminals of the units in the same level are connected together and the level priority request terminals of all the units are connected together.
    Type: Grant
    Filed: November 4, 1981
    Date of Patent: April 16, 1985
    Assignee: Thomson-CSF - Telephone
    Inventors: Alain Nicolas, Jean Chapelain