Patents by Inventor Jingsong Cai

Jingsong Cai 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).

  • Apparatus and method for fault tolerant operation of a multiprocessor data processing system
    Patent number: 5919266
    Abstract: A fault tolerant multiple processor data processing system is described. The system includes a number of processors linked together in a network. One processor is designated the master processor and coordinates the operation of all of the processors. The network is coupled to a number of memory devices which store information which is utilized by the processors. The apparatus includes a redundant mechanism for identifying a failure of a processor. If the master processor fails, a new master processor is selected, in a dynamic manner, from the remaining operative processors. The selection of a new master processor is based upon a contention operation in which the operative processors contend to become the new master processor.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: July 6, 1999
    Assignee: Centigram Communications Corporation
    Inventors: Raman K. Sud, Chris Koverman, Jingsong Cai, Thomas Hill