Patents by Inventor Curtis B. Downing

Curtis B. Downing 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).

  • Remote processor crash recovery
    Patent number: 4589090
    Abstract: The present invention is a multiprocessor machine control system in which the failure of one of the processors to reset can be ignored by the rest of the control system. In particular, a software crash or other abnormality on one of the processors will generate a reset procedure. If the processor cannot be reset, this will indicate a processor board failure such as a hardware failure. If the processor and its controlled elements are not crucial to the machine operation, then the control wll ignore the failed processor as though it were not in the control system, and continue with machine operation.
    Type: Grant
    Filed: September 21, 1982
    Date of Patent: May 13, 1986
    Assignee: Xerox Corporation
    Inventors: Curtis B. Downing, Stephen P. Wilczek, Richard T. Ziehm, Anthony M. Federico, Raymond R. Husted, Michael E. Edmunds