Patents by Inventor Jacques-Louis Combes

Jacques-Louis Combes 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).

  • Checkpointing mechanism for fault-tolerant systems
    Patent number: 5235700
    Abstract: A device which switches data processing from an active processor, about to fail, to a back-up processor includes a memory change detector which captures memory changes in the memory of the active processor and a mirroring control circuit which causes the memory changes when committed by establishing recovery point signals generated by the active processor to be dumped into the memory of the back-up processor so that the back-up processor resumes operation of the active processor from the last established recovery point.
    Type: Grant
    Filed: January 16, 1991
    Date of Patent: August 10, 1993
    Assignee: International Business Machines Corporation
    Inventors: Haissam Alaiwan, Jean Calvignac, Jacques-Louis Combes, Andre Pauporte, Claude Basso, Francois Kermarec