The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 1993
Filed:
Jan. 16, 1991
Haissam Alaiwan, Cagnes sur Mer, FR;
Jean Calvignac, La Gaude, FR;
Jacques-Louis Combes, La Colle sur Loup, FR;
Andre Pauporte, La Colle sur Loup, FR;
Claude Basso, Nice, FR;
Francois Kermarec, Antibes, FR;
International Business Machines Corporation, Armonk, NY (US);
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.