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:
Mar. 03, 2009
Filed:
Dec. 03, 2007
Applicants:
Said A. Ahmad, Tucson, AZ (US);
Michael T. Benhase, Tucson, AZ (US);
William D. Williams, Tucson, AZ (US);
Inventors:
Said A. Ahmad, Tucson, AZ (US);
Michael T. Benhase, Tucson, AZ (US);
William D. Williams, Tucson, AZ (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 12/00 (2006.01); G06F 13/00 (2006.01); G06F 13/28 (2006.01); G06F 15/177 (2006.01); G06F 17/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
A data coherence system includes a generation number written to a data track of a logical sub-system. The generation number is compared to a corresponding generation number in a processing device when it is initialized. If the two generations numbers are the same, the generation numbers are incremented and saved. If not, cache associated with the logical sub-system residing within the processing device is erased and the generation numbers are reset.