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:
Nov. 19, 2013
Filed:
Sep. 01, 2011
Applicant:
Takatoshi Fukuda, Kawasaki, JP;
Inventor:
Takatoshi Fukuda, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 29/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A cache memory is operated in a write through system, and an operation to be performed when a cache mishit occurs is performed when corresponding data is not stored in the cache memory, or only when an error occurs although there is the data. Then, a bit indicating that a soft error has occurred before is set in the cache memory, and when the bit indicates '1' and if an error has occurred again, it is determined that a hardware error has occurred, and an interrupt is generated in the CPU. The bit is to be reset at time intervals sufficiently shorter than the frequency at which it is considered that a soft error occurs.