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.

Date of Patent:
Feb. 28, 2012

Filed:

Sep. 28, 2007
Applicants:

Takahito Hirano, Kawasaki, JP;

Takashi Miura, Kawasaki, JP;

Iwao Yamazaki, Kawasaki, JP;

Inventors:

Takahito Hirano, Kawasaki, JP;

Takashi Miura, Kawasaki, JP;

Iwao Yamazaki, Kawasaki, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 29/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A correct error correction code can be generated even if a RAM error occurs before writing store data in cache memory (RAM) after confirming that cache line data for storage includes no errors. Before writing the store data, cache line data for storage is stored in a register, the store data is written to the cache memory, the stored contents of the register are merged with the store data, and an error correction code is generated for a result of the merger.


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