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. 15, 2011
Filed:
Jul. 15, 2008
Applicants:
Souta Kusachi, Kawasaki, JP;
Kuniki Morita, Kawasaki, JP;
Masaki Ukai, Kawasaki, JP;
Tomoyuki Okawa, Kawasaki, JP;
Inventors:
Souta Kusachi, Kawasaki, JP;
Kuniki Morita, Kawasaki, JP;
Masaki Ukai, Kawasaki, JP;
Tomoyuki Okawa, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 12/00 (2006.01); G06F 12/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A cache controller controls at least one cache. The cache includes ways including a plurality of blocks that stores therein entry data. A writing unit writes degradation data to a failed block. The degradation data indicates that the failed block is in a degradation state. A reading unit reads entry data from a block. A determining unit determines, if the entry data obtained by the reading unit includes the degradation data, that the block is in the degradation state.