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. 12, 2013
Filed:
Aug. 19, 2008
Shuji Yamamura, Kawasaki, JP;
Mikio Hondou, Kawasaki, JP;
Iwao Yamazaki, Kawasaki, JP;
Toshio Yoshida, Kawasaki, JP;
Shuji Yamamura, Kawasaki, JP;
Mikio Hondou, Kawasaki, JP;
Iwao Yamazaki, Kawasaki, JP;
Toshio Yoshida, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A cache memory having a sector function, operating in accordance with a set associative system, and performing a cache operation to replace data in a cache block in the cache way corresponding to a replacement cache way determined upon an occurrence of a cache miss comprises: storing sector ID information in association with each of the cache ways in the cache block specified by a memory access request; determining, upon the occurrence of the cache miss, replacement way candidates, in accordance with sector ID information attached to the memory access request and the stored sector ID information; selecting and outputting a replacement way from the replacement way candidates; and updating the stored sector ID information in association with each of the cache ways in the cache block specified by the memory access request, to the sector ID information attached to the memory access request.