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:
Aug. 24, 2010
Filed:
Dec. 01, 2004
Makoto Hataida, Kawasaki, JP;
Takao Matsui, Kawasaki, JP;
Daisuke Itoh, Kawasaki, JP;
Seishi Okada, Kawasaki, JP;
Takaharu Ishizuka, Kawasaki, JP;
Makoto Hataida, Kawasaki, JP;
Takao Matsui, Kawasaki, JP;
Daisuke Itoh, Kawasaki, JP;
Seishi Okada, Kawasaki, JP;
Takaharu Ishizuka, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A cache-status maintaining unit stores address information of data stored in each entry of a cache memory, and maintains a status of each entry as any one of 'strongly modified', 'weakly modified', “shared”, and “Invalid”. A data-fetching-procedure selecting unit selects, upon receiving a data read request, at least one data fetching procedure based on the address information and the status. A read-data delivering unit selects latest data from among the data fetched, and delivers the latest data to a processor that issued the data read request. A cache-status updating unit updates, when registering the address information of the data, updates the status of the entry based on a type of the data read request.