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:
Feb. 12, 2008
Filed:
Dec. 13, 2004
Hideki Sakata, Kawasaki, JP;
Tatsumi Nakada, Kawasaki, JP;
Eiki Ito, Kawasaki, JP;
Akira Nodomi, Kawasaki, JP;
Hideki Sakata, Kawasaki, JP;
Tatsumi Nakada, Kawasaki, JP;
Eiki Ito, Kawasaki, JP;
Akira Nodomi, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A cache control method controls data sharing conditions in a processor system having multi-level caches that are in an inclusion relationship. The cache control method indexes an upper level cache by a real address and indexes a lower level cache by a virtual address, and prevents a real address that is referred by a plurality of different virtual addresses from being registered a plurality of times within the same cache. A plurality of virtual addresses are registrable within the upper level cache, so as to relax the data sharing conditions.