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:
Jan. 04, 2005
Filed:
Aug. 30, 2001
Applicants:
Yoshiki Murakami, Hadano, JP;
Masaru Koyanagi, Hadano, JP;
Hideya Akashi, Kunitachi, JP;
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1200 ;
U.S. Cl.
CPC ...
Abstract
A cache system comprising a cache tag bufferfor storing a part of a cache tag memory. When a memory processing request is issued from a processor, a cache control meansretrieves both of the cache tag memoryand the cache tag buffer. If a target cache block is present in the cache tag buffer, then, without waiting for a retrieval result of the cache tag memory, the cache control circuitaccesses the cache data memoryusing information of the cache block.