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:
Dec. 22, 2009
Filed:
Mar. 22, 2006
Keisuke Kaneko, Osaka, JP;
Keisuke Kaneko, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An object of the present invention is to reduce power consumption accompanying a cache hit/miss determination. To achieve this object, when accessing a cache memory provided with a means for setting whether a cache refill to each way in the cache memory is allowed for each CPU or each thread, first, a first cache hit/miss determination is performed only on the way for which a refill is set to be allowed (Steps-and-), and if the first cache hit/miss determination results in a cache hit, the access is ended (Step-). In the case of a cache miss, the way for which a refill is not set to be allowed is accessed (Step-), or a second hit/miss determination is performed by accessing all the ways (Step-).