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. 19, 2003
Filed:
Nov. 12, 1999
Maurice Schlumberger, Menlo Park, CA (US);
Serge Shats, Palo Alto, CA (US);
Maxtor Corporation, Longmont, CO (US);
Abstract
Cache history is extended by retaining access history information for storage locations in the underlying level that are no longer represented in the cache. A cache is provided having a plurality of cache entries. Each of the cache entries has cache entry address information. A cache extender is provided having, a plurality of extender entries. Each extender entry has an extender address portion and an extender auxiliary portion. Each extender address portion may have extender entry address information. The cache entry address information of each of the cache entries relates to the extender entry address information of one among the extender address portions, and a storage area of an underlying level of a memory hierarchy is related to the extender entry address information of each of the extender address portions. Additionally, each of the extender auxiliary portions has historical information.