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:
Oct. 28, 2003
Filed:
Mar. 19, 2001
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/208 ;
U.S. Cl.
CPC ...
G06F 1/208 ;
Abstract
A cache memory unit that preferentially stores specific lines at the cache memory, according to the program nature, dynamically changes the priority ranks of lines, and increases the cache memory hit rate. For this purpose, the lines to be accessed by a processor are divided into groups and definitions of the groups are set in a group definition table; a policy by which to store lines belonging to the groups into the cache memory is set in a policy table; and storing lines into the cache memory is executed, according to the group definitions and the policy of storing set in the tables.