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:
Apr. 04, 2006
Filed:
Aug. 26, 2002
Hidetaka Magoshi, Palo Alto, CA (US);
Hidetaka Magoshi, Palo Alto, CA (US);
Sony Computer Entertainment Inc., Foster City, CA (US);
Abstract
Methods and apparatus for controlling hierarchical cache memories permit: controlling a first level cache memory including a plurality of cache lines, each cache line being operable to store an address tag and data; controlling a next lower level cache memory including a plurality of cache lines, each cache line being operable to store an address tag, status flags, and data, the status flags of each cache line including an L-flag; and setting the L-flag of a given cache line of the next lower level cache memory to indicate whether or not a corresponding one the of the cache lines of the first level cache memory has been refilled with a copy of the data stored in the given cache line of the next lower level cache memory.