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. 28, 2012
Filed:
Aug. 27, 2008
Yuji Shirahige, Kawasaki, JP;
Iwao Yamazaki, Kawasaki, JP;
Yuji Shirahige, Kawasaki, JP;
Iwao Yamazaki, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A pre-fetch control apparatus is equipped with a next-line pre-fetch control apparatus. An address overflowed from a pre-fetch address queueis stored in the next-line pre-fetch control apparatus. An access address issued by a processor unit and stored in a registeris compared with the address stored in the next-line pre-fetch control apparatusand, if the two addresses are identical, a value obtained by adding a data block size λ of cache memory to the address stored in the next-line pre-fetch control apparatusis stored again in the next line pre-fetch control apparatus. When the address issued by the processor unit is identical with that stored in the next-line pre-fetch control apparatusa predetermined number of times, the occurrence of continuous accesses is presumed and pre-fetching is carried out for all addresses that have not hit the pre-fetch address queue.