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:
Nov. 21, 2023
Filed:
Jul. 12, 2022
Applicant:
Fujitsu Limited, Kawasaki, JP;
Inventors:
Shiho Nakahara, Nerima, JP;
Takahide Yoshikawa, Kawasaki, JP;
Assignee:
FUJITSU LIMITED, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/0891 (2016.01); G06F 12/0871 (2016.01); G06F 12/0804 (2016.01);
U.S. Cl.
CPC ...
G06F 12/0891 (2013.01); G06F 12/0804 (2013.01); G06F 12/0871 (2013.01);
Abstract
A semiconductor device includes: a first cache that includes a first memory and rewrite flags that indicate whether rewriting has been performed for each piece of data held in the first memory; and a second cache that includes a second memory and a third memory that has a lower writing speed than the second memory, stores data evicted from the first cache in the second memory when a rewrite flag corresponding to the evicted data indicates a rewrite state, and stores data evicted from the first cache in the third memory when a rewrite flag corresponding to the evicted data indicates a non-rewrite state.