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:
Jul. 15, 2025
Filed:
Mar. 04, 2022
Sony Group Corporation, Tokyo, JP;
Yuuichi Nakamura, Tokyo, JP;
Sony Group Corporation, Tokyo, JP;
Abstract
An information processing device () includes a plurality of CPUs (), a plurality of cache memories () associated with the plurality of CPUs (), and a main memory (), each of the plurality of CPUs () acquires a lock for exclusively accessing data in the main memory (), and then accesses the data, data related to access of a corresponding CPU () and a lock ID for specifying the lock related to the access are associated and written in a cache line of each of the plurality of cache memories (), and a cache line of each of the plurality of cache memories () is flushed when a CPU () other than the corresponding CPU () acquires the lock specified based on the lock ID written in the cache line.