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. 17, 2010
Filed:
Apr. 24, 2007
Takaharu Ishizuka, Kawasaki, JP;
Toshikazu Ueki, Kawasaki, JP;
Makoto Hataida, Kawasaki, JP;
Takashi Yamamoto, Kawasaki, JP;
Yuka Hosokawa, Kawasaki, JP;
Takeshi Owaki, Kawasaki, JP;
Daisuke Itou, Kawasaki, JP;
Takaharu Ishizuka, Kawasaki, JP;
Toshikazu Ueki, Kawasaki, JP;
Makoto Hataida, Kawasaki, JP;
Takashi Yamamoto, Kawasaki, JP;
Yuka Hosokawa, Kawasaki, JP;
Takeshi Owaki, Kawasaki, JP;
Daisuke Itou, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
In a multiprocessor system, a system controller includes snoop tags which are copy information on cache tags retained by respective CPUs. If the same address is registered in S (Shared state) in the cache tag of each of the CPUs connected to the same CPU bus, the address is registered in S (Shared state) in only any one of the snoop tags corresponding to the CPUs in which the same address is registered.