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:
Jun. 27, 2006
Filed:
Oct. 14, 2003
Tooru Suzuki, Tokyo, JP;
Katsunori Nakamura, Tokyo, JP;
Teruo Nagasawa, Tokyo, JP;
Takahisa Kimura, Tokyo, JP;
Takeshi Koide, Tokyo, JP;
Tooru Suzuki, Tokyo, JP;
Katsunori Nakamura, Tokyo, JP;
Teruo Nagasawa, Tokyo, JP;
Takahisa Kimura, Tokyo, JP;
Takeshi Koide, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
With the purpose of achieving consistent non-synchronous copying of data from a plurality of primary side control units to a plurality of secondary side control units, all of the secondary side control units are connected via a loop, and each of the secondary side control units determines guarantee time by circulating a time added to the data received from the primary side control units via said loop communication route. A consistent data copying is guaranteed by circulating the determined guarantee time via the loop communication route.