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.

Date of Patent:
Nov. 26, 2013

Filed:

Feb. 26, 2010
Applicants:

Shinsuke Hamada, Yokohama, JP;

Norihiro Hara, Kawasaki, JP;

Yasuhiro Tahara, Hiratsuka, JP;

Inventors:

Shinsuke Hamada, Yokohama, JP;

Norihiro Hara, Kawasaki, JP;

Yasuhiro Tahara, Hiratsuka, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 9/46 (2006.01); G06F 17/30 (2006.01);
U.S. Cl.
CPC ...
Abstract

An execution system executes an update batch according to an update batch execution request from a terminal device and gives a batch execution command to each standby system. Each system stores the content of updated data in its update buffer; and subject to termination of the update batch by each system, the post-update data content is reflected in a database. While the above processing is performed, the execution system and the standby systems accept a reference request from the terminal device; and in a case of 'batch not executed' or 'batch in execution', each system searches the database and then returns the pre-update data content to the terminal device; and in a case of “update content being reflected”, each system searches the database or the update buffer and then returns the post-update data content to the terminal device.


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