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.:

US 8788752 B1

PDF
Full Text
Expired
Date of Patent:
Jul. 22, 2014

Filed:

Jan. 26, 2011
Applicant:

Hiroshi Okamoto, Kawasaki, JP;

Inventor:

Hiroshi Okamoto, Kawasaki, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/06 (2006.01);
U.S. Cl.
CPC ...
Abstract

A storage apparatus includes a written state bit map memory that stores a written state bit map that includes bits each allocated to one of partial areas of a storage device for storing write management information indicating whether written data is present in a partial area of the storage device that is allocated to one of the bits, a bit map management section, when data is written into a partial area of the storage device in response to a write request from the host apparatus, that sets a value indicating that the data is written into the partial area to a bit allocated to the partial area in which the data is written, and a patrolling process section for performing a patrolling process on the partial areas of the storage device on the basis of the write management information stored in the written state bit map memory.


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Okamoto, Hiroshi. (2014). Storage apparatus, patrolling method and storage system (U.S. Patent No. 8788752). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8788752

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