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:
Oct. 01, 2013
Filed:
Feb. 25, 2011
Kazuhiro Fukutomi, Kanagawa, JP;
Hiroshi Yao, Kanagawa, JP;
Shinichi Kanno, Tokyo, JP;
Shigehiro Asano, Kanagawa, JP;
Toshikatsu Hida, Kanagawa, JP;
Yasuhiro Kimura, Kanagawa, JP;
Kazuhiro Fukutomi, Kanagawa, JP;
Hiroshi Yao, Kanagawa, JP;
Shinichi Kanno, Tokyo, JP;
Shigehiro Asano, Kanagawa, JP;
Toshikatsu Hida, Kanagawa, JP;
Yasuhiro Kimura, Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a controller controls writing into and reading from a storage apparatus that includes a first data-storage unit and a second data-storage unit. The second data-storage unit stores user data and parity data of the user data. The first data-storage unit stores the parity data. The controller includes a parity updating unit and a parity writing unit. When parity data is updated, the parity updating unit writes the updated parity data into the first data-storage unit. When a certain requirement is satisfied, the parity writing unit reads the parity data written in the first data-storage unit, and writes the parity data thus read into the second data-storage unit.