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:
Jul. 21, 2015
Filed:
Aug. 30, 2012
Applicant:
Shuichi Kojima, Kodaira, JP;
Inventor:
Shuichi Kojima, Kodaira, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 27/11 (2006.01); G06F 12/00 (2006.01); G11B 20/10 (2006.01);
U.S. Cl.
CPC ...
G11B 20/10009 (2013.01);
Abstract
According to one embodiment, a disk storage apparatus includes a write controller and a refresh controller. The write controller is configured to perform shingled write, writing data on a disk, using, as write units, data areas including groups of tracks. The refresh controller is configured to count the number of times the shingled write has been performed in a data area adjacent to the inner or outer circumference of a data area, in accordance with a weighting value set on the basis of a shingled write direction, and to instructs that a refresh process be performed, when the number of times counted exceeds a threshold value.