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:
Dec. 15, 2020
Filed:
Sep. 12, 2019
Applicants:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Inventors:
Yu Yamamoto, Tokyo, JP;
Makoto Asakura, Tokyo, JP;
Assignees:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 20/10 (2006.01); G11B 5/012 (2006.01); G11B 5/596 (2006.01); G11B 20/18 (2006.01); G11B 19/04 (2006.01); G11B 5/54 (2006.01);
U.S. Cl.
CPC ...
G11B 20/10388 (2013.01); G11B 5/012 (2013.01); G11B 5/54 (2013.01); G11B 5/596 (2013.01); G11B 5/59627 (2013.01); G11B 5/59638 (2013.01); G11B 5/59688 (2013.01); G11B 19/044 (2013.01); G11B 19/045 (2013.01); G11B 20/18 (2013.01);
Abstract
According to one embodiment, a magnetic disk device includes a disk, a head that writes data to the disk and reads data from the disk, and a controller that overwrites a second track on a first track in a first track group, and records a maximum first positioning error in a first direction from the first track to the second track in the first track in a nonvolatile first recording area.