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:
Jan. 05, 2021
Filed:
Mar. 03, 2020
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Hiroyuki Chiba, Kanagawa, JP;
KABUSHKI KAISHA TOSHIBA, Tokyo, JP;
TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION, Tokyo, JP;
Abstract
A magnetic disk device includes a magnetic disk, a read head for reading data from sectors and tracks of the magnetic disk, a read channel including a first circuit configured to process an output signal from the read head according to a value of a parameter, and processor. The processor is configured to, upon detection of a read error while the read head is reading data from an error sector of an error track, determine an error amount in each sector in the error track, select from the error track a plurality of sectors having an error amount that is within a predetermined range from an error amount of the error sector, perform a training read on the selected sectors, determine a new value of the parameter based on the training read, and set the new value of the parameter for the read channel.