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:
Sep. 08, 2026
Filed:
Apr. 25, 2025
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Takuji Matsuzawa, Kashiwa Chiba, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
TOSHIBA, ELECTRONIC DEVICES & STORAGE CORPORATION, Tokyo, JP;
Abstract
According to one embodiment of a magnetic disk device, a controller determines, by using a determination model, whether or not a distance in a radial direction from a target position related to a first track to a position of a magnetic head exceeds a threshold. The position of the magnetic head fluctuates from the target position toward a second track during execution of writing to the first track. The controller performs writing to the first track when the distance does not exceed the threshold, and performs no writing to the first track when the distance exceeds the threshold. The determination model is a learned model configured to receive pieces of position error information obtained by reading servo information from servo areas and output a value representing whether or not the distance exceeds the threshold while the magnetic head moves above the servo areas.