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:
Nov. 04, 2025
Filed:
Sep. 10, 2024
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Shoya Yamamoto, Saitama Saitama, JP;
Masafumi Iwashiro, Yokohama Kanagawa, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Toshiba Electronic Devices & Storage Corporation, Kawasaki, JP;
Abstract
According to an embodiment, a controller corrects an instruction value of a VCM current by a first feedforward control based on a first detection value obtained by a first sensor. The controller executes a first operation in accordance with occurrence of a set event. In the first operation, the controller acquires a first waveform that is a waveform of a deviation amount of a detection position from a target position of a magnetic head, and acquires from the first waveform a first frequency band that is a frequency band whose amplitude is greater than a first threshold. The controller adjusts a coefficient of a transfer function of the first feedforward control to suppress the first detection value in a second frequency band different from the first frequency band and output a correction amount for a first instruction value based on the first detection value in the first frequency band.