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. 30, 2024
Filed:
Sep. 06, 2023
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Naoki Tagami, Yokohama Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Abstract
According to an embodiment, a magnetic disk is provided with a servo sector in which a preamble and a burst pattern are recorded. A recording frequency of the preamble is different from an even multiple of a recording frequency of the burst pattern. A controller determines a demodulation period of the burst pattern while a magnetic head passes through the servo sector. The controller acquires a first phase of a demodulation signal of the burst pattern and acquires first position information of the magnetic head, by demodulating the burst pattern in the demodulation period. The controller corrects the first position information on the basis of the first phase. The controller executes positioning control of the magnetic head on the basis of second position information that is post-correction first position information.