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:
Mar. 10, 2026
Filed:
Feb. 25, 2025
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Takahiro Aoki, Kawasaki Kanagawa, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Toshiba Electronic Devices & Storage Corporation, Kawasaki, JP;
Abstract
According to one embodiment, a magnetic disk device including a controller. The controller writes adjustment patterns, reads the written adjustment patterns, and detects the number of signal components of the sync mark included in the read signal, selects a frequency of an adjustment pattern from which the detected number larger than or equal to a threshold value is obtained, among the read adjustment patterns, as a write frequency of each of magnetic heads, writes spiral patterns including the sync mark in each predetermined cycle with the same frequency as each of the selected write frequencies, and writes a servo pattern, while tracking each of the written spiral patterns.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile