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. 16, 2025
Filed:
Oct. 10, 2024
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Yusuke Tomoda, Yokohama Kanagawa, JP;
Takayuki Kawabe, Sagamihara Kanagawa, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Toshiba Electronic Devices & Storage Corporation, Kawasaki, JP;
Abstract
According to an embodiment, a controller executes a determination operation when a magnetic head passes over a servo sector during a write operation. In the determination operation, a first cumulative amount is calculated by accumulating, for a first section, evaluation amounts each corresponding to an amount by which the width of an adjacent track is narrowed due to the write operation, and determination is made as to whether the first cumulative amount is smaller or larger than a threshold value corresponding to a limit of error correction. When the first cumulative amount is determined to be larger than the threshold value, the controller interrupts the write operation and re-executes the determination operation after executing a rotational delay. The controller resumes the write operation when the first cumulative amount is determined to be smaller than the threshold value as a result of the re-executed determination operation.