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:
May. 19, 2026
Filed:
Nov. 29, 2024
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Nobuhiro Maeto, Yokohama Kanagawa, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Toshiba Electronic Devices & Storage Corporation, Kawasaki, JP;
Abstract
A controller calculates, based on a positional error signal, an evaluation amount of damage on data of an adjacent track caused by a write operation, and compares a first amount being the evaluation amount with a first threshold value corresponding to a correction limit of an error correction in units of tracks. The controller interrupts the write operation in response to determining that the first amount is greater than the first threshold value. The controller executes a read operation on the adjacent track, acquires a metric representing a signal quality of the data of the adjacent track read by the read operation, calculates the evaluation amount based on the metric, and compares a second amount being the evaluation amount with the first threshold value. The controller continues the write operation in response to determining that the second amount is smaller than a first threshold value.