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:
Aug. 11, 2026
Filed:
Sep. 09, 2025
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Toshiba Electronic Devices & Storage Corporation, Kawasaki, JP;
Takahiro Kawai, Yokohama Kanagawa, JP;
Tetsuo Kuribayashi, Yokohama Kanagawa, JP;
Takuya Mori, Yokohama Kanagawa, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Toshiba Electronic Devices & Storage Corporation, Kawasaki, JP;
Abstract
According to one embodiment, a controller is configured to: set an increment amount for each of counters respectively corresponding to storage areas arranged in a radial direction of a magnetic disk; increment a value of a counter by the set increment amount for a storage area in the vicinity according to a write operation of writing data to the magnetic disk; execute, for each storage area, an operation of calculating a remaining number of write times, which is a number of write operations for a vicinity of one storage area that are executable until a value of a counter corresponding to the one storage area reaches a first threshold value, based on an increment amount for the one storage area; and execute a rewrite operation on each storage area in an order according to the remaining number of write times in an idle state.