Magnetic disk device and error correction method
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorNobuhiro Maeto
Life of this patent
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Abstract
According to one embodiment, a magnetic disk device includes a disk, a head that writes data to the disk and reads data from the disk, and a controller that executes error correction on a first sector which is unreadable in a first track from an initial reading time of initially one-round reading the first track of the disk based on first parity data corresponding to the first track.
Claims20
A magnetic disk device comprising:
- a disk;
- a head that writes data to the disk and reads data from the disk;
- and
- a controller that executes error correction on a first sector which is unreadable in a first track from an initial reading time of initially one-round reading the first track of the disk based on first parity data corresponding to the first track.
A magnetic disk device comprising:
- a disk in which data is written in 4 k sector format or higher;
- a head that writes data to the disk and reads data from the disk;
- and
- a controller that executes error correction on a first sector of 4 k or more which is unreadable in a first track from an initial reading time of initially one-round reading the first track of the disk based on first parity data corresponding to the first track.
An error correction method which is a re-assigning method for a magnetic disk device including a disk and a head that writes data to the disk and reads data from the disk, the method comprising:
- executing error correction on a first sector which is unreadable in a first track from an initial reading time of initially one-round reading the first track of the disk based on first parity data corresponding to the first track.
Dependencies are inferred from the claim text.