Magnetic disk device and head position correction method
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorNaoki Tagami
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Abstract
According to one embodiment, a magnetic disk device includes a disk including a recording region including a servo sector, a head configured to write data to the disk and read data from the disk, and a controller configured to acquire a plurality of correction data for a repeatable runout of the recording region, the correction data respectively corresponding to a plurality of measurement positions set based on a first linearity error acquired by reading the servo sector, and to correct a position of the head based on the correction data.
Claims20
A magnetic disk device comprising:
- a disk including a recording region including a servo sector;
- a head configured to write data to the disk and read data from the disk;
- and
- a controller configured to acquire a plurality of correction data for a repeatable runout of the recording region, the correction data respectively corresponding to a plurality of measurement positions set based on a first linearity error acquired by reading the servo sector, and to correct a position of the head based on the correction data.
A magnetic disk device comprising:
- a disk including a recording region including a servo sector;
- a head configured to write data to the disk and read data from the disk;
- and
- a controller configured to acquire a plurality of correction data for a repeatable runout of the recording region, the correction data respectively corresponding to a plurality of measurement positions set based on a Lissajous waveform acquired by reading the servo sector, and to correct a position of the head based on the correction data.
A head position correction method applied to a magnetic disk device including a disk including a recording region including a servo sector and a head configured to write data to the disk and read data from the disk, the method comprising:
- acquiring a plurality of correction data for a repeatable runout of the recording region, the correction data respectively corresponding to a plurality of measurement positions set based on a first linearity error acquired by reading the servo sector, and;
- correcting a position of the head based on the correction data.
Dependencies are inferred from the claim text.