| 摘要 |
A disk storage device has a plurality of disk faces and a plurality of heads, in which a different S/N is improved for each head. The disk face is formatted in a sector format with which the read/write characteristics become the optimum using the fact that the read/write characteristics differ depending on the sector length, so an improvement of the S/N ratio can be expected compared with a conventional recording/reproducing device using a single format, and the device yield rate and the device performance can be improved, and high recording density can be implemented.
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