| 摘要 |
Aimed at is to match a timing of a clock signal with a magnetic dot of a patterned medium. A magnetic part arraying magnetic dots for recording a magnetic signal at certain intervals and a nonmagnetic part not recording a magnetic signal are featured in the patterned medium. A position of the nonmagnetic part not recording a magnetic signal is detected by a magnetic head and a clock signal is synchronized with a detection signal of the nonmagnetic part.
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