发明名称 |
Magnetic disk apparatus, method for determining data track pitch, and self-servo write method |
摘要 |
<p>A self-servo reference signal including a timing pattern and an oblique phase pattern is transferred in advance on a magnetic disk 1 by magnetic printing. A phase difference detection section 13 detects a phase difference between the two patterns to detect the position of a magnetic head 2. A burst signal generated by a record signal generation section 14 is recorded in a region of the magnetic disk 1 where no self-servo reference signal is recorded. A track pitch calculation section 11 determines a relationship between the reproduction output of the burst signal detected by a reproduction signal processing section 12 and the phase difference detected by the phase difference detection section 13, thus calculating an optimum data track pitch.
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申请公布号 |
EP1513138(A3) |
申请公布日期 |
2007.12.05 |
申请号 |
EP20040021056 |
申请日期 |
2004.09.03 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD |
发明人 |
MIYATA, KEIZO;KOHSO, HIROSHI;KIMURA, MAKOTO;ISHIDA, TATSUAKI |
分类号 |
G11B5/596 |
主分类号 |
G11B5/596 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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