发明名称 |
Servo controller and servo control method |
摘要 |
A servo controller for correcting a read position of a head when reading data recorded on a recording medium. In accordance with the amplitude ratio of data signals read from each segment of a servo section defined on a recording medium, the servo controller generates an AGC signal corresponding to the next segment before reading the next segment. The data signal read from a phase detection segment of the servo section is amplified to an amplitude greater than the predetermined determination range. The amplified data signal is converted to a two-value digital signal in accordance with the determination range. The phase used during servo control is calculated in accordance with the digital signal.
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申请公布号 |
US2002180628(A1) |
申请公布日期 |
2002.12.05 |
申请号 |
US20020187944 |
申请日期 |
2002.07.03 |
申请人 |
FUJITSU LIMITED |
发明人 |
ASANO SHIGETAKA;NAKATA YOSHITAKA |
分类号 |
G11B20/10;H03M1/18;(IPC1-7):H03M1/18 |
主分类号 |
G11B20/10 |
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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