发明名称 |
Disk recording and/or reproducing apparatus that compensates for bit nonlinearity and a phase shift introduced by separate read and write heads |
摘要 |
There is disclosed a magnetic disk device of the external synchronization system using a head assembly of the recording/reproducing heads separation type. This magnetic device comprises: a reproducing head for reproducing data from a magnetic disk; a clock signal generator for generating a clock signal on the basis of a reproduced signal corresponding to a clock pattern from the reproducing head; a delay circuit for delaying recording data relative to the clock signal generated at the clock signal generator; a recording head for recording the recording data delayed by the delay circuit onto the magnetic disk; a position detecting circuit for detecting head position information (e.g., track number) in a disk radial direction of the recording head on the basis of the reproduced signal from the reproducing head; and a control circuit for controlling a quantity of delay of the delay circuit on the basis of head position information from the position detecting circuit and a predetermined magnetization reversal pattern.
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申请公布号 |
US5600501(A) |
申请公布日期 |
1997.02.04 |
申请号 |
US19950531014 |
申请日期 |
1995.09.20 |
申请人 |
SONY CORPORATION |
发明人 |
YAMAKOSHI, TAKAMICHI;HAYASHI, NOBUHIRO;YADA, HIROAKI |
分类号 |
G11B20/10;G11B5/09;G11B20/14;(IPC1-7):G11B5/09 |
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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