发明名称 |
Apparatus for positioning magnetic head and method of the same |
摘要 |
An apparatus for positioning a magnetic head includes a servo signal detection circuit for detecting a servo signal recorded on a magnetic disk in a predetermined first period, an acceleration measuring portion which is fitted to a part of a mechanism for mounting a magnetic head, outputs an acceleration signal in a direction of positioning the magnetic head, and samples the acceleration signal in a second period shorter than the first period, a comparison processing portion for comparing a deviation value computed from at least either one of the acceleration signal and the servo signal with a predetermined value, a write inhibit signal generating portion for generating a signal inhibiting write of data on a magnetic disk in accordance with the result of comparison in the comparison processing portion, and a manipulated variable compensation portion for generating manipulated variable for adjusting the position of the magnetic head from at least either one of the servo signal and the acceleration signal and a target value of the position of the magnetic head, whereby to prevent erroneous write operation of data onto a magnetic disk due to unsteady positioning error of the magnetic head.
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申请公布号 |
US5986845(A) |
申请公布日期 |
1999.11.16 |
申请号 |
US19970823837 |
申请日期 |
1997.03.25 |
申请人 |
HITACHI, LTD. |
发明人 |
YAMAGUCHI, TAKASHI;TSUNETA, KATSUHIRO;ONOYAMA, KATSUMOTO;ARAI, TSUYOSHI;FUJII, YOSHIKATSU;NUMASATO, HIDEHIKO;HAMADA, YOSUKE;KOBAYASHI, MASAHITO |
分类号 |
G11B21/10;G11B5/596;G11B19/04;(IPC1-7):G11B21/02 |
主分类号 |
G11B21/10 |
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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