发明名称 |
Magnetic head positioning device and method |
摘要 |
A servo track recorded on a magnetic tape is traced by a pair of servo track reproduce heads. The output of the pair of servo track reproduce heads are subjected to a subtracting process by a subtractor. A pulse signal is provided to a stepping motor according to the output of the subtractor. The stepping motor provides a rotation in a positive direction or a negative direction according to the applied pulse. The rotation of the stepping motor is translated to a magnetic head via a moving mechanism whereby the position of the magnetic head is adjusted along the width direction of the magnetic tape to trace properly the data track on the magnetic tape. A closed-loop control system is implemented for the magnetic head to realize tracking control of high precision.
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申请公布号 |
US5311380(A) |
申请公布日期 |
1994.05.10 |
申请号 |
US19920866369 |
申请日期 |
1992.04.10 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
MURATA, KAZUKI;KAKIWAKI, SHIGEAKI;OKUDA, TOHRU |
分类号 |
G11B5/584;(IPC1-7):G11B5/584 |
主分类号 |
G11B5/584 |
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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