发明名称 |
Tight beam position controlling apparatus |
摘要 |
A light beam position controlling apparatus includes a linear motor for driving an optical head in the radial direction of an optical disk, a radial actuator built-in within said optical head and adapted to drive an objective lens for causing the light beam to be accurately positioned in the radial direction of the optical disk and to rotate a mirror for causing the light beam to be deflected in the radial direction of the optical disk, which can be improved in the compression factor of the servo performance, by providing a phase lag compensation circuit and a damping correction circuit for increasing the gain of the transfer function at the resonance frequency of both the linear motor and radial actuator.
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申请公布号 |
US4667315(A) |
申请公布日期 |
1987.05.19 |
申请号 |
US19840652604 |
申请日期 |
1984.09.20 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
FUJII, YOSHIKAZU;INUI, TETSUYA;DEGUCHI, TOSHIHISA;OKUDA, TOHRU |
分类号 |
G11B7/085;G11B7/09;G11B7/095;G11B11/105;(IPC1-7):G11B7/095 |
主分类号 |
G11B7/085 |
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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