发明名称 |
Tilt servo controlling apparatus |
摘要 |
A tilt servo controlling apparatus is provided with: an optical pickup for emitting a light beam onto an optical record medium and detecting a reflection light from the optical record medium to thereby output a detection signal; a level detecting device for detecting a level of the detection signal outputted by the optical pickup; a tilt error correcting device for correcting a tilt error due to an aberration, which is generated by a tilt angle between (i) a normal line of a surface of the optical record medium at a position irradiated with the light beam and (ii) an optical axis of the light beam; and a tilt error correction controlling device for outputting a control signal to control a correction amount of the tilt error correcting device, by giving a variation to the control signal on a time base and adjusting the control signal so that the level detected by the level detecting device be optimized with respect to the variation of the control signal.
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申请公布号 |
US5886496(A) |
申请公布日期 |
1999.03.23 |
申请号 |
US19980061865 |
申请日期 |
1998.04.17 |
申请人 |
PIONEER ELECTRONIC CORPORATION |
发明人 |
FURUKAWA, JUNICHI;TATEISHI, KIYOSHI;MURAO, NORIAKI |
分类号 |
G11B7/095;G11B7/135;(IPC1-7):B64C17/02 |
主分类号 |
G11B7/095 |
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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