发明名称 |
Tracking control apparatus. |
摘要 |
<p>A tracking control apparatus is disclosed, in which a light beam is focused on an optical recording medium to form a light spot thereon, and a tracking error signal corresponding to a maximum or minimum point of total reflected light from a portion of the optical recording medium, which is irradiated by the light spot, is detected and used as a desired value for tracking servo control, whereby accurate tracking servo control can be made without producing any offset even when the surface of the optical recoding medium is inclined or the optical axis of the light reflected from the optical recording medium deviates from a proper direction.</p> |
申请公布号 |
EP0430541(A2) |
申请公布日期 |
1991.06.05 |
申请号 |
EP19900312621 |
申请日期 |
1990.11.20 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD |
发明人 |
EDAHIRO, YASUAKI;WATANABE, KATSUYA;MORIYA, MITSURO |
分类号 |
G11B7/09;G11B7/095 |
主分类号 |
G11B7/09 |
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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