发明名称 |
Method and apparatus for controlling objective lens to prevent disc from being scratched by the objective lens |
摘要 |
A method and apparatus preventing a disc (100) from being scratched by an objective lens (11). A focus pull-in operation is performed. If a level of a pull-in signal remains lower than a predetermined critical level for a predetermined critical period of time or more, the objective lens (11) is controlled so as to move away from the disc (100). <IMAGE> |
申请公布号 |
EP1387353(A3) |
申请公布日期 |
2005.12.14 |
申请号 |
EP20030254750 |
申请日期 |
2003.07.29 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
CHOI, BYOUNG-HO;JUNG, SOO-YUL;MA, BYUNG-IN;PARK, IN-SIK |
分类号 |
G11B19/04;G11B7/085;G11B7/09;G11B7/12 |
主分类号 |
G11B19/04 |
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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