发明名称 |
Looking slide drive for a disc scanner |
摘要 |
An apparatus having a frame (1) carrying a turntable (3) for supporting the information carrier, which turntable is rotatable about an axis of rotation (3A), a slide (9), which is movable between two end positions, with a scanning unit, guide spindles (5, 7) and a linear motor unit (17, 19) for the slide, and an electrically energizable clamping unit (21). In the non-energized condition the clamping unit clamps the slide in any arbitrary stationary position of the slide along its path and in the energized condition it does not clamp the slide. During operation of the device a control unit at least substantially simultaneously turns on a first energizing current to the motor drive unit and a second energizing current to the clamping unit at the beginning of a displacement of the slide and at least substantially simultaneously turns off the first energizing current and the second energizing current at the end of the displacement.
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申请公布号 |
US5511062(A) |
申请公布日期 |
1996.04.23 |
申请号 |
US19930132437 |
申请日期 |
1993.10.06 |
申请人 |
U.S. PHILIPS CORPORATION |
发明人 |
SCHONEVELD, PIETER A.;METZEMAEKERS, LEO G. M.;VAN DE VEERDONK, JOHANNES T. A.;VERHOEVEN, ROBERTUS J. M.;HEZEMANS, CORNELIUS A.;BLANKERS, PETRUS J.;HENSING, JOHANNES M. M.;BEIJERSBERGEN VAN HENEGOUWEN, CORNELIS M. |
分类号 |
G11B7/085;G11B19/20;G11B21/22;G11B25/04;G11B33/08;(IPC1-7):G11B7/085 |
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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