发明授权
- 专利标题: Record/playback head positioning device for optical disc apparatus
- 专利标题(中): 用于光盘装置的记录/回放头定位装置
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申请号: US522126申请日: 1983-08-11
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公开(公告)号: US4583212A公开(公告)日: 1986-04-15
- 发明人: Hiroshi Koide , Junichi Watanabe
- 申请人: Hiroshi Koide , Junichi Watanabe
- 申请人地址: JPX Tokyo
- 专利权人: Ricoh Company, Ltd.
- 当前专利权人: Ricoh Company, Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX57-140555 19820813; JPX57-218782 19821214
- 主分类号: G11B7/085
- IPC分类号: G11B7/085 ; G11B7/09 ; G11B21/02 ; G11B21/08 ; G11B3/36
摘要:
An optical disc recording and playback apparatus has a record/playback head adapted to write data into and read them out of information tracks formed on a rotatable optical disc. A carriage carrying the head therewith is driven by a linear motor in the radial direction of the disc perpendicular to the tracks, and then stopped and held at a desired track position. Thereafter, a tracking control is performed by allowing the head to move in the radial direction within a predetermined range.
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