发明授权
- 专利标题: Optical information reproducing apparatus
- 专利标题(中): 光信息再现设备
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申请号: US273426申请日: 1988-11-18
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公开(公告)号: US5123003A公开(公告)日: 1992-06-16
- 发明人: Kazuo Noda , Koichi Yamazaki
- 申请人: Kazuo Noda , Koichi Yamazaki
- 申请人地址: JPX Tokyo
- 专利权人: Nippon Conlux Co., Ltd.
- 当前专利权人: Nippon Conlux Co., Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX62-293849 19871120
- 主分类号: G11B7/00
- IPC分类号: G11B7/00 ; G11B7/0033 ; G11B7/09 ; G11B7/14
摘要:
The present invention relates to the improvement in an apparatus for reproducing information from a card-like optical information recording medium including tracks for guiding and tracks for information. At least three light spots are formed in said card-like recording medium by light-spot forming means. Signal detection means then detects focusing control signals and tracking control signals by scanning said tracks for guiding with a spot among said light spots. Further, signal reproducing means reproduces information signals of plural tracks by scanning the information tracks with the remaining at least two light spots. The reproduced information signals of the plural tracks are stored in plural memories separately for each track. Subsequently, read-out means sequentially and successively reads the stored information by the time sharing system from each of the plural memories with a speed larger than that when said reproduced information has been input.