发明名称 |
An optical card and a recording/reproduction apparatus for the same. |
摘要 |
<p>An optical card (c) comprising a memory region (2) in which one pit train (5) for supplying a track servo signal and a synchronizing signal is formed at a edge portion (3) of the memory region. The optical card has an increased storing capacity because it requires only one pit train. A recording/reproduction apparatus for the card comprises first (12) and second (13) optical heads. The first optical head scans the pit train to obtain the track servo signal and a synchronizing signal. The second optical head is used for recording and reproducing information from the optical card.</p> |
申请公布号 |
EP0341965(A2) |
申请公布日期 |
1989.11.15 |
申请号 |
EP19890304649 |
申请日期 |
1989.05.08 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
TERASHIMA, SHIGEO;MATOBA, HIROTSUBU |
分类号 |
G11B7/00;G11B7/0033;G11B7/09;G11B7/24 |
主分类号 |
G11B7/00 |
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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