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
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