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    • 9. 发明授权
    • Apparatus for recording and/or reproducing information using a card-like
recording medium
    • 用于使用卡状记录介质记录和/或再现信息的装置
    • US4751394A
    • 1988-06-14
    • US903374
    • 1986-09-03
    • Kazuhiko MatsuokaKenichi SuzukiAkio AokiKazuo Minoura
    • Kazuhiko MatsuokaKenichi SuzukiAkio AokiKazuo Minoura
    • G06K13/06G06K13/067G11B7/0033G11B19/00H04N1/00G01N21/86
    • G06K13/067G11B7/0033H04N1/00002
    • An information recording/reproducing apparatus uses a card-like recording medium having an area for information recording and a blank area, the area for information recording having a reflectivity different from that of the blank area. The apparatus includes a head unit for performing at least one of recording and reproduction, an autotracking servo, a stepping motor and the like cooperating to cause the card to reciprocate relative to the head unit, and an abnormal state detect circuit for detecting whether the card is inserted in the apparatus in a normal state. The abnormal state detect circuit includes a photosensing unit consisting of a light-emitting element for emitting light rays onto the card and a light-receiving element for receiving the light rays from the card. The photosensing unit is deviated with respect to a central portion of the card along a direction perpendicular to a reciprocal movement of the card so that the area for information recording is irradiated with the light rays from the light-emitting element upon insertion of the card in the normal state.
    • 信息记录/再现装置使用具有用于信息记录的区域和空白区域的卡状记录介质,用于信息记录的区域具有与空白区域不同的反射率。 该装置包括用于执行记录和再现中的至少一个的头单元,协调使卡相对于头单元往复运动的自动跟踪伺服,步进电机等,以及异常状态检测电路,用于检测卡 以正常状态插入设备中。 异常状态检测电路包括由用于将光线发射到卡上的发光元件和用于接收来自卡的光线的光接收元件组成的感光单元。 光敏单元相对于卡的中心部分沿着垂直于卡的往复运动的方向偏离,使得当卡插入时,用于信息记录的区域被来自发光元件的光线照射 正常状态。