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1. 发明授权

US4216506A Card transport mechansim 失效
标题翻译：卡运输mechansim
公开(公告)号：US4216506A
公开(公告)日：1980-08-05
申请号：US868775
申请日：1978-01-12
申请人： Gerald W. Ludtke , Glenn A. Butler , George F. Krtous
发明人： Gerald W. Ludtke , Glenn A. Butler , George F. Krtous
IPC分类号： G06K13/07 , G09B5/06 , G11B15/48 , G11B5/54
CPC分类号： G06K13/07 , G09B5/062
摘要： The present invention provides an improvement in a card reader type audio visual teaching device. The device employs a card handling mechanism for moving an information card which may contain both audio and visual information, across a record/playback transducing head. A dual track magnetic stripe on the information card carries instructor information or a question on one track to be audibly reproduced by the device which a student can hear through a speaker or preferably a set of headphones. A microphone permits a student to record an attempted repetition or response on the second track. The improvement comprises a multispeed card transport drive mechanism which permits either the student track or both the instructor track and the student track to be driven past the record/playback head at a substantially reduced rate. Additionally, the transport drive mechanism includes a repeat mechanism for returning the card to an initial position. A drive capstan is canted in one direction for forward movement of the card and in an opposite direction for reverse movement of the card while a pair of limit switches serve to limit the travel of the card in the respective directions. A pair of hardened and polished pins are mounted within the card guide track to substantially reduce wear and friction caused by the moving cards.
摘要翻译：本发明提供一种读卡器型视听教学装置的改进。该设备采用卡处理机构，用于在记录/回放传感头上移动可能包含音频和视觉信息的信息卡。信息卡上的双轨磁条携带指导者信息或一个轨道上的问题，以便学生可以通过扬声器或优选地一组耳机听到的设备可听地再现。麦克风允许学生在第二轨道上记录尝试的重复或响应。该改进包括多速卡传送驱动机构，其允许学生轨道或教练轨道和学生轨道两者以显着降低的速率被驱动经过记录/重放头。此外，传送驱动机构包括用于将卡返回到初始位置的重复机构。驱动绞盘在一个方向上倾斜，用于卡的向前移动并且在相反方向上用于卡的反向移动，而一对限位开关用于限制卡在各个方向上的行进。一对硬化和抛光的销钉安装在卡导轨内，以大大减少由移动卡造成的磨损和摩擦。

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