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公开(公告)号:US4190899A
公开(公告)日:1980-02-26
申请号:US894764
申请日:1978-04-10
申请人: Dwight H. Smith , David L. Smith
发明人: Dwight H. Smith , David L. Smith
CPC分类号: G06K17/0016 , H04N1/0057 , H04N1/047 , H04N1/1004 , H04N1/3875 , H04N1/40056 , H04N7/18 , H04N2201/0404 , H04N2201/041 , H04N2201/0432 , H04N2201/04703 , H04N2201/04758
摘要: A film card retrieval device for use in an automatic microfilm display apparatus is provided with a switch for sensing that a film card has been retrieved. In the event the device fails to retrieve a film card, the absence of a switch output signal causes the control apparatus to repeat the card retrieval routine.
摘要翻译: 在自动微缩胶片显示装置中使用的胶片卡检索装置设置有用于感测已经取回胶片卡的开关。 在设备无法取回电影卡的情况下,没有开关输出信号导致控制装置重复卡片检索程序。