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1. 发明授权

US5027339A Optical card analyzing apparatus 失效
标题翻译：光卡分析仪
公开(公告)号：US5027339A
公开(公告)日：1991-06-25
申请号：US227336
申请日：1988-08-02
申请人： Shigeru Yoda , Kouji Nitto
发明人： Shigeru Yoda , Kouji Nitto
IPC分类号： G11B7/0033 , G11B19/04 , G11B20/18 , G11B27/36
CPC分类号： G11B27/36 , G11B19/04 , G11B20/1803 , G11B7/0033
摘要： There is provided an optical card information recording/playing back apparatus comprising: an optical system for irradiating a light beam for reproducing recorded information onto information recording tracks of the optical card on which pit trains indicative of recording information are formed; a photo detector for receiving the reflected light from the optical card and outputting a photo sensing signal; a pit correspondence signal producing circuit for detecting a peak of the photo sensing signal and producing a pit correspondence signal which changes in correspondence to a pit position on the basis of the result of the peak detection; a frequency/voltage converter for converting a frequency of the pit correspondence signal to a voltage; and a discrimination signal producing circuit for comparing a voltage output of the frequency/voltage converter with a reference value and producing an information presence/absence discrimination signal.
摘要翻译：提供了一种光卡信息记录/重放装置，包括：光学系统，用于将记录信息再现的光束照射到其上形成指示记录信息的凹坑列的光卡的信息记录轨道上; 光检测器，用于接收来自光卡的反射光并输出感光信号; 凹坑对应信号产生电路，用于检测光感测信号的峰值，并产生与峰值检测结果相对应的凹坑位置改变的凹坑对应信号; 用于将所述凹坑对应信号的频率转换为电压的频率/电压转换器; 以及鉴别信号产生电路，用于将频率/电压转换器的电压输出与参考值进行比较，并产生信息存在/不存在鉴别信号。

2. 发明授权

US5179268A Apparatus for detecting inclination of an optical card 失效
标题翻译：用于检测光卡倾斜的装置
公开(公告)号：US5179268A
公开(公告)日：1993-01-12
申请号：US674308
申请日：1991-03-25
申请人： Kouji Nitto , Yoshihito Koshiba , Kazuo Tsuboi , Keiichi Tsutsui , Koji Sogo
发明人： Kouji Nitto , Yoshihito Koshiba , Kazuo Tsuboi , Keiichi Tsutsui , Koji Sogo
IPC分类号： G06K7/015 , G11B7/0033 , G11B7/09 , G11B17/34 , G11B25/04
CPC分类号： G11B25/04 , G06K7/015 , G11B17/34 , G11B7/0033 , G11B7/0901
摘要： The present invention relates to an optical card reader that detects any relative inclination of the card by measuring the relative motion of the optical tracks themselves. The optical card reader comprises a card holding portion, an optical head having the ability follow data tracks on the optical card, and a detector that measures the angle of inclination of the optical card from a tracking signal generated from a one-dimensional relative movement of the card holder and the optical card.
摘要翻译：光卡阅读器本发明涉及一种通过测量光道本身的相对运动来检测卡的任何相对倾斜度的光卡阅读器。光卡阅读器包括卡片保持部分，具有跟随光卡上的数据轨迹的能力的光学头，以及一个检测器，该检测器测量光卡从与一维相对运动产生的跟踪信号的倾斜角度，卡夹和光卡。

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