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1.发明授权Detection system and detection method of document size for use in a document reader 失效文档读取器中使用的文档大小的检测系统和检测方法
公开(公告)号：US5519483A
公开(公告)日：1996-05-21
申请号：US88682
申请日：1993-07-09
申请人： Shinya Kawanishi , Kouichi Furuta , Keiichi Okada
发明人： Shinya Kawanishi , Kouichi Furuta , Keiichi Okada
CPC分类号： G03G15/607
摘要： A light-emitting elements emits a light beam onto a predetermined sensing position, and a reflected beam from an original is received by a light-receiving element. The light-receiving element, which is a position sensitive detector for detecting a spot position of the reflected beam, releases a pair of currents that vary according to the spot position. A signal processing circuit detects the presence or absence of the original based on the ratio of the currents. The pair of currents released by the light-receiving element fluctuate in response to changes in reflection factor due to the individual color of the original, while the ratio of the pair of currents does not fluctuate even if the reflection factor changes. Thus, detection accuracy is improved, and erroneous detection can be prevented in comparison with an arrangement wherein the presence or absence of the original is detected by detecting and comparing the amount of light.
摘要翻译： 发光元件将光束发射到预定感测位置，并且来自原稿的反射光束被光接收元件接收。 作为用于检测反射光束的光点位置的位置敏感检测器的光接收元件释放根据光点位置而变化的一对电流。 信号处理电路基于电流的比例检测原稿的存在或不存在。 受光元件释放的一对电流由于原稿的单独颜色而响应于反射因数的变化而波动，而即使反射因子改变，一对电流的比率也不会波动。 因此，与通过检测和比较光量来检测原稿的存在或不存在的布置相比，提高了检测精度，并且可以防止错误检测。
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2.发明授权
公开(公告)号：US5693933A
公开(公告)日：1997-12-02
申请号：US712153
申请日：1996-09-12
CPC分类号： H04N1/00687 , H04N1/00681 , H04N1/00705 , H04N1/00708 , H04N1/00734 , H04N1/00769 , H04N1/00771 , H04N1/10
摘要： A document reading device comprises a plurality of distance sensors, an original document size detection board, and a main unit control board. The plurality of distance sensors measure distance as for each certain position of an original document table. The original document size detection board comprises an EEPROM for storing a threshold value and an original document size detection CPU 1 for implementing a program for original document size detection. The original document size detection board judges the presence or the absence of an original document at each preset position of an original document table by comparing each threshold value from the plurality of distance sensors with the threshold value, detects the size of an original document according to the judging result from the original document size detection board, and outputs data indicative of the detected original document size. The main unit control CPU 2 implements a program for original document reading control.
摘要翻译： 文件读取装置包括多个距离传感器，原稿尺寸检测板和主单元控制板。 多个距离传感器测量原始文件表的每个特定位置的距离。 原稿尺寸检测板包括用于存储阈值的EEPROM和用于实现用于原稿尺寸检测的程序的原稿尺寸检测CPU 1。 原稿尺寸检测板通过将来自多个距离传感器的每个阈值与阈值相比较来判断原始文档表的每个预设位置处的原稿的存在或不存在，根据 来自原稿尺寸检测板的判断结果，并且输出表示检测到的原稿尺寸的数据。 主单元控制CPU 2实现用于原始文档读取控制的程序。
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3.发明授权Optical distance measuring apparatus having semiconductor position sensitive photodetector 失效具有半导体位置敏感光电检测器的光学测距装置
公开(公告)号：US5488468A
公开(公告)日：1996-01-30
申请号：US994970
申请日：1992-12-22
申请人： Shinya Kawanishi , Kouichi Furuta , Keiichi Okada
发明人： Shinya Kawanishi , Kouichi Furuta , Keiichi Okada
CPC分类号： G01B11/026 , G01C3/085 , G01S17/46 , G01S7/497
摘要： A light emitting element and a light receiving element are installed on a wiring board mounted in a housing case. Light emitted from the light emitting element is irradiated on an object to be detected through a first lens installed in the housing case. Light reflected by the object to be detected is received by the light receiving element through a second lens installed in the housing case. The housing case is formed of a grounded conductive material, and the wiring board is formed of a material having a coefficient of linear expansion equivalent to that of the housing case.
摘要翻译： 发光元件和光接收元件安装在安装在外壳中的布线板上。 从发光元件发射的光通过安装在外壳中的第一透镜照射在待检测物体上。 由待检测物体反射的光由光接收元件通过安装在外壳中的第二透镜接收。 外壳由接地的导电材料形成，并且布线板由具有与壳体的线膨胀系数相等的线性膨胀系数的材料形成。
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公开(公告)号：US5004934A
公开(公告)日：1991-04-02
申请号：US302469
申请日：1989-01-27
申请人： Kouichi Furuta
发明人： Kouichi Furuta
IPC分类号： G01R31/316 , G01R31/28 , H01L21/66 , H01L21/822 , H01L27/04 , H04N5/60
CPC分类号： G01R31/2884
摘要： A semiconductor integrated circuit includes a circuit that has characteristics that can be changed by an electrical signal supplied from the outside of the integrated circuit. An output terminal that is used during the normal action of the semiconductor circuit is used as the output of the filter when testing the characteristics of the filter. A switching from the output terminal during normal action and during testing of the filter is performed by a plural mode switch.
摘要翻译： 半导体集成电路包括具有可以通过从集成电路的外部提供的电信号改变的特性的电路。 在测试滤波器的特性时，使用在半导体电路的正常动作期间使用的输出端子作为滤波器的输出。 在正常操作期间和在滤波器测试期间从输出端子切换由多模式开关执行。
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公开(公告)号：US4791905A
公开(公告)日：1988-12-20
申请号：US846076
申请日：1986-03-31
申请人： Kouichi Furuta , Naofumi Fukue , Taku Muguruma , Masato Iwaki
发明人： Kouichi Furuta , Naofumi Fukue , Taku Muguruma , Masato Iwaki
CPC分类号： F02D41/3082 , F02M37/08 , F02M2037/085
摘要： In a dc electric fuel pump control apparatus for controlling the quantity of fuel supplied to a vehicle engine in accordance with an engine operating parameter condition such as an intake air flow condition or engine speed condition, when controlling a voltage applied to a fuel pump operating motor by closing or opening a fixed-resistor short-circuiting switch circuit in accordance with the magnitude of the operating parameter relative to a predetermined value, an increase or decrease of a battery power source voltage from a predetermined value is detected to increase or decrease the predetermined value of the engine operating parameter. Where a variable resistor is used in place of the fixed resistor, its resistance value in a low battery power source voltage condition is controlled lower than that in a high battery power source voltage condition.
摘要翻译： 在直流电动燃料泵控制装置中，根据诸如进气流条件或发动机转速条件的发动机操作参数条件来控制供应给车辆发动机的燃料量，当控制施加到燃料泵操作电动机 通过根据相对于预定值的操作参数的大小关闭或打开固定电阻器短路开关电路，检测电池电源电压从预定值的增加或减小以增加或减少预定的 发动机工作参数值。 在使用可变电阻器代替固定电阻器的情况下，其在低电池电源电压条件下的电阻值被控制为低于高电池电源电压条件下的电阻值。
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