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    • 1. 发明授权
    • Motor speed control circuit
    • 电机速度控制电路
    • US4418298A
    • 1983-11-29
    • US243598
    • 1981-03-13
    • Hitoshi SuzukiFusao Makino
    • Hitoshi SuzukiFusao Makino
    • H02P7/288H02P7/29H02P5/16
    • H02P7/2885H02P7/2913
    • A motor speed control system controls the rotation speed of the motor in accordance with the pulse width of a speed control pulse signal applied to the motor speed control system. The speed control pulse signal is not directly applied to the motor, but is converted to a voltage signal having a voltage level which corresponds to the pulse width of the speed control pulse signal. The converting system includes a charge/discharge circuit for varying a charge voltage level of a capacitor in accordance with the differences of the actual rotation speed of the motor and the desired rotation speed of the motor represented by the speed control pulse signal. The charge voltage level stored in the capacitor is applied to the motor to drive it.
    • 电动机速度控制系统根据施加到电动机速度控制系统的速度控制脉冲信号的脉冲宽度来控制电动机的转速。 速度控制脉冲信号不直接施加到电动机,而是转换成具有对应于速度控制脉冲信号的脉冲宽度的电压电平的电压信号。 转换系统包括用于根据电动机的实际转速和由速度控制脉冲信号表示的电动机的期望转速的差异来改变电容器的充电电压电平的充电/放电电路。 将存储在电容器中的充电电压电平施加到电动机以驱动它。
    • 2. 发明授权
    • OCR for reading a constraint free hand-written character or the like
    • OCR用于读取无限制的手写字符等
    • US4193056A
    • 1980-03-11
    • US908657
    • 1978-05-23
    • Toshiaki MoritaHironari TakatoriFusao MakinoSyoichi YasudaYoshiki Nishioka
    • Toshiaki MoritaHironari TakatoriFusao MakinoSyoichi YasudaYoshiki Nishioka
    • G06K9/46G06K9/12
    • G06K9/4638G06K2209/01
    • A character pattern to be recognized is divided into a predetermined number of parallel segments of equal width extending in one direction and character information on respective ones of the segments is read out via a line of photoelectric cells. Two pieces of the character information on two adjacent segments are evaluated together in developing symbolic information indicative of the correlation between two adjacent segment patterns. By the action of simplified feature extraction systems, a plurality of two-dimensional features are established in accordance with all combinations of the symbolic information which have been derived throughout the scanning procedure. The symbolic information is developed particularly with regard to the number of loops within the character pattern, the shape of the left edge portion, the shape of the right edge portion, the shape of the upper edge portion and the shape of the lower edge portion of the character pattern. These combinations of the symbolic information are compared with reference information prestored in a memory of an OCR (optical character reader).
    • 要识别的字符图案被分成预定数量的在一个方向上延伸的相等宽度的平行片段,并且通过光电单元线读出关于相应片段上的字符信息。 在开发表示两个相邻片段图案之间的相关性的符号信息时,两个相邻片段上的两个字符信息被一起评估。 通过简化特征提取系统的动作,根据在整个扫描过程中得出的符号信息的所有组合来建立多个二维特征。 关于字符图案中的环的数量,左边缘部分的形状,右边缘部分的形状,上边缘部分的形状和下边缘部分的形状,特别地开发了符号信息 字符模式。 将符号信息的这些组合与预先存储在OCR(光学字符读取器)的存储器中的参考信息进行比较。