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    • 1. 发明授权
    • Method and apparatus for reading invisible symbol
    • 读取隐形符号的方法和装置
    • US06471126B2
    • 2002-10-29
    • US09753763
    • 2001-01-02
    • Taeko I. UranoKenji SanoHideo NagaiTomokazu DomonHironori Fukuda
    • Taeko I. UranoKenji SanoHideo NagaiTomokazu DomonHironori Fukuda
    • G06K710
    • G06K7/14
    • An invisible symbol reading apparatus includes a heating unit for heating an invisible symbol formed on a sample and containing a material which emits infrared light when heated, a detecting unit for detecting infrared light emitted from the invisible symbol, and an arithmetic operation unit for binarizing a detection signal from the detecting unit. The arithmetic operation unit calculates a differential coefficient of the detection signal, that corresponds to a position on the sample. On the basis of upper and lower threshold values set for the differential coefficient, the arithmetic operation unit determines a maximum value of the differential coefficient in a region exceeding the upper threshold value and a minimum value of the differential coefficient in a region smaller than the lower threshold value. The arithmetic operation unit binarizes the detection signal by using the maximum or minimum value as a leading or trailing edge of a binary function.
    • 不可见符号读取装置包括加热单元,用于加热形成在样本上的不可见符号,并且包含加热时发出红外光的材料;检测单元,用于检测从不可见符号发射的红外光;以及算术运算单元, 来自检测单元的检测信号。 算术运算单元计算与样本上的位置对应的检测信号的微分系数。 基于为差分系数设定的上限阈值和下限阈值,算术运算单元确定超过上限阈值的区域中的微分系数的最大值和小于下限值的区域中的微分系数的最小值 阈值。 算术运算单元通过使用最大值或最小值作为二进制函数的前沿或后沿来对检测信号进行二值化。
    • 2. 发明授权
    • Method and apparatus for reading invisible symbol
    • 读取隐形符号的方法和装置
    • US06168081A
    • 2001-01-02
    • US09273276
    • 1999-03-22
    • Taeko I. UranoKenji SanoHideo NagaiTomokazu DomonHironori Fukuda
    • Taeko I. UranoKenji SanoHideo NagaiTomokazu DomonHironori Fukuda
    • G06K710
    • G06K7/14
    • An invisible symbol reading apparatus includes a heating unit for heating an invisible symbol formed on a sample and containing a material which emits infrared light when heated, a detecting unit for detecting infrared light emitted from the invisible symbol, and an arithmetic operation unit for binarizing a detection signal from the detecting unit. The arithmetic operation unit calculates a differential coefficient of the detection signal, that corresponds to a position on the sample. On the basis of upper and lower threshold values set for the differential coefficient, the arithmetic operation unit determines a maximum value of the differential coefficient in a region exceeding the upper threshold value and a minimum value of the differential coefficient in a region smaller than the lower threshold value. The arithmetic operation unit binarizes the detection signal by using the maximum or minimum value as a leading or trailing edge of a binary function.
    • 不可见符号读取装置包括加热单元,用于加热形成在样本上的不可见符号,并且包含加热时发出红外光的材料;检测单元,用于检测从不可见符号发射的红外光;以及算术运算单元, 来自检测单元的检测信号。 算术运算单元计算与样本上的位置对应的检测信号的微分系数。 基于为差分系数设定的上限阈值和下限阈值,算术运算单元确定超过上限阈值的区域中的微分系数的最大值和小于下限值的区域中的微分系数的最小值 阈值。 算术运算单元通过使用最大值或最小值作为二进制函数的前沿或后沿来对检测信号进行二值化。
    • 6. 发明授权
    • Torque sensor for detecting a shaft torque and an electric machine in
which the torque sensor is mounted
    • 用于检测轴扭矩的扭矩传感器和安装扭矩传感器的电机
    • US4750371A
    • 1988-06-14
    • US913317
    • 1986-09-30
    • Tadahiko KobayashiMasashi SahashiKoichiro InomataTomokazu Domon
    • Tadahiko KobayashiMasashi SahashiKoichiro InomataTomokazu Domon
    • G01L3/10
    • G01L3/102G01L3/105
    • A torque sensor of noncontact type, by which can be stably measured the torque of a shaft with a sufficient S/N ratio under the influence of external magnetic noise, such as an induction magnetic flux which is produced in an induction motor, and which can be readily disposed in a comparatively small space. When provided on an induction motor, the torque sensor is mounted on the induction motor in noncontacting relationship. The torque sensor detects the torque of the shaft and includes a pair of magnetic material members provided on respective circumferential portions of the peripheral surface of a shaft. A pair of magnetic detectors are disposed at opposite locations at which external magnetic fields having opposite phase exist. The detectors detect the variation of the magnetic characteristics of the magnetic materials, and a signal processing circuit produces a mean value of output signals obtained from the magnetic detectors.
    • 一种非接触式的转矩传感器,其可以在外部磁噪声(例如感应电动机中产生的感应磁通)的影响下稳定地测量具有足够的S / N比的轴的转矩,并且可以 容易地设置在相对较小的空间中。 当设置在感应电动机上时,转矩传感器以非接触关系安装在感应电动机上。 转矩传感器检测轴的转矩,并且包括设置在轴的周面的相应周向部分上的一对磁性材料构件。 一对磁性检测器设置在具有相反相位的外部磁场的相对位置处。 检测器检测磁性材料的磁特性的变化,并且信号处理电路产生从磁性检测器获得的输出信号的平均值。