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    • 6. 发明授权
    • 지문 대조 장치
    • 지문대조장치
    • KR100467921B1
    • 2005-01-24
    • KR1019990053117
    • 1999-11-26
    • 오므론 가부시키가이샤
    • 모리타다케오나가야마게이이치이시이히로타카요모야스히데가사이에이지
    • G06K9/00
    • G06K9/0012A61B5/1172G06K9/00013G06K9/00899G07C9/00158H03K17/962
    • A fingerprint identification device judges that the input fingerprint is identical to the fingerprint in the database only when a the touch sensor detects the human finger and a the fingerprint processing unit detects that the input fingerprint is identical to a fingerprint in the database. The touch sensor includes an oscillator that outputs a high frequency signal. An electrode unit applies the high frequency signal to the human finger. A detector unit detects a variation of impedance values varied by the human finger contracting the electrode unit and outputs an output signal based on the variation of impedance values. A discriminator unit determines whether the human finger is in contact with the electrode unit by comparing the output signal from the detector unit with a predetermined reference value.
    • 只有当触摸传感器检测到人的手指并且指纹处理单元检测到输入指纹与数据库中的指纹相同时,指纹识别设备才判断输入指纹与数据库中的指纹相同。 触摸传感器包括输出高频信号的振荡器。 电极单元将高频信号施加到人的手指。 检测器单元检测由收缩电极单元的人手指改变的阻抗值的变化,并基于阻抗值的变化输出输出信号。 鉴别器单元通过将来自检测器单元的输出信号与预定参考值进行比较来确定人手指是否与电极单元接触。