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    • 9. 发明授权
    • Mobile terminal device
    • 移动终端设备
    • US06798335B2
    • 2004-09-28
    • US10219575
    • 2002-08-15
    • Yukio MiyashitaFukiko MaedaHidetoshi Yazaki
    • Yukio MiyashitaFukiko MaedaHidetoshi Yazaki
    • G05B1900
    • H04W52/0254H04M1/67Y02D70/00
    • Time elapsed from the time when the sensor cover is opened and power supply to the fingerprint sensor is turned from off to on is counted and when there is no fingerprint image read-in command within a specified period of time power supply to the fingerprint sensor is turned off. Even if power supply to the fingerprint sensor is turned off, when a fingerprint image read-in command executes power supply to the fingerprint sensor is turned on and read-in of a fingerprint image commences. If a fingerprint image read-in command executes when the sensor cover is closed, that command is invalidated. In such a configuration, the opening and closing of a sensor cover works in synchronicity with on/off control of power supply for a fingerprint sensor and even when the sensor cover is open, wasteful electricity consumption through power supply continuing if the fingerprint sensor is not used within a specified period of time is prevented.
    • 对传感器盖打开时间和指纹传感器电源从关闭到开启的时间进行计数,当在指定的时间内没有指纹图像读入命令时,指纹传感器的电源为 关掉。 即使关闭指纹传感器的电源,当指纹图像读入命令执行对指纹传感器的供电被打开并且指纹图像的读入开始时。 如果在传感器盖关闭时执行指纹图像读入命令,则该命令无效。 在这样的结构中,传感器盖的打开和关闭与指纹传感器的电源的开/关控制同步工作,甚至当传感器盖打开时,如果指纹传感器不连续,则通过供电继续浪费电力消耗 在规定的时间内被使用。