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    • 3. 发明授权
    • Mobile device having an overcurrent cutoff function
    • 具有过电流截止功能的移动设备
    • US07336978B2
    • 2008-02-26
    • US10787157
    • 2004-02-27
    • Ji-sang Kim
    • Ji-sang Kim
    • H04B1/38
    • H04W52/0296Y02D70/142Y10T307/625
    • A mobile device having an overcurrent cutoff function. In a mobile device having at least one function module, the mobile device includes a main power supply which supplies power to the mobile device, a power detection unit which detects whether power from the main power supply to the mobile device is cut off, and generates a power cutoff signal when the power is cut off, a backup power supply unit which supplies a backup power to the mobile device when the power from the main power supply to the mobile device is cut off, and a control unit which converts potential levels of the data lines and control signal lines between the control unit and the function module to a predetermined potential level in response to the power cutoff signal. Such a mobile device can minimize the consumption of the backup battery built into the mobile device when the main battery supplying main power to the mobile device is detached from the mobile device, to thereby extend the time for preserving data stored in the mobile device due to the minimized consumption of the backup battery.
    • 具有过电流切断功能的移动设备。 在具有至少一个功能模块的移动设备中,移动设备包括向移动设备供电的主电源,检测来自主电源到移动设备的电源是否被切断的电力检测单元,并且产生 断电时的断电信号;当从所述主电源向所述移动装置的电力切断时,向所述移动装置供给备用电力的备用电源单元;以及控制单元, 控制单元和功能模块之间的数据线和控制信号线响应于电源切断信号而达到预定电位电平。 当向移动设备提供主电源的主电池与移动设备分离时,这种移动设备可以最小化内置于移动设备中的备用电池的消耗,从而延长用于保存存储在移动设备中的数据的时间,因为 备用电池的消耗最小化。