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    • 3. 发明申请
    • TERMINAL HAVING REAL TIME CLOCK (RTC) OPERATOR AND METHOD OF RTC OPERATION USING THE SAME
    • 具有实时时钟(RTC)的终端和RTC操作的方法
    • US20090113222A1
    • 2009-04-30
    • US12257927
    • 2008-10-24
    • Ju Hwan LEE
    • Ju Hwan LEE
    • G06F1/00
    • G06F1/14
    • A method of operating a Real Time Clock (RTC) in a terminal is provided. The method includes detecting a clock signal transmitted to an RTC block when the main power supply is switched off, and supplying a power to the RTC block for its operation by charging and discharging the power periodically supplied from the backup battery according to the detected clock signal. A DC/DC converter connected to a backup battery is periodically switched on and off, and a capacitor is charged and discharged using the power of the backup battery, thereby avoiding supplying power from a backup battery continuously to an RTC block. Therefore, power consumption is reduced and a duration of time for maintaining RTC data is extended.
    • 提供了一种在终端中操作实时时钟(RTC)的方法。 该方法包括当主电源关闭时检测发送到RTC模块的时钟信号,并根据检测到的时钟信号,通过对从备用电池周期性提供的功率进行充电和放电来向RTC模块供电以供其操作 。 连接到备用电池的DC / DC转换器周期性地打开和关闭,并且使用备用电池的电力对电容器进行充电和放电,从而避免从后备电池向RTC块连续供电。 因此,功耗降低,维持RTC数据的持续时间延长。