公开(公告)号：US20120120989A1

公开(公告)日：2012-05-17

申请号：US13294536

申请日：2011-11-11

申请人： Akihiro TORIYAMA ,  Kazuki WATANABE ,  Makoto SHINDO ,  Makoto TOYOSHIMA ,  Yosuke TANNO

发明人： Akihiro TORIYAMA ,  Kazuki WATANABE ,  Makoto SHINDO ,  Makoto TOYOSHIMA ,  Yosuke TANNO

IPC分类号： H04B1/40

CPC分类号： G06K19/0712

摘要： There is included a detection unit for detecting a magnitude of a surplus of a direct current to a source voltage generated by a voltage generation unit generating the source voltage from the direct current obtained by rectifying a signal inputted from an antenna terminal. A data processing unit operating at the source voltage and performing data processing on a transmission/reception signal includes a clock control unit for determining a frequency of a clock signal for the data processing based on the magnitude of the surplus current detected by the detection unit in a state where a frequency of the clock signal is set to a predetermined reference frequency. Since the power consumed by the data processing unit at the time of detecting the surplus of the direct current is determined by the specific reference frequency, the surplus of the direct current can be detected as an absolute surplus.

摘要翻译： 包括检测单元，用于检测由从由天线端子输入的信号进行整流获得的直流电流产生源电压的电压产生单元产生的直流电流的剩余量。 以源电压工作并对发送/接收信号执行数据处理的数据处理单元包括时钟控制单元，用于基于由检测单元检测到的剩余电流的大小来确定用于数据处理的时钟信号的频率 将时钟信号的频率设定为规定的基准频率的状态。 由于在检测到直流电的剩余时由数据处理单元消耗的功率由特定参考频率确定，所以可以将直流的剩余检测为绝对剩余。