| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To decrease the power consumption in a wireless communication system driven by a battery or the like. <P>SOLUTION: The wireless communication system driven by a DC power supply includes: an antenna 1 for transmitting/receiving a wireless signal; a detection modulation detection circuit 3-1 that detects the wireless signal received by the antenna and transmits a detection signal when detecting that the amplitude of the detection signal is a predetermined threshold value or over; a switching circuit 3-3 for outputting a prescribed power supply voltage from the DC power supply depending on an input of the detection signal; a first internal circuit 3-4 with a central processing section activated through the application of the prescribed power supply voltage in response to an output of the switching circuit; and a second internal circuit 3-5 for transmitting data stored in a storage section to the first internal circuit in response to a request signal from the activated first internal circuit. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
