| 摘要 |
<P>PROBLEM TO BE SOLVED: To grasp a failure condition in a wireless unit, even in an environment without special facilities when a communication terminal apparatus with plural wireless units breaks down. <P>SOLUTION: In a communication terminal apparatus having a first wireless unit and a second wireless unit, the first wireless unit or the second wireless unit transmits a test signal to the other wireless unit, and the other wireless unit receives the test signal and demodulates the received test signal; if the demodulation result is normal, it is discriminated that modulation and demodulation by the first wireless unit is being carried out in a normal manner. <P>COPYRIGHT: (C)2010,JPO&INPIT |
