| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an in-vehicle battery charger capable of automatically stopping a false alarm. <P>SOLUTION: The in-vehicle battery charger 5 is provided with: a microphone 51 detecting a sound in a vehicle interior; a filter 52 extracting only a specific frequency in the sound detected by the microphone 51; a CPU 53 for controlling a charge based on the extracted result in the filter 52; and a charging circuit 54 for outputting a charging radio wave to the periphery of the in-vehicle battery charger 5 under control by the CPU 53. When an alarm sound by a speaker 40 is detected, the output of the charging radio wave is stopped, and as a result, the degree of the interference of the charging radio wave to a calling signal sent to the vehicle interior is suppressed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
