作者: Kazunori Abe
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摘要: An electronic endoscope (10) and a processor (11) of an apparatus (2) transmit receive signals via radio waves within predetermined frequency band to which plural channels are allocated. The has transmission switching circuit (42) switches between first second bands, channel detection (43) for detecting available channel. reception (62) receptionfrequency bands,and (63) circuits automatically switch the bands according results circuits.