Patent ID: 8467866

Claim:
A biosignal detecting apparatus, comprising: a pair of detecting electrodes configured to be attached directly to human skin of a human body and configured to detect a biosignal from the human body; a biosignal detecting circuit configured to receive the biosignal detected by the detecting electrodes and configured to process the detected biosignal; a transmitting electrode configured to transmit the biosignal processed by the biosignal detecting circuit to an external apparatus provided away and remote from the human body and configured to transmit a radio wave directly to a first of the pair of detecting electrodes, the radio wave being generated by a circuit in the biosignal detecting apparatus, when the transmitting electrode is configured to be directly attached to human skin of the human body; and a circuit connected to the first of the pair of the detecting electrodes configured to receive the radio wave transmitted from the human body via the transmitting electrode and configured to execute impedance matching between the biosignal detecting apparatus and the human body based on the received radio wave transmitted from the human body via the transmitting electrode, wherein a capacitance value of the circuit is adjusted based on a radio wave test signal.