| CPC G05F 1/46 (2013.01) [H04B 10/693 (2013.01)] | 22 Claims |
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1. An electronic device comprising:
a first connecting wire configured to be connectable to a first signal wire of a cable, the first signal wire of the cable transmitting a first signal between the electronic device and an external device that is connectable to the cable;
a first resistor disposed between the first connecting wire and a power source of the electronic device; and
a second connecting wire configured to be connectable to a second signal wire of the cable, the second signal wire of the cable transmitting a second signal from the external device to the electronic device,
wherein a resistance value of the first resistor is set such that an output voltage from the second connecting wire is lower than a reference value when a voltage of the power source is input to the second connecting wire via the first connecting wire and the external device in a state in which the first signal wire and the second signal wire are electrically connected to one another and the second signal is not input to the second signal wire from the external device.
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