Patent ID: 6093980
Filing Date: 2000-07-25
Classification: B60R

Abstract:
A key apparatus for a vehicle comprising:a tranmitting circuit which is provided with an instructing switch for instructing transmission of a first signal, and which transmits the first signal by radio waves in accordance with the instruction by the instructing switch;an electric power receiving/signal transmitting circuit for receiving electric power from an electric power transmitting circuit provided in the vehicle and for transmitting a second signal in a case in which the electric power receiving/signal transmitting circuit receives the electric power; anda prohibiting circuit for prohibiting transmission of the first signal in a case in which the second signal is transmitting, including:a receiver for receiving a third signal transmitted from the vehicle and expressing prohibition of transmission of the first signal, anda signal transmission prohibiting circuit for prohibiting transmission of the first signal while the third signal is being received by the receiver.