| 摘要 |
An engine startup system of a vehicle permits engine startup under a condition of establishing authentication between an in-vehicle device mounted in the vehicle and a portable device carried by a user. The engine startup system includes: a transponder circuit installed in the portable device and activated upon receiving a query signal transmitted from the in-vehicle device to generate a primary reply signal for the authentication of the in-vehicle device; and a transmitting circuit installed together with the transponder circuit in the portable device and converting the primary reply signal generated by the transponder circuit into a transmission signal of another wavelength band to transmit the transmission signal as a secondary reply signal for the authentication of the in-vehicle device. |
