Patent ID: 9637086
Date: 2017-05-02
CPC Classifications: B60R,G07C

Claim:
1. A smart system comprising an onboard system and a portable device carried by a user, wherein the onboard system includes: a first modulation portion that performs modulation in a first modulation system using specified request data; and a first transmission antenna that transmits a request signal resulting from the modulation to the portable device; wherein the portable device includes: a first reception antenna that receives the request signal; a first demodulation portion that performs demodulation in a first demodulation system corresponding to the first modulation system using the request signal received by the first reception antenna; an answer data output portion that outputs specified answer data based on acquisition of the request data resulting from demodulation in the first demodulation portion; a switching portion that outputs the output answer data for transmission; a second modulation portion that performs modulation in a second modulation system using the answer data for transmission output from the switching portion; and a second transmission antenna that transmits an answer signal resulting from the modulation to the onboard system; wherein the onboard system includes a smart drive portion that receives the answer signal and performs smart drive to operate an actuator in the vehicle based on the answer data contained in the received answer signal; wherein the first modulation portion performs modulation using specified counter-RA data according to the first modulation system and the first transmission antenna transmits a counter-RA signal resulting from the modulation to the portable device; wherein the first reception antenna receives the transmitted counter-RA signal; wherein, when the first reception antenna receives the counter-RA signal, the switching portion outputs the counter-RA signal received by the first reception antenna to the second modulation portion while bypassing the first demodulation portion to avoid demodulation of the counter-RA signal in the first demodulation system by the first demodulation portion; wherein the second modulation portion performs modulation according to the second modulation system using the counter-RA signal that has bypassed the first demodulation portion; wherein the second transmission antenna transmits a counter-RA modulation signal resulting from the modulation of the counter-RA signal to the onboard system; and wherein the onboard system includes an RA determination portion that determines whether to allow the smart drive performed by the smart drive portion based on delay time of timing to receive the counter-RA modulation signal with reference to timing to transmit the counter-RA signal.