An on-board apparatus control system comprising a portable device and a vehicle-mounted device is provided. The vehicle-mounted device controls an on-board apparatus by determining whether or not the portable device exists in an authorized area. The vehicle-mounted device causes separate transmission antennas to transmit a request signal and a determination signal, respectively. Responding to the request signal, the portable device transmits a response signal that includes information on a received strength of the determination signal. When the received signal strength of the determination signal is greater than a specified value, the vehicle-mounted device controls the on-board apparatus on assumption that the portable device exists in an unauthorized area even when the response signal is received.


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    Title :

    On-board apparatus control system


    Contributors:

    Publication date :

    2016-07-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G01V Geophysik , GEOPHYSICS / G07C TIME OR ATTENDANCE REGISTERS , Zeit- oder Anwesenheitskontrollgeräte



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