A keyless entry device capable of easily distinguishing between a request signal from a fraudulent relay device and a request signal transmitted from a true vehicle-side device is provided. A vehicle-side device includes a vehicle-side control un it that controls transmission of a request signal and performs predetermined control when authentication is successful on th e basis of an answer signal, a portable device includes a port able-device control unit that detects reception intensity info rmation of the request signal transmitted from the vehicle-sid e device and transmits an answer signal based on the reception intensity, the vehicle-side control unit controls a vehicle-s ide transmission unit so that the vehicle-side transmission un it transmits the request signal including the determination si gnal having an intensity level different for each section, and the vehicle-side control unit or the portable-device control unit determines whether or not the request signal is a true si gnal on the basis of a fluctuation in the reception intensity in each section of the determination signal received by the po rtable device.


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    Title :

    KEYLESS ENTRY DEVICE


    Additional title:

    VORRICHTUNG FÜR SCHLÜSSELLOSEN ZUGANG
    DISPOSITIF D'ENTRÉE SANS CLÉ


    Contributors:

    Publication date :

    2019-05-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H04Q Wähltechnik , SELECTING / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H04B TRANSMISSION , Übertragung / E05B LOCKS , Schlösser




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    MIYAZAWA AKIRA | European Patent Office | 2016

    Free access