In an on-board communication system, an on-board device transmits detection signals from a plurality of antennas provided in a vehicle, and a plurality of portable devices transmits response signals corresponding to the received detection signals. The on-board device performs position detection of the portable devices by receiving the response signals transmitted from the portable devices. Prior to transmission of the detection signals, the antennas transmit a processing start signal. The processing start signal and the detection signals are signals received in common by the plurality of portable devices. Each portable device includes a portable reception unit that receives the detection signals, and a portable transmission unit that, when the portable reception unit has received the detection signals, transmits the response signals, which include information corresponding to the received detection signals.


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    Title :

    ON-BOARD COMMUNICATION SYSTEM, AND ON-BOARD DEVICE


    Contributors:

    Publication date :

    2017-05-04


    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 / E05B LOCKS , Schlösser / G01S RADIO DIRECTION-FINDING , Funkpeilung



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