A vehicular control system includes a smart key carried by a user and operated by an embedded battery and a verification ECU mounted in a vehicle. A wireless communication is made between the smart key and the verification ECU. The smart key performs periodically a switchover of a detection sensitivity for detecting a transmission electric wave transmitted from the verification ECU between a normal sensitivity and a high sensitivity. The high sensitivity has a detection area of the transmission electric wave greater than a detection area of the normal sensitivity. The constant use of the high sensitivity is unnecessary to detect the transmission electric wave. This enables a reduction of the consumed electric current of the battery for detecting the transmission electric wave with the high sensitivity.


    Access

    Download


    Export, share and cite



    Title :

    Vehicular control system and portable terminal


    Contributors:
    KATOU KENJI (author)

    Publication date :

    2016-02-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



    VEHICULAR PORTABLE TERMINAL OPERATION SYSTEM

    ITO MASAYA / OZAKI YOSHITAKA / UENO TAKEMI et al. | European Patent Office | 2015

    Free access

    VEHICLE CONTROL SYSTEM, PORTABLE TERMINAL, AND VEHICULAR DEVICE

    KUSUNOSE YUJI | European Patent Office | 2016

    Free access

    Vehicle control system, portable terminal, and vehicular device

    KUSUNOSE YUJI | European Patent Office | 2018

    Free access

    VEHICLE CONTROL SYSTEM, PORTABLE TERMINAL, AND VEHICULAR ONBOARD DEVICE

    NAGAI NOBUYOSHI / OKABE NOBUYASU | European Patent Office | 2020

    Free access

    VEHICULAR PORTABLE TERMINAL HOLDING DEVICE

    MITA HIROYUKI / MIZOBATA HIROSHI | European Patent Office | 2021

    Free access