PROBLEM TO BE SOLVED: To properly unlock a vehicle door by determining a relay attack with high accuracy.SOLUTION: A request signal is transmitted to a portable machine, and an answer signal transmitted by the portable machine according to the request signal is received. At the time, a response time until the answer signal is received after transmitting the request signal is measured. When the response time is shorter than a threshold time stored corresponding to identification information included in the answer signal received by the reception section, a door is unlocked. When the response time is longer than the threshold time, the door is not unlocked. The threshold time used for the determination at the time is determined on the basis of a result obtained by an actual measurement of the response time in the measurement section of a vehicle door unlocking device.SELECTED DRAWING: Figure 8

    【課題】リレーアタックの判定を高い精度で行うことによって、車両のドアを適切に解錠する。【解決手段】携帯機に向けてリクエスト信号を送信し、リクエスト信号に応じて携帯機が送信したアンサー信号を受信する。この際、リクエスト信号を送信してからアンサー信号を受信するまでの応答時間を計測する。そして、受信部が受信したアンサー信号に含まれる識別情報に対応付けて記憶された閾時間よりも応答時間が短い場合はドアを解錠し、該閾時間よりも応答時間が長い場合はドアを解錠しないこととしている。このときの判断に利用される上述の閾時間は、応答時間を当該車両ドア解錠装置の前記計測部で実測した結果に基づいて決定される。【選択図】図8


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    Title :

    VEHICLE DOOR UNLOCKING DEVICE


    Additional title:

    車両ドア解錠装置


    Contributors:

    Publication date :

    2018-02-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

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



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