A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PORTABLE MACHINE, COMMUNICATION APPARATUS, AND COMMUNICATION SYSTEM
PROBLEM TO BE SOLVED: To provide a portable machine, a communication apparatus, and a communication system having a high crime prevention characteristic by determining whether or not a relay attack is being performed.SOLUTION: A communication system 100 comprises: a communication apparatus 20 provided in a vehicle 1; and a portable machine 10 for communicating with the communication apparatus. The communication apparatus 20 comprises: a vehicle transmission unit 22 that has one or more transmission antennas and transmits a plurality of first signals to the portable machine; and a vehicle reception unit 21 for receiving a second signal from the portable machine. The portable machine 10 comprises: a portable machine reception unit 11 for receiving the plurality of first signals from the vehicle transmission unit; a portable machine control unit 15 for detecting signal strength of the plurality of first signals received by the portable machine reception unit to compare the signal strength of the plurality of first signals; and a portable machine transmission unit 12 that is controlled by the portable machine control unit and transmits the second signal to the vehicle reception unit. The portable machine control unit 15 sets an output value of the second signal to a predetermined value when difference between the compared signal strength of the plurality of first signals is equal to or smaller than a threshold.SELECTED DRAWING: Figure 1
【課題】 リレーアタックが行われているか否かを判断し、防犯性の高い携帯機、通信装置、および通信システムを提供する。【解決手段】 車両１に設けられた通信装置２０と、通信装置と通信を行う携帯機１０とを備え、通信装置２０は、１以上の送信アンテナを有し、携帯機へ複数の第１信号を送信する車両送信部２２と、携帯機から第２信号を受信する車両受信部２１と、を備え、携帯機１０は、車両送信部から複数の第１信号を受信する携帯機受信部１１と、携帯機受信部が受信した複数の第１信号の信号強度を検出し、複数の第１信号の信号強度を比較する携帯機制御部１５と、携帯機制御部の制御により、車両受信部へ第２信号を送信する携帯機送信部１２と、を備え、携帯機制御部１５は、比較した複数の第１信号における信号強度の違いが閾値以下である場合、第２信号の出力値を所定値に設定する、通信システム１００。【選択図】 図１
PORTABLE MACHINE, COMMUNICATION APPARATUS, AND COMMUNICATION SYSTEM
PROBLEM TO BE SOLVED: To provide a portable machine, a communication apparatus, and a communication system having a high crime prevention characteristic by determining whether or not a relay attack is being performed.SOLUTION: A communication system 100 comprises: a communication apparatus 20 provided in a vehicle 1; and a portable machine 10 for communicating with the communication apparatus. The communication apparatus 20 comprises: a vehicle transmission unit 22 that has one or more transmission antennas and transmits a plurality of first signals to the portable machine; and a vehicle reception unit 21 for receiving a second signal from the portable machine. The portable machine 10 comprises: a portable machine reception unit 11 for receiving the plurality of first signals from the vehicle transmission unit; a portable machine control unit 15 for detecting signal strength of the plurality of first signals received by the portable machine reception unit to compare the signal strength of the plurality of first signals; and a portable machine transmission unit 12 that is controlled by the portable machine control unit and transmits the second signal to the vehicle reception unit. The portable machine control unit 15 sets an output value of the second signal to a predetermined value when difference between the compared signal strength of the plurality of first signals is equal to or smaller than a threshold.SELECTED DRAWING: Figure 1
【課題】 リレーアタックが行われているか否かを判断し、防犯性の高い携帯機、通信装置、および通信システムを提供する。【解決手段】 車両１に設けられた通信装置２０と、通信装置と通信を行う携帯機１０とを備え、通信装置２０は、１以上の送信アンテナを有し、携帯機へ複数の第１信号を送信する車両送信部２２と、携帯機から第２信号を受信する車両受信部２１と、を備え、携帯機１０は、車両送信部から複数の第１信号を受信する携帯機受信部１１と、携帯機受信部が受信した複数の第１信号の信号強度を検出し、複数の第１信号の信号強度を比較する携帯機制御部１５と、携帯機制御部の制御により、車両受信部へ第２信号を送信する携帯機送信部１２と、を備え、携帯機制御部１５は、比較した複数の第１信号における信号強度の違いが閾値以下である場合、第２信号の出力値を所定値に設定する、通信システム１００。【選択図】 図１
PORTABLE MACHINE, COMMUNICATION APPARATUS, AND COMMUNICATION SYSTEM
携帯機、通信装置、および通信システム
HAMADA KAZUYA (author) / INAGUMA TAKAHIRO (author) / TOMITA YOSUKE (author)
2016-05-19
Patent
Electronic Resource
Japanese
PORTABLE COMMUNICATION APPARATUS AND COMMUNICATION SYSTEM
| European Patent Office | 2018