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COMMUNICATION SYSTEM FOR VEHICLE AND PORTABLE MACHINE
PROBLEM TO BE SOLVED: To provide a communication system for a vehicle and a portable machine.SOLUTION: A communication system for a vehicle comprises: an on-board machine which transmits signals from a plurality of antennas provided to the vehicle; and a portable machine which receives signals transmitted from the on-board machine and transmits response signals corresponded to the received signals. The portable machine comprises: a measurement section which measures receive signal strength of signals transmitted from a plurality of antennas respectively; a determination section which determines whether the portable machine exists or not in a specific region set on an outside of the vehicle based on the receive signal strength measured by the measurement section; and a strength change section which makes transmit signal strength differ from when response signals corresponded to the signals are transmitted, in accordance with whether the portable machine exists or not in the specific region.SELECTED DRAWING: Figure 6
【課題】車両用通信システム及び携帯機の提供。【解決手段】車両に設けられた複数のアンテナから信号を送信する車載機と、車載機から送信された信号を受信し、受信した信号に応じた応答信号を送信する携帯機とを備える車両用通信システムであって、携帯機は、複数のアンテナの夫々から送信された信号の受信信号強度を計測する計測部と、計測部にて計測した受信信号強度に基づき、車両の外部に設定した特定の領域内に携帯機が存在するか否かを判定する判定部と、特定の領域内に携帯機が存在するか否かに応じて、信号に対する応答信号を送信する際の送信信号強度を異ならせる強度変更部とを備える。【選択図】図６
COMMUNICATION SYSTEM FOR VEHICLE AND PORTABLE MACHINE
PROBLEM TO BE SOLVED: To provide a communication system for a vehicle and a portable machine.SOLUTION: A communication system for a vehicle comprises: an on-board machine which transmits signals from a plurality of antennas provided to the vehicle; and a portable machine which receives signals transmitted from the on-board machine and transmits response signals corresponded to the received signals. The portable machine comprises: a measurement section which measures receive signal strength of signals transmitted from a plurality of antennas respectively; a determination section which determines whether the portable machine exists or not in a specific region set on an outside of the vehicle based on the receive signal strength measured by the measurement section; and a strength change section which makes transmit signal strength differ from when response signals corresponded to the signals are transmitted, in accordance with whether the portable machine exists or not in the specific region.SELECTED DRAWING: Figure 6
【課題】車両用通信システム及び携帯機の提供。【解決手段】車両に設けられた複数のアンテナから信号を送信する車載機と、車載機から送信された信号を受信し、受信した信号に応じた応答信号を送信する携帯機とを備える車両用通信システムであって、携帯機は、複数のアンテナの夫々から送信された信号の受信信号強度を計測する計測部と、計測部にて計測した受信信号強度に基づき、車両の外部に設定した特定の領域内に携帯機が存在するか否かを判定する判定部と、特定の領域内に携帯機が存在するか否かに応じて、信号に対する応答信号を送信する際の送信信号強度を異ならせる強度変更部とを備える。【選択図】図６
COMMUNICATION SYSTEM FOR VEHICLE AND PORTABLE MACHINE
車両用通信システム及び携帯機
SAKAKIBARA HIROKI (author)
2018-05-10
Patent
Electronic Resource
Japanese
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