PROBLEM TO BE SOLVED: To provide a vehicle communication device, a portable machine and a vehicle communication system that can reduce the demerit of long-distant communication to a low level while enabling long-distance communication between a vehicle communication device and a portable machine.SOLUTION: A portable machine for communicating with a vehicle communication device mounted on a vehicle by using electronic waves in order to control devices of the vehicle has creating means for creating transmission data containing specification data of a transmission rate, transmission means for transmitting the created transmission data, and reception means for receiving a return signal of the transmission data. The creating means creates the transmission data containing the specification data of a first transmission rate. When the return signal of the transmission data is not received, the creating means creates transmission data containing specification data of a second transmission rate lower than the first transmission rate.SELECTED DRAWING: Figure 6
【課題】車両通信装置と携帯機との通信の長距離化を図りつつ、長距離化のデメリットを低く抑えることのできる車両通信装置、携帯機および車両通信システムを提供すること。【解決手段】車両の装備を制御するために、車両に搭載された車両通信装置と電波を用いて通信する携帯機であって、伝送レートの指定データを含む送信データを作成する作成手段と、作成された送信データを送信する送信手段と、送信データの返送信号を受信する受信手段と、を備え、作成手段は、第1伝送レートの指定データを含む送信データを作成し、送信データの返送信号が受信されない場合に、第1伝送レートより低い第2伝送レートの指定データを含む送信データを作成する構成を採る。【選択図】図6
VEHICLE COMMUNICATION DEVICE, PORTABLE MACHINE AND VEHICLE COMMUNICATION SYSTEM
車両通信装置、携帯機および車両通信システム
08.02.2016
Patent
Elektronische Ressource
Japanisch
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