A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
IN-VEHICLE UNIT, COMMUNICATION SYSTEM FOR VEHICLE AND COMMUNICATION PROCESSING METHOD
To provide an in-vehicle unit that allows for increase in transmission range of a signal in an LF (Low Frequency) band and allows for elimination of the problem of a dead zone range and that can perform radio communication with a portable unit within the increased transmission range.SOLUTION: The in-vehicle unit causes a plurality of transmission antennas disposed on a vehicle so as to be separated from each other to transmit signals and, in response to a response signal from a portable unit having received the signals, performs processing. The in-vehicle unit comprises: a first transmission control unit causing at least two transmission antennas to simultaneously transmit signals; and a second transmission control unit that when no response signal in response to the signals caused to be transmitted from the two transmission antennas is received from the portable unit, causes either one of the transmission antennas to transmit a signal.SELECTED DRAWING: Figure 1
【課題】ＬＦ帯の信号の送信範囲を拡大すると共に、不感帯領域の問題を解消することができ、拡大された送信範囲内にある携帯機と無線通信を行うことができる車載機を提供する。【解決手段】車載機は、車両に離隔配置された複数の送信アンテナから信号を送信させ、信号を受信した携帯機からの応答信号に応じて処理を行う。車載機は、複数の送信アンテナのうち、少なくとも２つの送信アンテナから信号を同時的に送信させる第１送信制御部と、２つの送信アンテナから送信させた信号に対する携帯機からの応答信号を受信しなかった場合、２つの送信アンテナのいずれか一つから信号を送信させる第２送信制御部とを備える。【選択図】図１
IN-VEHICLE UNIT, COMMUNICATION SYSTEM FOR VEHICLE AND COMMUNICATION PROCESSING METHOD
To provide an in-vehicle unit that allows for increase in transmission range of a signal in an LF (Low Frequency) band and allows for elimination of the problem of a dead zone range and that can perform radio communication with a portable unit within the increased transmission range.SOLUTION: The in-vehicle unit causes a plurality of transmission antennas disposed on a vehicle so as to be separated from each other to transmit signals and, in response to a response signal from a portable unit having received the signals, performs processing. The in-vehicle unit comprises: a first transmission control unit causing at least two transmission antennas to simultaneously transmit signals; and a second transmission control unit that when no response signal in response to the signals caused to be transmitted from the two transmission antennas is received from the portable unit, causes either one of the transmission antennas to transmit a signal.SELECTED DRAWING: Figure 1
【課題】ＬＦ帯の信号の送信範囲を拡大すると共に、不感帯領域の問題を解消することができ、拡大された送信範囲内にある携帯機と無線通信を行うことができる車載機を提供する。【解決手段】車載機は、車両に離隔配置された複数の送信アンテナから信号を送信させ、信号を受信した携帯機からの応答信号に応じて処理を行う。車載機は、複数の送信アンテナのうち、少なくとも２つの送信アンテナから信号を同時的に送信させる第１送信制御部と、２つの送信アンテナから送信させた信号に対する携帯機からの応答信号を受信しなかった場合、２つの送信アンテナのいずれか一つから信号を送信させる第２送信制御部とを備える。【選択図】図１
IN-VEHICLE UNIT, COMMUNICATION SYSTEM FOR VEHICLE AND COMMUNICATION PROCESSING METHOD
車載機、車両用通信システム及び通信処理方法
MATSUOKA KENJI (author)
2019-03-22
Patent
Electronic Resource
Japanese
IPC:
E05B
LOCKS
,
Schlösser
/
B60R
Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen
,
VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
/
H01Q
Antennen
,
ANTENNAS, i.e. RADIO AERIALS
/
H04B
TRANSMISSION
,
Übertragung
/
H04M
TELEPHONIC COMMUNICATION
,
Fernsprechverkehr
/
H04Q
Wähltechnik
,
SELECTING
| European Patent Office | 2019
| European Patent Office | 2019
COMMUNICATION SYSTEM FOR VEHICLE, ON-VEHICLE UNIT, AND PORTABLE UNIT
| European Patent Office | 2017