发明名称 |
Communication system between road and vehicle |
摘要 |
Road transmission antennas (4a, 4b) are disposed along a road, each radiating a single cell (E) with electromagnetic waves at the same frequency and of the same content. A vehicle mounted device (3) receiving the waves from the road transmission antennas (4a, 4b) performs antenna pattern diversity reception. When entering a wave blocking area of a large vehicle, a small vehicle is provided with seamless communications with a stationary station (FIG. 1).
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申请公布号 |
US6744823(B1) |
申请公布日期 |
2004.06.01 |
申请号 |
US20000622216 |
申请日期 |
2000.08.15 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
KAMEMURA AKIHIRO;ARAKI TADASHI;KUTSUKI KENJI;TANAKA KEIJI;HIRAKATA NORIYUKI |
分类号 |
G08G1/09;G08G1/0967;H04B7/08;H04B7/10;H04B7/26;(IPC1-7):H04B7/02;H04L1/02 |
主分类号 |
G08G1/09 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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