| 发明名称 |
ROAD SIDE RADIO COMMUNICATION EQUIPMENT |
| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily provide normal radio communication between on-vehicle equipment and road side equipment indoors such as in an underground parking lot. SOLUTION: A road side antenna is divided into a road side receiving antenna (106) and a road side transmitting antenna (107) and the first road side transmitting antenna (107) is located at a position lower than the road side receiving antenna (106) so that radio waves can be parallel radiated to a vehicle (102).</p> |
| 申请公布号 |
JP2003023382(A) |
申请公布日期 |
2003.01.24 |
| 申请号 |
JP20010205605 |
申请日期 |
2001.07.06 |
| 申请人 |
HITACHI LTD |
发明人 |
TSUKIJI NOBUYOSHI;NAKANO TETSUO;SAKAMOTO TOSHIYUKI |
| 分类号 |
G07B15/00;H01Q1/32;H04B7/26;H04W4/04;H04W16/28;(IPC1-7):H04B7/26 |
主分类号 |
G07B15/00 |
| 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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