发明名称 |
Route guidance system for roadway vehicles |
摘要 |
A central station of a route guidance system collects traffic data from various points of a city area and updates aural routing information stored in roadside remote stations at periodic intervals. A moving vehicle senses the location of a roadside station to transmit a coded destination signal thereto where it is decoded to retrieve desired routing information. The latter is compressed in time dimension and transmitted back to the vehicle for storage in a storage device which is later retrieved at such a rate as to reproduce the original aural information.
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申请公布号 |
US4311876(A) |
申请公布日期 |
1982.01.19 |
申请号 |
US19780893601 |
申请日期 |
1978.04.03 |
申请人 |
NISSAN MOTOR COMPANY, LTD. |
发明人 |
ENDO, HIROSHI;BABA, KOUSAKU;MATSUMURA, AKIRA |
分类号 |
H04B7/26;G08G1/09;G08G1/0968;H04B1/66;(IPC1-7):H04B1/66 |
主分类号 |
H04B7/26 |
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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