Route guidance system for roadway vehicles

Details Route guidance system for roadway vehicles Route guidance system for roadway vehicles

1978-04-03

1982-01-19

Stewart, David L.

Multiplex communications

Wide area network

Packet switching

370109, H04B 166

Patent

active

043118763

ABSTRACT:
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.

REFERENCES:
patent: 2429607 (1947-10-01), Capen
patent: 3757290 (1973-09-01), Ross
patent: 3947807 (1976-03-01), Tyler
patent: 3991485 (1976-11-01), Golenski
patent: 4009375 (1977-02-01), White
Telemetry, the Road Map of the Future, Charles D. LaFond, Electronic Design 12, Jun. 7, 1969, pp. 25, 26.

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