System for protected data transmission to track-bound vehicles

Details System for protected data transmission to track-bound vehicles System for protected data transmission to track-bound vehicles

1977-09-02

1979-01-09

Blix, Trygve M.

Railway switches and signals

Train dispatching

Central signal control

246187B, 3401461BA, B61L 2700

Patent

active

041335040

ABSTRACT:
The specification discloses a system for protected data transmission between a control center and a plurality of track-bound vehicles. The data is not acknowledged as correct until it is contained in two successive data messages which are compared. The comparison indicates whether the difference between the two successive messages is within predetermined limits.

REFERENCES:
patent: 3737577 (1973-06-01), Birkin
patent: 3794834 (1974-02-01), Auer

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