EP 0188925 B1 19920311 - METHOD AND ARRANGEMENT FOR DATA TRANSMISSION BETWEEN MOVING VEHICLES ON A ROAD
Title (en)
METHOD AND ARRANGEMENT FOR DATA TRANSMISSION BETWEEN MOVING VEHICLES ON A ROAD
Publication
Application
Priority
FR 8415977 A 19841018
Abstract (en)
[origin: US4723737A] For data communication in the form of messages between railways vehicles moving over a same track, short identical emissions at random times by modulating a directional microwave beam whose angular opening is sufficient in the horizontal direction for maintaining communication in bends of said track and switches and in the vertical direction for maintaining communication during changes in the profile of the track.
IPC 1-7
IPC 8 full level
B61L 23/34 (2006.01); G08G 1/16 (2006.01); H04B 5/00 (2006.01); H04B 7/26 (2006.01)
CPC (source: EP US)
B61L 23/34 (2013.01 - EP US); G08G 1/163 (2013.01 - EP US)
Citation (examination)
GB 1286251 A 19720823 - EMI LTD
Designated contracting state (EPC)
BE DE GB IT
DOCDB simple family (publication)
FR 2572043 A1 19860425; FR 2572043 B1 19870213; DE 3585610 D1 19920416; EP 0188925 A1 19860730; EP 0188925 B1 19920311; JP S61181768 A 19860814; US 4723737 A 19880209
DOCDB simple family (application)
FR 8415977 A 19841018; DE 3585610 T 19851018; EP 85402022 A 19851018; JP 23143885 A 19851018; US 78872185 A 19851017