EP 0894061 B1 20020206 - SELECTIVE DATA TRANSMISSION PROCESS AND DEVICE FOR COMMUNICATION SYSTEMS USED IN TRAFFIC ENGINEERING
Title (en)
SELECTIVE DATA TRANSMISSION PROCESS AND DEVICE FOR COMMUNICATION SYSTEMS USED IN TRAFFIC ENGINEERING
Title (de)
VERFAHREN UND VORRICHTUNG ZUR SELEKTIVEN DATENÜBERTRAGUNG IN VERKEHRSTECHNISCHEN KOMMUNIKATIONSSYSTEMEN
Title (fr)
PROCEDE ET DISPOSITIF DE TRANSMISSION SELECTIVE DE DONNEES DANS DES SYSTEMES DE COMMUNICATIONS UTILISES EN TECHNIQUE DE LA CIRCULATION
Publication
Application
Priority
- CH 9700153 W 19970417
- CH 99696 A 19960419
Abstract (en)
[origin: WO9739934A1] A process is disclosed for communication systems used in traffic engineering and having an earthbound transponder (TP11, ..., TP32) for each corresponding track section. The transponders transmit first data through a first path of transmission to polling machines arranged on vehicles (FZ1, ..., FZ5). Based on these first data, the concerned polling machine ascertains whether second data transmitted through a second path of transmission to the polling machine are really destined for the vehicles (FZ1, ..., FZ5). The signal in the second path of transmission destined for the vehicles (FZ1, ..., FZ5) of a section of the track is individually modulated or transmitted by a time- or frequency-multiplexing process. Depending on the selected modulation or multiplexing, coefficients are built at the emitter side which are then transmitted through the first path of transmission, extracted at the receiver side and used to demodulate or demultiplex the signal transmitted through the second path of transmission. The physical separation of the transmitted signals makes it possible to ascertain whether the signals received through the second path of transmission are destined for this section of the track or the vehicles (FZ1, ..., FZ5) that circulate thereon.
IPC 1-7
B61L 3/22; B61L 3/12; G08G 1/123; H04J 1/12; H04J 3/10; H04B 3/32
IPC 8 full level
B61L 3/22 (2006.01)
CPC (source: EP US)
B61L 3/225 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IT LI NL PT SE
DOCDB simple family (publication)
WO 9739934 A1 19971030; AT E212922 T1 20020215; AU 2501497 A 19971112; AU 709263 B2 19990826; CN 1216959 A 19990519; DE 59706314 D1 20020321; DK 0894061 T3 20020527; EP 0894061 A1 19990203; EP 0894061 B1 20020206; ES 2168624 T3 20020616; MX 9702837 A 19980531; NO 984820 D0 19981015; NO 984820 L 19981221; PT 894061 E 20020731; TW 327716 B 19980301; US 6234428 B1 20010522
DOCDB simple family (application)
CH 9700153 W 19970417; AT 97916293 T 19970417; AU 2501497 A 19970417; CN 97194237 A 19970417; DE 59706314 T 19970417; DK 97916293 T 19970417; EP 97916293 A 19970417; ES 97916293 T 19970417; MX 9702837 A 19970418; NO 984820 A 19981015; PT 97916293 T 19970417; TW 86105945 A 19970505; US 14205498 A 19980917