H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 10/16 (2006.01) H04B 10/08 (2006.01) H04B 10/17 (2006.01) H04J 14/02 (2006.01)
Patent
CA 2206375
As an optical signal to be transmitted, a transmitting station 100 multiplexes a monitoring/control signal SC at a different optical wavelength to the main signal SM, and the optical signal is transmitted via at least two parallel optical transmission lines 10 and 20. A receiving station 200 can process the monitoring/control signal SC by separating it from the main signal MS, which thus need not be converted to an optical signal, and the circuit scale is not increased. In addition, a trouble occurring in either system may be coped with by adopting the optical system which is transmitted via the other system.
L'invention est constituée par une station de transmission 100 de signaux lumineux qui multiplexe un signal de surveillance/commande à une longueur d'onde lumineuse différente de celle du signal principal, le signal lumineux étant transmis via au moins deux lignes de transmission optiques parallèles 10 et 20. Une station de réception 200 peut traiter le signal de surveillance/commande en le séparant du signal principal qu'il n'est donc pas nécessaire de convertir en signal lumineux, d'où simplification du circuit. De plus, les défaillances de l'un ou l'autre système peuvent être contrées par l'utilisation du signal lumineux transmis par l'autre système.
Corporation Nec
Smart & Biggar
LandOfFree
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