Signalling system

H - Electricity – 04 – B

Patent

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Details

H04B 10/26 (2006.01) H04B 10/10 (2006.01) H04B 10/207 (2006.01)

Patent

CA 2279934

A point to multipoint signalling system is provided between a first signalling device and a plurality of second signalling devices. The first signalling device comprises means for receiving signals transmitted from the plurality of second signalling devices, means for modulating the received signals with respective modulation data for the second signalling devices and means for reflecting the modulated signals back to the respective second signalling devices. Each second signalling device comprises means for generating a signal, means for transmitting the generated signal to the first signalling device, means for receiving the modulated signal which is reflected back from the first signalling device and means for retrieving the modulation data from the reflected signal. A retro-reflector and a multipoint to point signalling system are also provided.

Un système de signalisation point à multipoint est prévu entre un premier dispositif de signalisation et une pluralité de deuxième dispositifs de signalisation. Le premier dispositif de signalisation comprend un système qui permet de recevoir des signaux envoyés par les deuxième dispositifs de signalisation, un système qui permet de moduler les signaux reçues avec des données de modulation associées aux deuxième dispositifs de signalisation et un système qui sert à réfléchir et renvoyer les signaux modulés aux deuxième dispositifs de signalisation respectifs. Chaque deuxième dispositif de signalisation comprend un système qui génère un signal, un système qui envoie le signal généré au premier dispositif de signalisation, un système qui reçoit le signal modulé qui est renvoyé par le premier dispositif de signalisation et un système qui récupère les données de modulation dans le signal renvoyé. Un rétroréflecteur et un système de signalisation multipoint à point sont également décrits.

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