Communication system capable of transmitting a plurality of...

H - Electricity – 04 – J

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H04J 3/02 (2006.01) H04B 10/12 (2006.01) H04B 10/24 (2006.01) H04J 14/02 (2006.01)

Patent

CA 2233798

In a communication system for carrying out bi-directional communication between a station device and a plurality of subscriber devices through an optical transmission path by the use of a time compression multiplexing technique, the station. device multiplexes a downward transmission signal and at least one downward additional signal into a downward multiplexed signal and sends the downward multiplexed signal in to a downward optical signal through the optical transmission path. The downward multiplexed signal is located within a predetermined time interval determined by the time compression multiplexing technique and is demultiplexed into the downward transmission signal and the at least one downward additional signal by a demultiplexer placed at each of the subscriber devices. With this structure, a video signal or the like can be also transmitted in the time compression multiplexing system together with the transmission signal from the station device to the plurality of the subscriber devices. This makes it possible to respond to multimedia requirements.

Dans un système de transmission acheminant des communications bidirectionnelles entre une station et un certain nombre de dispositifs d'abonné sur un trajet de transmission optique suivant une technique de multiplexage par compression temporelle, la station multiplexe un signal de transmission d'aval et au moins un signal supplémentaire d'aval afin de produire un signal multiplexé d'aval et envoie ce dernier sous la forme d'un signal optique d'aval sur le trajet de transmission optique. Le signal multiplexé d'aval se situe dans un intervalle de temps prédéterminé, qui est déterminé suivant la technique du multiplexage par compression temporelle. Il est démultiplexé afin de produire le signal de transmission d'aval et le ou les signaux supplémentaires d'aval par un démultiplexeur situé à l'emplacement de chacun des dispositifs d'abonné. Cette structure permet également de transmettre un signal vidéo ou l'équivalent dans le système de multiplexage par compression temporelle conjointement avec le signal de transmission provenant de la station vers les dispositifs d'abonné. Il est ainsi possible de répondre à des besoins multimédias.

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