Method of isolating data in a power line communication network

H - Electricity – 04 – B

Patent

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H04B 3/54 (2006.01)

Patent

CA 2397954

Isolating data in a power line communications system. Although plural subscribers receive electric power distributed from a common distribution transformer, it is desirable to isolate their branch lines from one another when those branch lines are used to conduct data communications as a supplement to electric power delivery. This isolation of branch lines is implemented in a centralized way at the distribution transformer, or alternatively, in a distributed way at each subscriber's premises. These implementations are made using low pass filters (which pass the power but block the data) and power line communications routers or power line communications repeaters.

L'invention concerne l'isolation de données dans un système de communications à ligne électrique. Bien que l'alimentation électrique de plusieurs abonnés puisse être distribuée à partir d'un transformateur de distribution commun, il est souhaitable d'isoler leurs lignes de dérivation les unes des autres lorsqu'on les utilise pour communiquer des données en plus de distribuer de l'électricité. L'isolation des lignes de dérivation est mise en place de manière centralisée au niveau du transformateur de distribution, ou de manière distribuée au niveau de chaque local d'abonné. Ces mises en oeuvre sont effectuées à l'aide de filtres passe-bas (qui laissent passer l'électricité mais bloquent les données) et de routeurs de communication à ligne électrique ou de répéteurs de communication à ligne électrique.

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