Communication systems using passive rf routing

Details Communication systems using passive rf routing Communication systems using passive rf routing

H - Electricity

04

J

H04J 99/00 (2009.01) G02B 6/34 (2006.01) H04J 1/08 (2006.01) H04N 7/22 (2006.01) H04J 15/00 (2006.01)

Patent

CA 2129603

Communication between an upstream point, such as a TV-source headend followed by a fiber optic line, and a number of downstream points, such as coaxial cable connected subscriber locations, is achieved by wavelength or frequency demultiplexing a spectrum of downstream radio-frequency signals with a surface-acoustic-wave (SAW) demultiplexer-multiplexer and distributing the demultiplexed signals to the downstream points, for example through the cables.

Dans la présente invention, la communication entre un point amont, tel qu'une tête de ligne source de signaux de télévision en amont d'une ligne à fibres optiques, et un certain nombre de points aval, tels que des câbles coaxiaux connectés à des installations d'abonné, est établie par un démultiplexage optique ou fréquentiel d'un spectre de signaux radiofréquence transmis vers l'aval qui est effectué au moyen d'un démultiplexeur-multiplexeur à ondes acoustiques de surface, et par une distribution des signaux démultiplexés aux points aval, par l'intermédiaire des câbles par exemple.

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