Patent ID: 6430742
Filing Date: 2002-08-06
Classification: H04H,H04N

Abstract:
A head-end device for a television signal distribution system serving a plurality of user installations, intended to feed at least two downgoing cables and comprising:a set of various separate sources of television signals transmitted by satellite, called satellite sources, each of the downgoing cables being fed with different signals coming from satellite sources, a source of television signals transmitted by terrestrial channel, called terrestrial source, and couplers, called terrestrial signal couplers, for repeating the signals from the terrestrial source on each of the downgoing cables by adding them to the signals of a satellite source, characterized in that the device comprises at least a down-converter for selecting from a satellite source a signal that transports digital data so as to lower the signal frequency and bring the frequency to within the frequency range of the signals transmitted by the terrestrial source, and at least a coupler, called digital signal coupler, for inserting the signal that has a lowered frequency between those coming from the terrestrial source.