Broad band telecommunication system

Claim 1

A broadband telecommunication system, comprising: a light waveguide lying between a central transmission location and a receiving location subscriber terminal, and carrying a plurality of time-division multiplexed signals in individual time channels pulse-modulated at the transmission location corresponding to a plurality of video signals; means for converting the pulse-modulated video signals in the individual time channels into PAM signals connected to frequency band pass filter means transmissive for a frequency band from a sequence of frequency bands forming a frequency spectrum of the PAM signal; output signals of said frequency band pass filter means being connected to a distribution line connecting to video receiver means at the subscriber terminal; the video signals being transmitted in time channels corresponding to said video receiver means operated at the subscriber terminal; and said means for converting providing said PAM signals such that multiples of a clock frequency of the PAM signals lie at least approximately at band limits of a plurality of television channels on which said video receiver means is operable, said PAM signals being supplied to said frequency band pass filter means whose output signals proceed to said subscriber distribution line and video receiver means operated at the subscriber terminal.