A television communication system distributes plural VSB digitally encoded TV channels via an optical transmission link to one or more distribution terminals. At the headend the frequency band of each of the VSB signals is shifted down to baseband and transmitted in digital format. At each station along...http://www.google.fr/patents/US4183054?utm_source=gb-gplus-shareBrevet US4183054 - Digital, frequency-translated, plural-channel, vestigial sideband television communication system
Digital, frequency-translated, plural-channel, vestigial sideband television ...
