In a video on demand system utilizing asymmetric digital subscriber line (ADSL) interfaces, a plurality of video channels are arranged at a central office into ADSL format and, together with a provisioning channel, are multiplexed into a composite spectrum. This composite spectrum is then transmitted...http://www.google.fr/patents/US5534912?utm_source=gb-gplus-shareBrevet US5534912 - Extended range video on demand distribution system
Extended range video on demand distribution system
