The present invention provides greater capability and flexibility than existing cable headends. Specifically, the invention comprises a modular design for a cable headend and a combiner component for cable headend. The invention is particularly useful in cable television program delivery systems...http://www.google.fr/patents/US5682195?utm_source=gb-gplus-shareBrevet US5682195 - Digital cable headend for cable television delivery system
Digital cable headend for cable television delivery system