ANORDNING VID TRADRADIOSYSTEM

摘要

A wired broadcasting system in which subscribers are connected through individual cables to a programme exchange incorporating means actuable by a subscriber for selecting a particular one of a plurality of programmes to be transmitted to the subscriber through his own individual channel. Means are provided for allocating the programmes into three or more groups, and means are provided at the exchange or at the subscriber units for selectively denying two or some of the groups of programmes to subscribers.