| 摘要 |
<p>In the centre of a facility for transmitting generally accessible information, the available stereophonic radio broadcasts or other generally accessible information are combined by a programme multiplexer 40 into a time-division-multiplex signal with programme-assigned time slots, and distributed over a first programme bus 44 to a plurality of time stages 45. From this signal, each time stage 45 forms a new time-division-multiplex signal with subscriber-assigned time slots, which is distributed to subscriber facilities via a second programme bus 46 associated with the time stage 45. To control the time stages 45, and thus to select the programmes, each subscriber is connected with the centre via a backward channel 7. <IMAGE></p> |
