| 摘要 |
PURPOSE:To transmit analog signals securely by differentiating a Manchester- coded time-division signal from a synchronizing a signal. CONSTITUTION:At a transmitter 1, submultiplexers 105 and 106 demultiplex and store a time-division signal from a central multiplexer 102 temporarily, and channel audio signals from subordinate tape reproducers 104 and 107 are converted into digit signals respectively. Then while those digital signals are multiplexed, they are converted into time-division signals by Manchester-coding and a synchronizing signal is superposed before outputting operation. At a receiver 2, the output is sent to receiver lines 108a, 108b... and 109a, 109b... and matched by matching resistances 110 and 112 and each receiver selects a desired channel and sound volume. |
