| 摘要 |
To transmit binary signals of at least two channels with the aid of block codes, the binary signals are multiplexed at the transmission end by means of a time division multiplexer, scrambled by means of a scrambler, re-coded by means of a block coder and provided, by means of a code violation generator, with a frame identification signal. At the receiving end, the transmitted, re-coded signals are re-coded into binary representation by means of a decoder, maintained in frame synchronisation with the transmitting end by means of a code violation detector, descrambled by means of a descrambler and demultiplexed by means of a time division demultiplexer. The block length of the coder or decoder, the frame length of the time division multiplex signal generated by the time division multiplexer or time division demultiplexer and the word length of the scrambler or descrambler have a fixed integral relationship with one another, so that only one synchronisation device is to be provided in each case at the transmitting and receiving ends.
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