| 摘要 |
PURPOSE:To prevent the leakage of data between channels with a simple constitution, by scrambling output data series of each channel at a bundle, transmitting data with replaced output bits and inverting the data at the reception side. CONSTITUTION:Data series (a-c) of channels chA-chC are inputted to a parallel serial converter 41, its output data is randomized at a scrambler 43 and inputted to a serial parallel converter 45 as a data series (d). The bit arrangement of signals outputted from the converter 45 as data series (alpha-gamma) is replaced at a bit arrangement converting section 47 to become data series (x-z), the signals are multiplexed at a transmission section 11 and outputted serially. A reception section 12 parallel-converts reception data, and the bit arrangement is restored at a bit arrangement restoring section 48 and the data are converted serially at a parallel serial conversion section 46 and inputted to a descrambler 44, this output is serial/parallel-converted 42 to restore the data series (a-c) of each CH. If the frame synchronism is not correctly taken, no random signal series is outputted and the leakage of data can be prevented. |
