| 摘要 |
PURPOSE:To improve the utilizing efficiency of a transmission line, by sampling an analog signal different from a normal analog signal in the band width and noise standard, by a sampling pulse having a frequency 1.5 time that of a normal sampling pulse, converting the sampling value into a digital signal of [4/3X N]-bit, and transmitting the digital signal by using two-channel's share of the normal signal channel. CONSTITUTION:A multiplex clock signal Cb from a PCM transmitter B and a 8kHz sampling pulse Cf are applied to a control pulse generator C, a 12kHz sampling pulse C2 and a sectioning identification signal C1 as shown in Fig. (d) are generated, applied to a PCM transmitter D, a different kind of analog signal inputted from an input terminal A25 is sampled with the sampling pulse C2, the sampling value is converted into a 10-bit digital signal and outputted serially in synchronizing with a multiplex clock signal Cb. The digital signal is a signal (d), transmitted to a buffer memory device E and stared temporarily and the multiplex clock signal Cb, the sampling pulse C2 and the section identification signal C1 are supplied. Since the digital signal is arranged and outputted as shown in fig. (g) by the signals above mentioned, the transmission line is used effectively. |
