SU1172040A1 - Transmission device for intermediate station of digital communication line - Google Patents

Abstract

DEVICE COMMUNICATION intermediate station DIGITAL link comprising series-connected analog-to-digital converter, a unit combining the channels and the generator line signal block extracting clock frequency, receiver clock, and a clock generator which outputs are connected to respective second inputs of analog-to-digital, converter, block combining channels and a linear signal shaper, characterized in that, in order to simplify the device by excluding memory elements, it Eden delay unit, a first input of which is connected to the input device and inputs the clock extracting unit and the receiver clock, the outputs of which are connected to respective inputs of the clock generator, the output of which is connected to the second input of the delay unit, whose output is connected to the third input channel combining unit.

Description

Yu

The invention relates to communication technology, namely to digital transmission systems with time division multiplexing, and is intended for use in the equipment of intermediate stations of digital communication lines.

The aim of the invention is to simplify the device by eliminating memory elements.

- The drawing shows a block diagram of the transmission of an intermediate station of a digital communication line.

The device contains an analog-digital converter 1, a channel combining unit 2, a linear signal shaper 3, a delay unit 4, a clock frequency extracting unit 5, a clock signal receiver 6, a clock generator 7.

The transmission device of the intermediate station of the digital communication line operates as follows.

The group digital signal of the line allocated at the intermediate station is fed to the inputs of the block 4 delays, the block

5 clock selection and receiver

6 sync. Clock pulses at the output of the clock extracting unit 5

controlling the operation of the clock generator 7. In the receiver 6 of the sync signal, the sync signal is detected, and the control pulses from the output of the receiver 6 of the sync signals are set to the clock generator 7, after which the pulse sequences at the control outputs of the clock generator 7 ensure the operation of the analog-digital converter 1, block

2 channel combiners, 3 line wave imagers and 4 delays. At the output of the analog-digital converter 1, an intermediate station group signal appears, which lags behind the group signal of the line by the time needed to identify the clock signal and install the generator equipment. Full coincidence of the start time of the cycles of both signals is provided by the 4 delay unit.

Thus, the transmission device of the intermediate station of the digital communication line allows to establish a temporal correspondence between the group digital signal of the line and the signal produced by the intermediate station in cycles, cycles, and

also, if necessary, on superframes.

Claims (1)

A DIGITAL LINK INTERMEDIARY STATION TRANSMISSION DEVICE, comprising an analog-to-digital converter, a channel combining unit and a linear signal shaper, a clock allocation unit, a clock receiver and a clock generator, the outputs of which are connected to the corresponding second inputs of the analog-digital converter a channel combining unit and a linear signal shaper, characterized in that, in order to simplify the device by eliminating memory elements, it is introduced Delay lock, the first input of which is connected to the input device and the input allocation unit clock and receiver clock, which outputs a clock generator connected to respective inputs, the output of which is connected to the second input of the delay unit, whose output is connected to a third input of the combiner channels. >