SU572938A1 - Time-dividing channeling apparatus - Google Patents

Description

the selection II tsl G clock frequency and to the first in-run receiver 7 synchronization signals, the generating unit 8, the first input of which is connected to the output of the G selector frequency clock, the second input - to the output of the receiver 7 synchronization signals, and one of the outputs of the generating unit 8 connected to the second input of the receiver 7 of the synchronization signals and the first input of the separation unit 9. In addition, the device on the transmitting side 1 of the first converter 10 of the group signal, the first input of which is connected to the output of the combining unit 3, the second input of the first converter 10 of the group signal - with the output of the synchronization signal generator 2, and the third input is supplied with clock pulses The device contains the second converter 11 of the group sigpal, the first input of which is connected to the output of the regenerator 5, the second input is connected to another output of the generator unit 8, and the output of the second converter And g The main signal is connected to the second input of separation unit 9, each group signal converter 6 consisting of successively connected control unit 12 (13) and variable length offset register 14 (15), whose inputs are the corresponding inputs of group signal converters 10 and 11, and the outputs of these converters are the outputs of the variable length shift registers 14 and 15.

The device works as follows.

The first transducer 10, mounted on the transmitting side 1, transfers the sync pulses to the beginning of the cycle, and the information pulses of the various channels oi are arranged in order of the remaining cycle time positions. At the beginning of the cycle, with the help of the sync generator 2 and the shift register 14, a lumped sync signal is generated, which has n bits. Then, information pulses are transmitted, delayed in shift register 14, the length of which is changed by means of control unit 12. The latter determines the length of the shift register 14 by one bit at the time of arrival at its input of each pulse corresponding to the position of the clock in the original group signal.

At the beginning of the cycle, the delay of the information pulses is maximum and is equal to the n − 1 cycle of the group signal. At the end of the cycle after the n-th clock pulse, information pulses are fed to the output of the shift register 14 without delay.

On the receiving side 4, a group signal with a center sync signal is fed to the receiver input 7, which with the help of the selector 6 and the generator unit 8 establishes synchronization over cycles. Thereafter, in the second converter 11, to ensure correct separation of the channels by the separation unit 9, the group signal is subjected to conversion, the reverse current that was produced on the incoming side 1. The regenerated group signal is fed to the input of the shift register 15, the length of which is changed by the control unit 13. At his entrance

Generator flare 8 is pulsed, corresponding to 1, the positions of the sync signal in the non-transducer group signal. At the beginning of the cycle, the delay of the information pulses is zero, after each pulse

and, at the input of the control unit 13, the delay increases by one clock step, reaching a value equal to the n-1 clock of the group signal by the end of the cycle. At the moments of change in the delay at the output of the shift register 15, there are emulsions, duplicated, previous information, however, they are also excluded from block 9.

Conversion of the group signal reduces the time to synchronization by cycles at the receiving side 4, since the most promising clock signal receiver with next search and multi-digit shift can be applied to the signal. In addition, with the conversion of the group signal, you can increase the cycle length (reduce their frequency).

Claims (2)

1. A device for temporarily sealing the channels, which contains a clock generator and a combining unit on the transmitting side, and a regenerator on the receiving side, the output of which is connected to the input of the clock frequency selector and to the first input of the receiver of synchronization signals, a heptation block whose first input is connected to the output of the clock frequency selector, the second input is connected to the output of the receiver of synchronization signals, and one of the outputs of the generator block is connected to the second input of the receiver of signals synchronization and the first input of the separation unit, characterized By the fact that, in order to reduce the time of synchronization on the cycle when compacting uniform information sequences, the first group signal transducer is introduced on the transmitting side, the first the input of which is connected to the output of the combining unit, the second input of the first group signal converter is connected to the output of the sync signal generator, and the third input is supplied with clock pulses, and the second group signal converter is input at the receiving side, the first input of which is connected to the regenerator output, the second input is connected to another the output of the generator unit, and the output of the second baseband converter is connected to the second input of the separation unit. 2. The device according to claim 1, wherein each of the group signal transducers consists of a series-connected control unit and a variable length shift register, whose inputs are the corresponding inputs of the group signal converter, the output of which is the output of the variable length shift register. Sources of information taken into account in the examination I. Gurevich V.E. and others. Pulse-code modulation in multichannel telephone communications, M., “Link, 1973.