SU769753A1 - Synchronization device - Google Patents

Description

The invention relates to telecommunications and can be used to transmit discrete messages.

A synchronization device is known comprising four correlators, the outputs of which are connected in pairs through the respective first and second adders to the inputs of the master oscillator, whose outputs are respectively connected to the inputs of the first and third correlators directly, and the second and fourth correlators through the first and second inverters, The input signal is fed to the other inputs of the first and fourth correlators directly, and the second and third correlators through the third inverter, the output of which through the first fferentsiruyuschy unit is connected to the third input of the oscillator, the third input of which via a second differentiator connected to the input 1 of the third inverter.

However, the known device has a narrow capture band.

The aim of the invention is to expand and capture bands.

For this, in the known synchronization device, the master oscillator is made in the form of sequentially connected the first one-oscillator, the first regenerator, the second one-oscillator and the second regenerator, the output of which is connected to the input of the first one-oscillator, and the inputs and outputs of the one-oscillators are respectively

5 generator.

FIG. 1 shows the structural electrical circuit of the proposed device; in fig. 2 - signal plots explaining his work.

10 The synchronization device contains four correlators 1, 2, 3, 4, the first and second adders 5 and 6, the master oscillator 7, consisting of two single vibrators 7-1, 7-2 and two regenerators 7-3, 7-4, than the inputs and outputs of the single inverters 7-1, 7-2 are respectively the inputs and outputs of the master oscillator 7, three inverters 8, 9, 10 and two differentiating blocks 11 and 12. Each accumulator

20 5 (6) contains, respectively, integrating elements 5-1, 5-2 (6-1, 6-2) with memory and differential element 5-3 (6-3). The device also contains a bus 13 "resolution - ban, bus 14

25 "prohibition - resolution and bus 15" memory dump.

The device works as follows.

Input sync packets to

30, in the form of points (Fig. 2a), they are fed odnoveremino to the inverter 10, to the input of the differentiating unit 12, to the inputs of the correlators 1, 4. The output nmnulses of the differentiating unit 12 (Fig. 26) are fed into the one-shot 7-1. The output pulses of the one-shot 7-1 (Fig. 2c) are connected to the input of the regenerator 7-3, to the input of the inverter 8 and to the other input of the correlator 1, which operates at a pulse duration (Fig. 2c) formed by the odiovibrator 7-1, shorter current parcels. The output differential sigal correlator of torus 1 (Fig. 2d) is fed to the information input of the integrating element 5-1. From the output of the integrating element 5-1, the signal (FNG. 2e) is fed to the first input of the differential element 5-3, the reduced voltage (Fig. 2e) from which is fed to the control input of the one-shot 7-1, resulting in the pulse duration one-shot 7-1, increased (Fig. 2c, time t3). The correlator 2 operates at the duration of the generated pulses, the greater the duration of the current parcels; Inverted input parcels (Fig. 2g) are fed to one input, and inverted impulses from the output of a single vibrator 7-1 (Fig. 2i) are fed to another input. The differential signal from the output of the correlator of torus 2 (Fig. 2k, moments 15, 16) is fed to the input of the integrating element 5-2, the output of which (Fig. 2l, time t6) is fed to the second input of the differential element 5-3, which is increased The input voltage of the latter (Fig. 2e, time 16) causes a decrease in the duration of the pulses generated by the single vibrator 7-1.

The output impulses of the differentiating unit 11 (Fig. 2m) trigger the one-shot 7-2.

The output pulses from the one-shot 7-2 (Fig. 2n) are fed to the input of the regenerator 7-4, the input of the inverter 9 and one input of the correlator 3, to the other input which do not receive the inverted input packages (Fig. 2g). The correlator 3 functions when the pulse duration generated by the single vibrator 7-2 is shorter than the duration of the current-free input parcels. The correlator 4. Functions when the duration of the single-pulse 7-2 pulses is longer than the current-free sending.

. The output difference signal from the correlator 3 (Fig. 2o) is fed to the input of the integrating element 6-1, from the output of which the spring (Fig. 2p) is fed to the nerve input of the differential element 6-3, the output voltage of the latter (Fig. 2p) to the input of the one-shot 7-2. One input of the correlator 4 receives the input parcels (Fig. 2a), to the other input - through the inverter 9 pulses (Fig. 2c)

course of one-shot 7-2. The difference signal (Fig. 2m) from the correlator 4 arrives at the integrator "1 element 6-2, the output signal of which (Fig. 2y) goes to the second input of the differential element 6-3.

After the end of the input sync packets, the signal "resolution from strip 14 to the inhibit inputs

regenerators 7-3 and 7-4, while the output pulse of the regenerator 7-3 starts the odiovibrator 7-2, the latter through the regenerator 7-4 starts the one-shot 7-1, thus the one-shot 7-1,

7-2 from the initial standby mode is transferred to the autogeneration mode of the alternate functionalization, with a single pulse sequence being formed from the two sequences. The prohibition signal from the bus 13 is applied to the interlocking inputs of the differentiating units 11 and 12 and to the inhibiting inputs of the correlators 1, 2, 3, 4.

After the end of receiving information from

15, a memory reset signal is supplied to the integrating elements 5-1, 5-2, 6-1 and 6-2, thus preparing the device to receive the following information from another source.

The proposed device makes it possible to eliminate periodic adjustments to the frequencies of the transmitting oscillator and substantially expand the capture band.

Claims (1)

1. Martynov EM. Synchronization in systems for the transmission of discrete messages. L1., “Holy, 1972, p. 55-56 (prototype). Vmd 12 ur / -J idi-P / 5