SU1042198A1 - Regenerator of pulse signals of multichannel communication system - Google Patents

Abstract

EGENERATOR PULSE SIGNALS MULTI-CHANNEL COMMUNICATION SYSTEM. The contents of the N channels, each of which consists of AND elements and an amplifier, the output of which is connected to the first input of the element And is the output of the regenerator, so that, in order to improve the accuracy by stabilizing the repetition period .signals, an additional OR element and a delay element, common for all channels, are introduced into each channel, and a pulse extender, the input and output of which are connected respectively to the output of the OR element and to the amplifier input, is entered into each channel, the first output of the AND element anal soegdanen inputs with corresponding elements ,. OR of all other channels, and the second output of the AND element of each channel is connected to the corresponding inputs of the AND elements of all other channels and. with the corresponding input of the additional element OR, the output of which I through the delay element is connected to the corresponding input of the element AND (L of each channel ..

Description

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This invention relates to communication technology and can be used in the construction of a duplex line multichannel communication system in television complexes containing distributed video recorders, video sound switches, digital projectors, digital mixers, and other video signal sources and consumers. A regenerator is known that contains receiving and transmitting parts, each of which is made in the form of successively connected input units, a selective filter, a limiter amplifier, a pulse gating unit, a gate imposition block, and a terminal unit, and in the receiving part of the regenerator a second amplifier output - the limiter is connected to the input of the selective filter, and the output of the gating pulse former is connected to the input of the terminal unit, while the output of the terminal unit is received the second part is connected to the input unit WMOs house the transmitting part and a transmitting part yield blo second input coupled to a second input of block overlapping strobe pulses on the input signal l. The disadvantage of the known regenerator is low speed and accuracy. The closest technical solution to the invention is a pulse signal regenerator of a multichannel communication system containing N channels, each of which consists of an OR element, the AND element and an amplifier whose output is connected to the first input of the AND element and is the output of the regenerator 2. However, this regenerator has no accuracy. The purpose of the invention is to increase the accuracy by stabilizing the period for topping pulsed signals. The goal is achieved by the fact that the regenerator of pulse signals of a multichannel communication system containing N channels, each of which consists of an OR element, an AND element and an amplifier whose output is connected to the first input of an AND element and is an output of the regenerator, is common to all channels. an additional OR element and a delay element, and a pulse expander is input into each channel, the input and output of which are connected respectively to the output of the OR element and to the amplifier input, the first output of the AND element of each channel is connected according to The current inputs of the OR elements of all other channels, and the second output of the AND element of each channel are connected to the corresponding inputs of the AND elements of all other channels and to the corresponding input of the additional OR element, the output of which through the delay element is connected to the corresponding input of the AND element of each channel. The drawing shows a structural electrical circuit of the proposed regenerator. The regenerator of pulse signals of a multichannel communication system contains M channels 1-1 - 1 - W, each of which consists of the element OR 2, the element AND 3, the pulse expander 4 and the amplifier 5, as well as the common element for all channels, the additional element OR b and the delay element 7. The regenerator works as follows. . In the initial state, when no pulsed signals are sent to the regenerator, the output signals of the attenuators 5 of all channels 1-1 to 1-N are zero. At this moment, the signal O comes from the outputs of all amplifiers to the communication line and to the inputs of the elements AND of all channels 1-1 - 1 - W, the inverse outputs of which will have signals 1. These signals are combined by an additional element OR b and through the delay element 7 arrive at the inputs of elements AND of all channels, on the other inputs of which signals 1 are present and they are ready to receive pulsed signals. Let pulsed signals of positive polarity come to the input of the first channel 1-1 Reversely biased transistors of amplifier 5 of the first channel prevent Cozy signal passing to the pulse expander 4 of this channel and the OR 2 element, which only work in the opposite direction. The same signal, which came to the input of the AND 3 element of the first channel 1-1, comes from its direct output to the OR elements 2 Other channels. The pulse signals are expanded to a predetermined duration by the pulse expander of these 4 channels, and then the pulse signals with a predetermined duration are amplified by amplifiers 5 and are fed to the corresponding segments of the communication line. The same signals are fed to the inputs of the elements And the same channels. Since the other inputs of these elements and act-. From the inverse output of the And 3 element of the first channel are blocking signals O, then the signals cannot return to the first channel on the reverse channel. The inverted signal comes from the inverse output of the element AND 3 of the first channel 1-1 and also to the input of the additional element OR 6. Through the delay element 7, this signal is fed to another input of this element OZ. There is a selection of the leading edges of pulsed signals with a constant duration that trigger the pulse extenders of other channels. After passing the burst of pulse signals received on the first channel, it is possible to pass signals from any other Input through the pulse regenerator. The process of restoring pulse signals to other channels is completely analogous to the consideration one. Using the proposed pulse signal generator of multichannel systems in television complexes allows you to build a single-wire duplex multi-channel communication system (video recorders, digital mixers ... a) for control, signaling, control, dispatch communication, etc. A single-wire duplex multi-channel communication system several times reduces cable

the communication network provides the possibility of a simple extension of the technical equipment of the telecentre and modification of its structure. Improving the speed and accuracy of the regenerator allows an increase in the number of time channels of the telecentre communication system and increase the reliability of television equipment. To implement the device does not require the development of special circuits. The absence of the need for tuning and the low cost of the proposed regenerator of pulsed multichannel signals, the communication systems make it possible to use it in television complexes of various personal scales with technical and technological efficiency. The cost of industrial production of the proposed regenerator is doubling compared with the production

0 known regenerators.

Claims (1)

(54) PULSE SIGNAL REGULATOR OF A MULTI-CHANNEL COMMUNICATION SYSTEM, containing N channels, each of which consists of an AND element and an amplifier, the output of which is connected to the first input of the And element and is the output of the regenerator, which is connected with that, in order to increase accuracy by stabilizing the repetition period of pulse signals, an additional OR element and a delay element common to all channels are introduced into it, and a pulse expander is introduced into each channel, the input and output of which are connected respectively to the output of the element OR with the input of the amplifier, the first output of the AND element of each channel being connected to the corresponding inputs of the elements. OR of all other channels, and the second output of the AND element of each channel is connected to the corresponding inputs of the AND elements of all other channels and to the corresponding input of the additional OR element, the output of which through the delay element is connected to the corresponding input of the AND element of each channel.