RU2013858C1 - Pulse regenerating unit - Google Patents

Abstract

FIELD: pulse engineering. SUBSTANCE: unit has divider, which has variable division factor, two AND gates, pulse counter, comparison unit, standard pulse formers. The latter has flip-flop, decoder, AND gate, pulse counter. EFFECT: improved efficiency of regeneration of distorted pulses. 1 dwg

Description

 The invention relates to a pulse technique and can be used in digital computing and in radio engineering to restore distorted pulses.

 A device for the regeneration of telegraph pulses containing a divider, element And, pulse shaper, counter, decoder and shaper of the reference pulses with the corresponding connections.

 A disadvantage of the device is its low functionality, since the device cannot eliminate such kind of distortion as signal splitting.

 The aim of the invention is to expand the functionality by eliminating distortion signals of the type of "crushing" of pulses.

 The drawing shows a functional electrical diagram of a device for the regeneration of pulses.

 The device comprises a divider 1 with a variable division ratio, the first 2 and second 3 AND elements, a counter 4, a comparison circuit 5, as well as a first 6 and a second 7 pulse shapers. The first driver 6 reference pulses made on the same principle as in the prototype. The second driver 7 of the reference pulses also contains a trigger 8, a decoder 9, an element 10 and a counter 11, but the information output of the driver 7 is the output of the decoder 9.

A device for regenerating pulses works as follows. In the initial state, counters 4, 11 and trigger 8 are reset. The input of the divider 1 with a variable division ratio receives clock pulses. The division coefficient of the divider 1 is selected so that the equality is observed:
f _t = (1 / t _e ) V, (1) where f _t is the frequency of clock pulses at the output of the divider 1, Hz;
t _e - the duration of the reference pulse, s;
V = 10 ⁿ - volume of counters 4 and 11; n = 1, 2, 3,. . . - a parameter that determines the accuracy of regeneration.

 Let information impulses, subject to any kind of distortion (crushing or edge), come to the input of the device. At the same time, during the action of a unit potential, the And 2 element is open and clock pulses arrive at its output. By the first clock pulse from the output of the And 2 element, the trigger 8 of the shaper 7 is brought into a single state and filling of the counter 11 through the open And 10 element begins. At the same time, during the action of individual parcels at the input of the device (if the input pulse has a “crushing” type distortion), the calculation clock pulses by counter 4. As soon as counter 11 counts V pulses (and this time is equal to the duration of the reference pulse according to (1)), the decoder 9 is activated and the trigger 8 will transfer trigger 8 to zeros from its output state, will go to the input of element And 3 and to the input of zeroing the counter 4. If counter 4 counted the clock pulses more than the threshold value, the code of which affects the second input of the comparison circuit 5, then the element And 3 will be an open unit potential from the output "More "comparison circuit 5 and the pulse received at the first input of the AND 3 element will go to it and start the pulse shaper 6, which will form a reference pulse at the output of the device. Otherwise, the And 3 element will be closed and the formation of the reference pulse at the output of the device does not occur, that is, the pulse input is affected by the input of the device. The response threshold is set by the code at the input of the comparison circuit 5, and for a symmetric communication channel it is V / 2. The counter 4 is reset to zero by a slice of the pulse supplied to its input zero. Since the volume of the counter 11 is equal to V, then its zeroing occurs automatically after the time of formation of the reference pulse and additional external influences for its zeroing is not required.

 If the information continues to flow, then trigger 8 will be set to a single state and the operation of the device will be repeated. In this case, the formation of the reference pulse is carried out synchronously by the shapers 6 and 7. In the event that the current information package is also single, the shaper 6 will continue to generate a single pulse by the command received from the shaper 7, etc.

 The proposed device eliminates all kinds of distortions of the input signal, is invariant to impulse noise, and also allows you to work in communication channels with unequal transitions 1 - >> 0, and 0 - >> 1.

Claims (1)

 A device for regenerating pulses, comprising a pulse divider with a variable division ratio, the first input of which is connected to the clock bus, the second inputs are connected to the bus of the division coefficient code, and the output is connected to the first input of the first element And, the second input connected to the device information bus, and the first input of the first driver of the reference pulses, the output of the first element And is connected to the counting input of the pulse counter, the zeroing input of which is connected to the output of the second driver of the reference of pulses, the output of the first driver of the reference pulses is connected to the output bus, characterized in that a comparison unit and a second element And, the first input of which is connected to the output of the second driver of the reference pulses, the inputs connected respectively to the output of the pulse divider with a variable division factor and the output of the first element And, the second input of the second element And is connected to the output of the comparison unit, the inputs are connected respectively to the outputs of the pulse counter and bus control codes, and the output is from W eye input of the first reference pulse shaper.

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