SU504298A1 - Pulse shaper - Google Patents

Description

one

The invention relates to a pulse technique and can be used, for example, in the input devices of computing machines,

Iavesten pulse shaper, containing a trigger, -, the element is And, the first input of which is connected to the input bus, the element is NOT, the input of which is: connected to the bus of clock pulses,

In a known former, the output pulses are controlled in duration. However, the duration of the generated pulses is not equal to the period of operation of the clock generator, which makes it difficult in some cases to synchronize them.

The purpose of the invention is to obtain a synchronized sequence of pulses from an unsynchronized sequence of signals, the duration of which is equal to the period of operation of the clock of the generator, which allows us to expand the field of application of the form 1 "l.

This is achieved by the fact that the shaper contains additional tripers, one "stroke lepeor-o additional trigger under2

| is key to the element output, apyroii to the element input is NOT, the output is to one of the second additional transponder, the other | GO input of which is connected to the output of the element NOT, and the second to the first input of the trigger, the second input which is connected: To the INPUT 1 line, and the output - to the second input of the element AND,

1 The drawing shows a diagram of the shape of a pulse wave,

1 The pulse shaper contains the element And 1, two additional triggers 2 | and 3, the element 4 and the trigger 5. i The first input of the element I 1 and Wto and the input of the trigger 5 are connected to the input bus 6, and the output to one of the trigger inputs (Hera 2, the other input of which and the input of the NOT 4 are connected to the bus of clock pulses 7, One input of the trigger 3 is connected to the output of the trigger 2, the other to the output of the element HE 4, the first output to the first input of the trigger 5, the second the output is to the output bus 8. The installation inputs trng e: ditch 2 and 3 B the initial position is connected to the c6pOf bus; a 9

The pulse former operates in the following manner.

In the initial state, the circuit is established by applying a low potential across the fault bus 9. In this case, the triggers 2, 3, 5 are set to the zero state.

In the event of a high potential on bus 6, through element I 1, the signal arrives at trigger input 2 and sets the flip-flop 2 into one state on the closest impulse received on bus 7 with high potential. At the next moment, the change in the potential 1 on the bus 7 is low on the terminal HE 4 and a high potential is formed, which enters the input of the trigger E and sets it to the state of unity. In this case, the second output of the trigger 3 forms the leading edge of the output pulse. With a low potential from the first output of the trigger 3, the trigger 5 is set to one, which by its low output potential changes the potential at the output of the And 1 element from high to low.

Next time, the potential change on bus 7 from low to high trigger 2 is set to the zero state, which is overwritten by trigger 3 when the next potential change on bus 7

on low. At the same time, at the second output of the trigger 3, the trailing edge of the output pulse is generated, synchronized with the generator clock frequency and in duration

equal to the period of its impulses. In this state, the former is before the potential of the tire 6 is low. When a low potential appears on the bus, trigger 5 is set to zero.

state, allowing reception of the next signal.

Claims (1)

Invention Formula A pulse shaper containing a trigger, an AND element, the first input of which is connected to the input bus, an NOT element whose input is connected to a clock pulse bus, characterized in that it contains additional triggers, one input of the first The additional trigger is connected to the output of the element AND, the other to the input of the element NOT, the output to one input of the second additional trigger, another input which is connected to the output of the element and the output is connected to the first input of the trigger, the second input is connected to the input bus, and the output to the second input of the element I.