SU1522394A1 - Selector of pulses by duration - Google Patents

Abstract

The invention relates to a pulse and computing technique and can be used in information processing devices represented by pulse sequences with informative parameters enclosed in a pulse width. The selector contains a generator 1 clock pulses, elements And 2-5, counters 6 and 7 pulses, block 8 comparison codes, driver 9 of the falling edge of the pulse, trigger 10, delay element 11, element OR 12, input bus 13, control bus 14, bus 15 reset, the output bus 16 and 17. Ensuring the possibility of selecting a pair of pulses, the total duration of which is equal to a given threshold, allows you to expand the functionality of the device. 2 Il.

Description

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The invention relates to a pulse and computing technique and could be used in information processing devices represented by impersonal sequences with informative parameters enclosed in a pulse duration.

The purpose of the invention is to expand the functionality by allowing the selection of a pair of impulses, the total duration of which is equal to a given threshold.

Figure 1 shows the structural electrical circuit of the device; 2 shows timing diagrams for his work.

The device / figure 1) contains a generator of 1 clock pulses, the output of which is connected to the first inputs of the first and: the second elements And 2 and 3, the third and fourth elements And 4 and 5 The outputs of the elements 2 and 3 are connected to the counting inputs of the first and second counters 6 and 7 pulses, the outputs of the 6-bit counter are connected to the inputs of the first group of inputs of the code comparison unit 8, the inputs of the second group of inputs of which are bitwise connected to the outputs of the counter 7. The second input of the And 2 element is connected to the input of the back of the pulse former and With the entrance trigger ra 10. The output of block 8 is connected to the input of the I I delay element. The R input of the trigger 10 is connected to the reset input of the counter 6 and the output of the element OR 12. The second input of the element AND 2 is connected with the input bus 13, insert the input of the element AND 3 with the control bus 14. The reset input of the counter 7 is connected to the reset pin 15 and the first input of the element OR 1 .. The outputs of elements AND 4 and 5 are connected respectively to the first and second output buses 16 and 17. .. The output of block 8 is connected to the first input of the element 4, the second input of which connected to the output of the imaging unit 9, and the third input to the direct output of the trigger 10, the inverted output of which is connected to the first input of the element And 5, the second input of which is connected to. the output of the block 8 and the third input - with the output of the imager 9. The output of the delay element 11 is connected to the second input of the element ShZh 12,

Pulse selector in duration works in a controlled manner.

In advance, a pulse is supplied to the reset bus 15, setting counters 6 and 7 to the zero state. Then from the control bus 14 to the second input of the element I 3 enters

ten

15

20

25

thirty

40

45

50

impulse, duration 6

zchd

whom

equal to the required selection threshold and for the duration of which the clock pulses of the generator I pass to the counting input of counter 7. As a result, the counter 7 counts the number of pulses arriving at its counting input, and a number code is recorded in it that is proportional to the control pulse duration . After setting the required value of the selection threshold, the selector is ready to receive input pulses.

The input pulse from the pulse impulse arrives at the second input of the element I 2 and at the C input of the trigger 10. In this case, the trigger 10 is cocked and the resolving potential starts to flow to the third input of the element 4. During the duration of the input pulse (FIG. 2 a, pos, I, and), the clock pulses of the generator 1 are passed to the counting input of counter 6. Counter 6 counts the number of pulses coming to its counting input and. it records a code for a number, which is proportional to the duration of the input pulse. At the same time

35, a strobe pulse of the trailing edge of the input pulse is formed by the shaper 9 (Fig. 2d, pos. 1, II), which is supplied to the second and third inputs of the And 4 and 5 elements respectively.

If the input pulse is equal in duration to the required selection threshold, then the number codes recorded in counters 6 and 7 coincide and the code comparison unit 8 outputs a pulse (FIG. 2, d, pos. 1), which is fed to the first and second inputs respectively of the elements And 4 and 5. With simultaneous impact of the signals at the inputs of the elements And 4 and 5 from the outputs of the imaging unit 9 and block 8 and in the presence of a resolving potential at the third input of the element I 4 (Fig.2 b, d, d, position X), on element output 4

55, a selection signal is generated (Fig. 2 h, pos. I). Thus, at the output of the element 4, a selection signal is generated meaning that a pulse has arrived at the selector input, the duration of which is equal to the required selection threshold, i.e. given Simultaneously, the signal of the block 8 is fed to the input of the delay element 11, is delayed therein by the time required to complete the transient processes in the elements (Fig. 2 g, pos. T), and the trigger 10 is reset to the initial state through the element OR 12. and counter 6 ..

When the input impulse exceeds the required selection threshold, the selection signal is not output, because the pulses from the imaging unit 9 and the unit 8 affect the And 4 element non-simultaneously,

When entering the input selector

The comparison unit 8 will also coincide to emit a pulse (Fig. 2, d, pos., which enters the second input element of the And 5 unit. Simultaneously with e, the former 9 i forms the stationary impulse (Fig. 2, d, pos. Ill), which enters at the third entrance element And 5. At the same time

d signals on the third and second in and also in the presence of a resolution potential at the first input of the element And 5 (figure 2, c, pos. Ill), the last will give a selection signal (figure 2

5 pos. Iii)

At the same time, the signal of the code comparison unit via the turf element and the OR 12 element returns the trigger 10 and the counter 6 to the outcome

combinations of a pair of pulses, a long-20 state (Fig. 2, g, pos. III).

match and block 8 comparison of codes gives a pulse (figure 2, d, pos.), which is fed to the second input of the element And 5. At the same time, the driver 9 i forms a strobe - pulse - (Fig. 2, g, pos. Ill) which enters the third input element And 5. With simultaneous exposure

d signals at the third and second inputs, as well as in the presence of a resolving potential at the first input of the element And 5 (figure 2, c, pos. Ill), the latter will issue a selection signal (figure 2, e,)

5 pos. Iii)

At the same time, the signal of the code comparison unit 8 via the connotation element II and the OR element 12 returns the trigger 10 and the counter 6 to the original connection

which, in sum, are equal to the required selection threshold (FIG. 2, a, pos. Ill), C 6 calculates first the number of clock pulses arriving at its counting input during the duration of the first pulse of the pair. As a result, a number code proportional to the duration of the first pulse of the pair is recorded in counter 6. A trigger 10 is cocked from the leading edge of the first impulse of the pair, and at the moment of the end of the same pulse, a signal is generated by the shaper 9 (Fig. 2, g, pos. III). However, at the output of the element 4, the signal is not formed, since block 8 compare. CODES did not form a signal (figure 2, d, pos.ill). /,

When the second pulse of the combination arrives at the input, the last leading edge returns the trigger 10 to the initial state, and the permissive potential from the inverse output of the trigger 10 begins to act at the 6th input of the AND5 element.

During the duration of the second pulse of the pair to the counting input of the counter 6 receives the pulses of the generator 1, and. counter 6 continues to count the number of clock pulses that have fallen on its counting input.

Thus, in counter 6, a number code is recorded that is proportional to the sum of the durations of the combination of a pair of adjacent pulses. If the total duration of the combination of a pair of adjacent pulses is equal to the required selection threshold, then the codes of numbers recorded in counters 6 and 7,

five

0

five

0

five

0

five

If the sum of the durations of the combination of a pair of pulses of the larger threshold of the selection, then a selection signal at the output of the element 5 does not form, due to the non-simultaneous effect of the signals from the generator 9 and the comparison block 8 of the codes at the inputs of the element And 5 ..

Thus, the introduction of new elements and links into a known pulse selector can extend its functionality by duration. This makes it possible to obtain additional information in automatic information processing devices and in remote control systems.

Claims (1)

The invention selector pulse duration, containing a clock pulse generator, the output of which is connected to the first inputs of the first and second elements, And the second input of the first element And is connected to the input bus and the input of the back edge of the pulse, and the output with the counting input of the first pulse counter The outputs of which are bitwise connected to the inputs of the first group of inputs of the code comparison unit, the output of which is connected to the first input of the third element And, the second input of which is connected to the output of the forms Atele is the back of the pulse, and the output of the second element I is connected to the counting input of the second pulse counter, as well as the fourth element I, the first input of which is connected to the inverse output trigger. a delay element, a reset pitch, and the first output bus, which is designed to expand the functionality by allowing for the selection of a pair of pulses, the total duration of which is equal to a predetermined threshold, He introduced the control bus, the second output bus and the OR element, the first input of which is connected to the reset bus and the reset input of the second counter, pulses, the outputs of which are bitwise connected to the inputs of the second -group of inputs of the code comparison unit, the output of which is connected with the second input of the fourth element I and through the element of the triggering - with the second input of the OR element, the output of which is connected to the reset input of the first pulse counter and the R input of the trigger, the C input of which is connected to the input bus and the direct output to the third input the third element And the output which is connected to the first output bus, the third input of the fourth element I is connected to the output of the rear edge pulse Lorrier, the output to the second output bus, and the second input of the second element I connected to the control bus.