SU1338039A2 - Signal=pair selector - Google Patents

Abstract

The invention extends the functionality of the selector. The device contains a shaper 1 pulses of the reference duration, shapers 2 and 3 of the falling front and strobe pulse, respectively, elements AND 5, 9 and 15, shaper 6 of the falling front, block 7 of the switching, RS trigger 13, element OR 14. Introduction RS -trigger 10, inverter 11, selector 12 pulses and element And 16 provides for the selection of pairs of pulses with a given pause between the pulses of the pair. 2 Il. (L L-Q4 00 co oo o co with N

Description

The invention relates to a pulse technique and is an improvement of the basic invention according to the author. No. 905997

The purpose of the invention is to expand the functionality by ensuring the selection of pairs of pulses with a given pause between the pulses of a pair.

FIG. 1 shows a functional block diagram of the pulse pair selector; in fig. 2 - time diagrams of his work.

The pulse pair selector contains the driver 1 pulses of the reference duration and the first forcing device 2 of the falling edge, the inputs of which are connected to the input bus 3. The output of the driver 2 through the driver 4 of the gate pulse is connected to the reset input of the driver 1, and the first input of the first element And 5 is connected through the second shaper front 6, with the output of shaper 1, and the second input - with the output of shaper 2 and the first input of the switching unit 7, the second input of which is connected to the output of the element And 5, and the third input with the reset bus 8. The first reset output ZO corresponding to the falling edge of the input block 7 switching is connected to the first input of the second element And 9 and the R-input of the additional RS-flip-flop 10, S-input of which. An inverter 11 connected in series with an inverter 11 and a selector 12 of pulses of a given duration are connected to the input bus 3. The second input of the AND 9 element is connected to the direct output of the first RS flip-flop 13, the R-input of which is connected to the output of the AND 9 element, and S - input - with the second output of block 7 and the first input of the element OR 14, the second input of which is connected to the output of the third element I 15, the first input of which is connected to the direct output of the trigger 13, and the second to the direct output of the block 7. And the trigger output 10 and the output of the element OR 14 are connected to the corresponding the inputs of the additional element I 16, the output of which is connected to the output bus 17.

The switching unit 7 contains the fourth 18, fifth 19 and sixth 20 elements AND, an additional element OR 21 and the second RS flip-flop 22. Moreover, the first input of block 7 is connected to the first input of the element OR 21, the second input of which is connected to the third input

block 7, and BI.IXOA - with the first input of block 7 n the first input of the element 20, the second input of which is connected to the inverse output of the K8 trigger.a 22 and the first input of the element 19, the second input of which is connected to the second input of the block 7 and the first input element And 18, the second input of which is connected to

the direct output of the RS flip-flop 22, and the output with the R-input of the RS-flip-flop 22 and the third output of block 7, the S-input of the RS flip-flop 21 is connected to the output of the element 20, and the second output of block 7

connected to the output element And 19. The device operates as follows.

Previously, a pulse is applied to the reset bus 3, driving the circuit into

initial state (see fig. 2).

Each of the pulses of the input sequence with a leading edge triggers a driver 1, which generates a pulse of a reference duration. This pulse is applied to the driver 6, which generates a signal corresponding to the falling edge of the pulse of the reference duration, and the driver 2 generates a signal.

five

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pulse. With the simultaneous action of these signals, the element And 5 forms a selection pulse, which indicates the arrival of a pulse of a given duration. The selection pulse is applied to the inputs of the elements 18 and 19. Through the opening of the element 18 and the selection pulse enters the trigger 22 and transfers it.

The selector 12 through the inverter 11 receives a pulse corresponding to the pause between pulses. Two cases are possible when the pause between pulses corresponds to the reference duration and when it does not. In the first case, the selector 12 generates a pause selection pulse between and myles, which flips trigger 10, while element 16 opens. In the second case, a pulse pause selection pulse is not formed and element 10 remains closed, blocking the passage of the selection pulse at B1) Code bus 17

The bus 3 selector 3 receives the second input pulse. Two cases are possible when the duration of the second pulse coincides with the reference duration and when the duration of the second pulse does not coincide with the reference duration.

In the case when the duration of the second pulse coincides with the reference duration, the signals corresponding to the leading edges of the indicated pulses simultaneously arrive at the element And 5, and the element 5 also receives the selection pulse. This pulse arrives at the inputs of elements AND 18 and 19, through the element AND 19 opened in MOMBFIT and fed to the second input of element AND 16 through the element OR 14. If the pause between the pulses of a pair is equal to the specified g specified. In all other cases

the driver 1 of the pulses of the reference duration is already at rest at that moment, and the reset signal does not change its state. As a result of the reset, the pulse of the reference duration is not fully completed, and the selector is ready to interrogate the next pulse.

Noah, then element 16 opens and a selection pulse of the second input pulse is fed through it to the output selector bus. A selection pulse of the second input pulse is simultaneously supplied to the input of the RS flip-flop 13 and flips it. In this case, the element AND 15 is opened and, irrespective of the duration of the second input pulse, a short pulse from the former 2 through the element OR 21 and the element 20 also switches the RS flip-flop 22. At the same time, the element 19 again opens. The selector returns to the original state and turns out to be ready to receive the third input pulse. When the input pulse arrives with a reference duration, element And 5 emits a selection pulse, which enters the inputs of elements And 18 and 19, and through the elements 18 and 15 currently open, is fed to the input of element 16. And by this time, the second pause between pulses has been selected. And element 16 is opened by a signal transmitted by the selection pulse by a pause between the pulses of the trigger 10 and the selection pulse of the third input pulse is fed to the output selector bus. In case of a mismatch

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Claims (1)

Invention Formula Selector pairs of pulses auth.St. No. 905997, about tl and h and yu p; and with the fact that, with the goal;) to realize the functionality by ensuring the selection of pairs of pulses with a given pause between the pulses of a pair, an additional RS-trigger, an impulse selector of a predetermined duration, and an additional AND element are introduced into it, S An additional RS trigger through a series-connected pulse separator of a given duration and an inverter is connected to the input bus, the R input is connected to the first reset output of the switching unit, a direct output to the first input of the additional element And, second Its input is connected to the output of the RSHI element, and the output is connected to the output bus. the duration of the third input pulse from the reference selection pulse is generated, and the short and mic from the imaging unit 2 through the OR element 21, the AND 9 element is reset by the trigger 13, closing the AND 15 element. In this case, the trigger 16 is also reset and the 16 element is closed. The strobe pulse shaper 6 is designed to force reset the shaper 1 and a card of reference duration in the case when the duration of the input pulse is less than Invention Formula Selector pairs of pulses auth.St. No. 905997, about tl and h and yu p; and with the fact that, with the goal;) to realize the functionality by ensuring the selection of pairs of pulses with a given pause between the pulses of a pair, an additional RS-flip-flop, a pulse selector of a predetermined duration and an additional element I are inserted into it, and S- the additional RS-trigger input is through a series-connected pulse separator of a given duration and the inverter is connected to the input bus, the R input is connected to the first reset output of the switching unit, the direct output is connected to the first input of the additional element And, W swarm input of which is connected to the output rsi element, and output - with output bus. 1 Editor N. Kishtulinets Order 4144/55 Compiled by A. Sazonov Tehred M. Khodanich Proofreader S. Shekmar Circulation 901 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 Subscription