SU1112543A1 - Device for delaying pulses - Google Patents

Abstract

IZHULS DETERMINATION DEVICE, containing a T-flip-flop, the first output of which is connected to the first input of the first AND element connected by the output to the input of the first RF-vibrator, the second one, which is introduced to expand its functionality pulse generator, element OR, second, third and fourth elements AND, while the device input is connected to the input of the pulse generator, the first output of which is connected to the input of the T-flip-flop, and the second output with the second inputs of the first and second The first element of the T-flip-flop is connected to the first input of the fourth And element, the second output of the T-flip-flop is connected to the first inputs of the second and third And elements, the second inputs of the third and fourth And elements are connected respectively to the outputs of the first and second single-oscillators, the input of the second single-oscillator W is connected to the output of the second element AND, the outputs of the third and fourth elements AND through the element OR are connected to the output § of the device.

Description

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.7 1 The invention relates to automation and pulse engineering. And can be used as a device for delaying a synchronized sequence of pulses in radio electronic and measuring equipment. A device for delaying rectangular pulses is known, comprising a pulse generator, a delay time register, a control divider, AND elements, EZ-flip-flops, a counter and a comparison element, the output of which is connected to the reset inputs of RS-flip-flops; its inputs are connected to binary outputs of the counter and controlled frequency divider, the driver of which is connected to the setup input of the second RS flip-flop, the output of the second is connected to the input of the reset and write element and is the output of the device 3-, However, this device cannot work in the case when the interval between the input pulses is less than the delay time, and relatively difficult. . The closest to the present invention is a time delay device-impulses containing two triggers, two delay elements (for example, one-shot), a HE element and an AND element, with the first inputs of the triggers connected to the device input the first outputs of the triggers and the HE element 11 to the inputs of the element I, the output of which is connected with the input of the first one-oscillator, and the output of the last with the output of the device and the second input of the second trigger, the second output of the first trigger through the second one-oscillator is connected to its second input and input lementa NOT 2J. However, the known device has narrow functionality, as it is intended to delay pulse-limited durations. The purpose of the invention is to expand the functionality due to the possibility of delaying the synchronized sequence and pulses of arbitrary duration for one clock period. This goal is achieved by the fact that a pulse holder containing a T-flip-flop, the first output of which is connected to the first input of the first AND element, connected by 3 2 output to the input of the first one-oscillator, the second one-vibrator, is inserted into the device, the pulse shaper, the OR element, the second, the third and fourth elements And, while the device input is connected to the input of the pulse former, the first output of which is connected to the input of the T-flip-flop, and the second output to the second inputs of the first and second elements of And, the first output of the T-flip-flop is connected to The first entry of the fourth. element I, the second transceiver of the T-flip-flop is connected to the first inputs 1 and 1 of the second and third elements And, the second inputs of the third and fourth elements And are connected respectively to the outputs of the first to the second one-vibrators, the input of the second one-vibrator is connected to the output of the second element And And through the element OR connected to the output of the device. Fig, 1 shows a functional diagram of the device; in fig. 2 - time diagrams that explain it. The device contains an input 1 of the device, the driver 2 pulses, the first 3 and second 4 outputs of the pulse generator, T-flip-flop 5, the first 6 and second 7 t-flip-flop 5, the first 8, second 9, the third 10 the last t1 elements And, - nepSEik 12, second 13 one-shot; element.or. 14, the inputs 15 and 16 of the OR element, the output 17 of the SHS element, which is the output of the device. Input 1 of the device is connected to the input of the imager 2 pulses, the first output 3 of which is connected to the input of the T-flip-flop 5, and its second output 4- is connected to the second inputs of the first 8 and second 9 elements And, the first output 6 of the flip-flop 5 is connected to the first inputs of the first 8 and fourth 11 elements And, and the second output 7 of the trigger 5 - with the first inputs of the second 9 and third 10 elements And, codes of the first 8 and second 9 elements And through the first 12 and second 13 one-shot ones are connected respectively to the second inputs of the third 10 and fourth 11 elements and whose outputs under They are connected respectively to the first 15 and second 16 inputs of the element. OR-14, output 17 of which in-. This is the output of the device. Pulses in the timing diagram. shown in sequence, corresponding to the functional diagram. In the system under consideration, the pulse front corresponds to the location of synchronization clock pulses, and the duration of the pulses can be any and is limited only by the synchronization period. The device works as follows. Pulses (. 2) arrive at input 1, the fronts of which correspond to the location of the clock pulses and the slices can take an arbitrary position in the clock period. The second pulse generator produces narrow pulses corresponding to the front and edge of the input pulses (Fig. 2t, outputs 3 and 4). The pulses from the output 3 of the generator arrive at the start of the counting T-flip-flop 5, the pulses at the outputs 6 and 7 of which control the operation of the elements 8 and 9. On the timing diagram, a case is taken when the appearance of the first pulse at the output 4 of the generator 2 pass only through element 8, since signal 1 from the output of 6 T-flip-flop 5 is applied to its input, and element 9 at this time is closed by signal O from output 7 of the T-flip-flop 5, therefore the first pulse at output 4 of the imager starts the one-shot 12, with the duration of the pulse of the one-shot 12 being selected period of clock pulses. A one-shot pulse 12, corresponding to a logic level 1, is connected to one of the inputs of the element 10, the second input of which is connected to the output 7 of the T flip-flop, where signal 1 is set during the arrival of a clock pulse following the one-shot trigger of the one-shot 12. At the output of the element And 10, a signal is generated, i / which corresponds to the coincidence time of the pulses (output 7, output of the single-selector 12 of Fig. 2). In the presence of a second pulse at the output 4 of the imager T-flip-flop 5 locks the element And 8 and unlocks the element And 9, so this pulse triggers the one-shot 13, which is identical in scheme and parameters to the one-shot 12. When the pulses of this one-shot coincide and at output 6 T- the trigger 5 at the output of the element 11 is formed a pulse that corresponds to the second input pulse delayed by one clock. As can be seen from the functional diagram, the device contains two channels that operate after one clock cycle, but the subsequent combination of channels through the OR element allows to receive at the output a sequence of pulses that are identical to the input sequence, but shifted by one clock period, and in this case the operation of the device not critical to the duration of the input pulses, the device circuit is relatively simple and access is easily realized by microelectronics.

Claims (1)

PULSE DELAY DEVICE, comprising a T-flip-flop, the first output of which is connected to the first input of the first AND element, connected by the output to the input of the first one-shot, the second is a one-shot, so that, in order to expand its functional capabilities, a pulse shaper, an OR element, a second, third and fourth AND element are introduced into the device, while the input of the device is connected to the input of the pulse shaper, the first output of which is connected to the input of the T-trigger, and the second output with the second inputs of the first and second element И, the first output of the T-trigger is connected to the first input of the fourth element And, the second output of the T-trigger is connected to the first inputs of the second and third elements And, the second inputs of the third and fourth elements And are connected respectively to the outputs of the first and second single vibrators, § input the second one-shot is connected to the output of the second element And, the outputs of the third and fourth elements And through the OR element are connected to the output · of the device. FIG. 7 SU „„ 1112543>