SU1307547A1 - Pulse shaper - Google Patents

Abstract

The invention can be used in digital devices and communication technology. The purpose of the invention is to expand the functionality of the device. Pulse generator contains elements And 3, and 6, pulse counter 4, element AND-OR 7 and bus 1, 2, 8.9 and 10 clock pulses, Reset, output, mode and control signals, respectively. The introduction of the decoder 5 and the formation of new functional connections provide the formation of a burst of pulses with filling with pulse sequences of different duty cycle. In addition, the formation of continuous pulse sequences of various frequencies is ensured. 2 Il. S with about 1 ate 4; j

Description

The invention relates to a pulse technique and can be used in digital devices and communication technology.

The aim of the invention is to expand the functionality by ensuring the formation of a burst of pulses with filling with pulse sequences of different duty cycle, as well as the formation of continuous pulse sequences with different frequency.

: FIG. 1 shows the functional--: on the circuit of the pulse former; FIG. 2 - time diagrams of the shaper operation in each mode (diagrams are given for the decoder for 16 outputs).

The pulse generator contains 1 clock pulse bus, 2 Reset bus, element 3 AND, pulse counter 4, decoder 5, element 6 AND, element 7 AND-OR, output bus 8, mode bus 9, control signal bus 10.

Bus 1 is connected to the input element 3 And, another input of which is connected to the output of element 6 I, output - to the counting input of counter 4, the zero input of which is connected to bus 2, and outputs to the inputs of the decoder 5, the last output of which is connected to the input of the element 6 AND, the other input of which is connected to the bus 9, the remaining outputs of the decoder 5 are connected to the inputs of the element 7 AND-OR, the other inputs of which are connected to the bus 10 of control signals, and the output to the bus 8.

The pulse shaper operates as follows.

In the initial state on bus 2 A reset is present, the signal holding counter 4 in the zero state, which is decoded by the decoder 5. In the initial state, there is a signal at the zero output of the decoder 5, and there is no signal on the other outputs.

Consider the first mode - the formation of a single pulse of various durations. At the same time, on bus 2 Reset. There is a signal that unlocks counter 4, a mode select signal is present on mode bus 9, which opens AND 6 element. The duration of a single signal on output bus 8 is determined by a combination of control signals on buses 10. If necessary receiving at the output of the driver of a single signal of maximum duration on tires 10 there are control signals S ,,, ..., S. Clock pulses (Fig. 2a) through element 3 And go to counter 4. Counter state

4 (Fig. 2b) is decrypted by the decoder 5, at the outputs of which a signal circulates (Fig. 2c) arriving at the inputs of element 7 AND-OR. With the coincidence of the signal from the output of the decoder

5 with the appropriate manager

signal S,

, S at the output of the element 7 AND-OR and on the bus 8 of the driver appears the signal. When the signal at the last output of the decoder 5 coincides with the signal on the mode bus 9, the resolution at the input of element 3 for the passage of clock pulses disappears, the pulse at the output of the generator (Fig. 2d) ends. Further operation of the imager is possible after resetting the counter by 4 signals on the bus 2.

In order to form a shortened pulse, it is necessary to exclude the corresponding control signals on the buses 10. At the same time, the corresponding inputs of the AND-OR element 7 do not allow the signals to pass signals from the decoder 5 to the imaging bus 8 at certain time intervals. Thus, the absence of control signals S, S2 ...., Sjg, S on tires 10 makes it possible to form a single pulse, as shown in FIG. 2d, the presence of control signals S, ... 5 ST and the absence of control signals on other buses 10 makes it possible to form a single pulse, shown

in fig. 2nd. FIG. 2g depicts a single pulse generated using control signals Sg, ..., S c, in the absence of control signals

N BOW

Oh oh, ..., J

50 Thus, with the help of various combinations on tires 10, it is possible to form a single pulse of various duration.

For the formation of a single pack

55 pulses need to save the signal on the mode bus 9, and on the bus 10 to send the control signals necessary for the organization of the pulse sequence of the desired duty cycle.

At the same time, the absence of control signals on one or several buses 10 leads to the absence of resolving signals at the corresponding inputs of the AND-OR element 7, and, accordingly, to prohibit the passage of signals from certain outputs of the decoder 5 to the output bus 8 of the driver. Therefore, to form the burst, shown in FIG. 2, it is necessary to eliminate the signals Sj, 5c, S, S. In order to form the burst, shown in FIG. 2k, it is necessary to provide control signals S, Sj, Sj, S,

from about. 9 V-

In order to form continuous pulse sequences, the absence of a signal on bus 9 is required. At the same time, the input of element 3 also has a constant resolution on the frequency of clock pulses at the input of counter 4. Depending on the code combinations, it is possible to organize continuous pulse sequences of different frequencies on the tires 10, as shown in fig. 2n ..., 2n. In this case, the lack of a signal ya output bus 8 shaper

at certain time intervals, it is organized by the absence of control signals on the tires 10.

Claims (1)

Invention Formula The pulse shaper containing the first element And, one of the inputs of which is connected to the mode bus, the second element is And, one of the inputs of which is connected to the bus clock pulses, and the output is connected to the counting input of the counter. pulses, zero- whose input is connected to the bus The reset, as well as the AND-OR element, the first inputs of which are connected to the control signal bus and the output is connected to the output bus, and that, in order to extend the functionality, he entered the decoder, the inputs of which are connected to the outputs of the pulse counter, and the last output is connected to another input of the first element AND, the output of which is connected to another input of the second element AND, at the same time the other outputs of the decoder are connected to the second inputs of the I-IPI element. 7 JumannjTjimuiruirinnnjijm  -JnJTJnJ4JTJTJnjnJTJlJbri njl 2, jr li / u2-LT Lj U "Y. g Si.,. 0 Sf, 6, Sff, - fO f $ i ... Sr f JT MG Si ... LT LT u UT U /% Wtf tpapMupoCamut single x imp impers ., Sig-0, &, JW, St ,, Sy, S, 57.4, J St ... S.Sff, "5d, LJ-Ln  Pemuja / rormirobian single natmu J pulse I .. if .Y Jutl Editor A.Dolinich Compiled by V. Potapov Tehred M. Hodamich Proofreader L. Patay Order 1640 / 53Tsrazh 902Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5 Production and printing company, Uzhgorod, st. Project, 4