SU930625A1

SU930625A1 - Pulse repetition period discriminator

Info

Publication number: SU930625A1
Application number: SU803004258A
Authority: SU
Inventors: Богдан Михайлович Бойчук; Юрий Анатольевич Кужелюк; Богдан Владимирович Осыка; Михаил Васильевич Рудань
Original assignee: Специальное Конструкторско-Технологическое Бюро Физико-Механического Института Ан Усср
Priority date: 1980-11-17
Filing date: 1980-11-17
Publication date: 1982-05-23

Description

1one

Изобретение относитс к импульсной технике и может быть использовано в технике св зи.,The invention relates to a pulse technique and can be used in communication technology.,

Известен селектор импульсов, преобразующий последовательность селектируемых импульсов в последовательность импульсов, длительность которых равна периоду входных импульсов, а затем осуществл ющий селекцию по длительности импульсов f .A pulse selector is known that converts a sequence of selectable pulses into a sequence of pulses, the duration of which is equal to the period of the input pulses, and then performing selection on the duration of the pulses f.

Недостатком этого устройства вл етс то обсто тельство, что при поступлении нечетного количества импульсов, оно вьшел ет последний импульс независимо от -периода его следовани .A disadvantage of this device is the fact that when an odd number of pulses arrive, it reaches the last pulse regardless of how long it follows.

Наиболее близок к изобретению селектор импульсов по периоду следовани , содержащий последовательно соединенные генератор тактовых импульсов, регистр, управл ющий триггер, выход которого соединен с блокирующим входом генератора тактовых импульсов, и одновибратор, вход которого подключен к входу селекl-opa , выход -к установочным входам регистра , управл ющего триггера к одному из входов элемента И, другой вход которого соединен с выходом регистра, а выход вл етс выходом селектора.Closest to the invention, the pulse selector for the following period, containing serially connected clock generator, a register that controls the trigger, the output of which is connected to the blocking input of the clock generator, and a one-shot, the input of which is connected to the input of the selector-opa, output to the installation inputs a register that controls the trigger to one of the inputs of the AND element, the other input of which is connected to the output of the register, and the output is the output of the selector.

Регистр может представл ть собой счетчик импульсов с дещифратором. Входной сигнал запускает.одновибратор, формиру1дщий импульсы, задним фронтом которых осуществл етс установка в ис10 ходное состо ние регистра н управл ющего триггера. После поступлени заданного числа импульсов тактового генератора на вход регистра, на его выходе формируетс импульс. При совпадении The register may be a pulse counter with a descrambler. The input signal triggers a single vibrator, which generates pulses, the falling edge of which is set in the initial state of the control trigger register. After a specified number of pulses of the clock generator arrives at the register input, a pulse is formed at its output. In case of coincidence

15 во времени этого импульса с следующим входным импульсом последний про(ходит на выход селектора 2 .15 in time of this pulse with the next input pulse last pro (goes to the output of the selector 2.

Claims

The drawback of the device is the low accuracy of the selection, depending on the pulse duration of the one-shot and changing with the change of the selection period. 39 Chain of the invention - improving the accuracy of the selection of pulses for the next period. The goal is achieved by the fact that the pulse selector by a follow-up period contains a one-shot connected between the device input bus and the control inputs of the control trigger and pulse counter, the counting input of which is connected to the output of the clock generator, and the outputs through the decoder are connected to the counting control input trigger trigger, the output of which is connected to the input of the clock pulse generator. are introduced .1К R trigger element OR, the first input of which is connected to the input bus of the device, output element OR is connected to the R--vxodylKR tpiGgepa, coupled to an output monostable, and I - and K inputs - yield Deshko Ator and the second input of the OR element. The output of the lKR flip-flop is the output bus of the device. FIG. 1 gfivedena structural diagram of the device; in fig. 2 - time diagrams that show his work. The pulse selector for the compression period contains an oscillator 1, a generator of 2 clock pulses, a counter of 3 pulses, a decoder 4, a control trigger 5, an OR element 6,1 KR-trigger 7, and the input bus 8 of the device is connected to the first input of the OR 6 element and an one-shot input 1, connected by its output to the counting input t K of the R-flip-flop 7, a setup input of the counter 3, and a setting input of the control trigger 5, the output of which is connected to the input of the clock 2, connected by its output to the counting input of the counter 3, Which are connected to the corresponding inputs of the decoder 4, connected by its output to the counting input of the control trigger 5, the second input of the element OR 6 and I - and K-inputs the LKR trigger 7, the R-input of which is connected to the output, the circuit OR 6, and The output of the device is the output bus of the device. The device works as follows. The input signal (Fig. 2a) triggers a one-shot 1, which generates pulses, the falling edge of which sets the initial state of the counter 3 and the control trigger 5 (Fig. 26V The counter 3 counts the incoming pulses to its input (Fig. 2-6) After a certain number of pulses are calculated by the counter 3, a pulse is formed on the code of the decoder 4 (FIG. 2d), which is received through the OR element b on the JR input, as well as on the first K inputs of the 1KR trigger 7 , gives permission to switch it. If this impulse coincides in about the time with the leading edge of the new input pulse, then the last one converted by the one-vibrator 1 switches the IKR trigger 7 to the state 1, and entering through the element OR 6 to the R-input IKR of the TRIGGER 7 (Fig. 2n) keeps it in this state After the end of the action of the input pulse, the trigger 7 is set to the state O and at its output, thus, a pulse is formed which coincides, in duration, with the input one (Fig. 2e). In the case when the pulse repetition period is less than the specified one, the output pulses of the one-shot 1 with its rear 4pcs units set the counter 3 to the initial state before it calculates a specified number of pulses and to the device input, the pulses do not pass. the front of the pulse generated by deShifratora 4 (Fig. 22), the control trigger 5 is set to the state O (Fig. 2g) and blocks the flow of clock pulses from the generator 2 to the counter 3. The subsequent input pulse to the output of the selector does not start, but triggers a one-shot that sets the counter 3 and the control trigger 5 to the initial state (Fig.

2. Thus, by changing the initial state of the counter, it is possible to change the time of the selection of pulses, not the Kemek at the same time, the accuracy of the selectivity. The output pulses of the selector coincide in time and in duration with the input. These circumstances make it possible to make wide use of the proposed pulse selector for the follow-up period / in communication systems, and to carry out an automatic selection of the follow-up period for selectable pulses. Claims of the pulse period selector, containing a one-shot connected between the device input bus and the control inputs of the control trigger and pulse counter, whose counting loop is connected to the output of the clock generator, and the outputs are connected through the counting input of the control trigger through the output clock generator, and the output of which is connected to the input of a clock pulse generator, characterized in that, in order to improve the accuracy of the selection over the following period, I, KR-iperrep and 9 t I / O, first th input is soe1.

j 56 dinen q input bus device, the output is POSSIBLE to, R - input 1KR -trigge a, whose input is connected to the code of omo viewer, and I о and K-input about the output of the decoder and the second vksdom element AND LI "Information Sources tye into account in the examination 1.Avtorskoe certificate of the USSR № 669665, cl. N OZ K 5/153, 1979. 2. USSR author's certificate N 6742О9, cl. N OZ K 5/153, 1979 (prototype) ..