SU993456A1

SU993456A1 - Pulse synchronization device

Info

Publication number: SU993456A1
Application number: SU813283464A
Authority: SU
Inventors: Геннадий Петрович Митин; Александр Васильевич Шанин
Original assignee: Предприятие П/Я Г-4273
Priority date: 1981-05-04
Filing date: 1981-05-04
Publication date: 1983-01-30

Description

Изобретение относитс к импульсhoa технике и может быть использовано в цифровых устройствах различного назначени , в частности в устройствах преобразовани , обработки и передачи информации.The invention relates to a pulse technique and can be used in digital devices for various purposes, in particular in devices for converting, processing and transmitting information.

Известно устройство дл синхронизации импульсов,содержащее триггеры , элементы И и НЕ 1.A device for synchronizing pulses is known, which contains triggers, AND elements and NOT 1.

Данное устройство обеспечивает прив зку импульсов только с точностью периода тактовой частоты. .This device provides pulse sizing only with an accuracy of a clock frequency period. .

Наиболее близким к предлагаемой сущности вл етс устройство дл синхронизации импульсов, содержащее п ть D -триггеров и элемент ИЛИ t23.Closest to the proposed entity is a device for synchronizing pulses, containing five D-triggers and the element OR t23.

Такое устройство обеспечивает прив зку импульсов с точностью половины периода тактовой частоты, однако обладает невысокой надежностью за счет наличи эффекта гонок сигналов .Such a device provides pulse sig- nal with an accuracy of half the period of the clock frequency; however, it possesses a low reliability due to the presence of the effect of signal races.

Цель изобретени - .иовьлаение надежности устройства.The purpose of the invention is the development of the reliability of the device.

Эта цель достигаетс тем, что в устройство дл синхронизации импуль- сов, содержащее первый и второй триггеры, первые входы которых подключены к входной шине, вторые входа ..соединены с общей шиной, а.выходыThis goal is achieved by the fact that the device for synchronizing pulses, containing the first and second triggers, the first inputs of which are connected to the input bus, the second inputs are connected to the common bus, and the outputs

подключены к первым входам соответственно третьего и четвертого триггеров , вторые входы крторалх соединены соответственно с первой и -второй шинами тактовых импульсов, а выход третьего триггера через элемент ИЛИ подключен к выходной шине, дополнительно введены два элемента И и элемент ИЛИ, входы которого соедине10 ны с выходами элементов И, а выход подключен к третьему входу второго триггера, выход которого соединен с третьим входом третьего триггера, первый вход которого подключен к connected to the first inputs of the third and fourth triggers respectively, the second inputs of the crtorals are connected respectively to the first and second buses of clock pulses, and the output of the third trigger through the OR element is connected to the output bus, two additional elements AND and the elements OR whose inputs are connected to the outputs of the elements And, and the output is connected to the third input of the second trigger, the output of which is connected to the third input of the third trigger, the first input of which is connected to

15 третьему, входу четвертого триггера, выход которого соединен с другим . входом основного элемента ИЛИ, выход которого подключен к третьему входу первого триггера, при этом 15 third input of the fourth trigger, the output of which is connected to another. the input of the main element OR, the output of which is connected to the third input of the first trigger, while

20 первые входы элементов И соединены с выходами соответственно третьего и четвертого триггеров, а вторые входы подключены соответственно к второй и первой шинам тактовых им- 20, the first inputs of the And elements are connected to the outputs of the third and fourth triggers, respectively, and the second inputs are connected respectively to the second and first buses of clock

25 пульсов.25 pulses.

На чертеже приведена функциональ ,на схема устройства дл синхронизации импульсов.The drawing shows a functional diagram of a device for synchronizing pulses.

Claims

The device contains the first, second, third and fourth triggers 1-4, the main 5 and additional 6 elements OR, the elements 7 and 8, the first 9 and second 10 tires of the clock pulses, the input bus 11 and the output bus 12.. The device works as follows. In the initial state, trigger 1 is in the single position, triggers 2-4 in the zero position. Tires 9 and 10 receive forward and inverse clock pulses. The input pulse enters the bus 11, and with its leading edge sets trigger 1 to the zero position, and trigger 2 to the unit one. So ka: to the information on the triggers 3 and 4 comes from the inverse outputs of the triggers 1 and 2, then the triggers 3 and 4 are prepared to record a single code. If the input pulse arrives in the pause between clock pulses, then the leading edge of the clock pulse arriving via bus 9, trigger 2 is set to a single position and the unit potential through the element. OR 5 enters the output bus 12 and to one input of the And 8 element and translates trigger 1 in a single position. On the leading edge of the inverse clock pulse (i.e., on the trailing edge of the forward clock pulse), which enters the bus 10 through the openings of the AND 8 element and the OR 6 element, the trigger 3 is set to the zero position and pushes the potential from the inverse output of three ger 2 zero position. Further, the operation of the device continues similarly. When the input pulse (front edge) arrives, during the clock pulse the device will work as in the previous case, the HO output pulse will be generated by the trigger 4. The proposed device has a high reliability of operation, since it lacks the effect of signal races. In addition, the device does not require shifted clock pulses, and for normal operation it is only necessary to send direct and inverse tact impulses; which is much easier. The resolution of the proposed device is half the period of the clock frequency. Upon receipt of input pulses with an interval less than half the period of the clock frequency, a failure like a pulse loss is possible. The invention of the device for synchronizing pulses, containing the first and second triggers, the first inputs of which are connected to the input bus, the second inputs are connected to a common bus, and the outputs are connected to the first inputs of the third and fourth triggers, respectively, the second inputs of which are connected respectively to the first and second buses clock pulses, and the output of the third trigger through the OR element is connected to the output bus, characterized in that, in order to increase reliability, two AND elements and an IL element are additionally introduced into it And, whose inputs are connected to the outputs of the elements And, and the output is connected to the third input of the second trigger, the output of which is connected to the third input of the third trigger, the first input of which is connected to the third input of the fourth trigger, whose output is connected to another input of the main element OR, whose output connected to the third input of the first trigger, while the first inputs of the elements I are connected to the outputs of the third and fourth triggers, respectively, and the second inputs are connected respectively to the second and first buses of the clock Pulse. Sources of information taken into account during the examination 1. USSR author's certificate No. 606200, cl. H 03 K 5/13, 1976.

2. USSR author's certificate number 703900, cells: H 03 K 5/13, 1977.