SU780217A1 - Device for dynamic monitoring of reception of single-polar code pulses in system with active zero - Google Patents

Description

(54) DEVICE FOR DYNAMIC MONITORING OF THE RECEPTION OF UNIFOLAR CODE PULSES IN THE SYSTEM

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The invention relates to automation and computing and can be used in digital data transmission systems.

A device is known that dynamically controls the reception of rf-polar code pulses in an active-zero system, containing the first trigger connected in series and the first element I, to the second input of which a sequence of clock pulses is displaced half a period, as well as a second trigger and second element I c.

However, the known device does not provide control without generating 15 additional clock pulses and imposing a restriction on the speed of the transmission system as a whole.

The purpose of the invention is to provide control without the formation of additional 20 clock pulses and impose a restriction on the behavior of the transmission system as a whole.

To do this, the first- 25 second and second elements OR, while the second input of the first element AND is combined with the first inputs of the second trigger and the first element OR, the second input of which is combined with the first input. with ACTIVE ZERO

the house of the first trigger, to which an unbiased sequence of clock pulses is applied, and the first input of the second element I, the second input of which is connected to the output of the second trigger, the second input of which, combined with the second input of the first trigger, gives the code pulses, and the outputs of the first and second elements And connected respectively with the first and second inputs of the second element OR.

The drawing shows the structure of the proposed device.

The device for dynamic control of receiving unipolar code pulses in an active-zero system contains the first and second triggers 1,2, the first and second elements AND 3.4, the first and second elements OR 5.6, and the device also contains the bus 7 code pulses.

The device works as follows.

The initial state of the first and second triggers 1,2. Are set to the state corresponding to the closed state of the first and second elements And 3 and 4. I

When the first clock pulse with the initial phase i arrives at the single input of the first trigger 1, the latter enters the state by opening the first AND 3 element. The response code pulse arriving on bus 7 restores the initial state of the first trigger 1 and confirms the initial state the second trigger 2. If the code pulse is absent, the first trigger 1 remains in state 1, the first element And 3 will open and the next clock pulse from the initial phase arriving at the single input of the second trigger pa 2 passes through the first AND gate 3, the second element OR b postupayu1tsy will produce an error signal output from the second OR gate used in E) egistriruyuschee device (not shown).

In a similar way, an error signal can be generated in the absence of 2 |, the response code pulse to the next clock pulse with a phase at 4 1C, which came to the unit:. the input of the second trigger 2. This error signal is generated by the next clock pulse with the phase f, coming to the single input of the first trigger 1, and is formed by the second element AND 4 and the second element ORIB.

; Pulses with a phase arriving at the unit input of the first trigger 1, and with a phase fch, arriving at the unit input of the second trigger 2, are fed to the input of the first element OR 5, producing at its output a sequence of clock pulses to start the source of code pulses that go to bus 7 code pulses.

The use of the proposed device in the transmission system over compressed digital communication channels increases its speed. In general, it is not the value / necessary for the formation of three additional clock pulses.

Claims (1)

Invention Formula A device for dynamic control of receiving unipolar code pulses in an active-zero system, containing the first trigger connected in series and the first element I, to the second input of which a sequence of clock pulses displaced by half the period, as well as the second trigger and second element giving This is because, in order to ensure control without the formation of additional clock pulses and impose a limit on the speed of the transmission system as a whole, the first and second OR elements are introduced, while The first input of the first element is combined with the first inputs of the second trigger and the first element OR, the second input of which is combined with the first input of the first trigger, on which an unbiased sequence of clock pulses is supplied, and the first input of the second element AND, the second input of which is connected to the output of the second trigger on the second input of which, combined with the second input of the first trigger, is supplied with code pulses, and the outputs of the first and second elements AND are connected respectively with the first and THIRD inputs of the second elec- tive OR OR. Sources of information taken into account during the examination 1, USSR Author's Certificate No. 371691, class, K 03 K 21/34, 1971 (prototype).