SU1608721A1 - Data receiver - Google Patents

Abstract

The invention relates to the transmission of pulse-width signals and can be used in telemetry systems in the transmission of different polarity signals. The device contains pulse formers 2 and 3, delay element 4, elements NOT 5 and 6, trigger 7, elements AND 8 and 9. The device receives a pulse-width signal, information pulses of which are separated by pulses of fixed duration. In this case, the polarity of these pulses determines the polarity of the input signal. The device allows you to decode the input signal and at the outputs generates a signal of positive and negative amplitude, respectively. 1 il.

Description

The invention relates to the reception of pulse-width signals and can be used in telemetry systems for receiving polarized signals.

The core of the invention is the increase in information content due to the reception of different polarity signals.

The drawing shows a block diagram of the device.

The device for receiving information contains the first 1, second 2 and third 3 pulse generators, delay element 4, element NOT 5, element OR 6, trigger 7, first 8 and second 9 elements I.

The device works as follows.

 Initially, the device is set up, for which a pulse is applied to the control input, which translates trigger 7 into the initial state.

When information arrives, the leading edge of the pulse, after a time equal to the delay time of the delay element 4, triggers trigger 7, while the output potential of the HE 5 has a low potential and the second output of the device (negative voltage output) also has a low potential. There is a high potential on the first and second inputs of the AND 8 element, which begins to form a worm-pulse signal at the first output of the device (positive voltage output .-) At the moment the input pulse terminates, the trailing edge of the pulse-width signal the impulse of the former 1, formed on the trailing edge, through the element OR 6 resets the trigger 1 to the initial state. The falling edge of the input pulse re-triggers trigger 7 again after the delay time, and the device receives the next pulse.

When receiving pulses that carry information about negative values, the device operates as follows.

The falling edge of the previous pulse after the time delay cocks the trigger 7, at the output of the element And 8 a low

WITH

with

oh oh

00 XI

| yu

the level, since a low level is present at the device input, a high potential is present at the output of element And 9, a pulse is formed at the second output of the device, a low potential is formed at the output of element And 9, the pulse of the driver 3 through the element OR 6 resets the trigger 7 to the initial state, those. pulse formation is completed at the second output of the device. Trigger 7 is charged by the leading edge after a delay time and the next pulse is formed in the same way.

Claims (1)

Thus, the proposed device receives different polarity-pulse-width signals, which allows to increase its information content. Apparatus of the Invention A device for receiving information, comprising a first pulse shaper, whose input is the information input of the device, and a trigger, the output of which is connected to the first input of the first AND element, which is 0 five 0 By the fact that, in order to increase the information content due to the reception of different polarity signals, the second and third pulse shapers, the second AND element, the delay element, the NE element and the OR element are entered into it, through the delay element, the output of the first pulse shaper is connected to the first trigger input whose output is connected to the first input of the second element AND, the outputs of the first and second elements AND, respectively, through the second and third pulse shapers are connected respectively to the first and second inputs of the OR element, whose output is Inna with the second input of the trigger, the second input of the first element AND is the information input of the device and through the element is NOT connected to the second input of the second element AND, the third input of the OR element is the control input of the device, the outputs of the first and second elements AND are respectively the first and the second outputs of the device. 8) (one th eleven „{Similar Output positive napr / kenya Output negative for example