SU886034A1 - Device for data receiving - Google Patents

Description

(5) DEVICE FOR RECEPTION OF INFORMATION

one

The invention relates to telemechanics and may find application in information reception systems transmitted by a uniform binary code.

A device for receiving information is known, comprising a receiver, code feature selectors, a gated decoder, a binary counter, a memory register and a synchronization unit (1.

The disadvantage of this device lies in its low reliability, which is caused by the structural complexity and the inability to ensure the recording of binary code signals under the conditions of interference and scatter of the circuit parameters.

Closest to the proposed technical essence is a device for receiving information containing a receiver, the input of which is connected to the input of the device, the output: the receiver is connected to the input of the selector for the code sign of a unit and to the selector of the code sign for zero, the output of the selector for the code sign of a unit is connected to information the input of the shift register and with the first input of the OR element, the second input of which is connected to the CARE of the selector of the code feature zero, the outputs of the shift register are connected to the corresponding output device tires 2.

The device has limited noise immunity. This is due to

10 so that. in the pauses between the work of the transmitting half-sets, the receiving device is in standby mode, its shift register is reset and it is ready to receive information arriving

15 at his entrance. At the same time, the information and clock inputs of the register are empty and subject to possible interference, and since the time of receiving a message is incommensurable with time

20 pauses, the noise immunity of the device is thereby greatly reduced. In addition, the absence in the device of the signal generation unit of the end of the message receiving cycle makes it difficult to assess the completeness of the information received and recorded in the register and determine the time of reading the received information and output register buses for its further processing and release of the register for receiving the new message.

The purpose of the invention is to improve the noise immunity of the device.

The goal is achieved by the fact that in the device for receiving information containing a receiver, the input of which is connected to the input of the device, the output of the receiver is connected to the input of the unit code selector input and to the input of the code sign selector zero, the output of the unit code selector input is connected to the information input of the shift register and with the first input of the OR element, the second input of which is connected to the output of the selector code feature zero, the outputs of the shift register are connected to the corresponding output buses of the device WA, H5-trigger and BANNER element are entered, the output of the code sign selector zero and the output of the code sign selector of the unit are connected to the corresponding inputs of the JE trigger, the direct output of which is connected to the shift register reset bus, connected to the installation bus the device zero, the clock input of the shift register is connected to the output of the BANGE element, the direct and inverse inputs of which are connected respectively to the output of the OR element and to the control output of the shift register,

The drawing shows a block diagram of the proposed device. .

The scheme contains a receiver 1, a selector-torus 2 code feature unit selector 3 code feature zero, element OR 4, element BAN 5, shift register 6, K5 trigger 7, output tires 8, bus End message 9 and bus 10 set to zero.

The device works as follows ..,

In the initial state, i.e. in the absence of reception, the yb-trigger 7 is set to the zero state and keeps the shift register 6 on the reset bus in the zero state, thereby eliminating the insertion of false information into the latter due to interference.

The transmitted message is received by receiver 1 and is fed to the inputs of selectors 2 and 3. The elementary parcel appears with the code sign zero or

units leads to the appearance of a single signal at the output of the corresponding selector.

For normal operation of the device, each transmitted message is supplemented by a message (hereinafter referred to as the start message, preceding the information one, and representing a signal with the O and 1 code characteristics simultaneously, which makes it difficult to form it due to .mech.

When receiving a starting parcel and allocating it with both device selectors, RS trigger 7 is set to 1 and the installation zero potential is removed from the reset register bus 6, thereby allowing

In it the message, followed by the starting parcel.

At the same time, the starting message is recorded.

1 for the first digit of the shift register 6.

This happens as follows.

A single signal from the output of the element OR k is fed to the direct input of the element BANGE 5 at the inverse input of which there is a resolving zero signal from the direct output of the additional high-priority trigger of the shift register 6 from the last bus and generates at its output a single signal that arrives

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on the register clock input. And since there is a single signal from the output of the selector 2 of the code sign of the unit at the information input of the register, 1 is recorded in the register 6.

In the future, when the selectors receive and select the code signs of each informational message, the output of the BANNER 5 element is formed

0 is the clock pulse, which is used to record the value of the information signal received at the information input of the register into the first register register 6.

5 At the same time, clockwise pulses carry out one-by-one advancement of previously recorded information, with each clock pulse having

Claims (1)

SUMMARY OF THE INVENTION A device for receiving information containing a receiver, the input of which is connected to the input of the device, the output of the receiver is connected to the input of the code indicator selector unit and to the input of the code indicator selector zero, the output of the code indicator selector unit is connected to the information input of the shift register and to the first input of the element OR, the second input of which is connected to the output of the selector of the code sign of zero, the outputs of the shift register are connected to the corresponding output buses of the device, characterized in that, in order to increase the noise immunity of the device, the -RS trigger and the FORBID element are introduced into it, the output of the code indicator selector zero and the output of the code indicator selector are connected to the corresponding inputs of the RS trigger, the direct output of which is connected to the reset register reset bus, the installation input The RS-flip-flop is connected to the zero bus of the Device, the clock input is shifted · -. the melting register is connected to the output of the element BAN, the direct and inverse inputs of which are connected respectively to the output of the OR element and to the control output of the shift register.