SU1290557A1 - System for transmission and reception of digital information - Google Patents

Abstract

The invention relates to telecommunications and can be used to control the movement of objects. The purpose of the invention is to increase throughput. The system contains information source 1 at the first station, a decryption unit (DB) 2, a code conversion block 3, a single vibrator 4, an amplitude modulator (AM) 5, a generator 6, a key block 7, an information receiver 8, an amplitude selector 9 and a field Rune selector 10, and at the second station information recipient 11, code conversion unit 12, DB 13, information source 14, AM 15, single-vibrator 16, polar selector 17 and amplitude selector 18. When the system is turned on or off, it is excited using the generator 6, the key block 7, the one-shot 4, the DB 9 and AM 5, which It generates pulses, respectively. sync pulses. DB 2, the conversion unit 3 and AM 5 provide the formation of the word necessary for transmission to the communication channel. The length of the transmitted word is 27 bits, of which 8 are address, 13 are information, 6 are auxiliary. The transmission of words in both directions occurs simultaneously with pulses of different polarity. 1 il. to (L to X) about the joint venture

Description

The invention relates to telecommunications and can be used to control the movement of objects.

The purpose of the invention is to increase throughput,

The drawing shows a structural electrical circuit of the system for transmitting and receiving discrete information.

The system for transmitting and receiving discrete information contains at the first station information source 1, decryption unit 2, code conversion unit 3, one-shot 4, amplitude modulator 5, generator 6, key block 7, recipient of information 8, amplitude selector 9, field Rune selector 10, and at the second station — receiver of information 11, code conversion unit 12, decryption unit 13, information source 14, amplitude

modulator 15, one-shot 16, polar selector 1 7, amplitude selector 18

The system works as follows.

The length of the transmitted word is 27 bits, of which 8 are address 13 - informational and 6 - auxiliary. The transmission of words in both directions occurs simultaneously, and the clock frequency of the transmission is corrected automatically depending on changes in the electrical parameters of the communication channel.

A word begins with two consecutive clock pulses, then 8 bits of the address, a split clock, 8 bits of data, a split clock, 5 data bits, a split clock and one clock pulse to separate two words are transmitted. Words are transmitted in both directions by pulses of different polarities. When the system is turned on or accidentally fails, the generator 6 excites, the pulses from which pass through the key block 7 and start the one-shot 4, the pulses of the one-shot 4 are modulated by an amplitude modulator 5, to the input of which control pulses from the decryption block 2 and data pulses and addresses from the code conversion unit 3. In this case, when a control pulse from the first decryption unit 2 appears, the amplitude modulator 5 generates a pulse corresponding to the sync pulse. The pulses from the one-shot 4 arrive at

five

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the third input of the amplitude modulator 5 and the second input of the decryption unit 2. The pulses from the third output of the decryption unit 2 arrive at the second input of the amplitude modulator 5. According to this number, the amplitude modulator 5 modulates the pulses from the single-oscillator 4 corresponding to the clock pulses, in accordance with the number the impulse that came from the decryption unit 2, the information is output from the information source 1 to the first output in bits. The parallel code is converted into a serial one, and the serial code is output in accordance with the signals from decryption unit 2. The sequence code is fed to the second input of the amplitude modulator 5, where it is modulated together with the clock pulses from the one-oscillator 4. Thus, the block decoding 2, the code conversion unit 3 and the first amplitude modulator 5 provide the formation of the word necessary for the transmission of the SB communication channel. The pulses transmitted to the communication channel have a certain polarity, such that the polar ph: selector 17 selects these pulses, and the sex selector 10 does not. Pulsed using a polar selector 17, the pulse train is then divided by an amplitude selector 18 into a clock pulse train and a sequence of data pulses and clock pulses. The back edge of a clock pulse triggers a one-shot 16, the pulses of which are modulated by an amplitude modulator 15 in amplitude, and the polarity of the pulses is such that they are output only by the polar selector 10. After the separation in the amplitude selector 9, the clock pulse turns off the pulses of the generator 6 and the back front triggers one-shot 4. Since the frequency of the clock pulses is approximately 100 times higher than the frequency of the generator 6, the oscillator does not affect the operation of the circuit when there are clock pulses. The formation of the word in the opposite direction is carried out similarly.

Claims (1)

Invention Formula A system for transmitting and receiving discrete information comprising each station, the information source, the recipient of information, the code conversion unit and the one-shot, while the first station contains a decryption unit and a generator, so that, in order to increase the bandwidth, a key block, a decryption block at the second station, and an amplitude modulator, a polar selector and an amplitude selector at each station, the second and third outputs of which are connected respectively to the second and third inputs of the recipient, the first input of which is connected En to the third output of the single-oscillator, the second output of which is connected to the third input of the amplitude modulator, the first input of which is connected to the output of the code conversion unit, the first and second whose inputs are connected respectively to the first and second outputs of the decryption unit, the first input of which is connected to the first output of the information source, the second output of which is connected to the third input of the code conversion unit, the first output of the single vibrator is connected to the second input of the decryption unit, the third output of which is connected to the second the input of the amplitude modulator, the output of which is connected through the floor to the selector connected to the input of the amplitude selector, the first output of which the ria of the first station is connected to the second input of the key block s, the first input of which is connected to the generator output key block output is connected to the input of monostable multivibrator, and wherein the first output of the amplitude selector at the second station connected to the input of monostable multivibrator.