SU1462505A1 - Telegraph communication system - Google Patents

Abstract

This invention relates to telegraph communication. The purpose of the invention is to show the reliability of the transmitted information. The system contains on the transmitting side of the telegraph unit 1, switches 2 and 3, the converter (P) 4 uniform code into a unit code, drives 5 and 7, .P 6 unit code into a non-uniform digital code, P 8 non-uniform digital code in Morse code and g 9 and 10 clock pulses, and on the receiving side switches and the Morse code 15, the Morse code in the uneven digital code, drives 16 and 17, the P 18 non-uniform digital code in the unit code, P 19 the unit code in the uniform code, G-ry 20 and 21 clock pulses, the synchronization unit 22 and telegraph appar at 23. The goal is achieved through the rapid transition to the transfer of information by Morse code. 1 il.

Description

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I The invention relates to telegraph communication and can be applied in ship radio communication devices. ; The purpose of the invention is to increase the reliability of the transmitted information by quickly switching to the transmission of information by Morse code,

The drawing shows a block diagram of the communication system, the i-Telegraph communication system contains on the transmitting side a telegraph device 1, the first 2 and second 3 switches, a uniform code converter 4 into a single code, a first connector, 5, a converter 6 one Yogo code into a non-uniform digital | sod 6, second drive 7, a predominantly: an exponent 8 non-uniform cis-c: a second code into a Morse code; The first 9 and second 10 clock pulse generators: s, the converter 4 of a uniform code into a single code contains an otstop receiver 11 and an encoder 12,, 1 on the receiving side. - the first 13 and second 14 switches, the Morse code converting | non-uniform digital code, first 16 and second 17 Drives, converter 18 not -. /, uniform digital code into a single code, converts 19 single-digit code into a uniform code, first 20 and second 21 clock generators, synchronization unit 22 1 telegraph unit 23., and the driver 1 9 single code i uniform code contains the encoder 24 And start-up transmitter 25. „. The system works as follows.

: The ability to prefix Morse code characters as the sum of the elements of an Uneven six-element digital code simplifies the code-conversion on the transmitting side (I of the telegraph's keyboard 1 You can create any new Morse-type combinations (returning the line, transferring the lineJ, registers, etc.) ), and the ID of the receiving side, apart from uniformity, of building transducers with the transmitting side, will increase the reliability of receiving the Morse code.

 I, as a result of the combination of a Morse code by a sequence of non-uniform digital code, an estimate of the ratio Nezhdu duration-current and sum L; values of current and current

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parcels, which provides a more stable and reliable reception of Morse code. Representation of Morse code combinations by a sequence of non-uniform digital code elements that are combinations of current and current packages, i.e. binary assumptions, and their determination at the receiving side based on the evaluation of the relationship between the current and the sum of the durations of the current and current topping, is the reception of the code as a whole.

The Morse code can be represented by an uneven digital hexadecimal code — an unequal-graded spherical code with 6 elements.

As code elements, the following combinations of durations of the current supply and the subsequent pause are taken:

1- short current dressing and equal to it for the duration of the pause (To) with the total duration of the element 2Toj

2 is the length of the sending of current (ZTO) and a short pause (That) with the total duration of the element 4To;

3- short current reading (That)

and the length of the pause (ZTO), with the total duration of the element 4To;

4 is the length of sending the current of the final stage and the length of the pause with the total duration of the element;

5- short current position (To) and a long pause, equal to the duration of the section between the words (5To), with the total duration of the element bTo;

6- is the length of the current (ZTO) and the length of the pause is equal to the duration of the section between the words.

In the position of the switches 2, 3, 13 and 14 on a uniform code (i.e. in the uniform code mode of operation), the transmitted signals from the telegraph unit 1 are sent to the telegraph unit 23, where they are printed on a tape or roll.

In the position of the switches 2, 3, 13 and 14 on the Morse code, the combinations of the uniform telegraph code (for example, MTK-2) transmitted from the telegraph device 1 (from the keyboard) go through the second switch 3 to the start-up receiver 11, where it is 5 liters ( are formed) in a parallel code, five packages, which then go to encoder 12, and are converted into a signal at one of the outputs of the converter and a uniform code in

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single code. The generated unit code signal goes to the first drive 5 and goes to the converter of the unit code to non-uniform digital code 6, from which the second number 7 leads to the required number of wires for 6 wires in a group (according to the number of non-uniform digital code elements). The number of groups is determined by the length of the longest combination of Morse code (6, 7 or, for example, 10).

From the output of the second accumulator 7, signals in the form of an uneven digital code are fed to the inputs of the converter 8 of a non-uniform digital code, where the code is converted into a Morse code, the signals of which through the first switch 2 arrive on the communication channel.

At the receiving side, the received Morse code signals go through the first switch 13 to the input of the Morse code converter t5 into an uneven digital code. Code signals appear at the output of converter 15 for 6-10 groups of wires with 6 wires each and are fed to the inputs of the second accumulator 17 and then fed to the inputs of converter 18 of a non-uniform digital code into a single code. The signal of a single code is fed to the inputs of the first accumulator 16 and further to the inputs of the converter 19 of a single code into a uniform code. In this converter, a single signal is fed to the encoder 24, which produces a five- or seven-element combination of a uniform code, which is fed to the start-stop transmitter 25 in parallel form. The start-stop transmitter 25 transmits a combination of a uniform code in a sequential form through the second switch 14 to the telegraph unit 23. The telegraph unit 23 prints a received message on a roll or ribbon that was transmitted in a communication channel by a Morse code. Generators of 9 and 20 clock pulses provide the necessary speeds for operation with telegraph devices of uniform code. The second generator 21 clock pulses and block 22 synchronization provides the desired speed of reception of signals Morse code.

Thus, the Morse code signals received from the communication channel transform

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A stream of uniform code signals is fed to the telegraph unit 23 and printed on paper. Since there are no service combinations of the uniform MTK-2 code in the Morse code: Space Carriage return, Line feed, Registers, it is necessary to introduce new combinations by the Morse code type for their transfer. It is advisable to make new combinations with a large number of bits (for example, 10), ensuring their distinction during auditory reception.

In the five-element code, the letter H and the number 4 are transmitted by the same combination, therefore the conversion to the Morse code is not complete and not convenient for hearing, but valid for this system. If, on the other hand, it is intended to accomplish hearing, then this disadvantage can be eliminated by using apparatus capable of forming a sign of distinguishing 5 books from the number 4.

The effectiveness of this telegraph communication system is that communication flexibility is increased due to the possibility of a quick transition from 0 one code to another (from a uniform code to Morse code and vice versa); message transmission is performed from the keyboard of the telegraph apparatus, the received message is imprinted by the 5 telegraphic printer (when operating with any code) J The Morse key is no longer needed, the operator is not required to learn Morse key and receive Morse 0 signals by ear; the high immunity of reception of combinations of a morse code is provided, is greater than when receiving combinations of a uniform code.

Claims (1)

5 claims The telegraph communication system, the telegraph apparatus on the transmitting side, the first switchboard, the converter of the uniform code in a single code, the outputs of which are connected to the inputs of the first accumulator, and on the receiving side - the first switch, the telegraph unit, the first; storage device, the outputs of which are connected to the signal inputs of the converter of a single code into a uniform code, characterized in that, in order to increase the fidelity of the transmitted information due to the operative transition to the transfer of information by Morse code; a converter of a single code into an uneven digital code is entered on the transmitting side; a second drive, a converter of an uneven digital code into Morse code, a second switch, the first and second clock generators, and the output telegraph apparatus is connected to the signal input of the second switch, the first and second outputs of which are connected respectively to the input. converter uniform code in a single code and the first input of the first switch, the outputs of the first drive are connected to the inputs of the converter of a single code in uneven digital code, the outputs of which are connected to the inputs of the second drive, the outputs are connected to the signal inputs of the converter of uneven digital code in the Morse code , the output of which is connected to the second input of the first switch, the output of the first clock generator is connected to the clock input of the converter of the uniform code to the unit K one, the output of the second second clock generator is connected to the unequal input of the converter unequal 1462505 dimensional code in the Morse code, and on the receiving side entered the Morse code converter into an uneven 1SCF-to-one, second drive, an uneven digital code converter into a single code, the first and second clock generators and the synchronization unit, the first and second outputs of the first switch connected respectively to the first input of the second switch and the signal input of the Morse code converter into a non-uniform digital code, the signal outputs of which are connected to the inputs of the second accumulator, output The ports of which are connected to the converter inputs of a non-uniform digital code into a single code, the outputs of which are connected to the outputs of the first accumulator, a clock input and the output of the converter of a single code. In the uniform connection code, respectively, with the output of the first clock generator and the second input of the second switch, the output of which is connected to to the input of the telegraph apparatus, the clock output of the Morse code converter into an uneven digital code through a serially connected synchronization unit and a second generator a clock connected to the sole so tovomu entry.