SU960891A1 - Tv data signal transmitting device - Google Patents

Description

The invention relates to radio communications technology and is intended primarily for use as part of radio centers for remote control by automated radio transmitters. ⁵

A device for transmitting information is known, comprising a pulse generator, a counter, code buses, an input unit of co-, θ command, command transmission buses, AND elements, a response signal bus, memory elements, an information analysis and display unit and a pulse distributor, and at a controlled point ₁₅ — telecontrol signal decoders, response signal decoders, second AND elements, command execution unit, and formation of response cmi. 20

The disadvantages of these devices are the relative functional complexity and the lack of the ability to use the remote control line both for remote control and for the transmission of information * ·

Closest to the proposed one is a device for transmitting and receiving teleinformation signals, comprising a command generation unit on the transmitting side, the output of which is connected to the input of the command encoder, the output of which is connected to the first input of the OR element, a clock generator, the first output of which is connected to the first input of the command generator and to the second input of the command encoder, and on the receiving side, a command decoder, the output of which is connected to the first input of the interface unit, the output of which is connected to the first input of the And element, the allocation unit I have clock cycles, the first output of which is connected to the first input of the command decoder and to the second input of the interface unit, the output of the OR element through the communication line is connected to the input of the decoder

960891 4 ra of instructions and block selection clock cycles of the receiving side 12}

However, in this device, information signals and control commands are not synchronized, and when using ~ one channel of the communication line to transmit telecontrol commands and information at the moments of control cycles, desynchronization occurs (with the control command clocks of 10 devices located on the receiving side of the information communication channel, which causes The need to re-enter the connection.With frequent frequency tunings, especially in adaptive radio links, this leads to an increase in the response time of the system to various external influences, which reduces the average throughput of the communication channel.go In addition, it is impossible to use an information regenerator in this device before applying the latter to the modulator input due to the absence of a common synchronous voltage, $ 2 since the operation of this regenerator becomes unstable due to its malfunctions asynchronous clock cycles during control cycles. Therefore, the information emitted by a radio transmitter, as a rule, does not undergo regeneration and has telegraph distortions caused by its passage along the dist line translational control.

The purpose of the invention is to improve the quality of information reception and increase the speed of the device.

_{Is the} goal achieved by that _? that in a device consisting of a transmitting part containing a command generator, the output of which is connected to the first input of the command encoder, the output of which is connected to the first input of the OR element, a clock generator, the first output of which is connected to the first input of the command generator and to the second input of the command encoder, the receiving part containing the decoder, the output of which is connected to the first input of the interface unit, the output of which is connected to the first input of the AND element, the clock allocation unit, the first output of which is connected to the first input of the decoder and to to the second input of the interface unit, the output of the OR element of the transmitting part is connected through the communication line to the input of the clock selection unit and to the second input of the decoder, a phasing unit is introduced on the transmitting part, the output of which is connected to the second input of the OR element, the second output of the clock generator is connected to the input of the phasing unit, at the receiving part a regenerator, the output of which is connected to the second input of the And element, the second output of the clock selection unit is connected to the first input of the regenerator, the output is connected to its second input via a communication line element OR transmitting part.

The drawing shows a functional electrical diagram of the inventive device.

The device consists of a transmitting and receiving parts connected by a communication line, while the transmitting part contains 1 command shaper, the second inputs (1-p) of which are designed for telecontrol signals, and the second output is connected to an information source (not shown), 2-clock generator * encoder 3 commands, phasing unit 4, the second input of which is connected to an information source (not shown), OR element 5, communication line 6. The receiving part contains a command decoder 7, a clock allocation unit 8, an information regenerator 9, an interface unit 10 (with a radio transmitter), an element 11. The outputs (l-η) of the interface unit 10 with a radio transmitter are intended for issuing remote control signals to a transmitter (not shown) ) the output of the element And 11 is intended for ³ supply of information to the modulator- (not shown).

The device has two operating modes: remote control and information transfer.

In the remote control mode, signals are fed to the corresponding inputs (1-p) of the command generator 1, the main function of which is to pair the television information signals with the encoder of 3 teams, as well as giving a command through the information output to the information source to stop its transmission. The encoded commands through the OR element 5 are fed to the input of line 6. To ensure synchronous operation of the shaper 1 commands and the encoder 3 teams to the second inputs of these * devices supply voltage reference cycles and cycles from the generator · 2, which ensures the receipt of signals to the input of line 6 only in synchronous cycles and cycles with information

960891 6 sequence of time points. In the remote control mode, information is not received at the information input of the phasing unit 4, and signals from the generator 2 are not received at its other input. On the receiving side, from the output of line 6, the telecontrol commands are sent simultaneously to the inputs of block 8, decoder 7, and the regenerator. 9 information ¹⁰ . The second inputs of the decoder 7 commands, the pairing unit 10 and the information generator 9, regardless of the operation mode of the device (telecontrol or transmission of working information ^{, 5th} ), receive synchronous voltage from block 8, which allows decoded commands to be executed without prior phasing by clock cycles and cycles. From the output of decoder 20 ra 7, the decoded commands are sent to the block 10 for interfacing with the radio transmitter, · from the output of which is directly to the controls of the radio transmitter. 25

In the information transfer mode, information is fed to the input of the information phasing block 4, where it is synchronized by clock cycles and Cycles received from the generator of 2 reference clock cycles and cycles.

From the output of the information phasing unit 4, synchronized information through the OR element 5 is fed to the input of the line. 6. On the receiving side 35, information signals pass through the information regenerator 9 (which corrects telegraph distortions that occurred in the remote control mode of the radio transmitter) and element 11, decoder 7 does not decode the commands, since a special key combination does not arrive at its input . ₄₅

An exception to the possibility of isolating this combination from the information sequence is achieved by introducing appropriate redundancy. Block 8 allocation of synchronized clocks and cycles makes adjustments for the working signals of the allocated synchro voltage.

So, at the initial moment of telecontrol, a special key combination is emitted into the _55th ether, which on the air has time cycles and cycles strictly synchronized with the cycles and cycles of previously transmitted information. Therefore, its reception at the other end of the information communication channel does not cause a clock voltage failure and out of synchronism of the terminal equipment. After the tuning of the working radio channel of communication to a new working frequency, the resumption of the terminal equipment becomes possible without entering synchronism. This, in turn, reduces the loss of time in restoring the communication channel, which increases the average throughput of the communication channel.

As shown by the calculation and experimental verification on experimental adaptive automated 'radio communication lines, the introduction of new elements of the phasing block of information on the transmitting side and the information regenerator on the receiving side made it possible to reduce the entry time into the communication by 1.5 “2 times and to increase the reliability of information reception when working with the maximum permissible error level by ¹ 25-30¾.

Claims (2)

(5) DEVICE FOR TRANSMITTING TELEINFORMATION SIGNALS The invention relates to a radio communication technique and is intended primarily for use in radio centers for remote control of an automated radio transmitter. A device for transmitting information contains, at a control point, a pulse generator, a counter, code buses, a command input unit, command transmission buses, AND elements, a response signal bus, memory elements, information analysis and display unit, and a pulse distributor. paragraph — telecontrol signal decoders, response signal decoders, second AND elements, command execution unit and response signal generation. The disadvantages of these devices are relative functional complexity and absence is possible. Using the remote control line both for remote control and for information transfer. The closest to the present invention is a device for transmitting and receiving teleinformation signals, which on the transmitter side contains a command generation unit whose output is connected to the input of a command encoder whose output is connected to the first input of the element OR, clock generator, the first output of which is connected to the first input of the command driver and to the second input of the command encoder, and on the receiving side - a decoder of commands, the output of which connected to the first input of the interface unit, the output of which is connected to the first input of the AND element, the block of clock selection, the first output of which is connected to the first input of the command decoder and to the second input of the interface unit, the output of the element OR is connected to the input of the command decoder and a block for allocating clocks on the receiving side C 23 However, in this device, the information signals and control commands are not synchronized when using one channel of the communication line for transmitting commands of telecontrol and information at times of cycles desynchronization occurs systematic way (every device control commands, present on the reception side of the information communication channel, necessitating a dressing iterated ingression bond. With frequent frequency adjustments, especially in adaptive radio links, this leads to an increase in the system response time to various external actions, which reduces the average capacity of the communication channel. In addition, in this device it is impossible to use a regenerator of information before applying the last to the modulator input due to the absence of a common synchronous voltage, since the operation of this regenerator becomes unstable due to its failures by unsynchronous ticks during control cycles. Therefore, the information emitted by the radio transmitter As a rule, it is not subject to regeneration and has telegraphic distortions caused by its passage through the remote control line. The purpose of the invention is to improve the quality of reception of information and increase the speed of the device. The goal is achieved by those in the device consisting of the transmitting part containing the command driver, the output of which is connected to the first input of the command encoder, the output of which is connected to the first input of the OR element, the clock generator, the first output of which is connected to the first input of the command driver and to the second input of the instruction coder, the receiving part containing the decoder, the output of which is connected to the first input of the interface unit, the output of which is connected to the first input of the And element, the clock extraction unit, the first output of which Connected to the first input of the decoder and to the second input of the interface unit, the output of the OR element of the transmitting part, is connected through the communication line to the input of the clock selection unit and to the second input of the decoder, the phasing unit is connected to it, the output of which is connected to the second the input element OR, the second output of the clock generator is connected to the input of the phasing unit; at the receiving part, a regenerator, the output of which is connected to the second input of the element AND, the second output of the clock selection unit is connected to the first input of the regenerator, to the second its input is connected via a communication line to the output of the OR element of the transmitting part. The drawing shows a functional electrical circuit of the device being claimed. The device consists of the transmitting and receiving parts connected by a communication line, while the transmitting part contains the shaper 1 commands, the second inputs (1-n) of which are intended for telecontrol signals, and the second output connected to an information source (not shown), a generator of 2 clocks , the instruction coder 3, the phasing unit C, the input of which is connected to the source of information (not shown), the element OR 5 of the communication line 6. The receiving part contains a decoder 7 of commands, a clock extraction unit 8, an information regenerator 9, an interface 10 (with a radio transmitter), an AND element T1. The outputs (1-n) of the interface 10 unit with the radio transmitter, are designed to issue telecontrol signals to the transmitter (not shown) and the output element And 11 is intended to provide information to the module torus (not shown). The device has two modes of operation: remote control and information transfer. In the telecontrol mode, signals are sent to the corresponding inputs (1-n) of the command generator 1, the main function of which is to conjugate the teleinformation signals by the encoder of 3 commands, as well as sending a command via the information output to the source of information to stop its transmission. Encoded commands through the element OR 5 are fed to the input of line 6. To ensure synchronous operation of the command generator 1 and the code of 3 commands to the second inputs of these devices, the voltages of the reference cycles and cycles from the generator-2 are supplied, which ensures the input of signals to the line 6 only synchronous in cycles and cycles with the information 59 sequence points in time. In the telecontrol mode, the information input of the information information block k is not received, and signals from generator 2 are not received at its other input. On the receiving side, the commands of the telecontrol command arrive simultaneously at the inputs of block 8, decoder 7, regenerator.9 information. The second inputs of the decoder 7 commands, the interface unit 10 and the information regenerator 9, regardless of the device operation mode (telecontrol or transmission of working information), receive synchronous voltage from block 8, which allows decoded commands for clock and cycles. From the output of the decoder 7, the decoded commands are sent to the interface 10 unit with the radio transmitter, from the output of which directly to the controls of the radio transmitter. In the information transfer mode, information is fed to the input of the information phasing unit k, where it is synchronized in cycles and cycles, which are derived from the generator 2 reference cycles and cycles. From the output of block 4 of phasing information, synchronized information through the element OR 5 is fed to the input of the line. On the receiving side, information signals pass the information regenerator 9 (which corrects the telegraph distortions that occurred in the remote control mode of the radio transmitter) and And 11, the decoder 7 does not decode commands, because a special key combination does not receive its input. The elimination of the possibility of separation from the information sequence of this combination is achieved by introducing appropriate redundancy. The block 8 for the selection of synchronous clock cycles and cycles makes an adjustment to the working signals of the allocated synchronous voltage. So, at the initial moment of the telecontrol, a special key combination is being emitted to the air, which has time and cycles in the air that are strictly synchronized with the cycles and cycles of the previously emitted information. Therefore, its reception at the other end of the information channel of communication does not cause the clock voltage to be dropped and the terminal equipment out of sync. After the reorganization of the working radio channel to the new working frequency, the resumption of the terminal equipment becomes possible without entering synchronization. This, in turn, reduces the loss of time on the restoration of the communication channel, which increases the average throughput of the communication channel. As shown by the calculation and experimental testing on experienced adaptive automated radio links, the introduction of new elements of the information phasing unit on the transmitting side and the information regenerator on the receiving side made it possible, by comparison with the known, to reduce the entry time by 1.5 2 times. and - to increase the reliability of receiving information when working with the maximum allowable error level by 25-30. A device for transmitting teleinformation signals consisting of a transmitter part containing a command generator, the output of which is connected to the first input of a command encoder, the output of which is connected to the first input of an OR element, a clock generator, the first V output of which is connected to the first input of the command generator and to the second , the input of the instruction coder, the receiving part, the -containing decoder, the output of which is connected to the first input of the interface unit, the output of which is connected to the first input of the AND element, the clock extraction unit, the trans The output of which is connected to the first input of the decoder and to the second input of the interface block, the output of the OR element of the transmitting part is connected via a communication line to the input of the clock extraction unit and to the second input of the decoder, in order to improve the quality of the received information and increase the speed of the device, in it are inserted on the transmitting part the phasing unit, the output of which is connected to the second input of the OR element, the second output from the clock generator is connected to the input of the phasing unit, to the receiving part the regenerator, the output to The second output of the clock selection unit is connected to the first input of the regenerator, its second input is connected via the communication line vy96089 8 of the OR element of the transmitting clock. Sources of information taken into account during examination 1, USSR Author's Certificate No. 720k6k, cl. G 08 C 19/28, 1980. 2. USSR author's certificate number 698083, cl. G 08 C 19/28, 1979 (prototype). Signals UnpafMHue AI (rorm 9