SU919139A1 - Discrete information transmitting and receiving device - Google Patents

Description

FIELD: radio engineering. A device for transmitting and receiving discrete information is known, which contains a block of code combinations, the inputs of which are connected to the syncronizing input of the accumulator and the synonizing input of the transmitter, the output of which is connected to the input of the switching unit, the output of which is connected to the input of the receiving-dialed unit, whose outputs connected to one input of the accumulator, one output of which is connected to the inputs of the control unit l. However, in the known device lack of reliability. The purpose of the invention is to increase credibility. To achieve the goal of a device for transmitting and receiving discrete information, the block contains an input of code combinations, the inputs of which are connected to the clock input of the receiver and the clock input of the transmitter whose output is connected to the input of the switching unit whose output is connected to the input of the receiving and dialer , the outputs of which are connected to one input of the accumulator, one output of which is connected to the inputs of the control unit, a memory block, a driver of clock pulses, a driver of service signals, with a coupler, a decoder and a comparison unit, one input of which is connected to the inputs of the control unit, with information inputs of the transmitter, with the first outputs of the memory unit, with the outputs of the signal processing unit and with other inputs of the comparison unit, the synchronization input of which is connected to the first output of the clock pulse generator , the first input of which is connected to the output of the comparison unit and to the input of the counter, the output of which is connected to the second input of the driver

Tat: csbix impuls ,. the second:; /: ;; one of which is the floor of the keys to the cr-locking memory memory unit, the second output is connected to the third input of the forg4ioeEatel pulse,

the third KOTOpofo is connected to the synchronizing input of the accumulator, which is connected to the inputs of the decoder, the first output of which is connected to the fourth input of the clock pulse generator, the fifth input of which is connected to another output of the accumulator, the other input is connected to the second output of the decoder, moreover, the fourth output of the clock clock pulse is connected to the former of the clock ;; 6 signals, and the outputs of the block of input code combinations are connected to the corresponding inputs of the block

memory

The ria drawing shows a structural electrical circuit of the proposed device.

The device contains a block 1 input code combinations drive 2, a receiving-dialing block 3 block k PA MIT--;, transmitter 5 decoder 6, block 7 control driver 8 service (x signals, counter 9;

W switching unit. Shaper 11 pulse tactic 5 block 12 comparison

The device works as follows

P h 3 o M and

In the station A transmission mode: a combination code from the outputs of block 1 is input by the resolution signal from the forming body 11 at a given speed, for example, 200 baud S is recorded in the memory block t and from its outputs, the transmitter inputs 5. which form the signal; STOP COMBINATION Under the control of synchronizing signals from the generator 11 (t, e, with a given speed, for example 200 baud), from the transmitter 5 output, the code combination goes to the line through the switching unit 10, for example, to a circuit formed by a city or PBX , The switching unit 10 ensures the transmission with a given control of signals “for example i 60 V. or i 1 5. V and t, d”

In the reception mode of station B: cbd code. through the switching unit 10 from the line (or communication channel) nocTyriaeT to the input of the receiving unit of the unlocking unit

ZU4

The 3 parallel code is written to the drive of the accumulator 2. In this case, the overhead decoder 6 detects the presence of service combinations or signals. In the absence of overhead signals, the control unit 7 permits the issuing of a code combination to the outputs of accumulator 2 and connecting the transmitter 5 to the outputs of accumulator 2. If the communication system algorithm provides for the transmission of information from the transmitter of station B using resolution commands (remote control) from station A, then transmission code combination to station A at the input of the receiving-dial unit 3 should receive a service signal transmission. This signal is decrypted and fed to the driver 11, which permits the connection of the transmitter 5 to the outputs of the drive 2.

In the transmission mode of station B: according to the control signal of the generator 1 1, the inputs of transmitter 5 are connected to the outputs of accumulator 2 and through the unit under the control of synchronization signals from the generator 11, the code combination is transmitted in the opposite direction (in half duplex) to station A,

In dir1-1me reception station A; code combination f from station B. through block 10 enters receiving-dialing unit 3 and to drive 2, C 2 is fed to generator 11, which allows the operation of comparing code combinations at the outputs to save 2 and block; memory

Claims (2)

If there are no errors, i.e., if all bits of the matching code combinations match, the comparison unit 12 issues the corresponding signal to the Shaper 11, the code combinations written into the memory block k and the drive 2 are written off this signal, the writing is allowed the next combination from block 1 of input to block 4 of memory. If the operation algorithm provides for sending a service signal to the station B to confirm the right reception of code information, then the transmitter 5 sends a service signal to the transmitter 5 as instructed by Shaper 11 and the next service signal is transmitted after station B k memory combination. If, however, to confirm the correctness of the reception of the code combination, a signaling signal is not provided, then the next information combination is transmitted from block 1 using transmitter 5 and block 10 Repeated transmission of station A: if, when comparing the combination at the outputs of accumulator 2 and memory block k, the block 12 comparison detects a mismatch (error), then the control unit 7 by the error signal from the output of the block 12 connects the driver to the input of the transmitter 5. From the driver 8 to the station B the Error (erase) signal is transmitted. Following it, the combination of information bits to station B is re-transmitted from the memory block k. Repeated station reception. B: upon receipt of a signal Error at the input of the receiving-dialing unit 3 signal Erasing to drive 2 and deducting the previously received code combination; Thus, the receiver of station B is prepared for a new (repeated) reception of a code combination. With the arrival of the code combination on the switching unit 10, it is again recorded through the receiver-dial unit 3 into on-line. storage tank 2. The further process of receiving information by station B and transmitting information to station A occurs similarly to the previously described one. Sending and receiving signals of changing the speed of wiring: in case of exceeding the frequency of repetitions (errors) of the limit set by the algorithm of operation of the device, the output will be counted. The driver sends a signal to the driver P, according to which the driver 8 sends a signal to a lower transmission rate to station B from station A. At station H, this signal (set of code combinations) is decrypted in decoder 6 and transmitted to shaper 11 Shaper 11, using shaper 8 service signals, transmits to station A a signal confirming that a change to the new speed is received. Station A receives this signal. It .. 39 - 6 is decrypted in decoder 6 and outputted to the generator A. Station A. After this, station A and station B transition to a lower wiring speed. In case of the number of errors (repetitions) less than a predetermined counter 9, a transition signal is output to driver 11 at a lower wiring speed. In this case, from station A to station B, a signal is output corresponding to a higher transmission rate (reception) of information, similar to that previously described. Thus, it is possible, depending on the state (quality) of the channel, to vary the speed of wiring within specified limits. Apparatus of the Invention A device for transmitting and receiving discrete information, comprising a code combination input unit, the inputs of which are connected to a synchronization input of an accumulator and a synchronization input of a transmitter, the output of which is connected to the input of a switching unit, the output of which is connected to an input of a receiver-small block, whose outputs connected to the same drive inputs, one output of which is connected to the inputs of the control unit, characterized in that, in order to increase the reliability, a memory block is inserted, the driver signal impulses, a service signal generator, a counter, a decoder and a comparison unit, one input of which is connected to the inputs of the control unit, information inputs of the transmitter, with the first outputs of the memory unit, other outputs of the reference signal generator, the synchronization input of which connected to the first output of the clock pulse generator, the first input of which is connected to the output of the comparison unit and to the input of the counter, the output of which is connected to the second input of the clock pulse generator owls, the second output of which is connected to the clock input of the memory, the second output of which is connected to a third input of the 79191 clock pulses, the third output of which is connected to the clock input of the accumulator, one output of which is connected to the inputs of the decoder, the first output of which is connected to the fourth input of the clock pulse generator, the fifth input of which is connected to another output of the storage device, the other input of which is connected to the second output decoder, and even-to, the lateral output of the clock clock 98 The pulses are connected to the input of the overhead signal generator, and the outputs of the block of input of code combinations are connected to the corresponding inputs of the memory block. Sources of information taken into account in the examination 1, Kopnichev L.N. et al. Documentary communication. M., Svy, 1977, p.73-80 (prototype).