SU1305747A1 - Information reception device for time-division multiplexing of channels - Google Patents

Abstract

The invention relates to the transmission of information and can be used, in particular, in telemetry systems. The purpose of the invention is to increase the reliability of the received information. The received signal from the output of receiver 1 is fed to the input of the distributor 2 pulses, at each of the outputs of which channel pulses are sequentially formed, the duration of which corresponds to the period of the corresponding signal. The selected pulses arrive at the information inputs of the comparators block of 4 channel signals. The 5 g shift registers records the current polling cycle information. In block 8, a bit comparison is compared with the information from the previous survey cycle. In the event of a mismatch, an error signal is generated at the output of block 8 of the bit comparison. The multiplexer unit 7 connects the outputs of the distributor 2 pulses to the outputs of the device in accordance with the signals from the output of the decoder 6. 1 Il. (L with

Description

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g g (m

The invention relates to the field of information transmission and may find application in telemetry systems.

The aim of the invention is to increase the reliability of the received information.

The drawing shows a diagram of the device

The device for receiving information with time division channels contains a receiver 1, a distributor of 2 pulses, an inverter 3, a blkb comparators 4 channel signals, registers 5, -5 shift, decoder 6, block 7 by multiplex of block 7 multiplexers connect the distributor outputs 2 pulses to the device inputs in this way so that at the outputs of block 7 of multi- 5 plexors channel signals are arranged in a predetermined sequence. Block 8 of bit comparison compares the code combinations at the lower and higher bits of the register 5, - 5 L of the shift. Matching code combinations means no synchronization failure. If the code combinations do not match, the level of the logical unit is formed, the signal generated

lexors, block 8 of bitwise comparable 5 error used in the processing of the prini. For N channels, the M value of the determined information.

m N (N-1)

is by the formula

one

(the number of combinations of N elements of two).

The device receiving information with time division channels works as follows.

From the communication channel, the transmitted information is fed to the input of receiver 1, where useful signals are allocated. At the output of receiver 1, a sequence of rectangular pulses is formed, consisting of a series of N channel pulses, the period of which depends on the level of the channel signals. The first channel pulse in the series has, for example, a minimum period and is a reference. From the output of receiver 1, the group message arrives at the input of the distributor 2 pulses, at the outputs of which channel signals are generated. The selected channel signals are sequentially received at the information inputs of the comparators 4 channel signals.

The resulting M-bit pattern is written to the lower bits of the shift registers 5 - 5f, in the upper bits of which the M-bit bit of the previous cycle is stored. From the code pattern of the low-order bits, using the decoder 6, it is determined at which of the outputs of the distributor 2 pulses the signal of the reference channel is formed. The level of the logical unit is formed at the output of the decoder 6, the number of which corresponds to the "output number of the reference channel of the distributor 2 pulses.

Since the sequence of channel following is known, this allows with 577472

using the power of the multiplexer unit 7, connect the outputs of the distributor 2 pulses to the inputs of the device so that the outputs of the unit 7 of the multi- 5 plexors channel signals are arranged in a predetermined sequence. Block 8 of bit comparison compares the code combinations at the lower and higher bits of the register 5, - 5 L of the shift. Matching code combinations means no synchronization failure. If the code combinations do not match, the level of the logical unit is formed, the signal generated

0

five

0

five

0

five

0

five

The application of the proposed device allows to increase the reliability of the received information by timely detection of synchronization failures and simplify further processing of the received information. Simplification of the information processing algorithm makes it possible to increase the information content of the transmission system.

Claims (1)

Invention Formula A device for receiving information with a time division of channels, containing a receiver, whose input is connected to a communication line, and a pulse distributor, characterized in that, in order to increase the reliability of the received information, an inverter, a block of channel signal comparators are entered into it, the shift registers by the number of combinations from the number of channels by two, the decoder, the multiplexer unit, the bitwise comparison unit, the receiver output is connected to the input of the pulse distributor and through the inverter is connected to the control input of the comparative unit channel signals, whose information inputs are combined with the corresponding control inputs of the shift registers and connected to the corresponding outputs of the pulse distributor, the outputs are connected to the information inputs of the corresponding shift registers, the first outputs of which are connected to the corresponding inputs of the decoder and the corresponding inputs of the first block of parallel comparison , the second outputs are connected to the corresponding inputs of the second group of inputs of a block of bits 313057474 Comparison, the outputs of the decoder of the pulse generator, the outputs are connected to the corresponding address-formation outputs of the device, my inputs of the multiplexer unit, the output output of the block of comparison comparisons whose formation inputs are connected is an additional 1m output set to the corresponding outputs of the distribution j roystva