SU1298940A1 - Device for selecting channels - Google Patents

Abstract

The invention can be used in receiving equipment of communication systems and provides for an increase in the accuracy of selection. The device contains input channels, a block of parallel-writing registers, OR elements, output channels, triggers, a saw-tooth voltage generator, a comparator, AND elements, counters, and a sequential-write register. The device allows you to select not only one channel with an extreme average voltage, but also to choose m from n channels with extreme voltage. 2 Il. u 00

Description

Invention otnoshhgts. to the field of radio communication and can find the use of receiving system sistem.vis communication.

The aim of the invention is to increase the accuracy of the selection.

FIG. 1 and 2 depict a device structured electrical circuit.

The device contains input channels 1, block 2 of parallel record registers, the first element OR 3, the output 12 channels 4, the first trigger 5, the general parallel rator 6 sawtooth voltage, the second element OR 7, the third element OR 8, comparator 9, the first element And 10, the second element And 11, the first counter 1.2, the register 13 sequential write, the second counter 14, the third element And 15, the quarter element And 16 and the second trigger 17, each input channel contains a key 18, 20 comparator 19 and trigger 20, and each output channel contains an element And 21 and trigger 2 2

The device works as follows 25 times.

The keys 18 connect for the time of analysis of the channels the inputs of the device with the first inputs of the comparator 19. The linearly varying voltage is supplied to the second inputs of the comparators 19 from the sawtooth generator 6. Triggers 20 are used for short-term memorization of channels with extreme mean voltages. Block 2 of parallel record registers is designed to memorize channel numbers with extreme voltages each time the comparators 19 trigger. First trigger 5 starts generator 6 of sawtooth voltage and opens keys 18 for a time. The second element OR 7 forms the reset pulse of the flip-flops 20 and the rewrite pulse of the block 2 of the parallel-write registers. The comparator 9 is triggered by decreasing the output voltage of the sawtooth generator to a certain level. The second counter 14 counts m single signals. The first counter 12 performs the clock pulses recalculation modulo p. In the sequential write register 13, an n-bit combination is written from the output of the last register of the block 2 parallel register registers via an And 16 element. The second trigger 17 serves to capture the moment of reading m single signals from the 30

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The course of the sequence of the pairs of elements and the strokes of the recording of the post 1 trigger 10 provide the pulses at the entrance of the investigator of the first torus 9.

When the device starts up the recording and recording, tr 17, re, and 14 install, their first 6 pilots back and their first

The voltages of the device 18 are sent to tori 19. 19, under voltage, equal to parator 1, the input pulse trigger 20, the trigger trigger OR 13 registers are received, which are separate for the comparator

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When ss how many tons of signal 1 (or registers gy, the first and in the triggers of the 2nd state of the generator continues

chikov 12 and parallel

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the progress of the last register of block 2 registers of parallel recording. Through the elements And 21 single signals from the outputs of the register 13 sequential recording are fed to the inputs of the installation 1 of the flip-flops 22. The first element And 10 provides the passage of clock pulses from the clock input of the device to the inputs of the first and second counts-14, block 2 of the registers of the recording and the register 13 sequential recording after the triggering of the first trigger 5 and the comparator 9.

When a short start pulse arrives at the control input of the device, block 2 of the parallel recording registers and register 13 of sequential writing, triggers 20 and 22, second trigger 17, first and second counters 12 and 14 are set to zero, the trigger pulse from the output of the first trigger 5 starts the generator 6 sawtooth voltage, enters the second inputs of the keys 18, opens them and enters the first input of the first element And 10.

The voltages from the information inputs of the device through the open keys 18 are supplied to the first inputs of the comparators 19. The second inputs of the comparators 19 are supplied with linearly varying voltages from the output of the generator 6 of the saw-tooth voltage. At the time when the voltages are equal, a short pulse is generated at the inputs of the comparator 19 in one or several input channels 1, which sets trigger 20 (flip-flops 20) to one state, while the pulses from the flip-flop outputs 20 through the second element OR 7 and the third element IL 8 arrive at the clock inputs of the block 2 registers of parallel recording and register 13 sequential recording, which are set to parallel recording signal O from the output of the comparator 9.

When one or several triggers 20 are triggered, the signal 1 is recorded at the corresponding bit (or the corresponding bits) of block 2 of the parallel record registers and the first and second elements OR 3 and 7 of the flip-flops 20 are set to the zero state. The voltage at the output of the sawtooth voltage generator 6 continues to decrease and

the triggering of the comparators 19 and the triggers of 20 other channels and the recording of the signal 1 into the first register of the parallel recording unit 2, from which information is. recorded from the previous triggering trigger 20, is rewritten into the second trigger of block 2 of the parallel recording registers. During the subsequent triggers of the flip-flops 20, the information is successively advanced in the registers of the block 2 of the parallel-writing registers. At the time when the output voltage of the sawtooth-voltage generator 6 becomes equal to the specified level (in the particular case equal to zero), the comparator 9 triggers. the output of the comparator 9 a single signal is fed to the control inputs of the block 2 of the registers of parallel writing and the register 13 of sequential recording and transfers them from the parallel recording of information to the mode of careful reading of information.

Under the influence of clock pulses from the clock input of the device, coming through the first element AND 10 and the third element OR 8 to the clock inputs of the block 2 of the parallel recording registers and the register 13 of the sequential recording, information from the input of the last bit of the block 2 of the parallel recording registers through the elements AND It and 16 are fed to the first input of the register 13 of sequential recording, respectively, where the information is recorded sequentially. The first counter 12 to make the counting of clock pulses. After every cycle, a single signal from the output of the first counter 12 is fed to the second inputs of the And 21 elements and single signals from the outputs of the register 13 of sequential recording through the And 21 elements are fed to the installation inputs 1 of the corresponding flip-flops 22, with the result that single signals

When the 14th signal of a single signal arrives at the second counter, the second trigger 17 is set to one and the signal from its output at the moment when the second counter 14 outputs a single signal through the second element And 11 sets the first trigger 5 to the zero state and clocked pulses from the clock input of the device through the first element And 10 do not pass. A single signal (from the output of the register 13 of sequential recording) corresponding to the th channel with extreme mean voltage, through the element And, 21 sets the corresponding trigger 22 in one state. This completes the process of selecting m channels with extreme average voltages.

Consider the choice of m channels with extreme stresses from n channels with a specific example.

To frighten n channels has different levels of tension, and n- equal levels.

In this case, from the third element OR 8, n-1 + 1 pulses will arrive at the clock input of the block 2 of the registers of parallel recording for parallel rewriting of information. At the point in time when the output voltage of the sawtooth voltage generator 6 reaches the set level (which in the simplest case can be zero), information on the number of channels with the highest voltages is sequentially read. The second counter 14 captures the moment of reading the information about the m-channel, as a result of which only m channels with extreme average voltages appear at the outputs of the device.

The technical advantage of the present invention is to increase the selection accuracy, since it allows not only choosing one channel with extreme medium voltage, but also choosing from n channels with extreme voltages, which will make it possible to decide on the most reliable signals and thereby increase the reliability of the received information in communication systems.

Claims (1)

Invention Formula A channel selection device containing the first, second and third OR elements, the first trigger connected in series and the sawtooth generator, as well as the input channels, each of which contains a key connected in series, a comparator and a trigger, and the output of the first trigger connected to the key each input channel, the output of the sawtooth generator is connected to the second input of the comparator of each input channel, the output of the first element OR is connected to the second input of the trigger one in the input channel, the trigger outputs of all input channels are connected to the inputs of the second element OR, and the signal input of the key of each input channel is the information input of the device, the trigger input of which is the first inputs of the first trigger and the first element OR, output channels, serially connected comparator, first AND element, first counter and second AND element, serially connected block of registers of parallel writing, third AND element, The second counter, the second trigger, the fourth And element and the sequential write register, the outputs of which are connected to the first inputs of the output channels, each of which contains the successively connected And element and the trigger, whose input is the output of the output channel, the first and second inputs of which The first and second inputs of the element, respectively. At the same time, the output of the first element OR is connected to the second inputs of the flip-flops of other input channels. The output of the flip-flops of all input channels is connected to the information inputs. Dam block parallel registers, the output of which is connected to the second input of the fourth element AND, the output of the second element OR is connected to the second input of the first element OR and the first input of the third element OR, the second input of which is connected to the output of the first element AND and the second input of the third element AND, the output of the first counter is connected to the second input of each output channel, the output of the third element OR is connected to the clock inputs of the block of parallel record registers and the sequential write register, the second output is second The trigger is connected to the second input of the second element I, the output of which is connected to the second input of the first trigger, the output of which is connected to the second input of the first element I, the output of the sawtooth voltage generator is connected to the first input of the comparator, the output of which is connected to the control inputs of the block of registers parallel , records, the installation inputs of which, as well as the installation inputs of the first counter, the second inputs of the second trigger and each trigger of the output channel are connected to the triggering input of the device controlling The m and clock inputs of which are, respectively, the second input of the comparator and the third input of the first element AND, and the device outputs are the outputs of the output channels. (rigg Compiled by O.Andrushko Editor L.Gratillo Tehred A.Kravchuk Proofreader M.Demchik Order 901/61 Circulation 639Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4