SU1522219A1 - Device for matching signals in digital systems - Google Patents

Abstract

The invention relates to computing and can be used to interface devices having different levels of logic signals and different information transfer rates. The aim of the invention is to increase the reliability of the device by controlling the output voltage of the power source. The device contains a memory block 1, a trigger 2, an element OR 3, a counter 4, a power source 5, a multiplexer 11, a voltage divider 12, an electronic switch 13, the first and second time relays 14, 15, a source of reference voltage 16 and a block 17 forming the initial position signal. The device provides a serial connection of subscribers with different levels of logic signals while simultaneously changing the power level of the device. 1 hp ff, 1 ill.

Description

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The invention relates to computing and can be used to interface devices having different levels of logic signals and different information transfer rates.

The purpose of the invention is to increase the reliability of the device by automatically controlling the output voltage of the power source.

The drawing shows a block diagram of the device about

The device contains a memory block 1 trigger 2, an element OR 3, a counter 4, a power source 5, an input 6 of the device for connecting the subscriber's information output, an input 7 of the device for connecting the subscriber request output, an output 8 of the device for connecting the subscriber confirmation input for connecting the computer information input, input 10 of the device for connecting the reset output 3BMj multiplexer 11, voltage divider} 2, electronic key 13J first, second time relay 14, 15, reference voltage source 16j signal generation unit 17 a starting position, a power source 5 comprises an integrator 18, an adder 19, a stabilizer 20 and a voltage divider 21 "

The device works as follows.

When the device is turned on, the block 17 generates a pulse, which through the element OR 3 enters the single input of the trigger 2 and sets it to the single state. The zero level from the zero output of the trigger enters the control input of the electronic switch 13, resulting in a closed chain Rj, and R supporting voltage divider 12 and output from the common point of voltage divider 12 (from the output of electronic switch 13) The power supply source input 5, and after a time determined by integrator 18 at the output of power supply 5, will be a voltage equal to the power supply of the external information receiver. As a result, a device for matching signals in digital systems will be matched in amplitude of logic signals with an external information receiver. At the output of the first time relay 14, the high level that goes to the output of the device is about. The unit level at this output is a signal that the device is ready to work with the subscriber. Upon receiving this signal, after turning on the device, the computer must give a signal to the reset input, after whith the device is ready for operation.

The computer must also send a pulse signal to the zero input of trigger 2, which will be transferred to the zero state (electronic key output

13 will be connected to a normally open input), and to the input of counter 4, a unit will be recorded, as a result of which, thanks to multiplexer 11, they will be connected

 the subscriber A1 and the first input resistance R 1 of the voltage divider 12o The input signal from the common point of the voltage divider 12 (output of the electronic key) will go to the control

the input of the power source 5 and through the time determined by the integrator 18, the output of the power source 5 will be the voltage equal to the voltage of the power of the first subscriber, the output of the second

time relay 15 for Vits high level, which goes to output 8.1 of the device. Upon receipt of the latter, the A1 subscriber must input 6.1 code (information package), after which a pulse

signal to enter After removing the Readiness signal from exit 8 "1, the subscriber should have a low level at their outputs (the logic of all

subscribers should be the same). The pulse signal from input 7.1 will go to the input of the recording of the memory block (information from information input b will be written into it) and through the element OR 3 to

the single trigger input 2j which will be transferred to the single state. The zero signal from its zero output will translate the electronic key 13 into the normally closed state,

and the whole device will switch to the supply voltage, equal to the supply voltage of the subscriber. At the output of the device, the readiness signal is received, on receipt of which the computer must read the information from the output information bus and to the inputs of trigger 2 and counter 4 to send a pulse signal. As a result, counter 4 will enter state 2 and the device will be connected to the second A2 subscriber, etc.

Claims (1)

Invention Formula 1, A device for matching signals in digital systems, holding a memory unit, a trigger, an OR element, a counter and a power source, the output of the memory unit being the device output for connecting the computer information input, the counter reset input is the device input for connecting the output sbro 22196 the input of the device for connecting the subscriber's information output i-ro, the first information output 5 of the multiplexer is connected to the information input of the memory block, the second information output of the multiplexer is connected to the recording input of the memory block and the first input of the element OR, the second input and output of which -. not correspondingly with the output of the initial position signal generation unit and with a single trigger input, the single output of which through a computer, zero trigger input is a 15th time relay connected to the output with the input of the device for connecting the output of the computer exchange confirmation, which is characterized by the fact that, in order to increase the reliability of the device by automatically controlling the output voltage of the power source, a multiplexer, a voltage divider consisting of n + 1 resistors, where n is the number of subscribers, the electronic key, the first, the second time relay, the reference voltage source and the initial position signal generation unit, the output of the power source connected to the power inputs of the multiplexer, electronic key, second time relay, memory unit, OR element, trigger and counter, the control input of the power source is connected with the output of the electronic key and with the output terminal of the voltage divider, the closing input of the electronic key is connected with the combined first terminals of the first to the nth resistors of the voltage divider, the second output of the 1st resistor of the voltage divider (, ..., p) connected to the i-th output of the multiplexer, the first information input of which is connected to the output of the reference voltage source and to the first output of the (n + 1) -th resistor of the voltage divider, the second output of which is connected to the disconnecting input of the electronic key, the i-th information input first groups s information multiplexer inputs owner Compiler Editor A Dolynich Tehred A. Kravchuk devices for connecting the computer request input, the zero output of the trigger is connected to the control input of the electronic key and through a second relay time with the second information input of the multiplexer, the i-th output of the output grunt of which is the i-M output of the device for connecting the exchange confirmation input of the i-ro subscriber, the i-th input of the second group of information inputs of the multiplexer is the iM input of the device for connecting the output i-ro subscriber request, meter sync input is the input of the device for connecting the output of the computer exchange confirmation, the outputs of the counter are connected to the control inputs of the multiplexer, 2 o The device according to Clause 1, - tl and -35 hours so that the power source contains an integrator, a cy 5l ma- ter, a stabilizer, and a voltage divider, and control A is the input of the source through an integrator connected to 40 by the first input of the adder, the second input and output of which are connected respectively to the midpoint of the voltage divider and to the control input of the stabilizer, whose input is connected to the input voltage reference of the device, the output of the stabilizer is connected to the first output of the voltage divider and the output of the source, the second output of the voltage divider and the common point of the stabilizer are connected to the tire of zero potential of the device, oburukhin Proofreader T. Papiy