SU896784A1 - Discrete information transmission device - Google Patents

Description

(54) DEVICE FOR TRANSFER OF DISCRETE INFORMATION

The invention relates to automation and computer technology. A device for transmitting discrete information is known, comprising on the side of the generator a temporary signal and a serially connected information source, a distributor, a CM element, a pulsed indication unit and a interface with a communication channel are transmitted, one output of the time signal generator being connected to the corresponding inputs the distributor and the unit of formation of a pulse sign, on the receiving side - serially connected interface unit with a communication channel, the fixing unit of the pulse characteristic, p distributor and execute unit 1. However, in the known device is not sufficient reliability and speed of transmission. The purpose of the invention is to increase the reliability and speed of information transfer. This goal is achieved by the fact that a device for transmitting discrete information, containing on the transmitting side a time signal generator and serially connected information source, a distributor, an OM element, a pulsed feature generating unit, and a interface unit with a communication channel, one output of the time signal generator with the corresponding inputs of the distributor and the formation unit of the pulse characteristic, on the receiving side - serially connected interface unit with the communication channel, the fixer unit and an impulse tag, a distributor and an execution unit, are added on the transmitting side an adder and a comparison unit, with one output of the interface block with a communication channel connected to the first input of the comparison unit, the second input of which is connected to the output of the OR element and one input of the adder, The other code of which is connected to the output of the comparison unit and the additional input of the unit to form a pulsed sign, the output of the adder is connected to one input of the information source, the other input of which is connected to another output of the generator Signals whose input is connected to another output of the interface unit with a communication channel, a shaper, an adder and a code selector are entered at the receiving side, one input of the interface unit with a communication channel being connected to the second output of the pulsating feature fixing unit, another input - with the driver output, the first, second and third inputs of which are connected respectively to the input of the distributor, the output of the adder and one input of the execution unit., the output of the code selector connected to another input of the execution unit The output of the distributor is connected to the input of the code selector and one input of the adder, the other input of which is connected to the third output of the pulsator feature fixing unit. In addition, the pulse character fixing unit consists of a timer, the first output of which is connected to one input of the first element I, the second output is connected to the first input of a trigger, the second input of which is connected to the output of the first element I, and the output of the trigger is connected to one input of the second element And, the other input of which is connected to another input of the first element AND is the input of the fixing unit, a pulsed feature, the first, second and third output of which is respectively the output of the second element that is AND, the third and fourth output s Thai resort. The drawing shows a structural electrical circuit of the proposed device. The device contains on the transmitter side information source 1, distributor 2, element OR 3, pulsed characterization unit 4, interface unit 5, communication channel, time signal generator 6, summator 7 and comparison unit 8, on the receiving side - a pulsed indication fixing unit 9, a communication unit with a communication channel 10, a distributor 11, an executive unit 12, a driver 13, an adder 14, a code selector 15, a block 9 consists of a timer 16, an And 17 element, a trigger 18 and an And 19 element. The device works as follows. To the input of the generator 6 time signals are received through the blocks 5 and 10 of the conjugation with the communication channel, clock pulses from timer 16. Generator 6 (time signals form a signal permitting the selection of information from source 1 of information at a certain time, and the clock frequency signal arriving at the clock inputs of the distributor 2 and the pulsed indication unit 4. The distributor 2 divides the clock frequency and, together with the OR element 3, converts the parallel information code into a serial one, which represents It is a pulse of duration equal to the period of the clock frequency of the time signal generator 6. The sequential code of information from the output of the element OR 3 is fed to the input of the adder. 7 is summed, and the result of the summation is fed to the input of the source 1 and is transmitted to the communication channel at the end of the message for comparison with the checksum generated on the receiving side of the received message. In addition, the serial code of information from the output of the element OR 3 goes to the first input of the comparison unit 8, the second input of which the response information is generated on the receiving side. The response signals occupy the second half cycle of the clock frequency. The generator 6 time signals, i.e. each bit of information is transmitted to the communication channel in the first half period, and the response information bit is received from the communication channel in the second half period of the clock frequency. If in the process of transmitting information at the output of the comparator unit 8 a mismatch signal is generated, then the totalizer 7 is blocked. In addition, the blocking signal acts on the pulse pattern generation unit 4, which in the information sequence generates all single signals that are perceived by the code selector 15 on the receiving side as a transmission failure, blocking the execution unit 12 and the response generator 13. In this case, blocking also occurs when the checksums in the adder 14 do not match, and the transmitting side repeats the transmission of information in the same sequence. In the case of correct transmission, the information code from the output of the communication interface unit 10 is fed to the input of the pulsed feature fixing unit 9, recognized by the distributor 11 from the serial to the parallel-serial code that goes to the first input of the adder 14 and the CODE selector 15 to control the information. Information pulses from the output of block 9 fixation of the impulse feature are fed to the input of the imager

13 are delayed and transmitted to the communication channel in the second half period of the clock frequency of the time signal generator 6 for comparison on the transmission side.

In block 9 of fixation of the impulse feature, trigger 18, together with element 17, element 19, allow information to pass to executive side 12, timer 16 synchronizes the start and end of the transmission, determines the time to compare checksums in the adder

14, and also generates. Tact pulses arriving via the communication channel to the transmitting side.

Thus, a device for transmitting discrete information allows, with high reliability and speed, to transmit discrete information over a wired link.

Claims (2)

1. A device for transmitting discrete information, containing on the transmitting side a time signal generator and a series connected information source, a distributor, an OR element, a pulsed-priziak formation unit and a conjugation link with the communication channel, one output of the real signal generator being connected to the corresponding inputs of the distributor and the pulsed formation unit, on the receiving side - the serially connected interface unit with the communication channel, the pulsed characteristic fixing unit, a divider and an execution unit, characterized in that, in order to increase the reliability and speed of information transfer, an adder and a comparison unit are inputted on the transmitting side, with one output of the interface unit connected to the first input of the comparison unit, the second input of which is connected to output of the OR element and one 9 the adder's input, another KOTO-I pogo input is connected to the output of the comparison unit and the auxiliary input of the pulsed formation unit; the adder's output is connected to one input of the information source, the other input of which is connected to another output of the time signal generator whose input is connected to another the output of the interface unit with the communication channel 0, on the receiving side, the introduction of a driver, an adder, and a code selection. a torus, with one input of the interface unit with a communication channel connected to the second output of the fixation unit by the PULSE5 characteristic, the other input to the output of the former, the first, second and third codes of which are connected respectively to the input of the distributor, the output of the adder and one input 0 of the execution unit, the output of the coded selector connected to another input of the execution unit, the output of the distributor connected to the input of the code selector and S one input of the adder, the other input of which is connected to the third output of the fixing unit pulse pulse mark. e 2. The device according to claim 1, characterized in that the pulsator feature fixing unit consists of a timer, the first output of which is connected to one input of the first element And, the second output is connected to the first input of the trigger, the second input of which is connected to the output of the first element And and the trigger output is connected to one input of the second element AND, the other input of which is connected to the other input of the first element AND and is the input of the pulsed feature fixing unit, the first, second and third output of which is respectively the output of the second element And, third, and fourth outputs of the timer. Sources of information taken into account in the examination T. Copyright certificate СJCP fP 598264, cl. H 04 L 17/00, 1976 (prototype).