SU1251149A2 - Device for reception and transmission of information - Google Patents

Abstract

The invention relates to telecommunications and can be used in building information transmission systems with a large number of receivers and transmitters connected to a common communication channel. The device operates in the following modes: transmissions from the communication channel to the device address; device performance checks, and is more reliable. The device comprises a receiver 1, a selector unit 2, a selector 3 zero, an element OR 4, a driver of 5 clock pulses, an element OR 6, an element AND 7, a counter 8, a shift register 9, a comparison block 10, a memory block 11, an AND 12 element the element NOT 13, the pulse shaper 14, the counter 15, the information block 16, the unit code shaper 17, the code zero shaper 18, the transmitter 19, the decoder 20 and the communication channel 21. The information block contains the elements AND 22 and 23 element OR 24, the counter 25, the switch 26 and the generator 27 pulses. 1 hp f-ly, 1 ill. "(L to 01 4; o

Description

The invention relates to telecommunications and can be used in information transmission systems with a large number of receivers and transmitters connected to a common communication channel.

The aim of the invention is to increase the reliability of the device.

The drawing shows a block diagram of the device.

A device for receiving and transmitting is similar, when a zero code appears at the output of the selector 2 unit, the potential of a logical zero appears, and at the output of the selector 3 zero a potential of a logical unit appears.

As a result of any elementary parcel containing a code feature entering the device, at the output of an OR-4 element, signals with a level of logical one appear. These pulses come on

the formation contains a receiver 1, a selector 2 10 input shaper 5 clock pulses of a unit, a selector 3 zero, the first element and further to the inputs of the element OR 6 and the counter 15. With the arrival of each new clock 20

OR 4, driver 5 clock pulses, second element OR 6, second element AND 7, first counter 8, shift register 9, unit Yu comparison, memory block 11, first element AND 12, element NOT 13, driver 14 pulses, second counter 15, an information block 16, a unit code generator 17, a zero code generator 18, a transmitter 19, a decoder 20, and a communication channel 21.

The information unit 16 contains the first, second elements AND 22 and 23, the element OR 24, the counter 25, the switch 26 and the generator 27 pulses.

The device works as follows.

After the reception of the code combination at the outputs of the selector 2 units, the selector 3 zero, the elements of OR 4 and 6, the formers 5 and 14 pulses of the set 25

the first pulse, the counter 15 is set to the initial, zero, state. The logical zero level at the output of the counter 15 permits the operation of the counter 8. From the output of the element OR 6, the clock pulses through the open element And 7 arrive at the control (clock) input of the register 9 and the first (counting) input of the counter 8. These pulses record information in the register in accordance with the values of the code received at its informational input and the one-by-one advancement of the previously recorded information, each shift of the clock pulse corresponds to a shift of the number recorded in register 9 by one p d. The counter 8 counts the incoming clock pulses and upon reaching the n-th number of pulses at the output of the potential is a logical

logical zero levels are present. The signal from the unit that enters the inputs of an elelogic zero at the output of the form-maker 14 prohibits the operation of the unit 17 generator of the unit, the generator of the code 18 zero and the information block 16. The signal of the logical zero from the outputs of the imager 5

And 12, the decoder 20 operating mode and the input element NOT 13. From the output element NOT 13 the potential of a logical zero enters the input element 7 And prohibits the passage of clock pulses through it to the second input (35 pulses. At the same moment decoder 20

novki) of the counter 15 and allows the counting of pulses arriving at its first (counting) input from the generator output 27 pulses. When the counter 15 reaches a certain number, an impulse appears at its output, which sets the counter 8 to its initial, zero state. The logical zero signal at the output of the counter 8 is fed to the second input of the element 12 and inhibits its operation, as well as to the input 40

sets its signals at its outputs in accordance with the values of the operating mode code of the local telemechanic center received from the central telemechanic center. Moreover, if a code is received that corresponds to the operating mode, i.e. the transmission from the device to the communication channel 21 of the information parcel from the information sources, then the first and second outputs of the decoder 20 are set to signals from the HE level 13 and sets at its output 45 logical units and logical zero

respectively. If a code is received that corresponds to the device operability test mode in the sub modes Transmission Unit and Transmission Zero, regardless of the sub modes, the first output of the decoder 50 of the switch 20 sets the logic zero level, and the second output - or the level of the logical unit (in the first sub mode ), or the logical zero level (in the second m. submode).

the level of the logical unit, which is allowing for the operation of the element And 7.

This completes the preparation of the device to receive the next code combination.

When receiving a code combination, the signals from the output of the receiver 1 are fed to the inputs of the selector 2 units and the selector 3 zero. When a unit code appears in any bit of a unit, the potential at the output of the selector 2 units becomes the value of a logical unit, and at the output of the selector 3, the logic level of the base unit is maintained. Similarly, when a zero code appears, the potential of a logical zero appears at the output of the selector 2 units, and at the output of the zero selector 3, the potential of a logical unit.

As a result of any elementary parcel containing a code feature entering the device, at the output of an OR-4 element, signals with a level of logical one appear. These pulses come on

the first pulse, the counter 15 is set to the initial, zero, state. The logical zero level at the output of the counter 15 permits the operation of the counter 8. From the output of the element OR 6, the clock pulses through the open element And 7 arrive at the control (clock) input of the register 9 and the first (counting) input of the counter 8. These pulses record information in the register in accordance with the values of the code received at its informational input and the one-by-one advancement of the previously recorded information, each shift of the clock pulse corresponds to a shift of the number recorded in register 9 by one p d. The counter 8 counts the incoming clock pulses and upon reaching the n-th number of pulses at the output of the potential is a logical

units, which is fed to the inputs of the element And 12, the decoder 20 mode of operation and the input element NOT 13. From the output of the element NOT 13 the potential of a logical zero arrives at the input of the element 7 And prohibits the passage of clock through it

sets its signals at its outputs in accordance with the values of the operating mode code of the local telemechanic center received from the central telemechanic center. Moreover, if a code is received that corresponds to the operating mode, i.e. the transmission from this device to the communication channel 21 of the information parcel from information sources, the signals from the level of logical unit and logical zero are set at the first and second outputs of the decoder 20

respectively. If a code is received that corresponds to the device operability test mode in the sub modes Transmission Unit and Transmission Zero, regardless of the sub modes, the first output of the decoder 20 is set to a logic zero level, and the second output - or the logic one level (in the first sub mode) or level of logical zero (in the second m submode).

In comparison unit 10, the signals are compared with the outputs of register 9 and recorded in memory unit 11, which performs the function of storing the conditional address given

device (local point). If the signals match, then a logical unit signal appears at the output of the comparator unit 10, which is fed to the first input of the And 12 element. Since the second input of the And 12 element has a logical one level, a logical one signal appears at its output, which arrives at the first input of the imager 14 pulses and sets on it

output signal of a logical unit. Signal

the logical unit from the output of the pulse former 14 is fed to the first input of the element OR 6, prohibiting the passage of clock pulses from the output of the smart clock 5, as well as to the inputs of the formers 17 and 18 of the unit code, zero and the combined inputs of the counter 25 pulses and information elements 22 and 23 block 16, allowing their work.

The device goes into one of the modes of operation.

In the mode “Work on the second input of the element AND 23 from the first output of the decoder 20, the level of the logical unit arrives, and to the second input of the element OR 24 s

The second output of the decoder 20 enters 25 corresponds to the submodes “Transmitting one-logical zero signal. At the exit of the ele-nits and “Transfer of zeros, respectively.

ment And 23 a logical unit signal appears enabling the operation of the switch

Depending on the level of the signal that arrives at the second input of the OR element 24 from the second output of the decoder 20 mode of operation (logical one and zero), To the communication channel 21 is transmitted To signals with a code sign of one or zero,

26, and element 24 goes to the open state.

Pulses from the generator output 27 pulses arrive through the open element I 22 to the first (counting) input of the counter 25 pulses, the first outputs of which the control unit located at the central point counts the number of pulses received at its input from the communication channel with a 3Q specific code feature . If the number of these pulses is equal to / C, then the device is operational.

Thus, the proposed device for receiving and transmitting information allows, in addition to the operating mode of operation, the unit inventory and the "Transfer of zeros," which increases its reliability compared to the known one.

Claims (2)

Invention Formula the switch 26 operates in the two sub-modes “Alternately connects the output to one of its third inputs, converts the parallel code written on the information inputs information block 19, in sequential. The resulting code through the element OR 24 enters the first inputs of the formers 17 and 18, the second inputs of which receive signals from the output of the gene-i. Device for receiving and transmitting an inrator. 27 impulses, where the corresponding formations by aut. St. No. 1140144, differently encoded. Formed in order to improve the reliability of the unit code and device code 17 and 18, jop code signals were sent to the decoder, the second register outputs are connected to the corresponding inputs of the transmitter 19, the corresponding first inputs are descrambled from its output to the input of receiver 1 and to the rator, the second input of which is connected to communication channel 21, and is sensed by the device output of the first counter, the first and second stations located on the central 50 of the decoder outputs are connected according to paragraph .we but with the third and fourth input information block. 2. The device according to claim 1, characterized in that the information block contains at the second output of the pulse counter 25, a pulse generator, AND elements, the ow element appears a logical one OR pulse, the counter and the switch, the output of the generator. After the switching of the information inputs of the block 16, i.e. after the arrival of K, pulses from the output of the generator 27 pulses, which sets the driver of 14 pulses to the initial zero state. the pulse torus is connected to the first input of the first element AND, the output of which is connected. From this moment, the preparation of the device to receive the next code combination begins. If the signals from the first outputs of the shift register 9 and the memory block 11 do not match, the potential of the logical zero at the output of the comparison unit 10 is saved and blocks the operation of the And 12 element. The transmission of the code message from the first (informational) inputs of the block 16 to the communication channel 21 not produced corresponds to the submodes “Transfer of units and“ Transfer of zeros, respectively. In the test mode, the device operates as described, except for the following. In both sub modes, the second input of the And 23 element receives a logical zero signal. At the output of element 23, a potential of logical zero is established, which prohibits the operation of switch 26 and forcibly sets the potential of logical zero at its output. Depending on the level of the signal that arrives at the second input of the OR element 24 from the second output of the decoder 20 mode of operation (logical one and zero), To the communication channel 21 is transmitted To signals with a code sign of one or zero, corresponds to the submodes “Transfer of units and“ Transfer of zeros, respectively. A device located at a central point counts the number of pulses arriving at its input from a communication channel with a certain code feature. If the number of these pulses is equal to / C, then the device is operational. Thus, the proposed device for receiving and transmitting information allows, in addition to the operating mode of operation, to carry out also the mode of checking its working capacity in two sub-modes “P-i. A device for receiving and transmitting unit intrusion and “Transfer of zeros, which increases its reliability in comparison with the known. implement also the mode of testing its working capacity in two submodes “P i. Device for receiving and transmitting the formula of the invention Also, the test mode in the two sub-modes for reception and the first the torus torus is connected to the first input of the first element I, the output of which is connected 56 Nen with the first input of the counter, the first you are the second input of the second element And the second the counter moves and the output of the second input element of the OR element are respectively connected with the first and second first, second, third and four inputs of the switch, the output of the information input by the commutator of the emitter is connected to the first input of the XJED element OR, the generator output is IMIL, the switch inputs, the combined pulses and the second counter output are the first input of the second element And the second, respectively, the first, second and third the inputs of the first element And the counter, the outputs of the information block.