SU1053307A1 - Device for asynchronous input/output of synchronous information - Google Patents

Abstract

DEVICE ASYNCHRONOUS DATA OUTPUT SYNCHRONOUS INFORMATION soderzhststsee on the transmission side connected in series and the control unit start, controlled by a valve, and a memory unit dvoichnodes-particle converter, wherein the third exit start control unit and connected to a control input kndim dvoichnodes adic transducer and the control input of the memory unit, and on the receiving side the starting and controlling unit of the receiving part, as well as serially connected clock generator, controlled by the distribution fir receiving portion and the receiving portion of the memory unit, wherein the control input of the controllable distributor receiving portion connected to the first output start block and the control receiving portion, featuring. This is so that, in order to increase the accuracy of the speed conjugation of two sequences of digital signals, a block for determining the number of elements in the cycle, a storage unit for the forecast program, a block for determining deviation from the forecast, a program correction block, a service information encoder are entered on the transmitting side and a pseudo-random sequence plots formation unit, the first output of the starting and controlling unit being connected to the first control input of the unit for determining the number of elements in the cycle, the second output the start-up and control unit is connected to the first input of the pseudo-random sequence plots formation unit, to the control input of the forecast program storage unit, to the first input of the nporpaiv correction unit and to the second control input of the number of elements block in the cycle, whose service information outputs through the service encoder information is connected to the service information inputs of the block. of forming sections of pseudo-random sequences (O whose information input is connected to the output of the binary from the actual converter, first block output; storage of the forecast program is connected to the first input of the deviation determination unit from the forecast and to the second input of the program correction block, the outputs of which are connected to the correcting inputs of the forecast program storage unit, whose information outputs are connected to the programmed inputs of the service information encoder, the synchronization inputs of which connected to the outputs of the storage unit, the second and third outputs of the storage unit of the forecast program are connected respectively to the third and fourth inputs of the correction unit the program, the fifth input of which is connected to the input of the service information encoder and with the output of the deviation determining unit from the forecast, the second input of which is connected to the output of the unit for determining the number of elements in the cycle, the second and third inputs of the unit for forming pseudo-random sequence sections, respectively, with the third to fourth you

Description

the start and control unit moves, and at the receiving side, a block for receiving pseudo-random sequence sections, a phase analysis block, a program block for the receiving part, a block for storing the prediction program for the receiving part, and a service information decoder are entered, the first output of the starting and controlling block for the receiving part is connected to the first the input of the phase analysis unit, the first input of the reception unit; parts of pseudo-random sequences, the first control input of the program correction block of the receiving part, the control input of the prediction program storage block of the receiving part and with the first control input of the service information decoder, the second output of the start-up and control block of the reception part is connected to the second input of the phase analysis block, second the input of the receiving unit of the pseudo-random sequences of sequences, the second controlling input of the correction block of the program of the receiving part and the second controlling input of the decoder For information, the input of starting and controlling the receiving portion to the first output soedinvn portions receiving unit

pseudorandom sequences.

The touxojtij service information of which is connected to the inputs of the service information decoder, whose information input is connected to the information output of the receiving unit of pseudo-random sequence sections and to the information input of the phase analysis unit, the third input of which is connected to the first output of the service information decoder, the second and third outputs of which through the block correction program of the receiving part is connected to the inputs of the storage unit of the forecast program of the receiving part, the first, second and third outputs of which are connected correspondingly with the first, second and third inputs of the service information decoder and with the first, second and third inputs of the correction block of the program of the receiving part, the fourth and fifth inputs of which are connected respectively to the fourth and fifth outputs of the storage block of the forecast program of the receiving part, clock inputs frequencies are connected to the clock outputs of the service information decoder, the fourth output of which is connected to the control input of the memory block of the receiving part, the information input of which is connected to the output of the block naliza phase. .

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The invention relates to communications and can be used in the acuHxpoHHcSro equipment for input - output of syncronic binary information into digital paths of systems based on pulse code modulation, delta modulation and other digital modulation methods.

A device for asynchronous I / O of binary information in a digital channel is known. It contains a controllable distributor, a memory unit, a phase imperator, a phase encoder, a phase combining sensor, and a receiving unit, a phase decoder, a phase decoder, a phase unit on the transmitting side. frequency auto-tuning, controllable valve and memory block J.

However, the known device is quite economical from the point of view of using the capacity of the communication channel, and as a result, it does not provide high reliability of the pairing of digital sequences.

The closest technical solution to the invention is an asynchronous I / O synchronous information device containing on the transmitting side a serially connected starting and controlling unit, a controlled distributor, a memory unit and a binary-decimal converter, the third output of the starting and controlling unit with the control input of the binary-decimal converter and with the control input of the memory unit, and on the receiving side the starting and controlling unit of the receiving part, as well as sequentially connecting nennye clock generator controlled by a valve receiving portion and ypok memory of the receiving part, wherein the control input is controlled e0 direct distributor receiving portion connected to the first output of the start-up and control the receiving portion t 2 W ..

A disadvantage of the known device 5, asynchronous I / O asynchronous information is that. it is not; provides sufficient reliability of conjugation of digital sequences. The aim of the invention is to increase the reliability of the speed mapping of two sequences of digital signals. The goal is achieved by the fact that the asynchronous input-output device of synchronous information containing on the transmitting side a serially connected starting and controlling unit, a controlled distributor, a memory block and a binary converter, the third output of the starting and controlling unit the input of the binary-decimal converter and with the control input of the memory unit, and on the receiving side the starting and controlling unit of the receiving part, as well as series-connected clock generator frequency controllable distributor of the receiving part and the memory unit of the receiving part, where the control input of the controlled distributor of the receiving part is connected to the first output of the block and control of the receiving part, the unit for determining the number of elements in the cycle is entered on the transmitting side; , a deviation determination unit, a program correction unit, an overhead coder and a pseudo-random sequence section generating unit, the first output of the start-up and control unit with Connected with the first control input of the block, determining the number of elements in the cycle, the second output of the startup and control block is connected to the first input of the pseudo-random sequence section building block, with the control input of the forecast program storage block, with the first input of the program correction block and the second controlling the input of the unit for determining the number of elements in the cycle whose service information outputs are connected to the service information inputs of the pseudo-plots forming unit through the service information encoder Random sequences, the information input of which is: United with you; By the course of the binary-decimal converter, the first output of the block (the storage of the forecast program is connected to the first input of the block for determining the deviation from the forecast and the second input of the program correction block, the outputs of which are connected to the correcting inputs of the storage block of the forecast program, the information outputs of which are connected to programming inputs the service information encoder, the synchronization inputs of which are connected to the outputs of the memory memory, the second and third outputs of the block, as well as the storage of the forecast program, are connected respectively About the third and fourth inputs of the program correction block, the fifth input of which is connected to the input of the service information encoder and the output of the deviation from prediction block, the second input of which is connected to the output of the block of determining the number of elements in the cycle, the second and third inputs of the block for forming pseudo-random sections sequences are connected respectively to the third and fourth outputs of the start and prefix block, and on the receiving side there are entered a block for receiving pseudo-random plots of sequences, phase, the program correction block of the receiving part, the program for storing the prediction programs of the receiving part, and the service information decoder, the first output. the starting block and control unit of the receiving part is connected to the first input of the phase analysis block, the first input of the receiving block of pseudo-random sequence sections, the first control input of the program correction block of the receiving part, the control input of the prediction program storage block of the receiving part and the first control input of the service information decoder the second output of the starting and controlling unit of the receiving part is connected to the second input of the phase analysis unit, the second input of the receiving sections block in pseudo-random sequences, The control input of the program correction block of the receiving part and the second control input of the service information decoder, the input of the activation and activation unit of the reception part are connected to the first output of the reception section of pseudo-random sequences, the service information outputs of which are connected to the inputs of the service information decoder, information input which is connected to the information output of the receiving block of pseudo-random sequence sections and to the information input of the phase analysis block, the third input is This is connected to the first output of the service information decoder, the second and third outputs of which, through the program correction block of the receiving part, are connected to the inputs of the storage unit of the forecast program of the reception part, the first, second and third outputs of which are connected respectively to the first, second and third inputs of the service information decoder and with the first, second and third inputs of the correction block of the program of the receiving part, the fourth and fifth inputs of which are connected: respectively to the fourth, fifth outputs of the program storage block Oz receiving part, the clock generator inputs connected to outputs of the decoder sync overhead information, a fourth output is connected to yn ravl yuschim input of memory reception hydrochloric portion koto cerned information input coupled to an output phase of the analysis block. FIG. L is a block diagram of the Transmitting part of the asynchronous I / O device of synchronous information; Fig 2 is the same as the receiving part of the asynchronous I / O device of synchronous information. The device (FIG.) Contains a memory block 1, a controllable distributor 2, a start and control block 3, a binary-decimal converter 4, a block 5 forming / sections of pseudo-random sequences, a block 6 determining the deviation from the prediction, block 7 determining the number of elements in cycle, block 8 for storing the program of the forecast, block 9 for correcting the program, encoder 1Q of service information. The device (Fig. 2) contains the receiving sections of pseudo-random sequences, the starting block and controlling the receiving part 12, the phase analyzing block 13, the receiving part memory block 14, the receiving part program correction block 15, receiving part prediction program storage block 16, the distributor 17 of the receiving part, the decoder 18 of the auxiliary information, the generator of the 19-stroke frequency. Asynchronous device you. water synchronous information works as follows. Synchronous binary signal (VTS) next with a clock frequency. consequently, according to information cycles, it is introduced into a digital communication channel, characterized by the frequency of the carrier sequence. The information cycles are organized on transmission by reference pulses. The impulses follow with frequency / M, where N is the number of elements in the transmission cycle organized in the channel. The device starts operating at the moment of transmission of the reference and clock pulses in block 3. This coincidence is achieved as a result of preliminary phasing of the receiving and transmitting parts of the device at the beginning of the session. For a given ratio of specified frequencies and f, the number and frequency of changes in the number of elements in the information cycle , which includes a certain number of clock pulses between two-adjacent reference pulses and equal to m, n-1 or n + 1 pulses, is programmed in block 8. Deviation per unit number of elements in the information cycle by nporpaMviHpyeMoft value which occurs due to the relative deviation and frequency or through a constant phase shift and the actual quantified predicted sequences fixed block used. For the operation of this block, binary information is used coming from block 7 and FROM block 8. In the proposed device, the program is corrected in case of a constant phase shift of the actual and quantitatively predicted sequence. Correction functions are performed by program correction block 9, digital signals from block 7 output, signals from block 8 and signals from block 6 output to the corresponding inputs of encoder 10, obr-abatyvalo last / n. The task of encoder 10 is to In order to implement the algorithm of operation of the transferring part of the device, for which, apart from the indicated signals, they additionally use the signals from the nth and (n1) -th cells of block 1. At the outputs of the encoder 10 there are control signals that specify the number used for transmitting the bandwidth and determining s or absence of a phase shift in the phase window. These signals are used by block 5. As a result of comparing the signals in block b, a corresponding signal is generated at the output of the latter, which is sent to the input of encoder 10 and input to block 9. Block 9 is used to perform correction of the prediction program. In other cases, no correction signals not formed. The program correction signals from block 9 are fed to block 8. Control pulses from the third output of block 3 start up a controlled distributor 2, which is a shift register with (n + 1) input. After starting, the controlled distributor 2 is clocked by clock pulses. frequencies f, coming from the first output of block 3; Clock pulses at the outputs of the controlled distributor 2 serve as write pulses of the VTS to block 1. Synchronous binary signals recorded in block 1 at the clock frequency f are read from there by fast clocks pulses (BTI), coming from the third output of block 3 and processed in binary-decimal converter 4. The frequency of the BTI in the binary-ten converter 4 exceeds the channel frequency fj not less than in N pa Binary-decimal converter performs the translation information cycle with a length n of binary code to decimal elements. The resulting number, expressed in the number of VTIR output of the binary-decimal converter 4, is directed to the information input of block 5. Thus, under the action of the BTI and in accordance with the signals from the output of the binary-decimal converter 4 in block 5, the corresponding shift is made PSP, which is used to organize di la Tteredredaci. The reading of the memory bandwidth from block 5 is performed at the carrier frequency f, the communication channel. Pulses of frequency f are sent to block J5 | from the second output of block 3. The length N of the SRP area transmitted to the communication channel can be selected taking into account the need to protect information from one-time errors, if the ratio of the associated frequencies and digital signals allows. The minimum length of the bandwidth bandwidth, based on the recognition condition of the bandwidth bandwidth at the reception, must be set equal to (n + 2) elements for the device in question and equal to (h + 3) elements - to prototype. At the same time, a continuous sequence of elements takes place in the communication channel. Therefore, the remaining - {N- (r1 + 2)} or (N- (n + 3) elements sent to the communication channel during the time between two adjacent reference pulses, in general, can be as corresponding elements of the SRP, as well as service signals, in their structure and essence unrelated to the bandwidth.To increase the accuracy of the matching of digital sequences, these remaining elements are advisable to consider as elements that are a continuation of the corresponding section of the bandwidth (n + 2). the difference of N- (n + 2) j or {N- (n + 3) elements is and Fidelity used at the reception when recognizing PSP sections. At the receiving side, the PSP arrives at the first input of block 11. The signal indicating the number of the received PSP enters the decoder 18. With the received section and recognized at the beginning of a communication session, which encoded special service code combination is a single initial phasing of the reference pulses of the receiving and transmitting sides of the device. After this, unit 12 starts operation. The latter generates reference pulses and fast clock pulses, which are later used in the operation of the receiving part of the device. With the arrival of the PSP that carries useful information, block 1 recognizes and sets the number of the PSP used for transmission. Information about the absolute value of the phase of the received SRP region from the second output of block 1 1 is fed to the first input of block 13. Block 13 converts the absolute phase shift into a binary code combination, eliminating the phase window. The binary code combination obtained at the output of the phase analysis block 13 has a length h and repeats the character ti of information elements on the transmission. The information cycle obtained in binary code, the length of which is equal to n, from the output of block 13 is rewritten at the BTI frequency to block 14, arriving at its first input. A single signal from the exit of the decoder 18 service information is fed to the input of block 14 only in the case when the character of the (n-th) -th element of the information cycle. The transmission was single. If the character of the (n + 1) -th element of the information cycle on the transmission was zero, then the single output signal. decoder 18 service information PA input block 14 is not received, i.e. it remains in its original zero state. The information of the information cycle is read by the consumer from the memory block 14 at the regenerated clock frequency. In both cases, due to the restructuring of the generator 19 in the range between two adjacent reference pulses, it will issue (n + l) clock pulses of frequency g and all (n + l) elements recorded in the cells of the register of block-14 will be read to the consumer at frequency f . If in the information cycle on the transmission there were p. Elements, then only n elements will be read from the register cells (from the second cell in (n + 1) -th), since only n frequency cycles f will arrive from generator 19. . During spilling information cycles, the generator 19 will generate (p-1) clock cycles of frequency f and the consumer will receive (p-1) elements of the information cycle, which will be read from the register cells (from the third cell through (n + 1) -th). To obtain a clock frequency fc, the device uses a controlled valve 17, a generator 19, a decoder 18, and a block 16. When regenerating the clock frequency, a program of the predicted number of elements in the information cycle is used. Laid in block 16, block 16 is a program node in which a program for changing the number of elements from one information cycle to another is stored. A call to this program is made after a single phasing of the device at the beginning of a communication session. For example, for some ratio of matching frequencies f- and such a program can be: n, n, n, n, n, n + l, n, n, n, n + l, n, n, ..., and t .d The following operations are performed at decoder 18: service information decoding to generate spatially separated deviation code signals from the prediction; generating signals controlling the timing adjustment in generator 19; generation of a signal for the elimination of an additional phase shift in the phase window; the selection of the service information (n + 1) -th element and the analysis of its logical nature. As a result of the analysis performed decoderbom; The corresponding signal is fed to the inputs of the generator 19. If the deviation from the forecast during the transition from one information cycle to another is random, then the signal from the first or second outputs of the decoder 18 goes to the first and second inputs of the generator 19, which adjusts the clock frequency limits of the information cycle

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It turned out in such a way that the number of elements in the loop on the receiving side of the device is exactly equal to their number on the transmitting side. The regenerated clock frequency is used to clock the controlled distributor 17, which is triggered by reference pulses from the second output of block 12. Using the controlled distributor 17, block 14 generates at the frequency f a reconstructed synchronous binary signal that is fed to the information consumer. If the deviation from the prediction within the superframe is constant relative to the stuffing (spilling) cycles, then the device continuously shifts the phase of the predicted numeric sequence, and then the receiving part works by using the phase-corrected predicted numerical sequence. The shift is performed by block 15. Similar correction in this case is carried out on the transmitting side of the device by block 9. The proposed device for asynchronous I / O of synchronous information provides for the account optimally. coding gain in the use of a research and development institute of a communication channel capacity in one bit for each transmission cycle, which, in turn, increases the accuracy of the pairing in speed of two digital sequences

Claims (1)

A SYNCHRONOUS INFORMATION I / O DEVICE comprising, on a transmitting side, a start-up and control unit, a controllable distributor, a memory unit and a binary decimal converter, the third output of the start-up and control unit being connected to a control input of a binary-decimal converter and to a control input of a memory block, and on the receiving side, a receiver starting and control unit, as well as a series-connected clock generator, a controlled distributor hydrochloric portion and a memory unit receiving portion, wherein the control input operated valve receiving portion connected to the first output of the start-up and control the receiving part, featuring. In order to increase the reliability of the pairing of the speed of two sequences of digital * signals, a block for determining the number of elements in a cycle, a block for storing the forecast program, a block for determining deviation from the forecast, a block for correcting the program, and a service coder are introduced on the transmitting side information and a block for generating sections of pseudo-random sequences, the first output of the start-up and control unit connected to the first control input of the unit for determining the number of elements in the cycle, the second output of the block start and control is connected to the first input of the block forming sections of pseudo-random sequences, with the control input of the storage unit of the forecast program, with the first input of the program correction unit and with the second control input of the block determining κο- ^ν leaves'.elements in the cycle, the service information of which is output through the encoder service information connected to the service information inputs of the unit for forming sections of pseudo-random sequences, the information input of which is connected to the output in binary decimal. th converter, the first output of the block; of the forecast program storage unit is connected to the first input of the forecast deviation determination unit and to the second input of the program correction unit, the outputs of which are connected to the correcting inputs of the forecast program storage unit, the information outputs of which are connected to the programming inputs of the service information encoder, the synchronizing inputs of which are connected to the outputs of the memory unit, the second and third outputs of the forecast program storage unit are connected respectively to the third and fourth inputs of the program correction unit, the fifth the input of which is connected to the input of the service information encoder and to the output of the prediction deviation determination unit, the second input of which is connected to the output of the number of elements in the cycle determination unit, the second and third inputs of the pseudo-random sequence sections forming unit are connected, respectively, with the third and fourth highsuSU “1053307> block moves launch and control, and administered to the reception side receiving unit portions pseudorandom sequences, phase analysis unit, a correction of the program receiving portion, a storage unit receiving prediction program 'portion and a decoder overhead,' wherein the first unit ¹ output za- start control and the receiving part is connected to the first input of the phase analysis unit, the first input of the receiving unit of the Pseudo-Random Sequence Segments, the first control input of the program correction block of the receiving part, the control input of the unit and the storage of the forecast program of the receiving part and with the first control input of the service information decoder, the second output of the start and control unit of the receiving part is connected to the second input of the phase analysis unit, the second input of the reception unit of the pseudo-random sequence sections, the second control input of the reception program correction block and the second control input decoder service information, the input of the start and control unit of the receiving part. is connected to the first output of the receiving unit sections of pseudo-random sequences ,. the outputs of the auditory information which are connected to the inputs of the overhead decoder, the information input of which is connected to the information output of the reception unit of pseudo-random sequence sections and to the information input of the phase analysis unit, the third input of which is connected to the first output of the de / service encoder! information, the second and third outputs of which are connected to the inputs of the storage unit 'of the forecast program of the receiving part through the correction block of the receiving part program, the first, second and third outputs of which are connected to the first, second and third inputs of the service information decoder and the first, second and the third inputs of the correction block of the program of the receiving part, the fourth and fifth input of which are connected respectively · with the fourth and fifth outputs of the storage unit of the forecast program of the receiving part, the inputs of the clock generator are often s connected to the synchronizing outputs of the decoder overhead, a fourth output is connected to a control input of the receiving part of the storage unit having an information input coupled to an output phase of the analysis block. .