SU1425778A1 - Device for recording and playback of magnetograms - Google Patents

Abstract

The invention relates to magnetic recording on independent magnetic carriers of signals of spatially separated sources and their synchronous reproduction with the preservation of the phase relationships between them. The goal is to improve the accuracy of reproduction.

Description

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signals by compensating for the BO-temporal distortion frequencies, which ensures the possibility of co-processing the recorded jkoB signal from multi-channel tape recorders | l, 12. The goal is achieved by converting gas blocks 215, 22 signals into digital form. At the same time, the signal of time 13 blocks is used as act pulses. of the same labels that have been subjected to the same test as the test studied themselves.

signals, and the inverse conversion of signals to analog is carried out by blocks 29, 30 using a highly stable pulse generator 28. The device can also be used in cases when the number of information channels exceeds the number of channels of one recorder, providing independent recording of signals to several recorders during the next synchronous playback. 1 silt

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I The invention relates to magnetic recording and reproduction of signals, and more specifically to devices that record multi-channel information on independent tape recorders, spaced apart in p space, providing subsequent playback while preserving the facial relationships between the signals independently recorded by different tape recorders for the last Sample co-processing of recorded signals

The purpose of the invention is to pick up the point of reproduction of signals by compensating for time-frequency distortions.

The drawing shows the functionality - and: a diagram of the device. I A device for recording and co-playback - (the units of the magnetograms contain two identical independent recording paths, each of which contains synchronizers 1 and 2, to the outputs of which are connected. Blocks 3 and 4 converts the parallel code into a successive circuit, divider reset outputs 5 and 6 pulse-following frequencies are connected to the reset inputs of synchronometers 1 and -2, respectively, output 1.1 of highly stable generators 7 and 8 coe, taiHe are, respectively, with clock inputs of dividers 5 and 6 of the pulse frequency, the outputs of which are connected to the first the inputs of elements 9 and 10, the second inputs of which are connected with the outputs of blocks 3 and A. Conversion of a parallel code into a serial output of elements and 9 and 10 are connected with the first inputs

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multichannel tape recorders 11 and 12 whose first outputs are connected respectively to the inputs of timestamp blocks 13 and 14, the first outputs of which are connected respectively to the inputs of blocks 15-18 compared to NIN codes, the codes of the latter are connected to the inputs of And 19 and 20, the second outputs , multichannel tape recorders II and 12 are connected respectively to the information inputs (ADC) of analog-digital converters 21 and 1; 22J information inputs of electronic keys 23 and 24 are connected to second outputs of blocks 13 and 14 of time tagging, information outputs of electronic keys 23 and 24 are connected to clock inputs of A / D converters 2 and 22 and respectively to inputs of clock recording of buffer accumulators 25 and 26, outputs of elements I 19 and 20 are connected to control inputs of electronic kh1mchey 23 and 24 and respectively to the first and second input of the switch of the reading pulse 27, the third input of which is connected to the output of the high stability generator 28 of the pulses n to the clock inputs of the readout of the buffer accumulators 25 and 26 and to the clock inputs of the cyanalog converters (DAN) 29 and 30, the information inputs of the buffer accumulators 25 and 26 are connected respectively to the information outputs of the ADC 21 and 22, and the information outputs of the buffer accumulators 25 and 26 are connected respectively, with information inputs of the DAC 29 and AOR.

1425778

The device is running next preset

Synchrometers 1 and 2 and dividers 5

Before the beginning of the independent phase 6 frequencies. After which the multichannel recording synchronometers 1 and 2 mutually tape recorders 11 and 12 are synchronized with each other. Along with this, the corresponding paths of the independent idle channel are reset, and the dividers are reset to the selected points 5 and 6 of the pulse frequency, the observation. Next, a signal is generated that provides the in-phase writing of the investigated phenomenon to a highly stable sequence of 10 multichannel tape recorders M and a bone of clock pulses in the first and 2, and at the first inputs of these magnetic second independent recording paths, the recordings are mutually synchronous. This highly stable follower and in-phase sync mix signals, and clock pulses arrive. Then tape recorders 11 and 12 are delivered to one of the inputs of elements 9 and 10 15 s at the same place for the coherent first path independent recording of the processing of produced records, in the second, respectively. The second provision of coherent processing (inputs of circuit elements AND 9 and 10 every year of the recorded signals must be sent sequentially to produce a synchronous reproduction of the current time. Serial 20 tape recorders 11 and 12 signals, the current time code is formed from the corresponding inter-parallel code current time, recording time, and, moreover, every second read from the outputs, to provide compensation for frequency-time synchronometers 1 and 2, with the help of falsified distortions caused by non- 3 and 4 conversions are parallel to the uniformity of movement of a magnetic code into a serial corresponding carrier of tape recorders 11 and 12, Synchronously. Blocks 3 and 4 can provide reproducible reproduction provided by, for example, repeating the use of recorded on the first gistra With the parallel input of information channels of tape recorders 11 and 12. Signalization. Thus, one of the inputs of the 30 sync mix. At the same time, the clock pulses of the elements 9 and 10 receive pulses of the synchro mix signal — with a highly stable frequency; EU to compensate for the time-frequency inputs of elements AND 9 and 10 of the input of the distorted recorded analog signal are the successive codes of the current times, and the time codes of the synchro mixes. In this case, if to ensure the issuance of 35, it is used to provide a simultaneous time code with such a reproduction received received frequency equal to the frequency of the high-frequency recordings.

costable impulses arriving: Synchronous reproduction of the osun, the first inputs of the elements And 9oI 10, is realized with the help of two identical

then their outputs are obtained by the signals of the paths of synchronous reproduction

sync mixes, which are you-day. At the same time, the sync signals from the

the sub-stable sequence of the name channels of tape recorders 11 and 12 after-

pulses with the current time entered in this sequence, respectively, at the inputs of the blocking, time codes 13 and 14 for timestamp allocation.

The signals obtained in this way are 45. The last are performed on the basis of

sikhrosmesi from the outputs of the first and second-themes phase-locked loop

independent post-paging paths (PLLs), Blocks 13 and 14 are divided by

ka ka first multichannel entrances to them from tape recorders 11 and

P and 12, with a .12 sync sequence

the remaining inputs are recorded analog 59-pulse pulses and the successive signals of the studied physical accuracy of time codes. In this case, the occurrence. Moreover, although the tape recorders 11, the timing of clock pulses

and 12 kahods ts at various points — the output of blocks 13 to 14 turns out to be

spaces, as their first channels are sensitive to the loss of one

blunt strictly in-phase to synchronous multiple pulses in the original

signals of Sikhrosmesi, Mutual skkfaz synchromesi, considered from the first

bone and synchronous signals of synchro channels of tape recorders P and 12, Taka

a mixture of the first and second paths; non-insensitivity to input-independent recording errors;

the inertia of the PLL system, which determines the high noise immunity of the entire device, From the outputs of blocks 13 and 14, the time codes arrive respectively. inputs of blocks 15, 17 and 16,18 comparison codes. Before the start of playback, the code comparison blocks 15, 17 and 16, 19 add binary codes corresponding to the start and end times of the recording.

The signals from the outputs of blocks 15,17 and 16,18 comparisons of codes come up with "responsibly at the inputs of elements AND 19 and 20. At the same time, at the output of elements And 19 and 20 a signal appears logical I only in that case, at the inputs of blocks Compared to codes, there are binary codes whose value corresponds to the time interval of the recording period. The signal from the output & elements of the elements 19 and 20, respectively, is fed to the control inputs of the electronic keys 23 and 24. The analog inputs of the electronic keys 23 and 24 receive clock pulses from the outputs of the time stamp selection blocks 13 and 14, respectively. Thus, the electronic keys 23 and 24 are open and pass synchronous pulses to their outputs only when the tape recorders 11 and 12 respectively reproduce a signal corresponding to the same time interval during which the recording is made to the magnet. backgrounds. At the same time, the clock pulses of the synchromesh, the passage through the keys 23 and 24 arrive at the clock inputs of the ADCs 21 and 22, as well as the clock inputs of the recording of buffer accumulators 25 and 26, which ensures that signals corresponding to the same temporary interval. The clocking of the ADC and buffer drives is carried out by clock pulses of the synchromesh that have undergone all those

45 scientific research institutes, in it are additionally introduced two paths of independent recording, each of which contains, in series, a highly stable clock generator and a divider.

time-frequency distortions caused by the uneven movement of the magnet- CQ pulse frequency, the carrier, which were superimposed and subsequently connected by a synchronometer on the recorded analog signals read from the information outputs of the tape recorders 11 and) 2 "

After the pulse accumulations are combined in the gg buffer accumulators, the elements x 25 and 26 recorded the signals, the corresponding And, the first input of which is connected

and a unit for converting a parallel code to a serial one, the reset inputs of the synchronometer and the frequency divider

simultaneous reading of information from the buffer

drives, and converting it to

analog form. And when reading buffer drives 25 and 26 and

DACs 29 and 30 are clocked with one and the same by a highly stable generator 28, the switchboard 27 of read pulses ensures that only 28

in the case when, at the outputs of elements 19 and 20, the logic levels change from logical 1 to logical O, t, e, precisely when buffer stores 25 and 26 contain

information corresponding to the same time interval.

Claims (1)

Invention Formula A device for recording and reproducing magnetograms, containing two multichannel tape recorders, a timestamp block, two code comparison blocks, the first AND element, analog-to-digital converter, two buffer n drives, two digital-analog converters, the first and second outputs of the first multichannel tape recorder are connected respectively to the input of the time tag allocation unit and the information input of the analog-digital converter, the first output of the time tag selector is connected with the inputs of the first and second blocks of the comparison of codes whose outputs are connected to the inputs of the AND element, the outputs of the first and second buffer accumulators are connected respectively to the inputs of the first O and the second digital-to-analog converters, characterized in that, in order to improve the accuracy of signal reproduction due to the sensation of time-frequency distortion, it additionally introduces two independent recording paths, each of which contains sequentially connected highly stable clock pulse generator and divider pulse frequency sequentially connected by a synchronometer pulse frequency sequentially connected by a synchronometer and a unit for converting a parallel code to a serial one, the reset inputs of the synchronometer and the frequency divider The input to the output of the parallel code to serial conversion unit and the second input is connected to the output yes pulse frequency generator, inputs of AND elements of the first and second independent recording paths are connected respectively to the first inputs of the first multichannel second magnetophones, the second block of time stamping, the second and fourth blocks of the code comparison, the second And element, two electronic keys, the second analog go-digital converter, read pulse switch, highly stable pulse generator, and and the second electronic keys, the control panel of which the inputs are connected respectively to the outputs of the first and second I elements, and the information outputs of the electronic keys are respectively connected to the clock inputs of the first and second analog-to-digital converters and, respectively, to the clock inputs of the first and second buffer drives, the outputs of the first and second analog-to-digital converters are connected respectively to the information inputs The first and second outputs of the second multichannel tape recorder are connected by accumulatively 15 first and second buffer accumulators to the input of the second block of the terminal, the first and second inputs of the switch for timestamp switching and to the information input of the second analog-digital converter, the first output The read pulse ratios are connected to the outputs of the first and second elements, respectively, and the third input the second block of the allocation of time non-2o connected to the output of a highly stable the current is connected to the inputs of the third and fourth blocks of code comparison, the outputs of which are connected to the inputs of the second element And, the second outputs of the first and second blocks of the allocation of timestamps are connected respectively to the information inputs of the first and the second electronic keys, the control panel of which the inputs are connected respectively to the outputs of the first and second I elements, and the information outputs of the electronic keys are respectively connected to the clock inputs of the first and second analog-to-digital converters and, respectively, to the clock inputs of the first and second buffer drives, the outputs of the first and second analog-to-digital converters are connected respectively to the information inputs the first and second buffer accumulators, the first and second inputs of switches the first and second buffer accumulators, the first and second inputs are switched The read pulse ratios are connected to the outputs of the first and second elements, respectively, and the third input A pulse generator, the output of the read pulse switch is connected to the clock inputs of the first and second digital-to-analog converters and to the clock inputs of the first and second buffer drives.