SU993320A1 - Device for digital magnetic recording-reproducing of measurement information - Google Patents

Description

(54) DEVICE FOR DIGITAL MAGNETIC RECORDING OF MEASURING INFORMATION

The invention relates to magnetic recording, in particular, to devices for digital magnetic recording-reproduction of measurement information.

A device for magnetic recording and reproducing measuring information is known, which contains a delta module, a voltage-to-discharge counterbalance converter connected to a mixer associated with a pulse generator and a BAN element, a recording-playback unit connected to a register associated with a descrambler. and a pulse distributor, the outputs of which are connected to the elements And 1.

The disadvantage of this device is to limit the spectrum of the input signal, reduce the bandwidth of the magnetic recording and playback path, and the reproduction accuracy of the measurement information is not high enough.

It is also known a device for magnetic recording-reproduction of measurement information, containing an input bus connected to the first in-strokes of a delta modulator and a converter. an increase in voltage generator code, the second inputs of which are connected to the generator I1 pulses, and their output through the series-connected element BAN, modulator, recording-playback unit, demodulator ;;:, the distributor - to the reversible counter, connected through the unit, the key and the counter to the delay element and the second BANGE element connected to the outputs of the demodulator-distributor 10 f 2,

A disadvantage of the known device is a considerable time setting up the process and not enough high fidelity

15 measurement information when exposed to noise.

The purpose of the invention is to increase the reliability of the reproduction of measurement information when exposed to

20 interference

This goal is achieved by the fact that the device for digital magnetic recording-reproduction of measurement information contains an input 25 bus connected to the first inputs of the delta modulator and the increasing voltage converter into a code, the second inputs of which are connected to the pulse generator, and the outputs 30 connected to the inputs of the first element

BAN, the OUTPUT of which is connected to the demodulator-distributor through the serially connected modulator and the recording-playback unit 1. The first, second and third outputs of which are connected respectively to the first, second and third inputs of the reversible counter, the outputs of which are output to devices / serially connected first delay element, second BANNER element, first counter and first key block, second delay element connected in series, third BAN element, second counter and second key block , the outputs of the first and second delay elements are connected to the second inputs of the first and second counters, respectively, the inputs of the first and second delay elements are connected to the synchronization outputs of the demodulator-distributor and the control inputs of the first and second key blocks, respectively, the second inputs of the second and third BANNERS connected to the second output of the demodulator of the distributor, the converter of the reduced voltage is introduced into the code and the OR element, the inputs of which are connected to the outputs of the first and second o blocks of keys, and the outputs are connected to the information inputs of the reversible counter, the first and second inputs. The converter of the decreasing voltage to the code is connected respectively to the input bus and the pulse generator, and the output is connected to the third input of the first, the BAN element, the third inputs of the second and third BAN elements are connected respectively to the inputs of the third and second delay elements.

This reduces the time of the established process under the influence of interference.

FIG. 1 shows a block diagram of one of the possible variants of the device. For digital magnetic recording-reproduction of measurement information / a. FIG. 2 - time diagrams of the work of the device.

The device for digital magnetic recording-reproduction of measurement information contains an input bus 1 connected to the first inputs of the Elta-modulator 2 and the converter 3 of increasing voltage. the code whose inputs are connected to the 4-pulse generator, and the outputs are connected to the inputs of the first BAN 5 element, the output of which through sequentially connected modulator 6 and lock 7 of the recording-reproduction is connected to the demodulator-distributor, the first, second and third outputs are costly connected according to

the first, second and third inputs of the reversible counter), the outputs of which are the outputs 10 of the device, connected in series the first delay element 11, the second BANE 12, the first counter 13 and the first key block 14, connected in series the second delay element 15, the third BAN 16 second counter 17 and second block 18

0 keys, the outputs of the first and second delay elements 11 and 15 are connected to the second inputs 1 and the first and second counters 13 and 17, respectively, the inputs of the first and second delay elements 11 and 15 are connected to the synchronization outputs of the distributor demodulator 8 and the control inputs respectively the first and second blocks 14 and 18 keys, the second inputs of the second and third elements of the prohibition 12 and. 16 are connected to the second output of the demodulator-distributor 8.

In addition, the device contains a converter 19 decreasing

5 voltages in the code and the OR element 20, the inputs of which are connected to the information outputs of the first and second blocks 14 and 18 of the keys, and the outputs are connected to the information inputs of the reversible counter 9, the first and second inputs of the converter 19 of the decreasing voltage being connected to the code - the input bus 1 and the generator 4 pulses, and the output is connected to the third input of the first element BANE 5 ,. the third inputs of the second and third elements BANKS 12 and 16 are connected respectively to the inputs of the third and second delay elements 11 and 15.

The device operates as follows in accordance with the timing diagrams, shown in FIG. 2

When entering the input bus

1 measurement information delta-modulator 2 goes to the p & ample monitor for the measurement information signal. FIG. 2a to T, respectively, the tracking process is shown in the form of a step voltage Ug, and an incremental code at the output of the delta modulator 2. The process of scanning the converter 3 of the increasing voltage into the code is shown in FIG. 2a in the form of stepwise injection, and the process of transformation of the transform, tel. 19 of the decreasing voltage to the code — in FIG. 2d in the form of a step voltage: U. At the time points corresponding to the end of the converter 3 forming the increasing voltage into the code, the output signal of the increment of the first BAN 5 is prohibited and the increment signal is generated; A marker signal K (Fig. 2d).

Claims (2)

The time points corresponding to the end of the formation of the converter 19 of decreasing voltage in the code, on the output of the first, the element of BANCH 5, the increment signal is inhibited and the marker signal H is generated (Fig. 21). FIG. 2ff "shows the marker pulses M and M-i., And in FIG. 2d and e show the sequence of pulses proportional to the signal of the measuring information. The signal from the output of the first element BANGE 5 is converted by the modulator 6 into a form suitable for recording and reproducing the recording-reproducing unit 7. At the outputs of the demodulator-distributor 8, the marker pulses M and M are formed, as well as the addition pulses (+), the clock pulses and the subtraction pulses (-) of the vMeHTHoro code. In the initial state, the first counter 13 is set to the zero state, and the second counter 17 is set to the common state. With the coincidence in time of the marker pulses H and MI. In the reversible counter 9, one of the blocks 14 or 18 records information from the counters 13 and 14. Then, the counter. 9 counter operates on increment codes. The first counter 13 counts the number of clock pulses and marker pulses M before the arrival of the next marker pulse Mi, with the arrival of which through the information element OR 20 from the outputs of the first key block 14 is written into the reversible counter 9, the marker pulse M sets the first meter 13 to the original condition. The second counter 17 performs the deduction of clock pulses and marker pulses M before the arrival of the next marker pulse M., from which the information from the outputs of the second counter 17 through the second block of .18 keys and the OR element 20 is written into the reversing counter 9, the marker pulse Mi sets SECOND counter 17 to the initial state. At the outputs of the reversible counter 9, a parallel code is formed from the incoming incremental code. While the marker signals M and M are simultaneous with B1 enk, the increment code values are corrected by rewriting the information of the first counter 13 with the arrival of the marker pulse M and rewriting the information of the second counter 17 with the arrival of the marker pulse Mj through the element OR 20 into the reversible counter 9. This is done periodic correction of measurement information signals eliminates errors from the accumulation of received signal failures, which occur as a result of interference and short interruptions in information reception. The use of the invention allows to significantly improve the accuracy of the reproduction of measurement information under the influence of interference and short interruptions in the reception of information. Apparatus of the Invention: A device for digital magnetic recording of reproducing: measurement information containing an input voltage connected to the first inputs of a delta module and a voltage increasing converter into a code, the second inputs of which are connected to a pulse generator, and the outputs are connected to the input of the first element, the output of which is connected through serially connected modules the torus and the block of reproduction is connected to the demodulator-distributor, the first, second and third inputs of which are connected respectively to the first , the second and third inputs of the reversible counter, the outputs of which are the output of the device, are connected in series the first delay element, the second BAN element, the first counter and the first key block, the second delay element connected in series, the third BAN element, the second counter and the second key block, The first and second delay elements are connected to the second inputs of the first and second counters, respectively; the inputs of the first and second delay elements are connected to the synchronization outputs; demodulator a-distributor and control inputs, respectively, of the first and second key blocks, the second inputs of the second and third BANKS elements are connected to the second output of the distributor demodulator, exc and. This is so that, in order to increase the reliability of the reproduction of the measurement information, a transformation was introduced into it. The receiver of the decreasing voltage is the code and the OR element, the inputs of which are connected to the outputs of the first and second key blocks, and the outputs are connected to the information inputs of the reversible counter, the first and second inputs of the converter of the decreasing voltage to the code are connected respectively to the input bus and the pulse generator and the output is connected to the third input of the first BANNER element, the third inputs of the second and third BANNER elements are connected respectively to the inputs of the third and second delay elements. Sources of information taken into account during the examination 1. The author's certificate of the USSR 801047, cl. G 11 B 5/00, 04/20/19. 2. The author's certificate of the USSR 866735, cl. H 03 K 13/22, 18.01.80 (prototype). 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