SU1040522A2 - Digital magnetic recording equipment checking device - Google Patents

Abstract

DEVICE FOR THE CONTROL OF EQUIPMENT OF THE DIGITAL SURVEY OF MAGNETIC RECORDING. St. No. 754472, characterized in that, in order to enable statistical control of the amplitude and fwso parameters of a digital signal, post-successively connected, an analog-code converter, an additional element And an additional trigger, as well as a computing unit are introduced into it, and the first input is an additional three Hera is connected to the output of the peak detector and the second input of the additional element And, the second input of the additional trigger is connected to the third input of the additional element And and the combined inputs The first and second elements P second:: the analog-code converter input is connected to the input of the peak detector, the third is connected to the forward output of the second trigger of the time interval selector, and the output is connected to the corresponding input of the statistical analyzer; 1) of the block are connected respectively (L o with the second inputs of the first and second comparators, the third output, the first and BTOpcrft inputs of the computing block are connected respectively to one of the inputs of the statistical analyzer, control For the best input Read, input and output of the statistical analyzer.

Description

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The invention relates to magnetic recording, in particular to devices for KOH as a role of digital magnetic recording apparatus.

According to the main author. St. No. 754472, a device for controlling digital magnetic recording equipment is known, a social trigger, the first input of which is connected to the device input through a peak tsetektor, and the outputs are connected via serially connected one of the elements AND the OR element and the time converter code to one of the following: statistical analyzer, another input of which is connected to the output of the selector of time intervals, the second input of the converter - the code and the combined inputs of the elements AND, the third inputs of which are connected to the outputs of the second trigger se a time interval lecturer, comprising, in addition, a serially connected counter and a first comparator, and a second to 4parator serially connected, a first trigger and a delay element, the counter being connected to the inputs of a C11 trigger.

However, the device allows to perform statistical parameters only in the time domain, and does not allow statistical analysis of the amplitude parameters of the signal.

The purpose of the invention is to provide the possibility of statistical control of the amplitude and phase parameters of a digital signal.

In order to achieve this goal, serially connected analog-code converter, additional And element and additional trigger, as well as a computing unit are entered into the device for controlling digital magnetic recording equipment, with the first input of the additional trigger connected to the output of the peak detector and the second input of the additional element And the second input of the additional trigger is connected to the third input of the additional element AND and the combined inputs of the first and second elements AND, the second input is converted The analogue code detector is connected to the input of the peak detector, the third is connected to the direct output of the second trigger of the time interval selector, and the output is connected to the corresponding input of the statistical analyzer, the first and second outputs of the computing unit are connected respectively to the second inputs of the first and second comparators, third exit

The first and second inputs of the computational block are connected respectively to one of the inputs of the statistical analyzer, the control input Read, the input and output of the statistical analyzer.

The drawing shows a block diagram of a device for monitoring digital magnetic recording equipment (one of the possible variants).

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A device for monitoring a digital magnetic recording apparatus comprises a first trigger 1, the first input of which is connected via peak detector 2 to information input 3 of the device,

5 time converter 4 is a code connected between the output of the element OR 5 and one of the inputs of the statistical analyzer 6, the first and second elements AND 7 and 8, the outputs of which are connected to the inputs of the element OR 5, and the first inputs are connected respectively to the inverse and direct the outputs of the first trigger 1, and the combined inputs of the first and second elements And 7 and 8 are connected to

5 second input of the time converter 4 - the code and one of the inputs of the statistical analyzer 6, the serially connected counter 9 and the first comparator 10, serially connected

0 a second comparator 11, a second trigger 12, and a delay element 13 sequentially connected to an element AND 14 and a third trigger 15, included in the selector 16 time slots, with

5 of this, the first input of the counter 9 is connected to the output of the peak detector 2 and the second input of the delay element 13, the second input of the counter 9 is connected to the output of the first comparator 10, the third input

0 counter 9 is connected to the second input of the first trigger 1 and the control input Read, the output of the counter 9 is connected to the first input of the second comparator 11, the output of the delay element 13

5 is connected to the second input of the second trigger 12, the output connected to the first input of the element 14 and the second input of the converter 4 time — the code, the second inputs of the first and second comparators 10 and 11 are connected to the second inputs of the element 14 and the third trigger 15, direct and the inverse outputs of which are connected to the corresponding inputs of the first and second elements And 7 and 8,

5 additionally contains an analog-code converter, an additional element I 18, an additional trigger 19 and a computing unit 20 in series, the first input of an additional trigger 19 connected to the output of the peak detector 2 and the second input of an additional element 18, the second input of an additional trigger 19 is connected to the third input, an additional element And 18 and the combined inputs of the first and second elements And 7 and 8, the second input of the converter 17 analogue — the code is connected to the input of the peak detector 2, the third input the converter 17 analogue — the code is connected to the direct output of the second trigger 15 of the selector 16 time intervals, and its output is connected with the corresponding input of the statistical analyzer 6, while the first and second outputs of the computing unit 2O are respectively connected with the second inputs of the first and second comparators 1O and 11, the third output, the first and second inputs of the computing unit 20 are connected with each other to one of the inputs of the statistical analyzer 6, the control input Read, the input and output of the statistical analyzer 6. At the start of operation, the first trigger 1, counter 9, second trigger 12, delay element 13, converter 4 time – code, converter 17 analog – code and statistical analyzer 6 are in the reset state, and additional trigger 19 is in the unit state . At the second output of the computing unit 2O, a

the code corresponding to the number of extrema in the recorded sequence is

The first output of the computing unit 2O forms a code corresponding to the number of the interval under study. In the playback mode at the control input, the reading is set to a logical unit. On the peak detector 2 code, signals are generated that correspond to the extremes of the input signal. The distance between the signal drops at the outputs of the first trigger 1 characterizes the statistical characteristics of the Sishal time parameters. The investigated interval is selected by the selector 16 time intervals and fed to the 4 time converter — a code, and then to the statistical analyzer 6. The signal at the output of the third trigger 15 indicates the polarity of the studied interval of polarity and the polarity of the amplitude of the cooiw extremum of the signal. The end of xintrol is marked with a low level at the control input Read. From this point on, computational block 2O reads information from statistical analyzer 6 to calculate the central and initial moments of the distribution of the amplitude and time parameters of the signal, as well as other possible statistical characteristics of the signal.

The use of the proposed device allows extending its functionality and increasing the processing efficiency of information by means of an Xctrol amplitude and temporal parameters of reproduction & nphy signal nph any means of digital recording.

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Claims (1)

DEVICE FOR CONTROL OF DIGITAL MAGNETIC RECORDING EQUIPMENT St. No. 754472, characterized in that, in order to provide the possibility of statistical control of the amplitude and phase parameters of a digital signal, a series-connected converter, an analog-code converter, an additional element And and an additional trigger, as well as a computing unit, the first input of an additional trigger, are introduced into it hera is connected to the output of the peak detector and the second input of the additional element And, the second input of the additional trigger is connected to the third input of the additional element And and the combined inputs of st and second elements D, the second ^4: input transducer analog code connected to the input of the peak detector, one connected to the direct output of the second latch slots selector, and an output connected to a corresponding input of the statistical analyzer, the first and second outputs of the computing unit are connected respectively, with the second inputs of the first and second comparators, the third output, the first and second inputs of the computing unit are connected respectively to one of the inputs of the statistical analyzer that controls the input y * 4 current *, input and output of the statistical analyzer.