SU913446A1 - Method of checking magnetic recording of digital information - Google Patents

Description

The invention relates to magnetic recording, and in particular to methods of controlling magnetic recording of digital information.

A known method of controlling magnetic recording of digital information, based on recording the information zone and checking the correctness of the recording result. The known method allows to ensure the relative simplicity of the process of controlling the magnetic recording of digital information [1].

The disadvantage of this method is the considerable duration of the process of monitoring magnetic recording of digital information.

There is also known a method of controlling magnetic recording of digital information, based on recording a marker, recording an information zone, reverse rewinding a magnetic tape until the reproducing head is installed in the interzone interval, checking the accuracy of the recording

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and erasing a portion of the magnetic tape. This method allows you to provide a relatively high speed control of the magnetic recording of digital information [23.

The disadvantage of the method is a significant control error.

The purpose of the invention. The reduction of the error of control of magnetic recording of digital information.

This goal is achieved due to the fact that after recording the marker, the control signs of zonal differences are recorded, and erasing a section of the magnetic tape is performed after recording the information zone and before rewinding the magnetic tape until the reproducing head is installed in the interzone interval, after which the correctness of the recording is checked reproduction of a marker, control signs of zonal differences and information zones.

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Monitoring magnetic recording of digital information according to the proposed method is as follows.

On a magnetic tape, write the marker and. subsequent recording of the information zone. At the same time, after recording the marker, before recording the information zone, the control signs of zone differences are recorded. The reference signs of zonal differences serve to distinguish each subsequent information zone from the previous information zone.

After recording the information zone, 5 erase a section of the magnetic tape, after which the rewind of the magnetic tape is performed until the reproducing head is installed in the interzone interval. · _Μ Then they check the correctness of the result of the recording by playing back the marker, the control signs of the zone differences and the information zones. When an error is detected, an additional ₂₅ full-length 1C | h reversing of the magnetic tape will be produced to the moment of reproducing the reproducing head in the interzone interval. and 're-recording of the marker, control signs of zonal differences and information zones. ί

The use of the invention allows to significantly reduce the error control of the magnetic recording of digital information. In addition, the use of the invention provides ³⁵

(6 4 The process of controlling a magnetic recording of digital information is sufficiently simple.

Claims (1)

Claim The method of controlling magnetic recording. digital information based on marker recording, recording the information zone, reversely rewinding the magnetic tape until the reproducing head is installed in the inter-zone interval, checking the correctness of the recording result and erasing a section of the magnetic tape, characterized in that, in order to reduce the control error, after recording the marker record the control signs of zone differences, and erasing a section of the magnetic tape is carried out after recording the information zone and before reversely swapping the magnetic tape. The head of the reproducing head is in the interzone zone, after which they verify the correctness of the result of the recording by playing the marker, the control signs of the zone differences and the information zone.