SU966729A1 - Method of multitrack digital magnetic recording-reproducing - Google Patents

Description

(54) METHOD OF MULTI-CHAIN DIGITAL - MAGNETIC RECORDING REPRODUCTION

... .-}

This invention relates to magnetic

recording, in particular to methods of multi-track digital magnetic recording-reproduction.

Methods are known for multi-track magnetic recording-reproducing digital information by recording information and onto information tracks, and service signals onto synchronization tracks with subsequent multi-channel reproduction of information 1.

The lack of these methods consists in the loss of information in the formation of machine words from reproducible lines of information.

There is also known a method of multi-track digital magnetic recording-play and by recording on one track the clock pulses and on the remaining tracks, information signals, subsequent multi-track playback t2 3.

The disadvantage of this method lies in the low fidelity of reproduction due to the non-multiplicity of the number of bits of one

lines of information recorded on magnetic media, the number of word bits of the digital computational mask.

The purpose of the invention is to increase the fidelity of digital information production.

For this purpose, before the first pulse, the array of information and between each sync pulse with the number, KpaTHbnvi, the number of full-length lines in the layer, and the subsequent sync pulse, additional sync pulses are recorded and, during playback, the dummy line is shifted. corresponding to the additional clock pulse, beyond

15 words.

The drawing shows the temporary bottoms of the arpaMMii.

Recording and reproduction of digital information takes place as follows.

On the width of the magnetic carrier, lines are recorded on the information tracks of digital information, and on the additional track are sync pulses, each of which has a corresponding information line. Before the first sync pulse of the information array and between each sync pulse multiple to the number of full-length lines in the word, determined by the algorithm of the number machine, write a record; additional sync pulses that the COOT string is fictitious without information. From the recorded result of the write, the dummy line corresponding to the additional cHHJjpoHMnynbcy is shifted beyond the limits of the machine word.

 The use of the invention makes it possible to significantly improve the fidelity of reproducing a digital information recorded asynchronously with respect to the frequency of the formation of the main word of the word from the bit lines.

Formula from gain

A way of multi-track digital. magnetic recording-playback by

records on one track of clock pulses and on the other tracks - informational. signals, distinguished by the fact that, in order to increase the fidelity of reproduction, the first sync pulse of the information array and between each sync pulse with a number that is a multiple of the full-length lines in the word, and the subsequent sync pulse, record additional sync pulses, and when I hear a beat, and then the synch pulse, I record additional sync pulses, and when I hear a beat, I write additional sync pulses, and when I hear a beat, I write additional sync pulses, and when I hear a sync pulse, I record additional sync pulses, and when I hear corresponding to the additional clock pulse, outside the layer & a.

Sources of information taken into account in the examination

1.Vashkevich N.P. and Golovanov G.M. Reliability of preserving information on storage devices on magnetic media. M.,. Mechanical Engineering, 1974,

with. 12-15.

2.Aksenov, V.A., Viches, A.I and Gitlits, M.V. Precisely magnetic recording, M., Energie, 1973, p. 15 (prototype).

1 2 s

5 b 7L 9 10 11 1G

PC

I UI I

Claims (1)

A multi-track digital method. magnetic recording-reproduction by recording on one track of the clock pulses and on the other tracks - information, signals, cast in that, in order to increase the fidelity of reproduction, the first clock pulse is transmitted by the information array and between each clock pulse with a number that is a multiple of the number of full-sized lines in the word, and subsequent sync pulse, record additional sync pulses, and during playback, shift the dummy line corresponding to the additional sync pulse outside the layer.