SU1642513A1 - Device for digital magnetic recording reproduction - Google Patents

Abstract

The invention relates to the accumulation of information and can be used for digital magnetic recording-reproduction. The purpose of the invention is to reduce the error of the reproduction result. The device for digital magnetic recording-reproduction contains a permalloyed tape ring 10 located on the guide rollers 7 and on spring-loaded circumferential rollers 11, coupled with it symmetrically recording and reproducing magnetic heads 1 and 4. At the same time recording and reproducing magnetic heads 1 and 4 are located symmetrically on opposite sides of one guide roller 7 between other guide rollers 7 and are matched with working surfaces with one surface of metallic magnetic tapes S 8, another surface of which is coupled through a permalloy tape ring 10 with guide rollers 7 1 Il.

Description

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The invention relates to the accumulation of information, namely, devices for digital magnetic recording-reproduction.

The aim of the invention is to reduce the error of the reproduction result.

The drawing shows a diagram of a device for digital magnetic recording-reproduction.

The device contains a recording magnetic head 1 connected through the recording amplifier 2 to the input bus 3, and a reproducing magnetic head 4. connected through the playback amplifier 5 to the output bus 6. The recording 1 and reproducing 4 magnetic heads are located symmetrically on opposite sides of one guide the roller 7 between the other guide rollers 7 and the mating surfaces with the surface of a metal magnetic tape 8 made of a iron-nickel-chrome alloy. In this case, the metal magnetic tape 8 is placed in the form of rolls on the cores 9 with the possibility of movement relative to the recording 1 and reproducing 4 magnetic heads in the process of digital magnetic recording and reproducing

The device also contains a permalloyed belt ring 10, through which another surface of the metal magnetic tape 8 is mated with guide rollers 7, and bypass rollers 11, which are spring-loaded to the housing by means of springs 12. In this case, spring-loaded bypass rollers 12 are located inside the permalloy roller tape ring 10 and mated with, symmetrically recording 1 and reproducing 4 magnetic heads

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The digital magnetic recording-reproducing apparatus operates as follows.

In the process of digital magnetic recording and playback, the metal magnetic tape 8 is moved relative to the recording 1 and reproducing 4 magnetic heads, winding on one of the rolls and winding from the other. In this case, the permalloy belt ring 10 is moved, which is tensioned by spring-loaded circumferential rollers 11. Due to this, the metal magnetic tape 8 is evenly pressed against the working surfaces of the recording tape t and the reproducing 4 magnetic heads.

In the process of digital magnetic recording, a digital signal to be recorded arriving at the input bus 3 passes through the recording amplifier 2 to the recording magnetic head 1, which forms in its working gap a corresponding magnetic field acting on the metallic magnetic tape 8. In this case, the magnetic power closes the magnetic field lines of the recording magnetic head 1, both through the metal magnetic tape 8, and through the permalloy tape ring 10. The latter can reduce the recording current; In order to saturate a digital recording, tight and uniform pressing of the metal magnetic tape 8 to the working surface of the reproducing magnetic head 4 with a permalloy tape ring 10 provides an increase in the amplitude of the reproduced digital signal and reduces the possibility of its loss.

Claims (1)

Claims An apparatus for digital magnetic recording-reproduction comprising recording and reproducing magnetic heads connected to an input bus and to an output bus, respectively, through a recording amplifier and reproduction amplifier, located symmetrically on opposite sides of one guide roller between other guiding rollers and corresponding surfaces with a surface of a metal magnetic tape, characterized in that, in order to reduce the error Playback, a permalloy tape ring is inserted into it, through which the surface of the metal magnetic tape is matched with guide rollers, and spring-loaded circumferential rollers, with spring-loaded circumferential rollers located inside the permalloy tape ring and matched with symmetrically recording and reproducing magnetic heads .