Circuit arrangement and method for magnetic recording/reproducin

Details Circuit arrangement and method for magnetic recording/reproducin Circuit arrangement and method for magnetic recording/reproducin

1983-05-26

1985-06-25

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Pulse crowding correction

360 46, G11B 509

Patent

active

045257531

ABSTRACT:
In a magnetic recording/reproducing apparatus having a multi-track head for writing a digital signal on a magnetic recording medium, a plurality of head of the multi-track head is electrically divided into a plurality of groups which are respectively driven by writing currents produced in accordance with a plurality of modulated signals indicative of input digital data. The writing currents fed to the heads of the same group are produced in response to a pulse signal such that a plurality of pulse signals having different phases are used for respective groups. The head in the same group are positioned so that they are not adjacent to each other, and therefore, undesirable crosstalk can be reduced because heads corresponding to adjacent tracks are prevented from being driven simultaneously, while the entire writing current power can be reduced. The waveform of each of the writing currents may be controlled in accordance with the period of level inversion of the modulated signals, and therefore, peak shift phenomena due to waveform interference can be reduced.

REFERENCES:
patent: 3016523 (1962-01-01), Sharp

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