Method and apparatus for recording data information on a magneti

Details Method and apparatus for recording data information on a magneti Method and apparatus for recording data information on a magneti

1990-04-11

1992-06-02

Severin, David J.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

360 45, G11B 509

Patent

active

051192446

ABSTRACT:
A method and an apparatus for recording data information on a magnetic recording medium with the assistance of a magnetic write head and a controllable record amplifier preceding the magnetic write head and to which the data information in the form of binary data signals, as well as bias signals superimposed thereon are supplied, are disclosed. The recorded signals are, in turn, read with a playback device immediately after the recording. In a measuring device, the peak shift of the read output signals is measured and averaged. The amplitudes for the binary data signals and/or of the bias signals are corrected with a control signal generated by a control unit dependent on the average peak shift, being corrected in order to achieve an optimum relationship of read output signal amplitude to minimum peak shift.

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Hahs, W. R., "Bit Displacement Compensation for High-Density Recording", IBM Technical Disclosure Bulletin, vol. 14, No. 11, Apr. 1972.

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