Compensating circuit, equalizer and magnetic recording/reproduci

Details Compensating circuit, equalizer and magnetic recording/reproduci Compensating circuit, equalizer and magnetic recording/reproduci

1997-11-13

2000-10-31

Faber, Alan T.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of equalizing

360 46, 360 53, G11B 535

Patent

active

061411671

ABSTRACT:
A compensating circuit for compensating positive-negative asymmetry of an input signal having an amplitude exhibiting a positive-negative asymmetry with reference to a given level. Either one of the input signal or a signal obtained by multiplying the input signal by a given number is selected to be outputted as a compensated signal when the input signal has a level higher than a threshold level or alternatively when the input signal has a level lower than the threshold level. Distortion of signal waveforms ascribable to non-linearity of an MR head can be compensated satisfactorily with an extremely simplified and inexpensive circuit structure.

REFERENCES:
patent: 5283521 (1994-02-01), Ottesen et al.
patent: 5400189 (1995-03-01), Sato et al.
patent: 5418660 (1995-05-01), Sato et al.
patent: 5790335 (1998-08-01), Sugawara et al.
patent: 5862007 (1999-01-01), Pham et al.
patent: 5872668 (1999-02-01), Muto

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