Predistortion of NRZ recording current for video recordings

Details Predistortion of NRZ recording current for video recordings Predistortion of NRZ recording current for video recordings

1974-12-24

1976-06-29

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

General recording or reproducing

360 66, G11B 502

Patent

active

039673170

ABSTRACT:
Undesirable interference beat patterns in the displayed video signals produced by a magnetic record/reproduce head are substantially eliminated by appropriately changing the amplitude of the writing current to the head in synchronism with the polarity reversal to establish a current ratio which will result in uniform spacing between zero crossovers in the voltage output of the magnetic recording system.

REFERENCES:
patent: 3161730 (1964-12-01), Collins
patent: 3376566 (1968-04-01), Coccagna
patent: 3444331 (1969-05-01), Brown, Jr.
patent: 3564160 (1971-02-01), Temes et al.
patent: 3641526 (1972-02-01), Bailey

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