Magneto-optical recording-reproducing method utilizing domain wa

Details Magneto-optical recording-reproducing method utilizing domain wa Magneto-optical recording-reproducing method utilizing domain wa

1998-05-27

1999-09-14

Neyzari, Ali

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369116, G11B 1100

Patent

active

059532890

ABSTRACT:
A method for reproducing information on a magneto-optical medium comprises causing temperature distribution on the magneto-optical medium by projection of a light beam and displacing domain walls by the temperature gradient, wherein a detected reproduction signal is corrected by subtraction therefrom of a signal derived by delaying the detected reproduction signal by a prescribed time .beta. and multiplying the delayed signal by an amplitude gain .alpha.. An apparatus for reproducing information on a magneto-optical medium with regard to the above method comprises a first circuit for generating reproduced signals from reflection of the light beam, a second circuit for generating a modified signal derived by delaying the reproduction signal by a prescribed delay time .beta. and multiplying an amplitude gain .alpha., and a third circuit for subtracting the modified signal from the reproduced signal.

REFERENCES:
patent: 5091897 (1992-02-01), Otokawa et al.
patent: 5223578 (1993-06-01), Yamamoto et al.

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