Signal reproducing method and apparatus for reproducing informat

Details Signal reproducing method and apparatus for reproducing informat Signal reproducing method and apparatus for reproducing informat

1997-09-18

2000-05-02

Dinh, Tan

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369116, G11B 1100

Patent

active

060580771

ABSTRACT:
In a signal reproducing apparatus, information is reproduced by moving a magnetic wall on a magnetic recording medium as follows. A temperature profiled is given the medium by using a light beam so as to detect a first reproduction signal h(t)=f(t)+.alpha.*f(t-.beta.) containing both a signal component f(t) obtained by a first backward magnetic wall movement toward a temperature peak position in the temperature profile and a signal component .alpha.*f(t-.beta.) obtained by a second forward magnetic wall movement toward the temperature peak position. The power of the light beam is adjusted so that a delay amount .beta. is essentially an integer multiple of a recording code channel interval Tb. An amplitude ratio .alpha. is detected. A slice level is set in accordance with the detected amplitude ratio .alpha. so as to reproduce the information by comparing the first reproduction signal with the slice level.

REFERENCES:
patent: 5091897 (1992-02-01), Otokawa et al.
patent: 5233578 (1993-08-01), Yamamoto et al.
patent: 5353266 (1994-10-01), Fujii
patent: 5398227 (1995-03-01), Miyaoka et al.
patent: 5428586 (1995-06-01), Kobayashi et al.
patent: 5587975 (1996-12-01), Kobayashi
patent: 5621706 (1997-04-01), Kawano et al.
patent: 5629909 (1997-05-01), Shiratori
patent: 5740133 (1998-04-01), Tamanoi et al.

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