Apparatus and method for recording/reproducing information

Details Apparatus and method for recording/reproducing information Apparatus and method for recording/reproducing information

1998-08-25

1999-12-07

Cabeca, John W.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 13, 369 48, 369 59, G11B 2010

Patent

active

059995106

ABSTRACT:
A recording/reproducing apparatus and method can accurately reproduce high density record information by the mark-edge recording method. The apparatus and method can use a sag cancellation circuit or a reference slice level follow-up circuit immediately before or at amplitude limitation for amplitude of a read signal to attain transient correction. As a result, the recorded information can be reproduced even under a reproduction environment with a low signal to noise ratio without an amplitude limiter circuit for narrowing the margin for transient caused by sudden variation of direct current.

REFERENCES:
patent: 4743774 (1988-05-01), Maeda et al.
patent: 5311493 (1994-05-01), Fuji
patent: 5574709 (1996-11-01), Takeda
patent: 5598389 (1997-01-01), Nakano et al.
patent: 5790482 (1998-08-01), Saga et al.

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