Disk storage which automatically adjusts to optimum recording/re

Details Disk storage which automatically adjusts to optimum recording/re Disk storage which automatically adjusts to optimum recording/re

1991-09-27

1993-09-21

Dzierzynski, Paul M.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369106, G11B 700

Patent

active

052475093

ABSTRACT:
An optical or magneto-optical disk storage which automatically adjusts a recording/reproducing level of a number of kinds of optical or magneto-optical disks having different recording/reproducing levels to an optimum recording/reproducing level. The optical or magneto-optical disk storage has an attenuator which applies a predetermined attenuation amount to a reproduced signal reproduced from an optical or magneto-optical disk so as to attenuate the reproduced signal, or intensity adjusting means for adjusting the intensity of a laser beam used for recording and/or reproducing. The optical or magneto-optical disk storage detects an amplitude of the reproduced signal and feed-back-controls the attenuation amount or intensity of the laser beam in accordance with the detected amplitude.

REFERENCES:
patent: 4698797 (1987-10-01), Komatsu
patent: 5126993 (1992-06-01), Yokota

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