Optical information recording and/or reproducing apparatus and m

Details Optical information recording and/or reproducing apparatus and m Optical information recording and/or reproducing apparatus and m

1996-09-26

1998-09-15

Edun, Muhammad N.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 54, G11B 700

Patent

active

058089845

ABSTRACT:
An optical information recording and/or reproducing apparatus for carrying out at least one of recording and reproduction of information by projecting a light beam condensed by an objective lens onto an information track of a recording medium, includes a detecting device for detecting an inclination of an optical axis of the objective lens with respect to a direction perpendicular to a surface of the recording medium and a control device for inhibiting recording or reproduction of information, based on a detection result of the detecting device.

REFERENCES:
patent: 4858214 (1989-08-01), Baba
patent: 4955011 (1990-09-01), Baba
patent: 5056075 (1991-10-01), Maruta et al.
patent: 5559770 (1996-09-01), Hiroki et al.

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