Optical pickup apparatus having crosstalk balance and tilt corre

Details Optical pickup apparatus having crosstalk balance and tilt corre Optical pickup apparatus having crosstalk balance and tilt corre

1997-05-30

1999-06-01

Tran, Thang V.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369124, 369 4434, G11B 700

Patent

active

059094133

ABSTRACT:
An optical pickup apparatus in which a difference between a crosstalk amount to a desired track to be read on an optical disc by a signal recorded on a track locating on an inner circumference of the desired track and a crosstalk amount to a desired track by the signal recorded on the track locating on an outer circumference of the desired track is generated as a tilt error signal value indicative of the occurrence of an aberration, and the aberration is optically corrected on the basis of the tilt error signal value. Thus, the crosstalk can be sufficiently reduced even for the optical disc with a high recording density.

REFERENCES:
patent: 5544141 (1996-08-01), Kawasaki
patent: 5546367 (1996-08-01), Yoshimura et al.
patent: 5642341 (1997-06-01), Stork
patent: 5703855 (1997-12-01), Kirino et al.
patent: 5719847 (1998-02-01), Tateishi et al.

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