Optical pickup for using disks each having a different thickness

Details Optical pickup for using disks each having a different thickness Optical pickup for using disks each having a different thickness

1997-09-16

2000-03-21

Spyrou, Cassandra

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4427, 369120, 359 15, G11B 700, G02B 532

Patent

active

060410272

ABSTRACT:
An optical pickup capable of use with disks each having a different thickness, including two optical modules each having a light source having a different wavelength, and a photodetector for receiving reflected light. The optical pickup selects a proper light source out of two light sources each having a different wavelength, according to the type of disk and the information which is to be reproduced, and records/reproduces information stored in the disk under optimum conditions according to the thickness of the disk.

REFERENCES:
patent: 5523993 (1996-06-01), Freeman
patent: 5793734 (1998-08-01), Tsuchiya et al.
patent: 5802037 (1998-09-01), Lee et al.

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