Optical disk apparatus

Details Optical disk apparatus Optical disk apparatus

1997-05-21

1999-10-05

Hindi, Nabil

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 4425, 369 94, G11B 700

Patent

active

059635240

ABSTRACT:
An optical disk apparatus capable of automatically setting a pickup lens suitable for an optional optical disk selected from a plurality of optical disks having different thicknesses. Current flowing through an actuator is detected with a detector circuit, A/D converted, and supplied to a controller. The controller detects the in-focus positions at the surface and reflection film of an optical disk in accordance with an FOK signal and an FZC signal, calculates the current values flowing through the actuator at the in-focus positions, and judges the thickness of the optical disk in accordance with a difference between the current values.

REFERENCES:
patent: 5682372 (1997-10-01), Yamakawa et al.
patent: 5721718 (1998-02-01), Hwang
patent: 5790493 (1996-10-01), Takeya et al.
patent: 5808983 (1996-06-01), Tsutsui et al.
patent: 5835460 (1995-12-01), Nishikata

Affiliated with

Also associated with

Rating

Optical disk apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical disk apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disk apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1179763