Method for checking the existence of an optical disk using a...

Details Method for checking the existence of an optical disk using a... Method for checking the existence of an optical disk using a...

2006-03-14

2006-03-14

Korzuch, William (Department: 2653)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044270, C369S044410, C369S053220, C369S053230, C369S053280, C369S053370, C369S094000

Reexamination Certificate

active

07012858

ABSTRACT:
A method for checking the existence of an optical disk using a focusing signal is provided. The method in accordance with the present invention prevents misjudgement of the existence of an optical disk which is caused by noise contained in a focus error signal or by the low reflection ratio of a disk.

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patent: 5140575 (1992-08-01), Fushiki
patent: 5351226 (1994-09-01), Mizumoto et al.
patent: 5903531 (1999-05-01), Satoh et al.
patent: 5966357 (1999-10-01), Ryoo
patent: 6058082 (2000-05-01), Hwang
patent: 6240054 (2001-05-01), Takeya et al.

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