Optical disk drive, and method for identifying optical disks...

Details Optical disk drive, and method for identifying optical disks... Optical disk drive, and method for identifying optical disks...

2005-03-15

2005-03-15

Hindi, Nabil (Department: 2655)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S053230, C369S047480

Reexamination Certificate

active

06868051

ABSTRACT:
The frequency components of the groove wobbles of disks are extracted from push-pull signals SPPby first and second filters in a wobble detecting section. The wobble detecting section supplies to the controller the detection levels of the frequency components. The controller identifies the kind of the mounted optical disks based on the detection levels.

REFERENCES:
patent: 5764610 (1998-06-01), Yoshida et al.
patent: 6188657 (2001-02-01), Kim et al.
patent: 0 874 356 (1998-10-01), None
patent: 0 938 084 (1999-08-01), None

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