Method for identifying type of optical disk

Details Method for identifying type of optical disk Method for identifying type of optical disk

2011-01-11

2011-01-11

Edun, Muhammad N (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S053200, C369S044250, C369S044340, C369S047100

Reexamination Certificate

active

07869324

ABSTRACT:
A method for identifying a type of an optical disk includes the steps of: turning on a laser diode of an optical pickup and focusing light emitted from the laser diode on the optical disk; moving the optical pickup to obtain a plurality of servo signals; reading a specific servo signal from the servo signals; and determining the type of the optical disk according to the count of enabled times of the specific servo signal and a corresponding enabled time period.

REFERENCES:
patent: 6778479 (2004-08-01), Weng
patent: 2005/0068873 (2005-03-01), Chung
patent: 2005/0265187 (2005-12-01), Chang et al.
patent: 2005/0265188 (2005-12-01), Chang et al.
patent: 2008/0151701 (2008-06-01), Park et al.

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