Method and apparatus of determining a type of disc

Details Method and apparatus of determining a type of disc Method and apparatus of determining a type of disc

2008-01-29

2008-01-29

Edun, Muhammad (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S044250, C369S044270, C369S053200

Reexamination Certificate

active

10885896

ABSTRACT:
A method of determining a type of a disc for a disc system to record/reproduce a plurality of recordable discs having different track pitches, including detecting a plurality of signals for determination while moving an objective lens up or down and simultaneously making the objective lens vibrate in a radial direction of the disc, and determining the types of the discs having different track pitches by using the detected signals for determination.

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