Circuit and method for detecting mirror signal for optical...

Details Circuit and method for detecting mirror signal for optical... Circuit and method for detecting mirror signal for optical...

2005-11-22

2005-11-22

Dinh, Tan (Department: 2653)

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

C369S124150

Reexamination Certificate

active

06967906

ABSTRACT:
A circuit and a method of detecting a mirror signal for an optical disc apparatus, the method includes detecting a bottom envelope from a radio frequency signal and providing a bottom envelope signal thereof, amplifying the bottom envelope signal according to a center level of the bottom envelope signal, and comparing the amplified bottom envelope signal with a predetermined comparison voltage to detect the mirror signal.

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