Pre-pit information-detecting apparatus, optical-information...

Details Pre-pit information-detecting apparatus, optical-information... Pre-pit information-detecting apparatus, optical-information...

2006-07-18

2006-07-18

Korzuch, William (Department: 2653)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S124150, C369S059170, C369S047270, C369S124070

Reexamination Certificate

active

07079475

ABSTRACT:
An apparatus for detecting pre-pit information is disclosed, including an optical pickup, an optical-detecting section, a difference-detecting circuit, a first peak-value detecting circuit, a filtering circuit, a second peak-value detecting circuit, a differential potential-dividing circuit, and a comparator.

REFERENCES:
patent: 6487149 (2002-11-01), Yokoi et al.
patent: 6519214 (2003-02-01), Hikima
patent: 6556523 (2003-04-01), Masui
patent: 6603726 (2003-08-01), Yoshida et al.
patent: 6757233 (2004-06-01), Akabane et al.
patent: 6801488 (2004-10-01), Kato et al.
patent: 6891782 (2005-05-01), Saito et al.
patent: 6912190 (2005-06-01), Inokuchi et al.
patent: 2000-113463 (2000-04-01), None
patent: 2000-149259 (2000-05-01), None
patent: 2000-207744 (2000-07-01), None
patent: 2002-93061 (2002-03-01), None

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