Method for discriminating optical discs, and optical disc...

Details Method for discriminating optical discs, and optical disc... Method for discriminating optical discs, and optical disc...

2005-11-29

2005-11-29

Patel, Gautam R. (Department: 2655)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S044280, C369S053450, C369S053200

Reexamination Certificate

active

06970408

ABSTRACT:
An optical disc apparatus which is compatible with a compact disc (CD) and a Digital Versatile Disc (DVD) has a configuration of an optical pickup which performs a scanning operation in a focus-on and track-off state to read signals from an optical disc; an RF amplifier which, on the basis of the read signals, produces binary track-cross signals and binary mirror signals; a first edge counter which counts the number of the binary track-cross signals; a second edge counter which counts the number of the binary mirror signals; and a central processing unit (CPU) which discriminates between a CD or a DVD on the basis of a ratio between the number of the binary track-cross signals and the number of the binary mirror signals.

REFERENCES:
patent: 5721718 (1998-02-01), Hwang
patent: 5774438 (1998-06-01), Park et al.
patent: 5909419 (1999-06-01), Kamiyama
patent: 6243341 (2001-06-01), Hasimoto
patent: 6304535 (2001-10-01), Magome et al.
patent: 6807136 (2004-10-01), Grimm
patent: 6816443 (2004-11-01), Hwang
patent: 08036827 (1996-02-01), None
patent: 08115525 (1996-05-01), None
patent: 09017106 (1997-01-01), None
patent: 9-44982 (1997-02-01), None
patent: 09282784 (1997-10-01), None
patent: 10-198985 (1998-07-01), None
patent: 10-199122 (1998-07-01), None
patent: 11213395 (1999-08-01), None

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