Wobble signal extraction circuit and optical disk device

Details Wobble signal extraction circuit and optical disk device Wobble signal extraction circuit and optical disk device

2011-04-26

2011-04-26

Agustin, Peter Vincent (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

Reexamination Certificate

active

07933173

ABSTRACT:
A wobble signal extraction circuit includes: an RF signal component acquiring portion for acquiring an RF signal component from at least one of first and second signals received by two light receiving portions, the two light receiving portions being obtained through division in halves with a direction along which each track of an optical recording medium extends as a boundary; a wobble signal acquiring portion for acquiring a wobble signal by subtracting the second signal from the first signal; an RF signal component binarizing portion for binarizing the RF signal component; a wobble signal binarizing portion for binarizing the wobble signal; and an exclusive OR arithmetically operating portion for arithmetically operating an exclusive OR of the binarized RF signal component and the binarized wobble signal; wherein balances between amplitudes of the first and second signals are detected based on an arithmetic operation result obtained in the exclusive OR arithmetically operating portion.

REFERENCES:
patent: 6822935 (2004-11-01), Park et al.
patent: 7099244 (2006-08-01), Nakata et al.
patent: 7447142 (2008-11-01), Kuroda et al.
patent: 7447290 (2008-11-01), Hsiao
patent: 7693012 (2010-04-01), Hsieh et al.
patent: 2004/0165497 (2004-08-01), Hirayama
patent: 2005/0147016 (2005-07-01), Morikawa et al.
patent: 2006/0007822 (2006-01-01), Mashimo
patent: 2006/0077849 (2006-04-01), Chen et al.
patent: 1673877 (2005-07-01), None
patent: 2000-113595 (2000-04-01), None
patent: 2005-196846 (2005-07-01), None
patent: 2005-353195 (2005-12-01), None
patent: 2006-059447 (2006-03-01), None
Japanese Office Action issued on Oct. 20, 2009, for corresponding Japanese Patent Application 2007-322460.

Affiliated with

Also associated with

Rating

Wobble signal extraction circuit and optical disk device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wobble signal extraction circuit and optical disk device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wobble signal extraction circuit and optical disk device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2652153