Optical disc apparatus, method of adjusting focus offset for...

Details Optical disc apparatus, method of adjusting focus offset for... Optical disc apparatus, method of adjusting focus offset for...

2006-02-28

2010-02-23

Young, Wayne R (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S053260, C369S053240

Reexamination Certificate

active

07668060

ABSTRACT:
In an optical disc apparatus, whether an unrecorded recording layer without information recorded thereon is included in the multiple recording layers of the optical disc mounted inside the apparatus is judged. then when the unrecorded recording layer is judged to be present, a signal for focus offset adjustment is recorded in a non-user data recording area of the unrecorded recording layer, and reproduction of the recorded focus offset adjusting signal is followed by its quality evaluation, which is further followed by calculation and setup of an appropriate focus offset value based on evaluation results.

REFERENCES:
patent: 6392971 (2002-05-01), Takiguchi et al.
patent: 6407968 (2002-06-01), Nakata et al.
patent: 7344077 (2008-03-01), Sagara et al.
patent: 2004/0076084 (2004-04-01), Yonezawa
patent: 09-007193 (1997-01-01), None
patent: 11-003550 (1999-01-01), None
patent: 2001-093162 (2001-04-01), None
patent: 2002-92880 (2002-03-01), None
patent: 2002-304730 (2002-10-01), None
patent: 2003-217140 (2003-07-01), None
patent: 2003-338057 (2003-11-01), None
patent: 2005-259257 (2005-09-01), None
patent: 2005-259259 (2005-09-01), None
patent: WO 2004086382 (2004-10-01), None

Affiliated with

Also associated with

Rating

Optical disc apparatus, method of adjusting focus offset for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical disc apparatus, method of adjusting focus offset for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disc apparatus, method of adjusting focus offset for... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4221246