Optical disc drive and method of controlling focal position

Details Optical disc drive and method of controlling focal position Optical disc drive and method of controlling focal position

2011-03-29

2011-03-29

Young, Wayne R (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044320, C369S044380, C369S047550, C369S053190, C369S053370, C369S103000, C369S112290

Reexamination Certificate

active

07916585

ABSTRACT:
An optical disc drive for recording and/or reading information on or from an optical disc is disclosed. The optical disc drive includes: a position controller which controls the position of the objective lens based on the position-controlling light beam reflected by the reflective surface by condensing the position-controlling light beam by the objective lens such that the position-controlling light beam is brought to a focus at a target guide position on the reflective surface corresponding to the target recording position; a tilt angle detector which detects tilt angle of the optical disc relative to optical axis of the position-controlling light beam; and a focal position corrector which makes a correction such that a focal position obtained when the information light beam is condensed by the objective lens is aligned to the target recording position according to the tilt angle.

REFERENCES:
patent: 2002/0015376 (2002-02-01), Liu et al.
patent: 2005/0030875 (2005-02-01), Horimai
patent: 2005/0122860 (2005-06-01), Koyama
patent: 2005/0180277 (2005-08-01), Iljima et al.
patent: 2005/0207303 (2005-09-01), Yonezawa
patent: 62-217427 (1987-09-01), None
patent: 63-103443 (1988-05-01), None
patent: 2005-32309 (2005-02-01), None
Machine translation of JP2000-155968A into English, Arai.

Affiliated with

Also associated with

Rating

Optical disc drive and method of controlling focal position 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 drive and method of controlling focal position, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disc drive and method of controlling focal position will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2754241