Offset loop for wobble

Details Offset loop for wobble Offset loop for wobble

2007-05-09

2010-10-26

Young, Wayne R (Department: 2627)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Control of information signal processing channel

C369S044290, C369S124110

Reexamination Certificate

active

07821889

ABSTRACT:
An automated capability is provided in which an offset correction is automatically determined and routinely updated in order to reduce or otherwise eliminate data retrieval errors that may be caused by low level distortion in optical disc data storage recording, re-recording and retrieval system. The capability is implemented through an improved offset control loop for reading information from a modulated wobble signal with which the data is recorded to an optical disc data storage medium to provide detection of an offset and correction of that offset to facilitate implementation of precise timing synchronization and/or encoded information contact in the system. The offset detector measures a wobble signal and mathematically converts detected information regarding the measured wobble signal to an offset correction by integrating the wobble signal over a specific time interval and comparing the integrated value to an expected integrated value. The integration may be performed over at least one period of the sinusoidal wobble signal, and the correction added to the wobble signal.

REFERENCES:
patent: 5610487 (1997-03-01), Hutsell
patent: 5933410 (1999-08-01), Nakane et al.
patent: 7092329 (2006-08-01), Ko et al.
patent: 7092330 (2006-08-01), Miyamoto et al.
patent: 7095681 (2006-08-01), Park et al.
patent: 2004/0252608 (2004-12-01), Park et al.
patent: 2005/0094515 (2005-05-01), Nagai et al.
patent: 2006/0203631 (2006-09-01), Wu et al.
patent: 2007/0025222 (2007-02-01), Immink et al.

Affiliated with

Also associated with

Rating

Offset loop for wobble does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Offset loop for wobble, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Offset loop for wobble will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4174874