Tilt control for optical disc recording and playback apparatus

Details Tilt control for optical disc recording and playback apparatus Tilt control for optical disc recording and playback apparatus

2007-01-16

2007-01-16

Korluch, William (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S044320

Reexamination Certificate

active

10615996

ABSTRACT:
A DC voltage value is obtained at least at an inside position, an intermediate position, and an outside position on a disc (1) from a drive signal that is supplied to a focusing coil (4) built into an optical pickup (2). From the DC voltage values is obtained a relationship of a position between the respective positions and the DC voltage value, and this relationship is stored into a memory circuit (12). Then, during recording or playback, the DC voltage value that is calculated on the basis of the recording or playback position of the signal at that time and the AC signal included in the drive signal that is supplied to the focusing coil (4) are added to create a signal to be supplied to a tilt adjustment coil (6).

REFERENCES:
patent: 4730294 (1988-03-01), Funada
patent: 6842414 (2005-01-01), Park
patent: 2002-197698 (2002-07-01), None
patent: 2002-208155 (2002-07-01), None

Affiliated with

Also associated with

Rating

Tilt control for optical disc recording and playback apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tilt control for optical disc recording and playback apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tilt control for optical disc recording and playback apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3815210