Method and apparatus for detecting position of alternated land a

Details Method and apparatus for detecting position of alternated land a Method and apparatus for detecting position of alternated land a

1998-01-05

2000-07-18

Huber, Paul W.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4428, 369 4429, 369 58, G11B 700

Patent

active

060916788

ABSTRACT:
For a disk of a land/groove scheme with land tracks and grooves appearing alternately, in order to enable stable and reliable reproduction of information as recorded on a disk by stably and reliably detecting a specific position at which a land track and groove change therebetween, a technique is employed for detecting the position whereat one land track is changed to a groove, or vice versa, by utilizing an HPP signal rather than an RF signal in cases where an optical head 103 attempts to reproduce certain information at the pit formation position of a disk 101. In addition, detect the polarity--positive or negative--of a pit signal appearing in the HPP signal, and then detect the position whereat the land track and groove change therebetween based on the position at which the order or sequence thereof changes, thereby permitting effectuation of optical head's tracking control and focus control by a method suitable for its respective parts.

REFERENCES:
patent: 5566141 (1996-10-01), Yamaguchi et al.

Affiliated with

Also associated with

Rating

Method and apparatus for detecting position of alternated land a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for detecting position of alternated land a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for detecting position of alternated land a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2044092