Active focus alignment system for multilayer optical disk storag

Details Active focus alignment system for multilayer optical disk storag Active focus alignment system for multilayer optical disk storag

1996-04-01

1998-04-14

Epps, Georgia Y.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 4413, 369112, G11B 700

Patent

active

057401454

ABSTRACT:
Laser light is focused in an accurate manner on selected layers in a multilayer optical disk recording system by means of an analysis of output electrical signals from a dithered source which results in the production of an electrical signal which is proportional to an amount by which the parts of the system are to be relatively moved in order to achieve the desired focus on one of the layers.

REFERENCES:
patent: 3848095 (1974-11-01), Wohlmut et al.
patent: 3946367 (1976-03-01), Wohlmut et al.
patent: 4074312 (1978-02-01), van Rosmalen
patent: 4337531 (1982-06-01), Willemsen
patent: 4358774 (1982-11-01), Wilkinson
patent: 4445209 (1984-04-01), Mickleson et al.
patent: 4475179 (1984-10-01), Geyer
patent: 4481550 (1984-11-01), Miller et al.
patent: 4972397 (1990-11-01), Zurbrick et al.
patent: 5251198 (1993-10-01), Strickler

Affiliated with

Also associated with

Rating

Active focus alignment system for multilayer optical disk storag does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Active focus alignment system for multilayer optical disk storag, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active focus alignment system for multilayer optical disk storag will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-643203