Multiple data layer optical disk with recorded information ident

Details Multiple data layer optical disk with recorded information ident Multiple data layer optical disk with recorded information ident

1997-02-24

1998-04-28

Neyzari, Ali

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

3692754, 428694MM, G11B 724

Patent

active

057454736

ABSTRACT:
A multiple data layer optical medium, such as an optical disk, has a plurality of substrates, each of which has a data surface. The laser light beam from the optical data recording system is maintained on the data tracks of the two spaced-apart data surfaces by the use of tracking marks contained on the data surfaces. One of the data surfaces includes recorded information that identifies the type of tracking marks present.

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