Active tracking system for optical disk storage

Details Active tracking system for optical disk storage Active tracking system for optical disk storage

1996-04-01

1998-08-11

Tran, Thang V.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4413, G11B 7085

Patent

active

057937184

ABSTRACT:
Laser light is focused in an accurate manner on selected tracks on an optical disk recording medium by means of an analysis of output electrical signals from a dithered light source which results in the production of an electrical signal which is proportional to an amount by which the light source in the system is to be moved, relative to the tracks, in order to achieve desired tracking of the focused spot along a desired track on the medium.

REFERENCES:
patent: 3848095 (1974-11-01), Wohlmut et al.
patent: 3946367 (1976-03-01), Wohlmut et al.
patent: 4271334 (1981-06-01), Yardy
patent: 4352981 (1982-10-01), Sugiyama et al.
patent: 4358774 (1982-11-01), Wilkinson
patent: 4972397 (1990-11-01), Zurbrick et al.
patent: 5251198 (1993-10-01), Strickler

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