Linear drive mechanism for use in an optical disk device

Details Linear drive mechanism for use in an optical disk device Linear drive mechanism for use in an optical disk device

1995-09-14

1997-03-11

Tran, Thang V.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4429, 369 4414, 369 4425, 369 32, G11B 7085

Patent

active

056108850

ABSTRACT:
According to an optical head device access mechanism, drive coils, which provide propulsive force for moving an objective lens, and position sensors, which detect the position of the slide base, are arranged at a position where all driving force and frictional force corresponding to the driving force can be surely detected. The present position of the slide base corresponding to a level of a drive current supplied to the drive coils and its moving speed are converted to a compensation driving current for generating driving force corresponding to driving force lost by frictional force by a position/speed controlling circuit.

REFERENCES:
patent: 5033037 (1991-07-01), Yanagi
patent: 5285431 (1994-02-01), Ogawa
patent: 5291464 (1994-03-01), Osada
patent: 5351222 (1994-09-01), Ikeda et al.
patent: 5442604 (1995-08-01), Osada
patent: 5493546 (1996-02-01), Kasahara

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