Track access control device for an optical disk drive

Details Track access control device for an optical disk drive Track access control device for an optical disk drive

1992-12-10

1994-03-08

Young, W. R.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4428, 369 4429, 369 4432, 369 54, G11B 7095

Patent

active

052933644

ABSTRACT:
A stable and rapid track access control device capable of preventing, in the event of driving a converging lens of an optical disk drive to move a light beam, the lens from moving excessively. Assume that when the lens is driven to move the light beam, the movement of the lens exceeds a range which an optical lens can follow, increasing the positional deviation of the lens relative to the head. Then, the movement of the lens is so regulated as to equalize the speed of the lens and that of the head relative to each other.

REFERENCES:
patent: 4562562 (1985-12-01), Moriya et al.
patent: 5117410 (1992-05-01), Akiyama
patent: 5199012 (1993-03-01), Imai

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