Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate
2006-06-24
2009-10-20
Edun, Muhammad N. (Department: 2627)
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
C369S044140
Reexamination Certificate
active
07606119
ABSTRACT:
In one preferred embodiment, an objective lens actuator includes a base, a suspension apparatus mounted on the base, a holder suspended by the suspension apparatus for holding an objective lens, a voice coil motor (VCM) for driving the holder to vibrate, and a cover. The VCM includes a first yoke, a second yoke and a pair of magnets fixed on the first yoke and the second yoke respectively. The first yoke and the second yoke respectively include a first part and a second part. The cover is made of a material having a magnetic conductivity. The cover connects the first part and the second part of each of the first yoke and the second yoke.
REFERENCES:
patent: 4568142 (1986-02-01), Iguma
patent: 7408848 (2008-08-01), Ke et al.
Chao Chih-Hang
Chen Chun-Ming
Lin Yu-Hsu
Wu Jeng-Da
Chung Wei Te
Edun Muhammad N.
Hon Hai Precision Industry Co. Ltd.
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