Method and apparatus for controlling tilt-angle of lens in...

Details Method and apparatus for controlling tilt-angle of lens in... Method and apparatus for controlling tilt-angle of lens in...

2005-05-23

2008-11-04

Hindi, Nabil Z (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S053190

Reexamination Certificate

active

07447125

ABSTRACT:
A method and an apparatus of adjusting the tilt-angle of the lens in the optical pick-up head. The apparatus includes a position detecting unit for detecting a position deviation of the lens against the sled, a parameter generating unit for generating a tilt control parameter according to the position deviation, and a tilt control unit for controlling the lens according to the tilt control parameter so that the lens maintains horizontal with reference to the sled.

REFERENCES:
patent: 5148420 (1992-09-01), Yamamuro
patent: 5272688 (1993-12-01), Horiguchi
patent: 6434096 (2002-08-01), Akagi et al.
patent: 7196991 (2007-03-01), Nagaoka et al.
patent: 7215607 (2007-05-01), Watanabe et al.
patent: 7324413 (2008-01-01), Yamashita et al.

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