Method for adjusting tilt of optical pick-up head

Details Method for adjusting tilt of optical pick-up head Method for adjusting tilt of optical pick-up head

2009-08-19

2011-11-29

Haley, Joseph (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S044370, C369S044410

Reexamination Certificate

active

08068396

ABSTRACT:
A method for adjusting a tilt of an optical pick-up head includes the steps of: moving the optical pick-up head to a first location and focusing on; obtaining a first focus control power and a first optimum tilt angle at the first location; moving the optical pick-up head to a second location and focusing on; obtaining a second focus control power and a second optimum tilt angle at the second location; calculating an optical sensitivity according to the first and second optimum tilt angles, and the first and second focus control powers; and when the head is moved to a specific location where the tilt of the head is to be adjusted, storing a focus control power corresponding to the specific location, and calculating a tilt angle corresponding to the specific location according to the focus control power and the optical sensitivity so that the tilt of the optical pick-up head can be appropriately adjusted.

REFERENCES:
patent: 2005/0024999 (2005-02-01), Hsiao
patent: 2007/0030774 (2007-02-01), Raaymakers

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