System and method for adjusting tilt angle of light beam

Details System and method for adjusting tilt angle of light beam System and method for adjusting tilt angle of light beam

2006-12-28

2010-06-01

Young, Wayne R (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S044320

Reexamination Certificate

active

07729220

ABSTRACT:
A method for adjusting a tilt angle of a light beam emitted by an optical pickup unit of an optical disc drive, the method includes steps of adjusting the tilt angle of the light beam according to test parameters preinstalled in the optical disc drive; detecting focusing error signals, the focusing error signals being generated based on the light beam reflected from an optical disc; generating current parameters based on the focusing error signals; storing the current parameters; adjusting the tilt angle of the light beam according to the current parameters.

REFERENCES:
patent: 6625091 (2003-09-01), Obara
patent: 7038977 (2006-05-01), Cheong et al.
patent: 2006/0114774 (2006-06-01), Kun-yi
patent: 2006/0209655 (2006-09-01), Hibino
patent: 2007/0104063 (2007-05-01), Bang
patent: 1477626 (2004-02-01), None
Machine translation of JP 2004-079069 A into English, Yoshimoto.

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