Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Reexamination Certificate
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.
Butcher Brian
Hon Hai Precision Industry Co. Ltd.
Knapp Jeffrey T.
Young Wayne R
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