Method for calibrating tilt control values of a pickup head...

Details Method for calibrating tilt control values of a pickup head... Method for calibrating tilt control values of a pickup head...

2007-09-04

2007-09-04

Wellington, Andrea (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S053190

Reexamination Certificate

active

10915476

ABSTRACT:
A method for calibrating tilt control values of a PUH in real time is applied to an optical disk drive and includes the steps of: creating a look-up table, the look-up table including several optical disk data/physical addresses of track zones and the corresponding tilt control values; reading tilt control values as reference values from the look-up table corresponding the track position of a PUH; calculating a current tilt control value according to the reference values; controlling the PUH according to the current tilt control value; reading a decoding error generated during a decoding procedure of the optical disk drive; calibrating the tilt control values and updating the look-up table. When the decoding error is larger than a decoding error threshold, the tilt control values of the track zone is calibrated. Hence, even an irregularly deformed optical disk can be calibrated to obtain better tilt control values.

REFERENCES:
patent: 5627808 (1997-05-01), Hajjar et al.
patent: 5886496 (1999-03-01), Furukawa et al.
patent: 5898654 (1999-04-01), Shimada et al.
patent: 6381206 (2002-04-01), Maeda
patent: 6885621 (2005-04-01), Ma et al.
patent: 7187636 (2007-03-01), Kato et al.
patent: 2004/0037195 (2004-02-01), Sasaki et al.
patent: 2004/0125711 (2004-07-01), Sato et al.

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