Method and system for radial and tangential tilt calibration...

Details Method and system for radial and tangential tilt calibration... Method and system for radial and tangential tilt calibration...

2011-04-26

2011-04-26

Feild, Joseph H (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S044320

Reexamination Certificate

active

07933181

ABSTRACT:
A system and method for adjusting the radial tilt, tangential tilt, or a combination of radial and tangential tilt of an optical detection unit in an optical disc reading system can include applying different weighting factors to different signal components depending on which detection area detects the component, measuring a value of a signal characteristic, such as signal-to-noise ratio, of two signals with different sets of weighting factors, and determining an adjustment factor to the radial tilt as a function of the of the measured signal characteristic values.

REFERENCES:
patent: 7808866 (2010-10-01), Lee et al.
patent: 2002/0118615 (2002-08-01), Jeong
patent: 2005/0152240 (2005-07-01), Ma et al.

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