Optical disk apparatus, method for calculation of amount of...

Details Optical disk apparatus, method for calculation of amount of... Optical disk apparatus, method for calculation of amount of...

2007-03-27

2007-03-27

Wellington, Andrea (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S044320, C369S053330

Reexamination Certificate

active

09994335

ABSTRACT:
An optical disk apparatus has an optical head having a lens of converging light from a light source onto an optical disk and a photodetector for detecting the light thus converged and then reflected from the optical disk. A tracking error signal is generated in order to perform tracking control on the basis of the detected light. A disk tilt DT is detected to indicate the amount of tilt of the optical head relative to the optical disk. A calculation is performed to calculate a lens shift LS indicating the amount of shift of the lens relative to the optical head, according to a predetermined rule on the basis of the generated tracking error signal and the detected disk tilt DT.

REFERENCES:
patent: 5828637 (1998-10-01), Kim
patent: 2000-163765 (2000-06-01), None
English Abstract Translation of JP-2000-163765.

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