| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical disk reproducing device capable of correcting the crosstalk components in an FE signal so as to offset these components. SOLUTION: The optical disk reproducing device having an optical pickup adopting an astigmatism system for focus servo error detection for controlling a light spot for reading in follow-up to the wobbling of a surface in order to read the information recorded on an optical disk 14 has a correction control system 44 which memorizes the push-pull error signal of the main spot and the amplitude and phase relation for one period component crossing in inside and outside diameter directions of a focus stroke in order to suppress the crosstalks to be included into the focus errors by the groove crossing to cross the lands and grooves formed at the optical disk, calls out this relation data with the push-pull signal by the sub-spot or main spot apart about half the track pitch to form a focus stroke signal, makes computation with the focus signal by the main spot and offsets the groove crossing crosstalks. As a result, the crosstalk components in the FE signal are so corrected as to be offset.
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