| 摘要 |
THE PRESENT INVENTION RELATES TO A METHOD FOR THE DEMOULATION OF THE ADIP DATA OF A WOBBLE SIGNAL OF AN OPTICAL RECORDING MEDIUM, WHEREBY THE WOBBLE SIGNAL COMPRISES DIFFERENT TYPES OF WOBBLE PERIODS, AND TO AN APPARATUS FOR READING FROM AND/OR WRITING TO OPTICAL RECORDING MEDIA USING SUCH METHOD.ACCORDING TO THE INVENTION , THE METHOD COMPRISES THE STEPS OF - TRANSFORMING THE FREQUENCY AND/OR PHASE OF HARMONIC DEVIATIONS WITHIN THE WOBBLE SIGNAL TO AMPLITUDE DEVIATIONS, - DETECTING THE AMPLITUDE DEVIATIONS, AND - DETECTING A CURRENT TYPE OF WOBBLE PERIOD FROM THE DETECTED AMPLITUDE DEVIATIONS.FIG. 5
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