OPTICAL DISC DEVICE, INFORMATION RECORDING METHOD, OPTICAL DISC DEVICE ADJUSTMENT DEVICE, ADJUSTMENT METHOD, MANUFACTURING METHOD, PHASE SHIFT AMOUNT ADJUSTMENT METHOD, AND ADJUSTMENT DEVICE

摘要

The present invention relates to an optical disc apparatus having a wobble signal detection circuit, an information recording method, adjustment apparatus and method for an optical disc apparatus, a fabrication method for an optical disc apparatus, and adjustment method and apparatus for a phase shift amount. In the present invention, a wobble signal based on wobbling of an information track is supplied to the input side of a filter circuit, and the current phase difference between input and output signals to/from an HPF+LPF path is detected. Then, the phase of a recording start timing signal is adjusted corresponding to the detected phase difference. As a result, it is possible to prevent adverse effect due to the phase difference in the filter circuit.