ADJUSTING DEVICE AND METHOD, MANUFACTURING METHOD OF OPTICAL DISK DRIVE, AND ITS PHASE SHIFT AMOUNT ADJUSTING METHOD AND DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an adjusting method of an optical disk drive that can prevent an adverse influence of a phase shift in a filter circuit while comparatively reducing a cost and a time.;SOLUTION: First, inputting a substitute signal S21 equivalent to a wobble signal to the input side of a filter circuit 44 from an oscilator 71 to detect the phase difference between input and output signals of a HPF46+LPF47 passage on an oscilloscope 72. Then the phase of a recording start timing signal specified by the wobble signal is adjusted and set up according to the detected phase difference. Thus, it is possible to make adjustment for optimizing a recording start position without actually recording/reproducing for each optical disk drive.;COPYRIGHT: (C)2005,JPO&NCIPI