ADJUSTMENT OPTICAL DISK FOR OPTICAL DISK SIGNAL MEASURING INSTRUMENT AND ADJUSTMENT METHOD FOR OPTICAL DISK SIGNAL MEASURING INSTRUMENT USING THE SAID DISK

摘要

PROBLEM TO BE SOLVED: To shorten the optical disk use signal measuring instrument adjusting time. ;SOLUTION: This method is used to adjust a signal measuring instrument for an optical disk by reading returned light reflected by a pit formed on an optical disk and measuring a modulation degree of this pit. At this time, a signal surface is divided into a plural areas and the modulation degree of the same kind of pit in the same area is made the same and the modulation degree is made different in each division area of the same king of pit as the same kind of above-mentioned pit. The modulation degree of each pit is measured by using an adjustment optical disk adjusted to indicate a prescribed value by a standard measuring instrument which can become a standard among the signal measurement instruments for the optical disk, and each measuring instrument is adjusted so as to indicate the same value of the modulation degree as that in the case that the modulation degree of each pit is measured by the above standard measuring instrument over the all areas of this adjustment optical disk.;COPYRIGHT: (C)1997,JPO