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METHOD OF MEASURING CHRACTERISTIC DATA FOR MULTILEVEL OPTICAL RECORDING MEDIUM, AND EVALUATION METHOD FOR MULTILEVEL OPTICAL RECORDING MEDIUM
METHOD OF MEASURING CHRACTERISTIC DATA FOR MULTILEVEL OPTICAL RECORDING MEDIUM, AND EVALUATION METHOD FOR MULTILEVEL OPTICAL RECORDING MEDIUM
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机译:多级光学记录介质的特征数据测量方法及多级光学记录介质的评价方法
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摘要
A method of measuring characteristic data for a multilevel optical recording medium, comprising measuring (steps 31-33) characteristic data for a multilevel optical recording medium (1) by using a two-value recording/reproducing evaluation device. This multilevel optical recording medium (1) is so produced as to be capable of multilevel recording with light reflectance with respect to a reproducing laser beam controlled in multiple stages by switching at least one of a recording laser beam irradiation time and an irradiation power and by changing the transmittance of a recording layer (12) by a recording laser beam. Accordingly, since characteristic data for a multilevel optical recording medium (1) can be measured without newly purchasing or producing a dedicated multilevel recording/reproducing evaluation device, the measuring costs can be reduced.
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