ИНФОРМАЦИОННЫЙ НОСИТЕЛЬ ЗАПИСИ, СПОСОБ И УСТРОЙСТВО ДЛЯ ОЦЕНИВАНИЯ ИНФОРМАЦИОННОГО НОСИТЕЛЯ ЗАПИСИ И СПОСОБ ИЗГОТОВЛЕНИЯ ИНФОРМАЦИОННОГО НОСИТЕЛЯ ЗАПИСИ

摘要

In an information recording medium evaluating method of evaluating an information recording medium in which the address of a guide groove (G) wobbling at a specific frequency is recorded by modulating the wobble of the guide groove (G), an address reproduction error rate is estimated from both of the amount of fluctuation in the amplitude of a wobble signal and the signal-to-noise ratio (SNR), a specific range with a low error rate is set, and it is determined whether the error rate is within the specific range.