Method for manufacturing optical disk media of high-to-low and low-to-high reflectance types

摘要

A method for manufacturing optical disk media of a high-to-low reflection type and a low-to-high reflection type sets both the reflectance of an unrecorded area of the optical disk medium of the high-to-low reflection type and the reflectance of a recorded pit of the optical disk medium of the low-to-high reflection type within a specified reflectance range. An optical disk drive can reproduce data from both the optical disk media without a change of setting for a signal processing system.