METHOD FOR RECORDING INFORMATION TO OPTICAL DISK AND INFORMATION-STORAGE MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide a method for recording information to an optical disk which can accurately read individual information included in bar codes and precisely verify information to be written with information written in any optical disks having data-bearing surfaces of multilayer or monolayer. SOLUTION: In a bar code-reading mechanism, a reading-targeted laser light for reading the individual information receives high-frequency superposition, and an interference which occurs in the disk of multiplayer is reduced. The waveform of a signal from a photo-detector is adjusted to the influences of the interference generated in the disk of multiplayer and reflection from a printing layer in a pit art disk of monolayer, and the accurate individual information is extracted.