OPTICAL INFORMATION RECORDING MEDIA AND ITS RECORDING AND REPRODUCING METHOD AND OPTICAL INFORMATION RECORDING AND REPRODUCING DEVICE

摘要

PROBLEM TO BE SOLVED: To stably reproduce an address signal without reduction of recording density of the address signal and enlargement of area of address part by reproducing a data part with a light beam having the first reproducing power and reproducing an address part with a light beam having the second reproducing power higher than the first reproducing power. SOLUTION: A signal reproducing system 6 reproduces an address gate signal 820 that defines a section where the address signal exists and forms a switching control signal for a reproducing power. Here, in the section corresponding to the address part, a reproducing power switching part 13 selects an output of the second reproducing power setting part 12 composed of higher setting power than the first reproducing power setting part. Thus the reproduced power from a light pick-up 3 results in higher value in the address part compared to that in the data part, and a reproduced amplitude at the address part enlarges and an error generation when demodulating the address can be suppressed.