Method and apparatus for recording and reproducing optical information, and recording medium

摘要: Ordinary optical disks need the resetting of recording conditions in course to cope with changes ambient temperature, laser and medium's sensitivity. Optical for super-resolution reproduction which are intended reproduce record marks smaller than resolution, thereby increasing density, as well condition because quality reproduced signals depends largely on power reproduction. The is therefore changed test detect deviation from optimum value obtain power. In this case, it also desirable change proportion recording.