作者: Nobuyuki Takamori , Hirohisa Yamada , Hideharu Tajima , Masaki Yamamoto , Go Mori
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摘要: A super resolution medium (1) is provided with an information signal region (11) where a content, such as video or audio recorded and test read (12) reproduction setting value adjustment for adjusting reproduction. shortest mark length on first prepit row formed in the shorter than of optical system limit playback apparatus. The types lengths, (12), second are same part all lengths row. Further, includes having payback Still further, each rows has at least three lengths. With this arrangement, optimum can be performed (1).