Information recording medium, recording method, and reproducing method

作者: Motoshi Ito , Yoshihisa Takahashi , Hiroshi Ueda

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摘要: Provided is an information recording medium, in which when learning (test recording), such as power or strategy learning, performed area for (a a test area) provided each of plurality layers, it possible to minimize the effect on any other layers. In data recorded at least one layers by laser beams entering from surfaces medium. The include first layer and second N-th (N integer not smaller than 3) are disposed order side direction toward light entrance surface enter Each comprises positioned outer peripheral area. radius position different that same

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