| 摘要 |
<p>According to one embodiment, a disc shaped multilayered information recording medium, comprising a lead-in area formed at an inner periphery portion, and information recording layers between the inner periphery portion and an outer periphery portion, wherein the lead-in area records information indicating a format of each of the information recording layers, and is configured so that a type of a format used in each of the information recording layers is identified in accordance with the information indicating the format.</p> |
