Patent ID: 7502306

Claim:
A recordable information storage medium comprising: a plurality of information recording layers, wherein each of the information recording layers includes a lead-in area, a user data area, a lead-out area, and a dedicated area arranged at an outer perimeter of the respective information recording layer for use by a drive to read recording information before recording user data, and wherein an amount of user data to be recorded is divided approximately equally into divisions to be distributed among the user data areas, respectively, and distributed among the information recording layers respectively, each user data area has an approximately equal capacity, and is formed on the information recording layers respectively, and a location of each lead-out area varies according to the capacity of the corresponding user data area, wherein each of the information recording layers includes an unrecorded area, where data is unrecorded, between the lead-out area and the dedicated area, and each unrecorded area has an approximately equal capacity and is positioned at the same radial position of the each information recording layer.