Patent ID: 7933192

Claim:
An information recording medium comprising: a first recording layer in which a first recoding track path for recording record information, is formed; a second recording layer which is disposed on said first recording layer and in which a second recoding track path for recording the record information, is formed in an opposite direction to the first recording track path; and further, a first buffer area (i) for preventing a recording or reproduction position from deviating from said first recording layer or said second recording layer, and (ii) for layer jump, on an outer circumferential edge portions of said first recording layer and said second recording layer, one portion of said first buffer area being formed, on the first recording track path and the second recording track path, in advance as a pre-recording area, of embossed pits or pits obtained by irradiation of recording laser, and said information recording medium further comprising a management area to record therein identification information which is start/end address information indicating a start or end position of the pre-recording area.