Patent ID: 8588047

Claim:
A storage medium comprising: a first-layer having a burst cutting area, a system lead-in area, a data lead-in area, and a first data area, the burst cutting area being inside the system lead-in area, the system lead-in area being inside the data lead-in area, the burst cutting area and the system lead-in area including an embossed region, the data lead-in area being inside the first data area, and the burst cutting area and the system lead-in area having a first track pitch bigger than a second track pitch of the data lead-in area; and a second-layer having a system lead-out area, a data lead-out area, and a second data area, the second data area being outside the data lead-out area, the data lead-out area being outside the system lead-out area, and the system lead-out area having the first track pitch and the data lead-out area having the second track pitch, wherein a cross-sectional shape of the embossed region is rectangular or trapezoidal, the burst cutting area stores version number information, and the system lead-in area stores information relating to the version number information.