Patent ID: 7920460

Claim:
An information recording medium comprising: (a) a lead-in area, said lead-in area including (1) a first track area having a first physical feature that is formed with emboss, (2) a first groove area having a second physical feature different from said first physical feature that is allocated in an inner circumferential side of said first track area, (3) a first connection area for continuously connecting said first track area to said first groove area, (4) a second groove area having a third physical feature different from said first physical feature that is allocated in an outer circumferential side of said first track area, and (5) a second connection area for continuously connecting said first track area to said second groove area; and (b) a data area including a third groove area having a fourth physical feature different from said first physical feature that is allocated in an outer circumferential side of said lead-in area.