Patent ID: 8264926

Claim:
An information recording medium having one or more recording layers including a data recordable area for recording user information signals, a lead-in area provided on an inner periphery of the data recordable area, an inner power calibration area provided further on the inside of the lead-in area for recording test recording patterns, a read end data area, and a recording management area for recording recording management information related to the inner power calibration area, wherein an outer power calibration area is provided in the data recordable area, with an outermost point of recorded user information on the one or more recording layers being on the inner periphery side relative to the outer power calibration area, wherein address information of a point defining an outer boundary for recording additional user information in the data recordable area is in the record management area, with said outer boundary for recording additional user information being inward of the outer power calibration area, wherein the read end data area is provided between the outer boundary for recording additional user information and an inner boundary of the outer power calibration area, and wherein a starting position of recording in the outer power calibration area is determined based on the address information.