Patent ID: 7420909

Claim:
A write-once-type recording medium comprising a plurality of recording layers, each of said plurality of recording layers comprising: a data area to record therein record data; a first control information recording area, which is located on inner circumferential side of said data area, to record therein information for controlling an operation of recording and/or reading in said data area, said control information recording area including a definite defect management area to record therein defect management information of said data area; a second control information recording area, which is located on outer circumferential side of said data area, to record therein information for controlling an operation of recording and/or reading in said data area, said control information recording area including a definite defect management area to record therein defect management information of said data area; a first temporary defect management area to temporarily record therein the defect management information of said data area, said temporary defect management area being located between said first control information recording area and said data area; and a second temporary defect management area to temporarily record therein the defect management information of said data area, said temporary defect management area being located between said second control information recording area and said data area.