Patent ID: 8144568

Claim:
An information recording medium comprising: a read only area in which read-only information is recorded in advance by formation of embossed pits; a data area in which record information can be recorded; a first management area in which first position information about a position of said read only area is recorded in advance by formation of embossed pits; and a second management area in which, in addition to or instead of (i) the first position information, (ii) second position information about a position of a write protected area in which writing of one portion or all of the record information provided for said data area is disabled, can be recorded, wherein land pre-pits (LPP) are not formed in advance in at least one of said read only area and said first management area, wherein in said second management area, (i) a start address indicating a start position of said read only area or said write protected area, (ii) an end address indicating an end position of said read only area or said write protected area, and (iii) identification information indicating whether the start address and the end address correspond to said read only area or said write protected area, can be recorded as the first or second position information, wherein the record information includes content data, the read-only information includes one portion of reproduction control information for controlling reproduction of the content data, and said write protected area includes another portion of the reproduction control information.