Patent ID: 7231731

Claim:
An information record medium, comprising: a reproduction-dedicated first embossed area in which control data is prerecorded as first phase pits; a second embossed area in which second phase pits are formed, and a record area in which a groove is formed and in which information is capable of being recorded, wherein the first phase pits have a depth which is greater than a depth of the second phase pits and a depth of the groove, wherein the information record medium has a shape of a disc, wherein the reproduction-dedicated first embossed areas, the second embossed area, and the record area are provided in different areas in a direction of a radius of the information record medium respectively, wherein the reproduction-dedicated first embossed area and the second embossed area are located at an inner radius of the information record medium with respect to the record area, wherein the record area comprises pre-pits having address information indicating a recording position on the information record medium adjacent to the groove, wherein the second embossed area comprises pre-pits having address information indicating a recording position on the information record medium adjacent to the second phase pits, and wherein the reproduction-dedicated first embossed area has no pre-pits having address information adjacent to the first phase pits.