Patent ID: 8780684

Claim:
A non-transitory machine readable information storage medium for storing data reproducible by a recording or reproducing apparatus, the non-transitory machine readable information storage medium comprising: a control area, said control area being configured to store, within a data structure, information usable by said recording or reproducing apparatus to record or reproduce the data on or from the non-transitory machine readable information storage medium, the data structure being configured to store a version corresponding to a specification, a revision number of recording speed, and an extended part version field, wherein the data structure is configured to store information relating to recording power corresponding to the recording speed, the data structure is configured to store information specifying single layer or dual layer or another, the control area includes data ID, the data ID is configured to specify reflectivity, the data ID is configured to specify an area type corresponding to a lead-in area or another area, the lead-in area includes the control area, and the data ID includes a layer number.