Patent ID: 7768900

Claim:
A recordable or re-recordable information storage medium which comprises a lead-in area, and a data area allocated in an outer side of the lead-in area, wherein the lead-in area includes a control data zone, the control data zone stores physical format information, the physical format information includes first information common to book types; second information stored in a reserved area of a read-only information storage medium; and third information which is set depending on a kind of second information and is stored in the reserved area of the read-only information storage medium, the first information includes one byte information indicating the book type which indicates read-only information storage medium and a version number of specifications of the book type, the second information is a disc identifier which is one byte information comprising the major digits of a revision number of specifications of the information storage medium and a disc indicator which indicates the information storage medium is recordable or re-recordable, and a definition of the third information depends on the disc identifier and the third information indicates a write strategy.