Patent ID: 7471617

Claim:
An optical disc medium comprising: a system area; and a data area following said system area, wherein a plurality of sets of an extended record control data area, a bordered area, and a border are possibly established in said data area continuously from said system area, wherein a first set of said plurality of sets does not include said extended record control data area, wherein a user data is recorded in each of said bordered areas, wherein in each of said plurality of sets other than said first set, a record control data, associated with said user data which is recorded in said bordered area of the set, is recorded in said extended record control data area, wherein a record control data associated with said user data recorded in said boarded area of said first set is recorded in said system area, wherein a control data associated with said extended record control data area of each of said plurality of sets, other than said first set, is recorded in said system area, wherein in each of said plurality of sets other than said first set, said extended record control data area, said bordered area, and said border area are established in this order, wherein said control data comprises a start address and end address of said extended record control data area, and wherein said control data further comprises said record control data which is recorded in said extended record control data area of each of said plurality sets other than said first set.