Patent ID: 7673097

Claim:
A recording medium storing an executable data structure for managing access of the computer-readable medium, comprising: a user data area storing user data and including a plurality of segment regions each having a start point and an end point that are located at boundaries between recording units; and a control data area storing plurality of access control information units, the access control information units including segment data for identifying at least one of the segment regions in the user data area and control data for controlling the access to the at least one segment region, and the access control information units enlarging a reproduction compatibility of the recording medium, wherein the segment regions identified by one of the access control information units are not overlapped, the access control information is located in at least one of a lead-in area and an inner area of the recording medium and if the segment regions identified by at least two different access control information units are overlapping each other, only operations allowed by all of the access control information units are applied to the overlapping segment regions.