FIELD: information technologies.
SUBSTANCE: recording medium contains area of access control information, which stores information of access control for provision of reproduction compatibility. Information of access control contains rule used when information of access control is not known to device trying to record over recording medium or reproduction from recording medium. Besides recording medium contains area of status information, in which access control information status data is stored.
EFFECT: it is possible to quickly obtain information on condition of access control information areas.
26 cl, 16 dwg
Authors
Dates
2010-03-27—Published
2005-03-03—Filed