FIELD: information technology.
SUBSTANCE: on a recordable optical disc with at least one recording layer, information on recording speed and recording strategy at that recording speed is recorded as part disc management data such that, standard disc management data can equally be used to record and playback data. At least one disc management data is recorded in the control region in the order of allowable recording speeds and at one least disc management data is recorded at the same recording speed in the order of recording layers.
EFFECT: compatibility of standards and higher speed of reading from high density discs.
32 cl, 10 dwg
