DATA CARRIER HAVING RESERVED AREA FOR CONTROLLING DEFECTS AND DATA CONCERNING DEFECTS CONTROL, METHOD FOR MARKING ABOUT RESERVED AREA AND METHOD FOR CONTROLLING DEFECTS

摘要

FIELD: optical data carriers.;SUBSTANCE: primary reserved area, marked out during initialization, is present on data carrier. Also present is auxiliary reserved area, marked after initialization and/or expanded reserved area. Additional reserved area is marked in directly, starting from back portion of data zone.;EFFECT: excluded double replacements and marking of normal blocks as defect ones.;2 cl, 11 dwg