WRITE-ONCE OPTICAL RECORDING MEDIUM AND DEFECT MANAGEMENT METHOD THEREOF, CONCERNED WITH ASSIGNING TEMPORARY DEFECT MANAGEMENT AREA HAVING FIXED SIZE AND TEMPORARY DEFECT MANAGEMENT AREA HAVING VARIABLE SIZE

摘要

PURPOSE: A defect management method of a write-once optical recording medium is provided to replace a defect area, and to record defect management information by using plural TDMAs(Temporary Defect Management Areas) to use the TDMAs, thereby obtaining sufficient TDMAs. CONSTITUTION: Management information is recorded in the first TDMA having a fixed size. When the recording in the first TDMA is completed, management information is recorded in the second TDMA assigned in a specific zone within a spare zone. The first TDMA is assigned to a lead-in zone. The second TDMA is assigned every spare zone which is variably assigned. The second TDMA is used in opposite direction to the spare zone for replacing a defect area.