Write onece recording medium, recorder and recording method for write once recording method for write once recording medium, reproducer and reproducing method for write once recording medium, computer program for controlling recording or reproduction, and data structure

摘要

A write-once-type recording medium ( 100 ) on which record data can be recorded only once, provided with: a data area ( 108 ) to record therein the record data; and a shared area ( 104, 105 ) to temporarily record therein evacuation data which is record data to be recorded or already recorded at a position of a defect in the data area and defect management information ( 120 ) including an evacuation source address of the evacuation data, the evacuation data being recorded with one predetermined point which exists in the shared area as a start point, the defect management information being recorded with another predetermined point which exists at a different point from the one point as a start point, in the shared area.