Defect management method of optical disk, optical disk reproducing apparatus and optical disk recording apparatus

摘要

The optical disc recording apparatus (1), if the determined recording sub information is recorded being superimposed on the main information and the main information is whether or not successful, it is determined as defective area, the main information , and registration information for or the sub-information, and thigh recorded in the alternative area the sub information and the main information, and associates and alternative areas relocate this defect region and defect region in the defect management area within the optical disc and a system control unit for (14).