Patent ID: 6661744
Filing Date: 2003-12-09
Classification: G11B

Abstract:
An optical recording medium comprising:a test track region corresponding to each zone; and a corresponding map portion of read test track region, wherein: said test track region including a test track region portion which includes one or more test tracks to which a test write and a test read are carried out, and a temperature-based read test track region portion, said temperature-based read test track region portion includes one or more read test tracks, and a recording is made at an optimum write power for a write temperature during a write and a test read is made during a read so that at least an optimum reproducing magnetic field is set, and said corresponding map portion of the read test track region is recorded with an identification symbol which indicates a boundary of a map, a start address and an end address of the read test track for each write temperature information, a start address and an end address of each corresponding data, and an end identification symbol which indicates an end position of the map.