| 摘要 |
<p>TO PROVIDE A RECORDING METHOD OF A MULTI-LAYERED OPTICAL DISK (1) HAVING THREE OR MORE RECORDING LAYERS, FOR PERFORMING RECORDING WHILE SECURING SUFFICIENT TEST AREA (12) WITHOUT REDUCING USER DATA AREAS, AND WHILE SUITABLY CONTROLLING THE POWER OF LASER (34) BEAM IRRADIATED ONTO EACH OF THE LAYERS. THE METHOD USES AN OPTICAL DISC (1) WHICH HAS AT LEAST A FIRST RECORDING LAYER (411) AND A SECOND RECORDING LAYER (412) LOCATED ON THE SIDE NEARER TO THE LIGHT INCIDENT SURFACE THAN THE FIRST RECORDING LAYER (411), AND WHICH RESPECTIVELY HAS A FIRST TEST AREA (12) CONFIGURED BY A PLURALITY OF SEGMENTS (123) IN THE FIRST RECORDING LAYER (411) AND A SECOND TEST AREA (12) CONFIGURED BY A PLURALITY OF SEGMENTS (123) IN THE SECOND RECORDING LAYER (412). FURTHER, THE METHOD IS CONFIGURE SUCH THAT THERE IS DEFINED BEFOREHAND A PREDETERMINED RADIAL DISTANCE L CORRESPONDING TO RELATIVE PRECISION OF RADIAL POSITIONS BETWEEN THE PLURALITY OF LAYERS AND THE OPTICAL SPOT (32) DIAMETER, AND THAT WHEN AN ARBITRARY SEGMENT (123) IN THE SECOND TEST AREA (12) IS TEST-RECORDED, A SEGMENT (123) IN THE FIRST TEST AREA (12), THE RADIAL DISTANCE OF WHICH FROM THE RECORDED TEST AREA (12) IN THE SECOND TEST AREA (12) IS WITHIN THE RANGE OF THE PREDETERMINED RADIAL DISTANCE L, IS SET AS A SEGMENT (123) IN WHICH THE TEST RECORDING IS NOT PERFORMED. THEREBY, EVEN IN THE CASE WHERE THE REDIAL POSITIONS OF THE TEST AREAS OF THE PLURALITY OF LAYERS ARE SUBSTANTIALLY OVERLAPPED WITH EACH OTHER, IT IS POSSIBLE TO PRECISELY PERFORM THE LEARNING OF OPTICAL POWER. FOR THIS REASON, IT IS POSSIBLE TO USE AND ARRANGE THE TEST AREAS OF THE PLURALITY OF LAYERS WITHOUT WASTE. FURTHER, THE LEARNING OF RECORDING POWER CAN BE PERFORMED WITHOUT RECEIVING THE INFLUENCE OF THE RECORDED STATE OF THE OTHER LAYERS, SO THAT THE ACCURACY OF THE LEARNING OF RECORDING POWER CAN BE IMPROVED. THEREBY, IT IS POSSIBLE TO IMPROVE THE QUALITY OF RECORDING AND THE RELIABILITY OF RECORDED DATA.</p> |
