| 摘要 |
PROBLEM TO BE SOLVED: To decide the position of a pickup during the interruption or the like of information recording/reproducing in/from an optical information recording medium so as to reduce the loss of a recording capacity. SOLUTION: During the interruption of information recording/reproducing in/from an optical information recording medium 1, the optical information recording medium 1 is irradiated with a position control light for controlling its own position to the optical information recording medium 1 by a pickup. When the irradiation area 40 of the position control light is included in a write enable area 56, the sensitivity of the write enable area 56 to a light used for information recording/reproducing is lost. Thus, in one of saturation areas 52a, 52b in which information is not recorded any more, and a sensitivity loss permission area 54 permitting a sensitivity loss nearest the irradiation area 40, the position of the pickup is decided to be irradiated with the position control light, and the pickup is moved. COPYRIGHT: (C)2004,JPO&NCIPI
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