| 摘要 |
<p>When a record processing unit writes at a blank track adjacent to a recorded track, the record processing unit sets a track pitch to be narrower than a writing-in width of a recoding element so as to overwrite a portion projecting into the blank track of the recorded track and continuously records information on a disc medium toward one direction in accordance with the track pitch. A first offset correction unit, in which a reading element is positioned at a target track, reads out and corrects a write-read offset, which is discrepancy in position between the recording element and the reading element, from a memory table where the offset measured in advance is stored. A second offset correction unit corrects discrepancy in position between a read center position of the recording element in which the write-read offset is corrected by the first offset correction unit and a center position of an effective track width by the write-once recording. A reproduction processing unit in the corrected state of the write-read offset and the center offset reproduces information of a disc medium by the reading element.</p> |
