| 摘要 |
There is provided an optical disc recording/reproduction device in which a tracking drive offset amount ( 21 ) is given to a tracking drive signal ( 19 ), a beam spot position irradiated on a photo-detector ( 7 ) is shifted by a servo controller ( 18 ), and by using an optical disc on which pits are recorded or not recorded, a CPU ( 16 ) detects some or all of the divided wobble signal balance, a lens error signal, a wobble jitter value, and an AYIP read error count. The CPU ( 16 ) causes a memory ( 17 ) to store at least one of the tracking drive offset amounts at which the wobble signal balance is uniform, the lens error signal reference voltage and wobble jitter value are minimum, and the AYIP read error count as well as the respective tracking drive offset amounts. Furthermore, the CPU ( 16 ) controls the beam spot position by adding the tracking drive offset amount read out from the memory ( 17 ) to the tracking drive signal ( 19 ) when performing recording or reproducing to/from the optical disc.
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