| 摘要 |
In an optical disc apparatus, before the information already existing on an optical disc is erased, the information recorded in a user data area of the optical disc is test-erased with laser light of previously set erasing power first, then after test recording of information in the user date area and evaluation of the test-recorded information in terms of recording quality, erasing power for actually erasing desired information is set in accordance with evaluation results.
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