| 摘要 |
When an optical information recording/reproducing apparatus receives a request for accessing to an optical information recording medium from a host computer, an optical pickup unit reads an access-restriction code that is recorded on a ROM data-layer of the optical information recording medium, a comparing unit compares the read access-restriction code with a key unique-code that is recorded on an IC card, and a controller determines whether accessing to the optical information recording medium is allowable based on a result of the comparison.
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