发明名称 |
OPTICAL DISK AND OPTICAL DISK DEVICE |
摘要 |
PURPOSE:To prevent copying with an optical disk in which a region only for reproducing information and a region capable of recording and reproduction mixedly exist, and an optical disk device. CONSTITUTION:This optical disk 10 has a track 13 only for reproduction with disk discriminating information recorded beforehand at a position different from the position of a region only for reproducing information (ROM region) 11 and that of a region capable of recording and reproduction (RAM region) 12. The position of the track 13 is at the outside of a region capable of recording or reproduction with an existing optical disk device. |
申请公布号 |
JPH06150317(A) |
申请公布日期 |
1994.05.31 |
申请号 |
JP19920298922 |
申请日期 |
1992.11.09 |
申请人 |
FUJITSU LTD |
发明人 |
MIHARA MOTONOBU;NANBA YOSHIYUKI |
分类号 |
G11B7/00;G11B7/004;G11B7/007;G11B7/24;G11B7/30;G11B20/10;G11B27/00 |
主分类号 |
G11B7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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