发明名称 |
Optical recording medium, optical recording medium producing apparatus and optical recording medium producing method |
摘要 |
On DVD-RW (1), groove tracks are meanderingly formed on a groove section on which recording information is recorded, and pit strings where a plurality of phase pits (PI, P1') meanderingly are arranged on the impossible area (UA) and the reproduction exclusive area (RA) which prevent illegal copying. On the respective areas, pit depths (groove depths), duty of the pit strings and wobbling amplitudes are set according to predetermined conditions so that the output levels of the wobble signals extracted based on the wobbling amplitudes can be maintained constant on the respective areas. As a result, synchronous control can be made accurately at the time of recording and reproduction on/from the DVD-RW (1). <IMAGE> |
申请公布号 |
EP1176587(A3) |
申请公布日期 |
2004.02.04 |
申请号 |
EP20010306314 |
申请日期 |
2001.07.23 |
申请人 |
PIONEER CORPORATION |
发明人 |
YAMAGUCHI, ATSUSHI;KATO, MASAHIRO;MURAMATSU, EIJI;OSHIMA, SEIRO;TAGIRI, TAKAO |
分类号 |
G11B7/24;G11B7/005;G11B7/007;G11B7/013;G11B7/26;G11B20/00 |
主分类号 |
G11B7/24 |
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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