| 发明名称 |
INFORMATION RECORDING APPARATUS, INFORMATION REPRODUCING APPARATUS, AND INFORMATION RECORDING MEDIUM |
| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent effectively illegal copy in an information recording apparatus, an information reproducing apparatus, and an information recording medium. <P>SOLUTION: Main data is recorded by length and interval of pits or marks, sub-data is ciphered by random numbers and recorded by variation of a width direction of pits or marks. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
| 申请公布号 |
JP2006209966(A) |
申请公布日期 |
2006.08.10 |
| 申请号 |
JP20060092799 |
申请日期 |
2006.03.30 |
| 申请人 |
SONY CORP |
发明人 |
YAMAMOTO MASANOBU;KOBAYASHI SEIJI;FUJIMIYA MITSUHARU |
| 分类号 |
G11B7/0045;G11B7/005;G11B7/007;G11B7/125;G11B7/26;G11B20/10 |
主分类号 |
G11B7/0045 |
| 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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