| 发明名称 |
Data recording |
| 摘要 |
<p>Unauthorized copying of a digital video program is prevented by designating a first block and a second block of data in a bit stream encoded by a fixed length code. A portion of the first block is selected as key data and inserted into the second block to indicate that the digital video program is a copy and to prevent illegal copying. &lt;IMAGE&gt;</p> |
| 申请公布号 |
EP0762759(A3) |
申请公布日期 |
1997.06.04 |
| 申请号 |
EP19960306286 |
申请日期 |
1996.08.30 |
| 申请人 |
SONY CORPORATION |
发明人 |
YAGASAKI, YOICHI;KOYANAGI, HIDEKI;TAHARA, KATSUMI;FUJINAMI, YASUSHI |
| 分类号 |
H04N5/913;H04N7/50;(IPC1-7):H04N5/913 |
主分类号 |
H04N5/913 |
| 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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