| 发明名称 |
APAPRATUS FOR RECORDING DATA AND METHOD OF PREVENTING ILLEGAL COPYING |
| 摘要 |
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. <IMAGE> |
| 申请公布号 |
PL315880(A1) |
申请公布日期 |
1997.03.03 |
| 申请号 |
PL19960315880 |
申请日期 |
1996.08.30 |
| 申请人 |
SONY CORP |
发明人 |
YAGASAKI YOICHI;KOYANAGI HIDEKI;TAHARA KATSUMI;FUJINAMI YASUSHI |
| 分类号 |
H04N5/913;H04N7/50;(IPC1-7):G11B20/14 |
主分类号 |
H04N5/913 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
