| 发明名称 |
Multimedia protection system divides data for part encryption with variable length key |
| 摘要 |
A multi media protection system divides audio and video data into encrypted and unencrypted media and user data, key locked crypto melody data and key data size variable during transmission with use condition data in the melody and key.
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| 申请公布号 |
DE10164135(A1) |
申请公布日期 |
2003.07.17 |
| 申请号 |
DE20011064135 |
申请日期 |
2001.12.30 |
| 申请人 |
LANG, JUERGEN K. |
发明人 |
LANG, JUERGEN K.;BING, URSULA MARIA |
| 分类号 |
G11B20/00;H04N5/913;H04N7/16;H04N7/167;(IPC1-7):H04L9/28;H04L9/32 |
主分类号 |
G11B20/00 |
| 代理机构 |
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