发明名称 |
MOTION PICTURE ENCRYPTION METHOD AND APPARATUS WITH VARIABLE SECURITY |
摘要 |
A method of variable security encryption, comprising the steps of: receiving a digital signal; selecting a variable number of data units from the digital signal; encrypting the selected data units; and replacing the selected data units with the corresponding encrypted data units; in which the number of data units selected can be varied. The resulting encrypted digital signal can be decrypted by reversing the encryption process.
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申请公布号 |
WO03007608(A1) |
申请公布日期 |
2003.01.23 |
申请号 |
WO2001GB05232 |
申请日期 |
2001.11.27 |
申请人 |
AMINO HOLDINGS LIMITED;GILBERT, MARTYN |
发明人 |
GILBERT, MARTYN |
分类号 |
H04N7/167;(IPC1-7):H04N7/167;H04L9/06 |
主分类号 |
H04N7/167 |
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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