发明名称 |
Star pattern partial encryption method |
摘要 |
In certain embodiments, a method of partially dual encrypting a digital video signal involves examining unencrypted packets of data in the digital video signal to identify a specified packet type. The specified packet type includes packets occurring in a star pattern approximately situated at approximately a center of an image; encrypting packets identified as being of the specified packet type using a first encryption method to produce first encrypted packets; encrypting the packets identified as being of the specified packet type using a second encryption method to produce second encrypted packets; and replacing the unencrypted packets of the specified packet type with the first encrypted packets and the second encrypted packets in the digital video signal to produce a partially dual encrypted video signal. This abstract should not be considered limiting since embodiments consistent with the present invention may involve more, different or fewer elements.
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申请公布号 |
US2007160210(A1) |
申请公布日期 |
2007.07.12 |
申请号 |
US20070713848 |
申请日期 |
2007.03.05 |
申请人 |
CANDELORE BRANT L;DEROVANESSIAN HENRY;PEDLOW LEO M JR |
发明人 |
CANDELORE BRANT L.;DEROVANESSIAN HENRY;PEDLOW LEO M.JR. |
分类号 |
H04N7/167;H04K1/00;H04L9/28;H04L12/56;H04L29/06 |
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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