发明名称 |
VIDEO SCENE CHANGE DETECTION |
摘要 |
A selective encryption encoder consistent with certain embodiments of the invention has vertical and/or horizontal stripes encrypted. In one embodiment, packets are examined in the digital video signal to identify a specified packet type, the specified packet type being packets carrying data representing a video slice wherein the video slice contains a larger amount of data than a threshold (or a subsequent slice). The packets identified as being of the specified packet type are encrypted using a first encryption method to produce first encrypted packets. These first encrypted packets are then used to replace the unencrypted packets in the digital video signal to produce a partially encrypted video signal. The packets of the specified type,can also be multiple encrypted and replaced in the data stream to produce a multiple encrypted video data stream. |
申请公布号 |
CA2413905(A1) |
申请公布日期 |
2003.07.02 |
申请号 |
CA20022413905 |
申请日期 |
2002.12.10 |
申请人 |
SONY ELECTRONICS INC. |
发明人 |
DEROVANESSIAN, HENRY;PEDLOW, LEO M., JR.;CANDELORE, BRANT L. |
分类号 |
G06T7/20;H04B1/66;H04L9/00;H04L9/14;H04L29/06;H04N7/12;H04N7/16;H04N7/167;H04N11/02;H04N11/04;H04N21/2347;H04N21/236;H04N21/2362;H04N21/2365;H04N21/2389;H04N21/258;H04N21/266;H04N21/434;H04N21/436;H04N21/4405;H04N21/4408;H04N21/45;H04N21/454;H04N21/4623;H04N21/63 |
主分类号 |
G06T7/20 |
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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