发明名称 |
Video slice and active region based multiple partial encryption |
摘要 |
A selective encryption encoder and method of dual selective encryption. The selective encryption encoder has a packet identifier that identifies packets of at least one specified packet type, the at least one specified packet type being any of a plurality of packet types including packets containing a video slice headers or packets carrying data appearing in an active area of the image. A packet duplicator duplicates the identified packets to produce first and second sets of the identified packets. The packets are sent to and from a primary encryption encoder to encrypt the first set of identified packets under a first encryption method. A secondary encrypter encrypts the second set of identified packets under a second encryption method.
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申请公布号 |
US7376233(B2) |
申请公布日期 |
2008.05.20 |
申请号 |
US20020273905 |
申请日期 |
2002.10.18 |
申请人 |
SONY CORPORATION;SONY ELECTRONICS INC. |
发明人 |
CANDELORE BRANT L.;DEROVANESSIAN HENRY;PEDLOW, JR. LEO M. |
分类号 |
H04L9/28;H04N7/167 |
主分类号 |
H04L9/28 |
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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