发明名称 |
Content selection for partial encryption |
摘要 |
A method of selecting data for multiple carriage partial encryption consistent with certain embodiments involves examining unencrypted packets of data in a digital audio/video data stream to identify a packet type; and selecting packets of the identified packet type for multiple partial encryption, wherein the amount of data to be encrypted is sufficient to render a portion of an entire frame unviewable. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.
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申请公布号 |
US7602912(B2) |
申请公布日期 |
2009.10.13 |
申请号 |
US20070903809 |
申请日期 |
2007.09.25 |
申请人 |
SONY CORPORATION;SONY ELECTRONICS INC. |
发明人 |
CANDELORE BRANT L.;UNGER ROBERT ALLAN;PEDLOW, JR. LEO M. |
分类号 |
H04N7/16;H04N7/167 |
主分类号 |
H04N7/16 |
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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