发明名称 |
Steganographic systems and methods |
摘要 |
The present invention relates to steganographic systems and methods. Once claim recites a method including: obtaining video content, wherein the video content comprises a steganographic signal embedded in picture elements of the video content, with multiple instances of the steganographic signal embedded in the picture elements of the video content, the steganographic signal comprising a plural-bit identifier that is uniquely associated with an intended recipient of the video content; encrypting-utilizing a processor or electronic processing circuitry-the video content with an encryption key that comprises mathematical relationship to the plural-bit identifier that is uniquely associated with the intended recipient of the video content; obtaining a decryption key that comprises a cryptographic relationship to the encryption key; communicating the encrypted video content and the decryption key to the intended user of the video content; and maintaining an association of the plural-bit identifier with the intended recipient. Other claims and combinations are provided as well.
|
申请公布号 |
US7620253(B2) |
申请公布日期 |
2009.11.17 |
申请号 |
US20080272432 |
申请日期 |
2008.11.17 |
申请人 |
DIGIMARC CORPORATION |
发明人 |
MILLER MARC D.;LEVY KENNETH L.;RHOADS GEOFFREY B. |
分类号 |
G06K9/46;B42D15/10;G06F17/30;G06K17/00;G06K19/06;G06K19/14;G06K19/18;G06T1/00;G07C9/00;G07D7/00;G07D7/12;G07F7/08;G07F7/10;G07F17/16;G07F17/26;G10L19/00;G11B20/00;H04K1/02;H04N1/00;H04N1/32;H04N7/26;H04Q7/38 |
主分类号 |
G06K9/46 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|