公开(公告)号：EP1726117A2

公开(公告)日：2006-11-29

申请号：EP05729199.9

申请日：2005-03-18

申请人： Digimarc Corporation

发明人： SHARMA, Ravi, K. ,  RAMOS, Daniel, O. ,  RODRIGUEZ, Tony, F. ,  LEVY, Kenneth, L.

IPC分类号： H04L9/00

CPC分类号： G06T1/0071 ,  G10L19/018 ,  H04L9/3236 ,  H04L9/3247 ,  H04L2209/34 ,  H04L2209/608 ,  H04N1/32144 ,  H04N1/32149 ,  H04N2201/3236 ,  H04N2201/3281 ,  H04N2201/3284

摘要： The present invention provides a method of securing messages steganographically embedded in media (e.g., printed or electronic objects, audio, and video). In one implementation, a message inclues a first portion and a second portion. The first portion includes a first message and a first checksum, which are encrypted with a private key. The encrypted first protion is combined with the second portion. The second portion includes a second message and a second checksum. The combined encrypted first portion and the second portion form a signature. The signature is encrypted wth a common key or universal key, perhaps after error correction coding. The private key is uniquely associated with an entity such as a document issuing jurisdiction.

公开(公告)号：EP1257921A1

公开(公告)日：2002-11-20

申请号：EP01909242.8

申请日：2001-02-14

申请人： Digimarc Corporation

发明人： RAMOS, Daniel, O. ,  JONES, Kevin, C. ,  RHOADS, Geoffrey, B.

IPC分类号： G06F13/00 ,  G06F15/16 ,  H04L9/00

CPC分类号： G06Q30/02 ,  G06F17/30876 ,  G06F2221/0737 ,  G06Q10/107

摘要： Watermark encoders and decoders are integrated into operating systems, Internet browsers (300), media players, and other applications and devices. Such integration enables the watermark-enabled application (304) or device to provide additional functionality and information (302) available via the watermark. The watermark, for example, may link to metadata or actions related to a media object. To exploit this watermark enabled functionality, the integrated application uses a watermark decoder to access the related metadata and actions. The user interface of the integrated application is enhanced to present metadata and actions linked via the watermark. Similarly, watermark encoders may be integrated into applications to convert media objects into enhanced, watermarked objects.

摘要翻译： 水印编码器和解码器集成到操作系统，互联网浏览器（300），媒体播放器以及其他应用程序和设备中。 这样的集成使得启用水印的应用程序（304）或设备能够提供经由水印可用的附加功能和信息（302）。 例如，水印可链接到与媒体对象相关的元数据或动作。 为了利用这种启用水印的功能，集成应用程序使用水印解码器来访问相关的元数据和动作。 集成应用程序的用户界面得到了增强，可呈现通过水印链接的元数据和动作。 类似地，水印编码器可以被集成到应用程序中以将媒体对象转换为增强的，加水印的对象。