Digital Watermarks
AssigneeDigimarc Corporation
InventorsGeoffrey B. Rhoads, J. Scott Carr
Life of this patent
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Abstract
The present invention relates generally to digital watermarking and steganographic data hiding. In one embodiment a method of rendering content to a user is provided. The rendered content includes a digital watermark embedded therein. In another embodiment, digital watermarking is utilized to facilitate purchase or lease of audio or video content over a network or with a remote computer. In still another embodiment, a compression characteristic is determined, and subsequent steganographic embedding is influenced based on the characteristic. Other embodiments are provided as well.
Claims29
A method comprising:
- receiving packaged content over a computer network as a result of a negotiated transaction involving payment by a user, the content being packaged with at least encryption;
- unpackaging the content for rendering to the user,
- but prior to rendering, embedding a digital watermarking in the unpackaged content,
- the digital watermarking including auxiliary information,
- the auxiliary information comprising a first portion associated with permissible uses of the content and a second portion including information generated upon unpackaging the content, and
- the digital watermarking carrying the auxiliary information in the unpackaged content through alterations to data representing the content;
- and
- rendering the embedded content to the user.
A method comprising:
- through a computerized user interface, receiving a selection identifying an object displayed through the computerized user interface;
- analyzing the object to decode a digital watermark embedded in the object, the digital watermark being embedded in the object through alterations to data representing the object,
- the digital watermark comprising information to facilitate a transaction via a remote computer, the transaction involving purchase or selection of audio or video content associated with the object,
- receiving transaction information through the computerized user interface;
- communicating the transaction information to the remote computer;
- receiving from the remote computer an authorization,
- the digital watermark information cooperating with the authorization to allow access to the audio or video content associated with the object.
A method comprising:
- obtaining first audio content or first video content, the first audio content or first video content comprising a steganographic signal embedded therein;
- using at least a programmed electronic processor, determining at least one compression characteristic associated with the embedded first audio content or first video content;
- influencing steganographic embedding of second audio content or second video content based at least in part on the compression characteristic.
A method comprising:
- obtaining compressed content;
- using at least a programmed electronic processor, determining at least one characteristic associated with compression of the compressed content;
- adjusting steganographic embedding of content based at least in part on the characteristic associated with the compression,
- the steganographic embedding hiding plural-bits in content through alterations to data representing content.
A method comprising:
- obtaining compressed content;
- using at least a programmed electronic processor, determining at least one characteristic associated with compression of the compressed content;
- adjusting detection of a steganographically hidden code based at least in part on the characteristic associated with the compression,
- the steganographically hidden code comprising plural-bits hidden in the content through alterations to data representing the content.
Dependencies are inferred from the claim text.