Method and System for Managing and Controlling Electronic Media
AssigneeDigimarc Corporation
InventorGeoffrey Rhoads
Life of this patent
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Abstract
The present invention provides methods and systems for identifying content to help ensure legal uses of the content. In one implementation a method is provided to include obtaining content, wherein the content comprises a steganographic signal hidden therein through subtle changes to data representing the content; accessing a registry including a plurality of steganographic decoding keys to obtain a key associated with the content, wherein at least some of the keys are encrypted; obtaining the key associated with the content; and decoding the steganographic signal hidden in the content utilizes at least the key associated with the content.
Claims20
A method comprising:
- obtaining content, wherein the content comprises a steganographic signal hidden therein through subtle changes to data representing the content;
- accessing a registry including a plurality of steganographic decoding keys to obtain a decoding key associated with the content, wherein at least some of the keys are encrypted;
- obtaining the decoding key associated with the content or the steganographic signal;
- decoding the steganographic signal hidden in the content utilizing at least the decoding key associated with the content or the steganographic signal.
A method comprising:
- obtaining content,
- wherein the content comprises a steganographic signal hidden therein through subtle changes to data representing the content, and
- wherein the steganographic signal comprises at least a message;
- decoding the steganographic signal hidden in the content to obtain the message;
- encrypting the message;
- communicating the encrypted message to an on-line registry;
- and
- receiving at least an acknowledgement from the on-line registry.
A method comprising:
- obtaining content, wherein the content comprises a steganographic signal hidden therein through subtle changes to data representing the content;
- accessing a registry including a plurality of steganographic decoding keys to obtain at least one key associated with the content, wherein at least some of the keys are encrypted;
- receiving the key associated with the content or the steganographic signal, wherein the key associated with the content is encrypted;
- decrypting the key;
- and
- decoding the steganographic signal hidden in the content utilizing at least the key associated with the content or the steganographic signal.
Dependencies are inferred from the claim text.