초록 ▼

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 representi

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.

대표청구항 ▼

What is claimed is: 1. 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

What is claimed is: 1. 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. 2. The method of claim 1 wherein the decoding key associated with the content or the steganographic signal is encrypted when it is obtained. 3. The method of claim 2 further comprising decrypting the decoding key prior to said act of decoding. 4. The method of claim 1 wherein the content comprises at least one of audio and video content. 5. The method of claim 1 further comprising controlling the content based at least in part on the decoded steganographic signal. 6. The method of claim 1 wherein the registry is accessed on-line. 7. The method of claim 1 wherein the steganographic signal is hidden in the content through use of at least one transform process. 8. 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. 9. The method of claim 8 wherein an encryption key used to encrypt the message is obtained from the on-line registry. 10. The method of claim 8 wherein the content comprises at least one of audio and video. 11. The method of claim 8 wherein the content comprises encrypted content. 12. The method of claim 8 wherein the steganographic signal is hidden in the content through use of at least one transform process. 13. The method of claim 8 wherein said act of communicating the encrypted message to the on-line registry initiates or interacts with an on-line registration process. 14. 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. 15. The method of claim 14 wherein the content comprises at least one of audio and video content. 16. The method of claim 14 further comprising controlling the content based at least in part on the decoded steganographic signal. 17. The method of claim 14 wherein the registry is accessed on-line. 18. The method of claim 14 wherein the steganographic signal is hidden in the content through use of at least one transform process. 19. The method of claim 14 wherein said method is carried out on a hand held computing device. 20. The method of claim 8 wherein said method is carried out on a hand held computing device.