Integrating digital watermarks in multimedia content
First Claim
1. A method for tracking multimedia content with two or more media signals of different media types, comprising:
- receiving the multimedia content, wherein the multimedia content comprises a first watermark embedded in a first of the two or more media signals, the first watermark comprising a first identifier, wherein the first identifier identifies at least the multimedia content, and wherein the first watermark identifier is embedded by a first embedding site; and
embedding a second watermark in a second of the two or more media signals, the second watermark comprising a second identifier, the second identifier uniquely identifying a user or user device, wherein the second watermark identifier is embedded by a second embedding site that is remote from the first embedding site.
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Accused Products
Abstract
A method for tracking media signals in multimedia content is provided by uniquely identifying the multimedia content with a digital watermark identifier. A video channel is preferably embedded with a first watermark identifier. The first identifier uniquely identifies the multimedia content or the content family. A second digital watermark is embedded in an audio channel of the multimedia content. The second digital watermark uniquely identifies a user or user device. When the multimedia content is found in an unauthorized or unexpected channel, the content can be traced back to its misappropriating source via the user identifier.
324 Citations
19 Claims
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1. A method for tracking multimedia content with two or more media signals of different media types, comprising:
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receiving the multimedia content, wherein the multimedia content comprises a first watermark embedded in a first of the two or more media signals, the first watermark comprising a first identifier, wherein the first identifier identifies at least the multimedia content, and wherein the first watermark identifier is embedded by a first embedding site; and embedding a second watermark in a second of the two or more media signals, the second watermark comprising a second identifier, the second identifier uniquely identifying a user or user device, wherein the second watermark identifier is embedded by a second embedding site that is remote from the first embedding site. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of resolving distortion of a video signal of multimedia content through analysis of an audio signal of the multimedia content, said method comprising:
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detecting a first digital watermark that has been embedded in a transform domain representation of the audio signal, the first digital watermark including a first calibration component, the first calibration component serving to resolve signal distortion; using the first calibration component to locate embedded payload information in the video signal, wherein the payload information varies from a first frame to a second frame. - View Dependent Claims (11)
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12. A method of authenticating multimedia content including two or more media signals of different media types, said method comprising:
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receiving the multimedia content, wherein the multimedia content comprises a first watermark embedded in a first of the two or more media signals, the first watermark comprising a first identifier, wherein the first identifier identifies at least the multimedia content, and wherein the first watermark identifier is embedded at a first embedding site, and a second watermark in a second of the two or more media signals, the second watermark comprising a second identifier, the second identifier uniquely identifying a user or user device, wherein the second watermark identifier is embedded at a second embedding site that is remote from the first embedding site; cross-correlating the first and second identifiers; and determining whether the multimedia content is authentic based at least in part on the cross-correlating. - View Dependent Claims (13, 14)
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15. A method of authenticating multimedia content including at least audio and video, said method comprising:
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receiving the multimedia content, wherein the multimedia content comprises a first watermark embedded in the video, the first watermark including a first message; decoding the first watermark to obtain the first message; and determining whether the multimedia content is authentic based at least in part on the first message, wherein the first message comprises an expected attribute associated with at least the audio. - View Dependent Claims (16)
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17. A method of authenticating multimedia content including at least audio and video, said method comprising:
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receiving the multimedia content, wherein the multimedia content comprises a first watermark embedded in the video, the first watermark including a first message; decoding the first watermark to obtain the first message; and determining whether the multimedia content is authentic based at least in part on the first message, wherein the first message comprises an expected attribute associated with at least the video and audio. - View Dependent Claims (18)
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19. A method of authenticating multimedia content including at least an audio signal and a video signal, said method comprising:
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receiving the multimedia content, wherein the multimedia content comprises a first watermark embedded in the video signal, the first watermark including a first message; decoding the first watermark to obtain the first message; and determining whether the multimedia content is authentic based at least in part on the first message, wherein the multimedia further comprises a second watermark embedded in the audio signal, the second watermark comprising a second message, said method further comprising decoding the second watermark to obtain the second message, and wherein said decoding comprises cross-correlating the first and second message to determine whether the multimedia content is authentic.
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Specification