Enhanced watermark computing method
First Claim
1. A method for computing a watermark for a piece of content, the method comprises:
- computing a characteristic pattern representative of the piece of content, the characteristic pattern being associated with content-related information; and
, computing the watermark for the piece of content from the characteristic pattern, the watermark enabling to access the content-related information.
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Abstract
A value added watermarking technology is provided to permit enhanced information services. In such a technology a characteristic pattern is derived for a piece of content and the characteristic pattern is associated with content-related information. The content-related information may be stored in a remote database and retrieved using the characteristic pattern. The characteristic pattern is translated in a watermark to be embedded in the piece of content. After embedding in the piece of content, the watermark enables a user to access the content-related information when playing out marked content with a player equipped with the appropriate software to detect and read the watermark.
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Citations
17 Claims
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1. A method for computing a watermark for a piece of content, the method comprises:
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computing a characteristic pattern representative of the piece of content, the characteristic pattern being associated with content-related information; and
,computing the watermark for the piece of content from the characteristic pattern, the watermark enabling to access the content-related information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14)
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12. A device for watermarking a piece of content, the device comprises:
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deriving means configured to generate a characteristic pattern representative of the piece of content and configured to associate the characteristic pattern with content-related information;
watermarking means configured to compute a watermark for the piece of content on the basis of the characteristic pattern, the watermark enabling to access the content-related information
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15. A device for detecting a watermark in a marked content, the device comprising:
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watermarking detecting means for detecting in the marked content a watermark that was computed from a characteristic pattern representative of the marked content;
accessing means, coupled to the watermarking means, configured to retrieve, using the watermark, content-related information associated with the characteristic pattern.
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16. A signal representing a marked content, the signal comprising:
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a watermark enabling to access content-related information, and wherein the watermark was derived on the basis of a characteristic pattern representative of the marked content , the characteristic pattern being associated with the content-related information.
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17. A software application for carrying out a watermarking method, the method comprising:
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computing a characteristic pattern representative of a piece of content, the characteristic pattern being associated with content-related information; and
,computing a watermark for the piece of content on the basis of the characteristic pattern, the watermark enabling to access the content-related information.
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Specification