Inserting watermarks into portions of digital signals
First Claim
1. A method comprising:
- identifying, via a processor, a plurality of candidate portions in a digital data signal;
generating, via the processor, a digital watermark message based on at least one predetermined criterion; and
embedding, via the processor, the digital watermark message in a subset of the plurality of candidate portions.
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Abstract
The present invention relates generally to watermarking. In one implementation a method of pre-analyzing a digital signal for encoding digital watermarks using a digital filter comprising determining what changes in the digital signal will be affected by the digital filter is provided. In another implementation a system for pre-analyzing a digital signal for encoding at least one digital watermark using a digital filter is provided. The method includes a processor for identifying an area of the digital signal that will be affected by the digital filter; and an encoder for encoding the at least one digital watermark in the digital signal, the encoder encoding the at least one digital watermark so as to avoid the at least one area of the digital signal that will be affected by the digital filter. Other implementations are provided as well.
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Citations
20 Claims
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1. A method comprising:
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identifying, via a processor, a plurality of candidate portions in a digital data signal; generating, via the processor, a digital watermark message based on at least one predetermined criterion; and embedding, via the processor, the digital watermark message in a subset of the plurality of candidate portions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A tangible computer-readable medium having instructions stored thereon, the instructions comprising:
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instructions to identify a plurality of candidate portions in a digital data signal; instructions to generate a digital watermark message to be embedded based on at least one predetermined criterion; and instructions to embed the digital watermark message in a subset of the plurality of candidate portions. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A system comprising:
a processor configured to; identify a plurality of candidate portions in a digital data signal; generate a digital watermark message based on at least one predetermined criterion; and embed the digital watermark message in a subset of the plurality of candidate portions.
Specification