System reactions to the detection of embedded watermarks in a digital host content
First Claim
1. A method for adapting the operation of a system in response to watermarks detected in a digital host content, said method comprising:
- receiving said digital host content;
detecting embedded watermarks in said digital host content;
analyzing the detected watermarks;
adapting the operation of the system in accordance with said analyzing step by at least one of;
permitting normal operation of said system;
conditionally permitting the operation of said system;
prohibiting the normal operation of said system;
modifying a status of said digital host content; and
degrading a quality of said digital host content.
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Accused Products
Abstract
Methods for adapting the operation of a system in response to the detection of embedded watermarks from a digital host content are provided. A digital host content is received and examined for the presence of watermarks. In response to the detection of embedded watermarks and in accordance with the value, type, density or spacing of the detected watermarks, one or more system reactions may take place. These reactions include conditionally allowing the system to resume its normal operation, prohibiting the system from resuming its normal operation, degrading the quality of the digital host content or changing the security status of the digital host content. In response to the extraction of weak watermarks that do not meet the desired system requirements, the extraction operation may be modified or extended to enable the detection of strong watermarks.
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Citations
29 Claims
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1. A method for adapting the operation of a system in response to watermarks detected in a digital host content, said method comprising:
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receiving said digital host content; detecting embedded watermarks in said digital host content; analyzing the detected watermarks; adapting the operation of the system in accordance with said analyzing step by at least one of; permitting normal operation of said system; conditionally permitting the operation of said system; prohibiting the normal operation of said system; modifying a status of said digital host content; and degrading a quality of said digital host content. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for adapting the operation of a system in response to the detection of multiple watermark states from a digital host content, comprising:
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receiving said digital host content; detecting embedded watermarks in said digital host content; analyzing the detected watermarks to determine a watermark state of each of said detected watermarks, each watermark state having a distinct enforcement rule associated therewith; and selecting one of said enforcement rules associated with said detected watermarks for use in operation of the system. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for reducing the computational complexity of watermark extraction from a multi-channel digital host content, comprising:
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receiving a multi-channel digital host content; selecting a subset of received channels of said multi-channel digital host content; combining the selected subset of received channels to form a composite signal; and extracting embedded watermarks from said composite signal. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification