专利名称：Optimization methods for the insertion,
protection, and detection of digitalwatermarks in digital data
发明人：Scott A. Moskowitz申请号：US11599964申请日：20061115
公开号：US20080046742A1公开日：20080221
摘要：Disclosed herein are methods and systems for encoding digital watermarks intocontent signals. Also disclosed are systems and methods for detecting and/or verifyingdigital watermarks in content signals. According to one embodiment, a system forencoding of digital watermark information includes: a window identifier for identifying asample window in the signal; an interval calculator for determining a quantization intervalof the sample window; and a sampler for normalizing the sample window to providenormalized samples. According to another embodiment, a system for pre-analyzing adigital signal for encoding at least one digital watermark using a digital filter is disclosed.According to another embodiment, a method for pre-analyzing a digital signal forencoding digital watermarks comprises: (1) providing a digital signal; (2) providing a digitalfilter to be applied to the digital signal; and (3) identifying an area of the digital signalthat will be affected by the digital filter based on at least one measurable differencebetween the digital signal and a counterpart of the digital signal selected from the groupconsisting of the digital signal as transmitted, the digital signal as stored in a medium,and the digital signal as played backed. According to another embodiment, a method for
encoding a watermark in a content signal includes the steps of (1) splitting a watermarkbit stream; and (2) encoding at least half of the watermark bit stream in the contentsignal using inverted instances of the watermark bit stream. Other methods and systemsfor encoding/decoding digital watermarks are also disclosed.
申请人：Scott A. Moskowitz
地址：Sunny Isles Beach FL US
国籍：US
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