US Patent 7668673 Data watermarks created by using an uneven sampling period
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Patent abstract
Input signals are electronically watermarked using an uneven or non-uniform sampling rate. The uneven or non-uniform sampling may be pseudo-random. The uneven or non-uniform sampling meets the Nyquist criterion so that aliasing and loss of content are avoided. The resulting sampling pattern in the sampled data is detectable by a comparison with the original source data.
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Patent Inventor Names
Gordon James Smith0
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US Patent 07668673 Data watermarks created by using an uneven sampling period US Patent 7668673 Data watermarks created by using an uneven sampling period
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Patent Number
076686730
Patent Number
76686730
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Patent Jurisdiction
Patent Number
076686730
Date of Patent
February 23, 2010
0Patent Application Number
111228030
Date Filed
May 5, 2005
0Official Website
Patent Primary Examiner
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US Patent 07668673 Data watermarks created by using an uneven sampling period
Infobox
Is a
Patent jurisdiction
Patent number
07668673
Date of patent
February 23, 2010
Patent application number
11122803
Date Filed
May 5, 2005
Patent primary examiner
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