Adaptive prediction filtering for encoding/decoding digital signals in media content
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United States of America Patent
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Nov 20, 2012
Grant Date -
Dec 2, 2010
app pub date -
Mar 30, 2010
filing date -
Jan 22, 2002
priority date (Note) -
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Abstract
A method computes signal characteristics of a host signal in which a digital signal is encoded, and analyzes the characteristics to determine an extent to which the signal characteristics correspond to characteristics of the digital signal. The method adapts parameters of a predictive filter or prediction function applied to the host signal based on the extent to which the signal characteristics correspond to the characteristics of the digital signal. In one embodiment, different filters or filter parameters are selected to match different signal characteristics of the host signal with the characteristics of the digital signal. These predictive filtering techniques also enable optimized encoding of digital signals that adapt the encoding of digital signals to take advantage of predictive filtering in the decoding process.
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