Apparatus and method for multiple description encoding
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United States of America Patent
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Jul 21, 2009
Grant Date -
Jul 22, 2004
app pub date -
Nov 17, 2003
filing date -
Nov 15, 2002
priority date (Note) -
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Abstract
Apparatus and method for generating multiple descriptions of compressed data is disclosed. In the apparatus and method, transform coefficients are generated from input data and quantized. An energy distribution of the quantized transform coefficients is generated. Based on the energy distribution, the transform coefficients are grouped into layers. By entropy coding different number of layers, multiple descriptions of compressed data are generated.
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