Apparatus and method for multiple description encoding
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United States of America Patent
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Jul 14, 2009
Grant Date -
Sep 7, 2006
app pub date -
Apr 26, 2006
filing date -
Nov 15, 2002
priority date (Note) -
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Abstract
An apparatus and method for generating multiple descriptions of compressed data are comprised. Generally, a quantized bit stream is generated using a reference quantization step. The quantization bet stream is then re-quantized using a first quantization step to generate a first description of compressed data, wherein the first quantization step is determined based on a first required scaling of the reference quantization step. The quantized bit stream may also be re-quantized using a second quantization step to generate a second description of compressed data, wherein the second quantization step is determined on a second required scaling of the reference quantization step.
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