Apparatus and method for multiple description encoding

Coded data generation or conversion – Digital code to digital code converters

Reexamination Certificate

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C341S051000

Reexamination Certificate

active

07061404

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 quantized bit 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 based on a second required scaling of the reference quantization step.

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