Scalable encoder and decoder for scaled stream

Details Scalable encoder and decoder for scaled stream Scalable encoder and decoder for scaled stream

2005-12-27

2005-12-27

Nguyen, John B (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

C375S259000, C375S295000

Reexamination Certificate

active

06980143

ABSTRACT:
A scalable encoder having a first encoder, a decoder and a second encoder includes, above that, a phase distorter to reduce a non-linear frequency-dependent phase distortion introduced by the first encoder or by the decoder, which results in an increased difference signal of a comparator. Thus, a difference signal with less energy is obtained that the second encoder can encode with less bits, that is with a higher bit efficiency.

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Koishida, K. et al.; A 16-kbit/s Bandwidth Scalable Audio Coder Based on the G.729 Standard; 2000; IEEE, no month.
Skowronski, J.; A nonlinear transform for subband image coding; 1999; Elsevier ScienceB.V., no month.

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