Method and apparatus for reduced power consumption ADC...

Details Method and apparatus for reduced power consumption ADC... Method and apparatus for reduced power consumption ADC...

2004-04-30

2008-10-07

Jeanglaude, Jean B (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Nonlinear

C375S240120, C375S260000

Reexamination Certificate

active

07432838

ABSTRACT:
A method for conversion of signals between analog and digital characterised by; applying a non-linear transfer function to an input signal, such that the relation between the quantisation levels of the converter and the input signal vary as a non-linear function of the magnitude of the input signal. The non-linear transfer function is related to the probability density function of the input signal so that larger quantisation bins of the converter correspond to less probable values of the input signal.

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patent: 2002/0168016 (2002-11-01), Wang et al.
Ho et al; “Joint Design of a Channel-Optimized Quantizer and Multicarrier Modulation” IEEE Transactions on Communications, vol. 46, No. 10, Oct. 1998.
Vaishampayan “Design of Multiple Description Scalar Quantizers” IEEE Transactions on Information Theory, vol. 39, No. 3, May 1993.
Gersho et al; “Vector Quantization and Signal Compression” 1992 by Kluwer Academic Publishers, USA (month unknown).

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