Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder
Reexamination Certificate
2005-04-12
2005-04-12
JeanPierre, Peguy (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Differential encoder and/or decoder
Reexamination Certificate
active
06879275
ABSTRACT:
A signal processing system includes a look-ahead delta sigma modulator that processes multiple output candidate vectors and an input vector to determine an error vector for each output candidate vector. The error vector is weighted by a weight vector. The weight vector includes, for example, at least one non-unity, non-zero weight element that is different from another weight element to obtain lower signal-to-noise ratios than conventional look-ahead delta-sigma modulators while maintaining linearity associated with the conventional look-ahead delta-sigma modulators. The magnitudes of the weight vector can follow any window function.
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Chambers Kent B.
Cirrus Logic Inc.
Hamilton & Terrile LLP
Jean-Pierre Peguy
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