System and method for spectral shaping of dither signals

Details System and method for spectral shaping of dither signals System and method for spectral shaping of dither signals

2008-01-08

2008-01-08

Jeanglaude, Jean Bruner (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Increasing converter resolution

C341S143000, C341S200000

Reexamination Certificate

active

07317410

ABSTRACT:
A digital modulator includes a quantizer and a mapper. The quantizer converts a dithered signal value to a voltage. The mapper provides a modulated signal based on the voltage received from the quantizer. The mapper may maintain a substantially identical average centroid for modulated signals provided by the mapper. In an aspect, the mapper is included in a feedback of the digital modulator. The digital modulator may include any number of mappers. For example, a mode selection switch may select one of a plurality of mappers to map a voltage level received from the quantizer to a respective digital sequence.

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