Sigma delta modulator
US7928876B2 · kind B2 · utility
8Cited by
6References
33Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 11, 2005 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Sep 16, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/492
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method of controlling a sigma delta modulator with a loop which establishes a signal transfer function, STF, and a quantization noise transfer function, NTF, of the sigma delta modulator, wherein the sigma delta modulator receives an input signal, x(n), and provides a modulated output signal, y(n) in response to the input signal. The method is characterized in comprising the step of controlling the sigma delta modulator to change the quantization noise transfer function, NTF, in response to a signal feature, A(n), which is correlated with the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.