Coded data generation or conversion – Analog to or from digital conversion – Nonlinear
Reexamination Certificate
2011-02-01
2011-02-01
JeanPierre, Peguy (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Nonlinear
C341S155000
Reexamination Certificate
active
07880652
ABSTRACT:
This invention relates to adjusting a filter of a time-continuous Sigma-Delta converter arranged to convert an analog input signal (Sin) to a digital output signal. A control signal indicative of a gain of the filter is provided, and the gain of the filter is adjusted in dependence of the control signal. The control signal is provided from the digital output signal of the Sigma-Delta converter. In this way the performance of the Sigma-Delta converter can be improved in a simple way that requires no or few additional analog components, and the Sigma-Delta converter itself is used to adjust its performance. Using a signal from the digital domain of the Sigma-Delta converter is advantageous in that it is typically easier, faster and more precise to process signals in the digital domain.
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Jean-Pierre Peguy
Potomac Patent Group PLLC
Telefonaktiebolaget L M Ericsson (publ)
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