Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder
Reexamination Certificate
2005-03-08
2005-03-08
Young, Brian (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Differential encoder and/or decoder
Reexamination Certificate
active
06864818
ABSTRACT:
A delta sigma modulator based analog to digital converter is presented, having a first quantizer and a digital error feedback system comprising a second quantizer and a digital bandpass noise shaping system. The second quantizer provides a second quantized output to the noise shaping system according to the first quantized output, the system analog input, and the noise shaped feedback signal. The digital noise shaping system provides a feedback signal to the first quantizer according to the second quantized output, where the feedback signal is bandpass noise shaped with respect to a quantization error of the first quantizer.
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Brady III Wade James
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
Young Brian
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