Analog signal generation using a delta-sigma modulator

Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder

Reexamination Certificate

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C341S120000, C341S144000

Reexamination Certificate

active

11197252

ABSTRACT:
A method for generating an analog signal based on samples representing the analog signal includes feeding the samples into a delta-sigma modulator, the delta-sigma modulator outputting a sequence of bits, and introducing a non-linear time-discrete function into a feedback loop between a quantizer element and a delta element of the delta-sigma modulator, where arguments of the non-linear time-discrete function include a current bit and at least one bit previous to the current bit.

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T. Cataltepe et al., “Digitally Corrected Multi-bit Sigma Delta Data Converters”, IEEE International Symposium on Circuits and Systems, May 8, 1989, pp. 647-650.
EP Search Report, Sep. 10, 2004.

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