Coded data generation or conversion – Analog to or from digital conversion – Increasing converter resolution
Reexamination Certificate
2007-10-02
2007-10-02
Nguyen, Linh V. (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Increasing converter resolution
C341S143000, C341S155000
Reexamination Certificate
active
11352636
ABSTRACT:
A system and method directed to using a dither signal during conversion of an analog input signal to a digital output signal without summing the dither signal to the analog input signal. Such conversion may include generating a digital dither signal with a pseudo-random noise generator and converting the digital dither signal to an analog dither signal. The analog dither signal is provided to an impedance network that responsively produces a set of reference dither signals proportional to the analog dither signal. A plurality of comparators compares the proportional dither signals to the analog input signal so as to generate a first output code. A dither signal reference code that indicates the effects of passing the dither signal through the analog-to-digital converter is subtracted from the first output code so as to produce a second output code that is a digital representation of the analog input signal.
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Nguyen Linh V.
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