Coded data generation or conversion – Converter compensation
Reexamination Certificate
2008-05-27
2008-05-27
Nguyen, Khai M. (Department: 2819)
Coded data generation or conversion
Converter compensation
C341S120000, C341S144000, C341S145000
Reexamination Certificate
active
11548486
ABSTRACT:
Methods, articles of manufacture and systems for the correction of static mismatch errors in D/A converters, where an input word, being the digital representation of an analog input signal, is divided into one most significant part, msb-word, and one least significant part, lsb-word, where msb-word is represented by msb-bits and lsb-word is represented by lsb-bits. Correction is performed by setting the effective weight of the least significant msb-bit to be less than the total sum of all lsb-bits, implementing a first look up table, LUT1, containing the most significant part of the error, so that a corrected msb-word, c-msb-word, would be equal to the msb-word plus a value in LUT1representing the msb-word, and implementing a second look up table, LUT2, containing the least significant part of the error, so that a first corrected output, c1-output, would be equal to c-msb-word plus a value in LUT2representing the c-msb-word added to the lsb-word.
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Eklund Jan-Erik
Rudberg Mikael
Infineon - Technologies AG
Nguyen Khai M.
Patterson & Sheridan L.L.P.
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