Coded data generation or conversion – Converter compensation
Reexamination Certificate
2006-06-13
2006-06-13
Barnie, Rexford (Department: 2819)
Coded data generation or conversion
Converter compensation
C341S120000, C341S145000
Reexamination Certificate
active
07061412
ABSTRACT:
An apparatus, method and digital-to-analog converter (DAC) for reducing harmonic error power is provided, suitable for current-mode self-calibration DAC. Unit currents are calibrated one by one based on a reference value and the error distribution of the unit currents appears identical characteristic. According to the calibrated current error distribution, a shift shifts the input digital signal so that the error distribution of the unit current selected by the digital signal is monotonicity and not related to self-calibration current period. A coarse decoder decodes the digital signal as compensation decoding. The harmonic power related to the self-calibration current period is greatly reduced, which improves the signal to noise ratio.
REFERENCES:
patent: 4958155 (1990-09-01), Gulczynski
patent: 5017918 (1991-05-01), Matsusako
patent: 5760726 (1998-06-01), Koifman et al.
patent: 5790060 (1998-08-01), Tesch
patent: 6118398 (2000-09-01), Fisher et al.
patent: 6707404 (2004-03-01), Yilmaz
patent: 6927714 (2005-08-01), Teterwak
patent: 6967609 (2005-11-01), Bicakci et al.
patent: WO 03/100982 (2003-12-01), None
Chen Cheng-Yuan
Wang Shiao-Feng
Barnie Rexford
Jianq Chyun IP Office
Nguyen Linh V.
Sunplus Technology Co. Ltd.
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