Coded data generation or conversion – Converter compensation
Reexamination Certificate
2008-03-03
2010-06-01
Williams, Howard (Department: 2819)
Coded data generation or conversion
Converter compensation
C327S307000, C341S120000
Reexamination Certificate
active
07728747
ABSTRACT:
Comparator chain total offset, static and dynamic, is reduced by injecting a compensation quantity in at least one point in the chain of comparator components. The compensation quantity is determined by providing the comparator chain with calibration signals having equal values and evaluating the output states of the comparator chain. The compensation quantity is adjusted until the probabilities of high and low output states are substantially equal and a calibrated value for the compensation is determined.
REFERENCES:
patent: 4251803 (1981-02-01), Debord et al.
patent: 4380005 (1983-04-01), Debord et al.
patent: 4996529 (1991-02-01), Connell
patent: 5001726 (1991-03-01), Kawai et al.
patent: 5017805 (1991-05-01), Kase
patent: 5061900 (1991-10-01), Vinn et al.
patent: 5920273 (1999-07-01), Hirano
patent: 5990814 (1999-11-01), Croman et al.
patent: 6507241 (2003-01-01), Ritter
patent: 6794920 (2004-09-01), Aliahmad et al.
patent: 6822501 (2004-11-01), Kinugasa
patent: 6847320 (2005-01-01), Taft et al.
patent: 6900750 (2005-05-01), Nairn
patent: 6982664 (2006-01-01), Nairn
patent: 2003/0117205 (2003-06-01), Cahalane et al.
patent: 2003/0132867 (2003-07-01), Ostrom et al.
patent: 2003/0154045 (2003-08-01), Sung et al.
patent: 2005/0219090 (2005-10-01), Jonsson et al.
Richard Fung, “Improving Accuracy of Analog-to-Digital Converters,” Nov. 14, 2002, [retrieved on Oct. 10, 2007]; Retrieved from the Internet <URL:http://www.eecg.utoronto.ca/˜kphang/papers/2002/rfung—AccuracyXofXADCs.pdf>.
Wong, et al., “Offset Compensation in Comparators With Minimum Input-Referred Supply Noise”, IEEE Journal of Solid-State Circuits, vol. 39, No. 5, May 2004 [online], [retrieved on Oct. 10, 2007]; Retrieved from the Internet <URL: http://www.ee.ucla.edu/˜ckygroup/papers/wong—issc—may04.pdf>.
McAndrews Isabelle R.
MoSys, Inc.
Williams Howard
LandOfFree
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