Method and apparatus for offset and gain compensation for...

Details Method and apparatus for offset and gain compensation for... Method and apparatus for offset and gain compensation for...

2007-10-10

2009-06-02

Jeanglaude, Jean B (Department: 2819)

Coded data generation or conversion

Converter compensation

C341S117000, C341S119000, C341S120000, C341S155000

Reexamination Certificate

active

07541952

ABSTRACT:
A method for determining a gain compensation value for multiple ADCs sums an absolute value of a number of ADC output samples from each of the ADCs that may be collected while the ADCs are in normal operation. In one embodiment, the ratio of the sums of the absolute values of ADC output samples may reflect the difference in gains between the ADCs, and may be used to determine the ADC gain compensation value. A method for determining an offset compensation value between for multiple ADCs averages of a number of ADC output samples from each ADC collected while the ADCs are in normal operation. In one embodiment, a difference between the ADC sample averages may reflect the difference in magnitudes of the ADC offsets for each ADC, and may be used to determine the ADC offset compensation value.

REFERENCES:
patent: 6509852 (2003-01-01), Todsen et al.
patent: 6928092 (2005-08-01), Broutin et al.
patent: 7068987 (2006-06-01), Baldwin et al.
patent: 7233631 (2007-06-01), Van Bezooijen et al.
patent: 2002/0075892 (2002-06-01), Bezooijen et al.
patent: 2004/0032854 (2004-02-01), Huang et al.
patent: 2005/0157819 (2005-07-01), Wang et al.
patent: 2006/0050800 (2006-03-01), Aytur et al.

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