Dynamic offset correction in detector arrays
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United States of America Patent
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Feb 17, 2004
Grant Date -
Dec 5, 2002
app pub date -
Dec 13, 2001
filing date -
Dec 13, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A signal processing technique applied to the readout of two-dimensional detector arrays provides a dynamic correction mechanism for the varying offsets of the different elements of the array. The outputs of the elements are supplied to an offset correction circuit operative to compensate for the differences in the d.c. or low frequency outputs from a predetermined voltage wherein a fraction of the difference is subtracted at each successive cycle to gradually reduce the difference.
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