Appeal No. 2006-1049
Application No. 09/667,826
51. (Not on Appeal)
52. An infrared imaging system, comprising:
an infrared focal plane array comprising:
a plurality of infrared detector elements arranged in an array;
a readout circuit electrically coupled to the plurality of detector
elements and comprising a plurality of readout cells equal in number
to the plurality of detector elements, means for biasing the plurality of
detector elements so as to provide separate detection signals
corresponding to each detector element in the array, in response to
incident infrared radiation and means for separately correcting offsets
in the detection signals provided from the plurality of elements in the
detector array to compensate for nonuniformities in the detector
elements, wherein said means for correcting comprises an offset
correction circuit in each readout cell of the readout circuit and
wherein each offset correction circuit comprises a plurality of circuit
elements and means for selectively electrically connecting said circuit
elements into the readout cell in response to a stored offset correction
value corresponding to said readout cell; and
output means for providing the corrected detection signals as an output of
the focal plane array;
means for storing a plurality of offset correction values corresponding to the
plurality of detector elements; and
means for providing the offset correction values to said means for
correcting.
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