Appeal No. 2006-1049
Application No. 09/667,826
of detector elements comprise microbolometer detector elements.
14. An infrared imaging system as set out in claim 13, wherein said means
for biasing comprises a constant current source coupled to said microbolometer
detector elements.
15. An infrared imaging system as set out in claim 13, wherein said means
for biasing comprises a fixed voltage source coupled to said microbolometer
detector elements.
16. An infrared imaging system as set out in claim 15, wherein said means
for correcting comprises a plurality of substantially constant current sources
selectively coupled to said voltage source and in parallel with said microbolometer
detector elements.
17. An infrared imaging system as set out in claim 16, wherein said means
for correcting further comprises a plurality of switches coupled in series with
respective constant current sources.
18. An infrared imaging system as set out in claim 17, wherein said offset
correction values comprise an on or off signal supplied to each of said switches.
19. An infrared imaging system as set out in claim 1, wherein said output
means comprises one or more output buffers.
20. An infrared imaging system as set out in claim 1, wherein said focal
plane array further comprises a differential amplifier with first and second inputs
wherein the first input is electrically connected to the readout circuit so as to
receive the detection signals and wherein the second input is connected to an
adjustable reference voltage.
21. An infrared imaging system as set out in claim 1, further comprising
timing means for providing focal plane timing signals to said readout circuit.
22. An infrared imaging system as set out in claim 21, wherein said readout
circuit further comprises offset correction logic means for controlling the means
for correcting in response to said timing signals provided from the timing means.
23. An infrared imaging system as set out in claim 22, wherein said offset
correction logic means receives said offset correction values from said means for
storing and provide them to said means for correcting in response to said timing
signals.
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Last modified: November 3, 2007