Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1987-05-11
1988-10-18
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
35821326, H04N 314
Patent
active
047790059
ABSTRACT:
A focal plane electronic system is disclosed, in which a two-dimensional array of photo-detectors receives pixel information from a scanned scene. Each pixel is observed by a plurality of detectors, and their signals are summed by time delay and integration (TDI) circuitry. The TDI circuitry comprises parallel capacitors which are charged and discharged under the control MOSFET switches. The discharge timing is such that all the detector signals representing a given pixel arrive simultaneously at a summing node. Means are included for automatically reducing the effect of anomalous detector signals on the summed output. The entire TDI system is included in a Z-type three-dimensional focal plane module.
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Allen Stephone B.
Irvine Sensors Corporation
Nelms David C.
Plante Thomas J.
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