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IRFPA ROIC WITH DUAL TDM RESET INTEGRATORS AND SUB-FRAME AVERAGING FUNCTIONS PER UNIT CELL
IRFPA ROIC WITH DUAL TDM RESET INTEGRATORS AND SUB-FRAME AVERAGING FUNCTIONS PER UNIT CELL
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机译：IRFPA ROIC，具有双TDM复位积分器和每个单元单元的子帧平均功能
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摘要
A unit cell (10) of a readout integrated circuit is constructed and operated so as to temporally align an image obtained in a first spectral band with a an image obtained in a second spectral band. A method operates, during a frame period, to sub-frame average a first signal detected in the first spectral band by a multi- spectral detector (12), to sub-frame average a first signal detected in the second spectral band by the multi-spectral detector, and to sub-frame average a second signal detected in the first spectral band by the multi-spectral detector. The method then reads out the sub-frame averaged signals for each spectral band. The sub-frame averaged may be read out simultaneously from the unit cell. When sub-frame averaging the first and second signals in the first spectral band the method performs a plurality of consecutive sub-integrations and stores the result of each sub-integration on a first sub-frame averaging capacitance, and when sub-frame averaging the first signal of the second spectral band the method performs a single integration of the second signal, and stores the result of the integration on a second sub-frame averaging capacitance. The first spectral band may Correspond to long wavelength infrared radiation (L WIR), and the second spectral band may correspond to medium wavelength infrared radiation (MWIR).
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