发明名称 |
IRFPA ROIC WITH DUAL TDM RESET INTEGRATORS AND SUB-FRAME AVERAGING FUNCTIONS PER UNIT CELL |
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 (LWIR), and the second spectral band may correspond to medium wavelength infrared radiation (MWIR). |
申请公布号 |
EP1421628(A2) |
申请公布日期 |
2004.05.26 |
申请号 |
EP20020768667 |
申请日期 |
2002.08.23 |
申请人 |
RAYTHEON COMPANY |
发明人 |
FINCH, JAMES, A.;GRAHAM, ROGER, W.;BLACK, STEPHEN, H.;WILSON, JERRY, A.;WYLES, RICHARD, H. |
分类号 |
H01L;H01L25/00;H01L27/146;H01L31/00;H04N5/33;(IPC1-7):H01L31/00 |
主分类号 |
H01L |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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