Device for the elimination of the effect of background radiation

Details Device for the elimination of the effect of background radiation Device for the elimination of the effect of background radiation

1974-03-05

1976-03-16

Britton, Howard W.

Telegraphy

Systems

Simplex-reversing periodic

178DIG8, 250334, H01L 3118, H04N 718

Patent

active

039447308

ABSTRACT:
A device for the elimination of the effect of background radiation on the image representation in an IR-camera comprises scanning elements and a detector for the conversion of IR-radiation to a video signal and this video signal is supplied to an image representation unit via an a.c. voltage-coupled circuit, an image signal and a background signal appearing periodically and separate from each other in the camera.

REFERENCES:
patent: 3751586 (1973-08-01), Johansson
patent: 3798366 (1974-03-01), Hunt

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