Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1982-01-04
1983-09-13
Britton, Howard
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
378 99, H04N 718
Patent
active
044045913
ABSTRACT:
In radiography apparatus a moving slit collimator is disposed between an X-ray source and a patient undergoing examination. Radiation is detected with an X-ray image intensifier and television pickup chain. The field of view of the television pickup is limited to that area of the output screen of the X-ray image intensifier which corresponds to the image produced by direct radiation which passes through the moving slit. The view of the television pickup may be limited by a second slit, disposed between the X-ray image intensifier and television pickup which moves in synchronism with the first slit. Alternately, the view of a television pickup may be limited by synchronizing scan signals for the pickup of the with the motion of the slit collimator.
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Britton Howard
Haken Jack E.
North American Philips Corporation
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