Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1975-09-09
1978-05-23
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
250272, 358903, H04N 718
Patent
active
040914160
ABSTRACT:
An apparatus for producing displays in the form of areas of well-defined illumination levels, in order to display a body subjected to penetrating radiation, and in particular X rays or gamma rays is provided. In this apparatus, the image is divided into two regions, the first corresponding to a narrow range of levels and the second, to a much larger range of levels. Means are provided in order to clearly differentiate the respective appearances of these two regions.
REFERENCES:
patent: 3778614 (1973-12-01), Hounsfield
patent: 3794762 (1974-02-01), Zukerman
Riethmuller Jacques
Vasseur Jean Pierre
"Thomson-CSF"
Britton Howard W.
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