Apparatus for selectively altering image data for CRT display in

Details Apparatus for selectively altering image data for CRT display in Apparatus for selectively altering image data for CRT display in

1975-07-30

1977-02-08

Martin, John C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

178DIG34, 358 22, 358 37, H04N 522, H04N 9535

Patent

active

040073270

ABSTRACT:
Apparatus for treatment of luminance and/or color data included in information representative of an image to be displayed in a visual display system, comprising a comparator for comparing the data with at least one reference datum defined upon a scale of level possible variations and a device for switching the levels of the data according to the positioning in relation to each reference datum to lead to a precise analysis of the displayed image.

REFERENCES:
patent: 3277318 (1966-10-01), Bedford
patent: 3341654 (1967-09-01), Pay et al.
patent: 3812289 (1974-05-01), Avins
patent: 3878325 (1975-04-01), Cecchin et al.

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