Method and apparatus for photographing video images of either po

Details Method and apparatus for photographing video images of either po Method and apparatus for photographing video images of either po

1984-03-12

1987-07-07

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358169, 358244, 358345, 358172, H04N 514, H04N 518, H04N 584

Patent

active

046790870

ABSTRACT:
Apparatus and method for controlling a video signal amplitude excursion to provide a display image within a photographic acceptance range of a film. A clamping level is established for said video signal which maintains the brightness of the display monitor fixed. A gain controlled amplifier is serially connected to receive said video signal. The gain of the amplifier is set to control the contrast level for the monitor. Calibration means are provided to establish a light output from the display monitor within the optimum photographic acceptance range.

REFERENCES:
patent: 3207998 (1965-09-01), Corney et al.
patent: 4065790 (1977-12-01), Siegel
patent: 4197557 (1980-04-01), Tuma et al.
patent: 4403254 (1983-09-01), Okada et al.
patent: 4415921 (1983-11-01), Mulvanny et al.
patent: 4433345 (1984-02-01), Haddick et al.
patent: 4530011 (1985-07-01), Haddick
patent: 4564863 (1986-01-01), Chameroy et al.

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