H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/37, 350/83
H04N 5/14 (2006.01) H04N 1/407 (2006.01) H04N 5/18 (2006.01) H04N 5/57 (2006.01) H04N 5/84 (2006.01)
Patent
CA 1258523
ABSTRACT OF DISCLOSURE 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 toreceive 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 theoptimum photographic acceptance range.
466793
Haddick David H.
Lyon George E.
Torrano Michael A. Jr.
Dunn Instruments Inc.
Perley-Robertson Hill & Mcdougall Llp
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