Method and apparatus for automatically setting parameters in the

Details Method and apparatus for automatically setting parameters in the Method and apparatus for automatically setting parameters in the

1990-09-12

1992-09-08

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358183, H04N 5262

Patent

active

051463156

ABSTRACT:
In a system in which a color-controlled signal is put through a limiter to produce a video mixer signal, variable settings are provided for for color hue, color selectivity, clip level and control signal amplification. The setting magnitudes are preliminarily varied while peak values of a color-controlled video mixer signal are measured, with the settings corresponding to peak values being stored for subsequent use. The apparatus can also be used to generate a video mixer signal controlled by luminance range selection, or controlled by a combination of color hue and luminance range selection. The preliminary determination of settings can be limited to an area defined by a movable window of adjustable size.

REFERENCES:
patent: 4319266 (1982-03-01), Bannister
patent: 4394680 (1983-07-01), Watanabe
patent: 4396939 (1983-08-01), Kitahama
patent: 4630101 (1986-12-01), Inaba et al.
patent: 4695886 (1987-09-01), Schofield
patent: 4774507 (1988-09-01), Kashigi et al.

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