Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1985-09-16
1987-12-01
Shepperd, John W.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 27, 358 28, H04N 974, H04N 968
Patent
active
047108002
ABSTRACT:
A video parameter control system operative for correcting hue, saturation and luminance of a color video signal. Circuitry for generating and positioning a cursor on a video monitor displaying an uncorrected input video signal allows selection of a colored region on the monitor. Circuitry responsive to the cursor location selects one of a plurality of color correction circuits to become operative for directing video parameter correction such as hue, saturation and luminance only to regions in the video image corresponding to the hue selected by the cursor. In one embodiment, prestored digital correction values are retrieved from memory and converted into analog correction signals which modify the phase, amplitude and DC level of the composite video signal. In another embodiment, independent color derivative signals are employed in conjunction with the location of the cursor to route signals from operator controls to a channel carrying video signals of the selected hue.
REFERENCES:
patent: 3649748 (1972-03-01), Knauer
patent: 4307962 (1981-12-01), Jung
patent: 4413273 (1983-11-01), Wischermann
patent: 4525736 (1985-06-01), Korman
patent: 4533938 (1985-08-01), Hurst
Fearing Craig
Orsburn Michael L.
Shepperd John W.
Utah Scientific Advanced Development Center, Inc.
LandOfFree
Apparatus for allowing operator selection of a color region of a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for allowing operator selection of a color region of a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for allowing operator selection of a color region of a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1934394