Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1982-06-25
1984-11-20
Brigance, Gerald L.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340721, 340723, 340724, 340725, 340747, 340750, G09G 102, G09G 128
Patent
active
044841876
ABSTRACT:
Apparatus and method are disclosed for selecting colors for presentation in a display device such as a CRT. The apparatus includes a pair of video memories that store picture element (pixel) data for presentation at the same location of the display device. A color map, or video look-up table, stores digitally encoded colors that are provided at its output in response to a digital input address. The digital input address is partioned into several portions. Pixel data from the first video memory supplies one portion of the digital input address while pixel data from the second video memory supplies another. Neither video memory has priority in selecting the color presented on the video display although the color map is programmable to give effective priority to either one.
The digital address is further partioned into a third portion to thereby define the color map as a plurality of segments. A data processor selects which segment of the color map is to be addressed by the video memories thereby changing priority and/or color palettes without alteration of the pixel data or the need to reprogram a segment of the color map.
REFERENCES:
patent: 4121283 (1978-10-01), Walker
patent: 4180805 (1979-12-01), Burson
patent: 4225861 (1980-09-01), Langdon, Jr. et al.
patent: 4232311 (1980-11-01), Agneta
patent: 4262302 (1981-04-01), Sexton
patent: 4317114 (1982-02-01), Walker
patent: 4324401 (1982-04-01), Stubben et al.
patent: 4364037 (1982-12-01), Walker
patent: 4439760 (1984-03-01), Fleming
Siggraph '79, "Introduction to Raster Graphics", James Foley, 1979.
Brown James W.
Stoddard William S.
AT&T Bell Laboratories
Brigance Gerald L.
Morra M. A.
LandOfFree
Video overlay system having interactive color addressing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Video overlay system having interactive color addressing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video overlay system having interactive color addressing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2191739