Graphics display systems

Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...

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340721, 340747, 324 88, 358 10, 358139, G09G 100

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active

045860360

ABSTRACT:
Graphics display systems ideally suited for the display of certain types of graphics information are disclosed. The display systems utilize a black and white or color raster scan display having a vertical rather than a conventional horizontal raster scan. Data stored in the refresh memory of the display system is run length encoded so that a display pixel may be defined at any position along each vertical sweep of the raster scan or trace. Multiple channels allow the definition of multiple pixels on each scan, which allows the display of graph type data in a manner simulating the output of a multiple channel strip chart recorder. The system includes alphanumeric character generation and graphics character capabilities which allow the definition of grid lines and the labeling of information displayed. Methods and apparatus for providing windowing, panning, scrolling, horizontal compression, curve overlaying, panning of one curve with respect to other parts of the same curve or another curve, bar chart generation and other features and capabilities of the system are disclosed.

REFERENCES:
patent: 3872461 (1975-03-01), Jarosik et al.
patent: 4058826 (1977-11-01), Schneider
patent: 4204206 (1980-05-01), Bakula et al.
patent: 4307393 (1981-12-01), Hamada et al.
patent: 4470042 (1984-09-01), Barnich et al.
patent: 4484187 (1984-11-01), Brown et al.
patent: 4484302 (1984-11-01), Cason et al.
"High Speed Raster Technique Provides Flexible Display", Hewlett Packard Journal, Nov. 1980, Stettiner et al, pp. 11-14.

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