Digital system for raster scan display of video and alpha-numeri

Details Digital system for raster scan display of video and alpha-numeri Digital system for raster scan display of video and alpha-numeri

1981-11-24

1984-12-04

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340703, 340727, 340721, G09G 100

Patent

active

044867468

ABSTRACT:
This invention provides a simple system for simultaneous raster scan display of video and alpha-numeric data on a single screen with provision for periodic image refreshment. It includes means for encoding the electrical signals representing the spatial intensity distribution of the video signal and the alpha-numeric signal. The coded signals are stored in a single bit map memory at the desired addresses. For display, the information is simply read from the memory through a single digital-to-analog convertor.

REFERENCES:
patent: 4317114 (1982-02-01), Walker
patent: 4352105 (1982-09-01), Harney
patent: 4445115 (1984-04-01), Rudgard

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