Programmable video test pattern generator for display systems

Details Programmable video test pattern generator for display systems Programmable video test pattern generator for display systems

1982-09-30

1985-04-23

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 10, 328188, H04N 702, H04N 962

Patent

active

045133182

ABSTRACT:
A front for test patterns is made programmable by programming individual "characters" to be displayed on a video display. The individual characters are assigned memory locations and can be adjusted in height and width, as well as in color and intensity. Complex characters are formed by programming additional features onto a character memory space assigned to each character. The system provides a greater ratio of pattern generating capability-to-required hardware, while providing most features of a fixed character generator. The system's programmability is particularly adapted to use with a test system which has capabilities of incrementally varying scan rate and raster patterns, as well as a capability of random stroke and fixed mode stimuli generation.

REFERENCES:
patent: 4093960 (1978-06-01), Estes
patent: 4137548 (1979-01-01), Kelly et al.
patent: 4364080 (1982-12-01), Vidouic

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