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

G - Physics

01

R

375/4, 324/59

G01R 31/24 (2006.01) G01R 31/28 (2006.01) H04N 17/04 (2006.01)

Patent

CA 1208382

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 capa- bility-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 increment- ally varying scan rate and raster patterns, as well as a capability of random stroke and fixed mode stimuli generation.

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