US 6,552,755 B1 · Method for measuring convergence by using a mixed color pattern

Abstract

A method for measuring a convergence of color CRT uses a combination pattern among Red(R), Green(G) and Blue(B) colors on a white pattern when measuring convergence by using a color camera so that convergence is measured with a high degree of precision. The method sequentially generates two test patterns after mixing two colors chosen from among red(R), green(G), and blue(B) colors, e.g., mixtures of red(R)/blue(B) and green(G)/blue(B). Images are independently obtained of the two test patterns formed on the color CRT screen, and a signal conversion is performed based on each independently obtained pattern image to produce image information. The image information is stored and a convergence of the stored image information for each test pattern is calculated.

Claims5

Dependent claims

A method for measuring color signal convergence of color signals of a color CRT, said method comprising the steps of:

a) mixing two color signals selected from among red(R), green(G), and blue(B) signals;
b) sequentially generating two test patterns based on said two color signals on a color CRT screen;
c) independently obtaining images of said two test patterns formed on said screen;
d) converting a signal from each independently obtaining pattern image into image information, and storing said image information;
and
e) calculating a convergence of the image information for each stored test pattern.

3 more elements

Dependencies are inferred from the claim text.

Method for measuring convergence by using a mixed color pattern

Life of this patent

Method for measuring convergence by using a mixed color pattern

Life of this patent

Abstract

Claims5