Patent ID: 7280165
Filing Date: 2007-10-09
Classification: H04N

Abstract:
1. An apparatus for controlling a convergence of a projection television, comprising: a pattern generator which generates R, G, and B video patterns used for controlling the convergence and then outputs the R, G, and B video patterns to a display; a controller which compares position coordinates and luminance levels of the R, G, and B video patterns with position coordinates and luminance levels of reference R, G, and B video patterns to adjust the luminance levels of the R, G, and B video patterns to the luminance levels of the reference R, G, and B video levels; a digital-to-analog converter which converts the R, G, and B video pattern signals output from the controller into analog R, G, and B video pattern signals; and a switching unit which switches the luminance levels of the R, G, and B video patterns to the luminance levels of the analog R, G, and B video pattern signals.