JPS61151481U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is a block diagram showing the convergence circuit, Figure 2 is a schematic diagram showing correction point positions inside and outside the screen, Figure 3 is a dot pattern diagram showing correction points within the screen, and Figure 4 is a diagram showing correction points within the screen. 5 is a block diagram showing a conventional crosshatch pattern generation circuit, FIG. 6 is a block diagram of a pattern generation section according to the present invention, and FIGS. 7 to 10 explain convergence correction. It is a crosshatch pattern diagram for. 6...screen, 7,10...correction point, 9...crosshatch pattern, 60...pattern generation section.

Claims (1)

[Scope of utility model registration request] When performing convergence correction by correcting convergence deviations at multiple correction points set horizontally and vertically inside and outside the screen of a television receiver, a pattern is projected on the screen to clearly indicate the position of the correction points. A convergence correction pattern generation circuit, characterized in that the convergence correction pattern generation circuit generates at least two or more crosshatch patterns interposed vertically and horizontally between the correction points in both the horizontal and vertical directions.