JPS5999582U - blanking circuit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing a conventional blanking circuit, Fig. 2 is an operating waveform diagram explaining the operation of the horizontal deflection circuit, Fig. 3 is an operating waveform diagram showing the blanking pulse generation process in Fig. FIG. 4 is a block diagram showing a blanking circuit according to an embodiment of the invention, and FIG. 5 is an operation waveform diagram showing the process of generating the blanking pulse in FIG. 4. In the figure, 10 is a figure-8 correction capacitor, 11 is a flyback transformer, 18 is a blanking width control circuit, and 19 is a blanking pulse generation circuit. Note that the same reference numerals in - indicate the same or equivalent parts. Figure 2

Claims (1)

[Scope of utility model registration request] In a blanking circuit that performs blanking using the flyback pulse of the horizontal deflection circuit, the flyback pulse is combined with the voltage across the figure-8 correction capacitor provided in the horizontal deflection circuit, and this A blanking circuit comprising: a blanking width control circuit that slices and outputs a composite voltage at a predetermined level; and a blanking pulse generation circuit that generates a blanking pulse according to the sliced pulse width.