A color switch for television receivers in pal system color. (Machine-translation by Google Translate, not legally binding)

摘要

A color switch for PAL system color television receivers using a PAL multivibrator switch that alternates between two positions and which, in the absence of the color signal, remains in one and always the same position, the voltage of which output is taken through a cr circuit and appearing the voltage behind the filter circuit that serves for the color commutation, characterized in that only one of the two inputs of the multivibrator (eg E1) is applied to the line pulses or a voltage derived from these pulses, while that the sum of the line pulses, or a voltage derived from them, and a sinusoidal voltage of one half of the line frequency, derived in a known manner, are applied to the other input (eg to E2) of the PAL or code identification pulses respectively and because the amplitude of each of these two pulses is less than the amplitude required for the excitation of the multivibrator flipping process and because during the vertical deflection sweep, and during the transmission of the color image, the amplitude of the sum voltage is greater than the amplitude of the aforementioned excitation. (Machine-translation by Google Translate, not legally binding)