ENERGY SCATTERING SIGNAL ELIMINATING CIRCUIT

摘要

PURPOSE:To reproduce an output waveform with fidelity and to sufficiently eliminate an energy scattering signal, by branching an output of a video signal into two and making the capacitance value of capacitors used for a clamp circuit connected to each output terminal different. CONSTITUTION:A video signal applied to an input terminal 7 is branched into two at a distribution circuit 8 and they are respectively applied to a peak clamp circuit 9 and a pulse clamp circuit 11. The peak clamp circuit 9 consists of a diode and a capacitor of a comparatively large capacitance value and eliminates most of the energy scattering signals superimposed on the video signal and reduces the level fluctuation of the peak value of a synchronizing signal. The pulse clamp circuit 11 consists of a capacitor with comparatively less capacitance value, and the residual of the energy scattering signal and sag produced by the capacitor with small capacitance can be eliminated by applying a synchronizing signal obtined from a synchronizing separation signal circuit 10 as a gate pulse.