Patent ID: 6078720
Filing Date: 2000-06-20
Classification: H04N

Abstract:
A copying apparatus for picking up a modulated video signal recorded on a recording medium and directly copying the modulated video signal onto another medium, comprising:a high-pass filter for separating a high-frequency modulated luminance signal from the modulated video signal by setting a cutoff frequency higher than a frequency band of a low frequency converted color signal;a limiter for receiving an output signal of said high-pass filter and limiting variation of the amplitude of the output signal of said high-pass filter to a predetermined level;a first feature compensator for receiving the output signal of said limiter and correcting high frequency characteristics of the output signal of said limiter;a first low-pass filter for separating a low frequency converted color signal and a low-frequency modulated luminance signal, each having a frequency that is lower than the cutoff frequency, from said modulated video signal;a gain controller for receiving an output signal of said first low-pass filter and maintaining the output signal of said first low-pass filter at a constant level;a second feature compensator for receiving an output signal of said gain controller and correcting low frequency characteristics of the output signal of said gain controller; anda mixer for mixing an output signal of said first feature compensator with an output signal of said second feature compensator;wherein the mixed signal is output and recorded on a recording medium by a video head.