JPS6450691A - Dubbing adapter - Google Patents

Abstract

PURPOSE:To prevent color slurring due to the repetition of dubbing by separating color video signals into luminance signals and chrominance components, giving prescribed delay to the luminance signals so that a time delay difference with the chrominance components becomes almost zero, and generating color video signals mixed with the chrominance components. CONSTITUTION:The input signals of an input terminal 6 are separated into the luminance signals Y+S and the chrominance components C in a Y/C separation circuit 8 having a dimensional filter, and the luminance signals Y+S are given with prescribed time delay in a variable delay line 10. The variable delay line 10 outputs time delay equivalent to 1H and 2H, and through signals. If the chrominance components C which have been line sequentialized generate the time delay difference equivalent to 2H with respect to the luminance signals T+S by they being made simultaneous and passing through a comb-like filter, for example, the input terminal (c) of a switch 12 is selected and the relative time delay difference between the chrominance components C and the luminance signals Y+S becomes almost zero. The luminance signals Y+S receive high pass compensation in an enhancer 14, are inputted to a mixer 16, and an FM video signal without the relative time delay difference is dubbed between the chrominance components and the luminance components.