Using the simulation program for digital recording system which calculate eye diagram and error rate, I optimized the parameters of the equalizer, and found that nonlinear distortion is rather severe than we expected. I propose a detection method to compensate the nonlinear distortion.
This paper is to describe one of the playback video signal processing methods for composite digital VTR. In paticular, the emphasis is placed on the YC seperation methods, the edge comb filter and the newly developed interporation which all works to maintain broadcast picture quality in slow motion as well as in normal playback. In addition, described herewith is the amplifier processing that varies output video levels.