Abstract: Information including pictures, sounds, and characters is inputted. A form of the inputted information is converted into a prescribed format in accordance with properties of the information, and thus converted information is derived. A first storage means holds the inputted information and/or the converted information. The information held in the first storage means is edited, and thus edited information is derived. A reproduction sequence is generated. A second storage means holds the edited information. The information held in the first storage means and/or the second storage means is reproduced in the reproduction sequence to allow a check on the information and the reproduction sequence. The information held in the first storage means or the second storage means is outputted for manufacturing a recording medium.

Abstract: A DPCM coding apparatus adapted for directly coding a composite color television signal is disclosed which carries out a so-called two-dimensional prediction using horizontal and vertical signals from a predetermined earlier period as predict value for DPCM while taking the color sub-carrier wave into consideration. The two-dimensional prediction allows immediate restoration after dropout of the coded signal should this occur.