| 摘要 |
PURPOSE:To obtain a high-fidelity color in a simple way when the three primary colors are mixed in an optional rate for display on the color Braun tube, by applying the color distribution control method in which the quantity of the three primary colors is taken out at the optionally designated two sections and then mixed up in the desired ratio. CONSTITUTION:Original picture 1 is photographed through TV camera 2 to obtain the video signal. The video signal is then colored via color encoder 4 and displayed on color display 5 after conversion through A/D converter 3 and the equi-density division every voltage level and with the designated color number. The quantity ratios of the three primary colors (R, G and B) are mixed up in the following method: first both the mixing two sections and the mixing rate are designated via conditional input device 8; the value calculated by arithmetic control mechanism 7 is delivered to D/A converter 9; and thus color encoder 4 is controlled to change the colors. Both the mixing sections and ratio can be selected optionally, thus obtaining the desired color in a simple way. |
