| 摘要 |
<p>PURPOSE:To improve the resolution by thinning every other frame of 525 signals of 60 fields/60 frames/sec to convert them to 525 successive scan signals of 30 frames/30 fields/sec and subjecting them to signal processing. CONSTITUTION:In the image pickup transmission side, 525 successive scan signals of 30 fields/30 frames/sec have a high band component YH of a luminance signal Y subjected to two-dimensional amplitude modulation and have the frequency shifted into 4.2MHz transmission band and are multiplexed and are converted to 525 interlace NTSC-TV signals of 60 fields/30 frames/sec and are transmitted. In the reception side, they are converted to 525 successive scan video signals of 30 fields/30 frames/sec, and signals YL, C', and YH' are separated in a three-dimensional frequency area in case of a still picture and are separated in a two-dimensional frequency area in case of animation to demodulate them to signals Y, I, and Q, and they are converted to RBG signal and are converted to 525 successive scan video signals of 60 fields/60 frames/ sec and are projected. Thus, vertical and horizontal resolutions are considerably improved.</p> |
