16:9宽屏彩电中的图像压缩技术

Image compression techniques in 16:9 wide screen color TV receivers

对于现有16：9宽屏幕彩电在接收4:3幅型比图像时出现的水平失真现象，提出了一种有效的数字压缩技术，将亮度信号（Y）、两个色差信号（R-Y，B-Y）进行数字化处理，按一定规则在存储器中进行信号的存取，实现图像在时间轴上的压缩，解决了图像的水平失真问题。

In order to mitigate the effect of horizontal distortion when using 16:9 wide screen color TV to receive signals with width-to-height of 4:3, a new data compression technique is proposed. The illuminance signal (Y) and two color difference signals (R-Y,B-Y) are digitized before they are stored in and retrieved from the memory according to some pre-specified rules. Temporal image compression is complemenbed. Horizontal distortion is solved.