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一、引言致力于提高现有电视制式的指标方面的研究和开发一直在进行着。采用帧存储器的场间信号处理能较好地适应电视信号的自然特性,并能在不久的将来得到普及。然而,还存在有下面几个实际问题:电路庞大;高得使人无法购买的价格;没有用动态自适应算法等。经过我们的努力,克服了上述问题,采用场内信号处理制成了自适应Y/C分离用数字滤波器和自适应轮廓补偿数字滤波器,这两个滤波器能根据图象内容选择滤波器的特性并且能共享一个普通的二行存储器,其硬件成本很便宜。
I. INTRODUCTION Research and development devoted to improving the indicators of the existing television system are ongoing. Field signal processing using frame memory can better adapt to the natural characteristics of television signals and is gaining popularity in the near future. However, there are still some practical problems as follows: huge circuits, high prices that people can not buy, no dynamic adaptive algorithms and so on. After our efforts, to overcome the above problems, the use of field signal processing made of adaptive digital filter Y / C separation and adaptive contour compensation digital filter, the two filters can choose according to the image content filter The characteristics and can share a common two-line memory, the hardware cost is very cheap.