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本文在文章[5]的基础上进一步论证了一种新PAL解码器(PAL_(MS))的原理,并介绍了对其进行的实验室研究工作。理论和实验研究表明,PAL_(MS)解码器具有下述优点:(1)为生产用于该解码器的超声玻璃延迟线,无需精磨工序。(2)梳状滤波器电路的制作和调整较为容易。(3)双矩阵电路具有完善的分离两个色差信号的性能,有利于克服大面积行蠕动现象和改善显示图象的质量。
Based on the article [5], this paper further demonstrates the principle of a new PAL decoder (PAL_ (MS)) and introduces its laboratory research work. Theoretical and experimental studies have shown that the PAL MS decoder has the following advantages: (1) No need for a refining step to produce an ultrasonic glass delay line for use in the decoder. (2) comb filter circuit production and adjustment easier. (3) The dual matrix circuit has perfect performance of separating two color difference signals, which is good for overcoming the peristaltic phenomenon of large area lines and improving the quality of the displayed image.