【摘 要】
：
本文指出行频对电视频谱特性起重要作用,对图象清晰度有一定的影响。因此,两个象素宽度相同,行频不同的电视系统接收经传输后的信号,低行频系统的图象清晰度明显比高行频的系
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本文指出行频对电视频谱特性起重要作用,对图象清晰度有一定的影响。因此,两个象素宽度相同,行频不同的电视系统接收经传输后的信号,低行频系统的图象清晰度明显比高行频的系统好。本文从分析两种慢扫描电视系统的实例出发,给出了实测频谱与照片。
This article points out that the line frequency plays an important role in the television spectrum characteristics and has certain influence on the image definition. Therefore, a television system with the same two pixel widths and different line frequencies receives the transmitted signal, and the image definition of the low-line-rate system is obviously better than that of the system with the high line-rate. Starting from the analysis of two kinds of slow-scan television systems, this paper gives the measured spectrum and photos.
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