论文部分内容阅读
提高电视机的图象质量,始终是一个需探讨的问题.随着彩色电视技术的发展,人们在欣赏之余,必然要对图象质量提出更高的要求.彩色电视机的图象质量,从高频调谐器开始到整个偏转系统,乃至显象管为止,可以说所有部分对其均有影响.故要提高图象质量,需从各个环节去保证.本文仅从亮度通道的角度出发,提出改善图象质量的一种办法.通常,要获得一幅满意的彩色图象,至少必须具备三个条件:(1)背景噪声小;(2)图象轮廓清晰;(3)色彩鲜艳.上述三个条件中除色彩鲜艳主要取决解码部分外,其余均与亮度通道有密切的关系.故从全局来看,也有必要对该电路作较详细的研究.
Improve the image quality of the television, it is always an issue to be explored.With the development of color television technology, people appreciate, it is bound to put forward higher requirements for image quality.Color TV image quality, From the beginning of the high-frequency tuner to the entire deflection system, and even the kinescope so far, it can be said that all the parts have an impact on them.Therefore, to improve the image quality, it is necessary to ensure from all aspects.This article only from the perspective of the brightness channel, In order to obtain a satisfactory color image, at least three conditions must be met: (1) the background noise is small; (2) the image outline is clear; and (3) the color is bright. The above three conditions in addition to colorful mainly depends on the decoding part, the rest are with the brightness channel is closely related, so from the overall point of view, it is also necessary to study the circuit in more detail.