电视会议图像出现绿屏的故障处理

Troubleshooting of videoconference "green screen" phenomenon

宁夏电力电视会议系统,对上级与国家电网公司和西北电网公司连接,对下级与公司所属各分会场连接,直接体现了宁夏电力的窗口形象。此系统采用的设备对传输通道要求很高,稍有误码或信号电平不稳就会出现马赛克,或切换会场画面时出现绿屏。原来的处理机制是当出现绿屏时重启8020终端,这样使会议图像和声音全部中断,而当绿屏频繁出现时,需频繁重启8020终端,造成会议频繁中断。为了从根本上解决上述问题,文章分析了绿屏现象的原因,并结合实际提出了相应的处理机制,使得宁夏电力电视会议系统不再受绿屏困扰,能够高质量地召开会议。

The Ningxia electric power videoconference system connects upwards to the State Grid Corporation and Northwest Grid Corporation, downwards to the subordinate companies. This system directly reflects the window image of Ningxia electric power. But this kind of equipment requests very high transmission channel quality, slight impairment can result in the mosaic, or when the conference site pictures are switched the green screen may appear. The original processing mechanism is to reset the 8020 terminals when the green screen appears, but this method will cause interruption of conference picture and sound, if the green screen appears frequently, the conference picture and sound will be interrupted frequently too. In order to solve this problem, the paper analyzes the causation of the green screen taking place, puts forward the method of solving this problem caused by the software of 8020 terminals. Now the high-quality videoconference can be held, Ningxia electric power videoconference system is no longer puzzled by green screen.