通常来说，在这种活动上，只有一个编辑过的输出信号可以传播到便携式电视或大屏幕显示器上。
Normally at such events there is only a single feed of edited output relayed to portable TVs or large-screen displays.
相对于LED大屏幕显示器视频控制卡，脱机控制卡在软件实现上需要做较多复杂的工作。
Software realization of LED Large Screen Display Offline Control card needs much complex work compared with that of video card.
根据LED大屏幕显示器的检测标准讨论LED显示屏的一致性，一致性涉及的因素，并提出一致性设定统一评价标准的想法。
On the basis of the LED display screen measure standard, we discuss the coherence of LED display screen, the factors involved, and puts forwards the opinion of coherence standardization.
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