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The key to a quality image on a large format video screen is resolution. The LED indoor video display especially needs small pitches to reach a high resolution image. In addition, high speed image refresh is important to video fidelity.........More
It is known that LED degradation with time results in the loss of the LED brightness. To ensure the video quality, maintaining the uniformity of LED therefore becomes especially important for LED display applications. However, it is inevitable that LED degrades with time........More
It has been recognized that LED display used in the freeway should have a feature which the system can report in real time the LED open-circuit or short-circuit errors. During the error detection process, neither the display system would be expected to shut down nor all LEDs be turned on.........More
Environmental conditions are usually key to the visibility of LED Variable Message Signs (VMS). The visibility of the LED VMS cannot be all the time adequate due to the change of the ambient brightness, such as day time and night time...........More
