Why does the led display need to display the correction technology? Generally speaking, when the led display is running for a period of time, all the LED display tubes will have brightness decay, which is unavoidable. When compared with the factory, the whole The screen displayed on the screen will be grainy, resulting in an unclear picture.
However, if the installed Led display is returned to the factory for correction, the amount of work is too large to be performed, and it is necessary to perform proofreading according to the scene to ensure that the display of the led display is stable. Led display uniformity correction: factory calibration, repair calibration, service area correction and on-site calibration, etc. Below we look at the two methods of field correction of led display:
1, now commonly used according to the field common correction method:
The pixel collection point of each led display screen is accurately collected by using a special collection device, and the attenuated LED illumination tube is compensated by an algorithm to complete the common correction, thereby realizing the uniform display effect when the display screen returns to the factory.
2, the early calibration method _ according to the LED operation to correct
According to the stalk record, the operation of each Led module is roughly calculated, and the working moment of the LED is roughly calculated, and the approximate brightness attenuation is determined, and then adjusted. This method neglects that the brightness attenuation calculated when the LED is running is not suitable for each LED display. When the recorded working time is increased, the data error rate increases, and in the later adjustment, the mosaic phenomenon occurs, so this method cannot A good improvement in the Led display shows a uniform problem.