What preparations are needed before point-by-point calibration of LED roll-up screens?

  I believe we all know that point-by-point correction is a technology used to improve the brightness and color uniformity and color fidelity of LED roller shutter screen, i.e., through the collection of luminance (and chromaticity) data of each pixel (or each base color sub-pixel) area on the LED roller shutter screen, it gives the correction coefficients of each base color sub-pixel or correction coefficients matrix of each pixel, and then feeds back to the control system of the display screen, which applies the correction coefficients to realize the differential drive of each pixel (or each base color sub-pixel) to make the picture of the LED roller shutter screen pure and delicate, and the color is reproduced truly. The correction coefficients are applied to achieve differential driving of each pixel (or each base color sub-pixel), so that the picture of the LED roll-up screen is pure and delicate and the colors are truly restored. In order to ensure the effect of point-by-point correction, we should make relevant preparations. Then you knowLED roll-up screenBefore the point-by-point calibration, need to do what preparatory work? Below VisiTech editorial for your introduction:

  Before the point-by-point calibration of the LED roll-up screen, the following preparations need to be made:

  I. Preparation of the screen

  1. Clean the LED roll-up screen:

  Remove the dust and stains on the light surface and mask of the LED roll-up screen to avoid its influence on the brightness. If you need to replace the mask, please make sure that the mask color is the same as before, otherwise the display will be affected, especially in the daytime, and there is little improvement after correction.

  2. Replace the malfunctioning module:

  Some of the lights do not light, more dead lights, scanning is not normal, the overall lights are too dark (resistance may not be right), wiring or jack problems affect the display, and so on. Ensure that the display, scanning, screen is normal, no too dark, often bright, bright and other phenomena before.

  3. Receiver card upgrade:

  If the receiver card used in the current LED roller shutter screen does not support calibration or does not have enough bandwidth points, it needs to be upgraded. Because of the risk of dead card in the receiver card upgrade, customers need to contact the control system company in advance for upgrade and related processing.

  Reminder: Brightness correction is only to improve the full-screen display uniformity or improve the reality of the problem caused by inconsistent brightness by reducing the brightness of some lamps, but can not improve the brightness of the lamps, can not change the angle of the lamps emitting light, and can not correct the other display problems caused by the hardware functionality problems (power supply, resistors, wiring).

  II. Choosing the right time and environment

  1. The calibration acquisition needs to be carried out in an environment free from wind, rain and fog interference:

  It is necessary for customers to give the calibration schedule of LED roll-up screen according to the local weather environment, or take relevant methods to ensure that the collection equipment tries to collect accurate data in the interference-free environment, so as to achieve good calibration effect.

  2. There are things to do before point-by-point calibration, and you can't save time after point-by-point calibration:

  After the completion of point-by-point calibration, the follow-up maintenance of LED roll-up screen faces new problems, such as replacing the receiver card, updating the data after replacing the module, and adjusting the target brightness and color gamut of the display and so on. These are some of the things we have to do well after point by point calibration.

  In summary, is the LED roll-up screen point by point calibration before, need to do some preparatory work. We only need to do these preparations, in order to better ensure the effect of point by point calibration, therefore, we must pay attention to.