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LED display brightness and resolution

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Unlike high brightness outdoor display requirements, the indoor LED display brightness needs to be down. Best small pitch LED display brightness into the room at about 200cd / m. But after reducing the brightness brings a loss of grayscale, then we need to add technology to complete.

Compared with the signal outdoor LED display, it features indoor display is a multi-access signal access and complex signals. R & D is found by simply dividing want to achieve multi-screen program signal access will reduce the input signal standards.

Due to the large screen pixel is always less than the video sources when playing inevitable problems encountered in scaling, sampling and reproducing the losses and defects caused by aliasing and may cause degradation of image quality. How to reduce and reduce losses, the need of digital signal processing technology. Digital image processing technology has made great progress, there are many achievements, such as large-size TV or projector technical achievements, it can be applied directly to large-screen display in the past. A processing capacity digital processing system embodied in the process median and processing speed, the use of high-end DSP or FPGA is inevitable.

For the LED screen, the patchwork uniform is no problem, is not obvious seams. However, the small pitch LED display can not be so, if packed tight between the module will appear bright line installation, the module will be a large gap dark lines.

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