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Talking about the application method of QR code in LED display field
With the gradual informatization and technology of today's society, it has become the mainstream of the information society by sweeping the QR code and logging in. The QR code has been widely used in various industries, and of course the LED display industry is not. exception. So what is the application of the QR code in the LED display? What is the specific situation of the application of QR code in LED display?
In general, in order to get high LED light brightness, it will choose "high LED light brightness mode", so even if the refresh rate, gray scale performance is worse (indoor LED display: brush rate frequency <500Hz / outdoor LED display: refresh Rate <1000Hz). When the QR code is applied to the “High LED Light Brightness Modeâ€, scanning with a mobile phone may result in an inability to scan correctly.
Traditional switch type - high refresh rate mode
The traditional switch-type driver chip includes JIX5020, MBI5024, etc. The traditional switch-type driver chip is in practice, with the control system, and the high refresh rate mode can be selected. The LED display with 1:16 scanning is taken as an example, and the LED of the traditional switching technology is used. The driving chip broadcasts the two-dimensional code picture, and the current two-dimensional code is mostly designed with the background image, but when the traditional switching type driving chip is used to select the two-dimensional code image played in the high refresh rate mode, the gray scale is insufficient, so Use your phone while scanning.
1. The three positioning patterns and codes in the two-dimensional code are confused with the background color, so that the two-dimensional code cannot be significantly reduced.
2, due to insufficient color scale, the effect of shooting and the background image appear serious color blocks, so the advertising effect is also greatly reduced.
Traditional switch type - high gray scale mode
The traditional switch-type driver chip includes JIX5020, MBI5024, etc. The traditional switch-type driver chip is in practice, with the control system, and the high-gray mode can be selected. The LED display with 1:16 scanning is taken as an example, and the LED of the traditional switching technology is used. Drive the chip to broadcast the QR code picture.
The traditional switch type driver chip is used to select the two-dimensional code played in the high grayscale mode. Since the refresh rate is insufficient, when the mobile phone is used for scanning, the code modules are deformed and cannot be read. The same for advertisers, the advertising effect is quite poor.