System and method for white balance control of LED display screen
A technology of LED display and control system, applied in the direction of static indicators, instruments, etc., can solve the problems of working voltage difference, color cast of display module, etc., and achieve the effect of avoiding the change of resistance value
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Embodiment 1
[0033] refer to figure 1 , 2 , 3 is a schematic diagram of the structure of this embodiment. Among them, such as figure 1 As shown, the LED display screen white balance control system of the present invention is composed of a control terminal, a sending module, a receiving module and an LED module.
[0034] Each pixel on the LED module consists of red, green, and blue lights. The red, green, and blue lights of each pixel can be installed on the light board separately, or they can be packaged together and installed. There is a microprocessor and several digital potentiometers in the LED module. The number of digital potentiometers can be determined according to actual needs. In the preferred solution, the number of digital potentiometers is 3, that is, one digital potentiometer corresponds to a driver IC of a color lamp bead. One end of the digital potentiometer is electrically connected to the current adjustment pin of the driving IC of the same color lamp bead, and the o...
Embodiment 2
[0038] refer to Figure 4 It is another improved embodiment of the present invention. Wherein, the control terminal is a mobile phone, the sending module is a wireless sending module in the prior art such as a Bluetooth or RFID module, and the receiving module is a wireless receiving module in the prior art such as a Bluetooth or RFID module. Because most smart phones have a light sensing module, through which the brightness of ambient light is read. However, the white balance control system of the LED display screen of the present invention can cleverly utilize its light sensing module to perform rapid initial configuration and configuration correction of the white balance of the LED display module and the LED display screen. During the quick initialization configuration process, the white balance configuration program or software is an APP installed on the mobile phone. The APP has the authority to obtain the data collected by the optical sensor module of the mobile phone ...
Embodiment 3
[0041] refer to Figure 5 , is a further optimization carried out according to Embodiment 1 and Embodiment 2. As shown in the figure, the LED module has a serial port cascading module (not shown in the figure), and each LED module is cascaded through the serial port cascading module. Since the LED module has a microprocessor such as a single-chip microcomputer, the LED module is cascaded through the serial port, and data communication becomes simple and convenient. The LED module includes a main control LED module and a controlled LED module. The main control LED module is directly electrically connected to the receiving module to receive configuration instructions and data from the control terminal; The main control LED module obtains and executes configuration instructions and data from the control terminal and transmits them to the next level. The controlled LED module collects the temperature and voltage values obtained by its microprocessor to the main control LED modu...
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