High-definition point-to-point display of interactive smart tablet

Point-to-point display, also called 1: 1 Map or Dot by Dot. It can be seen literally that it has a one-to-one correspondence. In essence, it represents a suitable match between the two resolutions.

In general, the resolution of the imaging device of the display device is fixed, and we generally call it "physical resolution". For example, a 65-inch interactive smart tablet with a physical resolution of 1920 × 1080 means that its imaging device has 1920 × 1080 pixels. Pixels are the basic unit that constitutes an image. Only when the resolution of the signal source and the physical resolution of the display screen are exactly the same, can their pixels have a one-to-one correspondence. In this case, the image displayed on the screen exactly matches the image of the signal source. If the two can't correspond to each other, the image will be blurred, just like the photo effect of shaking hands when taking pictures. We can simply understand that when a person looks in a mirror, the point-to-point display is like a flat mirror with a smooth surface. We can see the high-fidelity mapping effect; in the case of non-point-to-point display, it is like a surface. There are worn concave and convex mirrors, and the figure seen is distorted.

At present, the physical resolution of the common LCD screen of the interactive smart tablet is mainly 1920 × 1080. In practical applications, we often use the computer as the signal source of the interactive smart tablet, and put forward higher requirements for the point-to-point display. On the one hand, it depends on the quality of the display and the computer's graphics card. On the other hand, when the "power" of the display and the graphics card is sufficient, the "level" of the LCD driver circuit plays a crucial role. In operation, the liquid crystal drive uses an electric field to change the state of the liquid crystal and control how much light penetrates. There is a negative correlation between voltage and transmitted light. Therefore, the liquid crystal drive plays a role in controlling the brightness of light by the level of the voltage applied to the liquid crystal. To achieve point-to-point display, high-level LCD board driver is the premise and foundation. Therefore, brands with more advanced LCD driver design level, such as Shiwo, can achieve true point-to-point display.

Another key technology is the signal transmission method. Traditional VGA belongs to analog signal transmission, and a conversion process is required after the signal is transmitted. Just as the spread of information in the real world may cause information distortion, when the signal is transmitted through the VGA interface, the video signal will be greatly damaged and distorted. The resolution can only reach up to 1360 × 768, and the picture will give people a "look in the fog" Flower "feeling. HDMI high-definition digital signal interface is an interface that specifically transmits audio and video digital signals at the same time. There is no need to undergo a conversion, and there is no need to undergo distortion during the signal transmission process. Its situation.

Of course, in order to truly achieve perfect point-to-point display, there are still high technical requirements. At present, there are few brands that can realize these technologies. Brands such as Shiwo can now achieve 1080P point-to-point high-definition display, which is the whole of the interactive smart tablet industry. In one direction of effort.

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