touch screen display materials.The resolution of the early infrared touch screen was directly determined by the number of infrared pairs. For the receiving tube, there are only two cases of receiving and not receiving signals, and the touch resolution is equal to the physical resolution of the screen. Therefore, the resolution of the touch screen is relatively low. However, if the received signal strength is quantized and graded, then for the received signal, not only must it be judged whether it is blocked, but also the degree of blocking. The different positions of the touch object will determine whether there is a received signal and the strength of the received signal. It is also different, so the position of the touch object has a direct correspondence with the intensity of the received infrared signal. Even if the touch object moves a very small distance, the signal intensity will change, which can obtain extremely high resolution. The resolution of the touch screen in this case is mainly determined by the number of infrared pairs and the accuracy of the analog-to-digital conversion. The touch screen resolution is the product of the number of infrared pairs and the resolution that can be achieved by a single pair of infrared tubes. The touch screen coordinates are determined by the physical coordinates of the infrared tube and the coordinates of the touch point in the corresponding tube. Based on the above principles, the luminous flux of the infrared receiver tube collected each time can be 256-level quantized. In this way, the minimum resolution obtained is the width of the receiver tube / 256, thereby greatly improving the resolution of the infrared touch screen. This method can achieve 2046 ?? 2046 accuracy.

touch screen display materials.The resolution of the early infrared touch screen was directly determined by the number of infrared pairs. For the receiving tube, there are only two cases of receiving and not receiving signals, and the touch resolution is equal to the physical resolution of the screen. Therefore, the resolution of the touch screen is relatively low. However, if the received signal strength is quantized and graded, then for the received signal, not only must it be judged whether it is blocked, but also the degree of blocking. The different positions of the touch object will determine whether there is a received signal and the strength of the received signal. It is also different, so the position of the touch object has a direct correspondence with the intensity of the received infrared signal. Even if the touch object moves a very small distance, the signal intensity will change, which can obtain extremely high resolution. The resolution of the touch screen in this case is mainly determined by the number of infrared pairs and the accuracy of the analog-to-digital conversion. The touch screen resolution is the product of the number of infrared pairs and the resolution that can be achieved by a single pair of infrared tubes. The touch screen coordinates are determined by the physical coordinates of the infrared tube and the coordinates of the touch point in the corresponding tube. Based on the above principles, the luminous flux of the infrared receiver tube collected each time can be 256-level quantized. In this way, the minimum resolution obtained is the width of the receiver tube / 256, thereby greatly improving the resolution of the infrared touch screen. This method can achieve 2046 ?? 2046 accuracy. IQTouch K interactive touch screen feature 20-point touch and dual system -- Android 8.0 system and optional OPS Windows 10Pro system. Its 4K UHD resolution facilitates presentations and collaboration. With optional multi-screen casting software, IQClass 6.0 and installation-free IQClass Plus software, IQTouch K Series can help create an interactive and collaborative teaching atmosphere in class.