How to choose the interface of touch screen monitors?

In the previous article, we learned that the three common interfaces for touch screen monitors are VGA, HDMI, and USB interfaces, and in professional application scenarios, interface selection directly affects the final performance of touch screen monitors. The technical team of Shenzhen Xinlilai Touch Technology o., Ltd. deeply analyzes the technical characteristics of three interfaces from the perspective of signal transmission for touch screen displays.
 

The VGA interface uses analog signal transmission, and its image quality is easily affected by cable quality and transmission distance. It is recommended to use high-quality cables with signal amplifiers for long-distance transmission. We once provided a VGA solution for an airport's flight information display system, which maintained clear image display within a distance of 30 meters through special signal compensation technology.

This solution is particularly suitable for industrial sites that require long-distance wiring.
HDMI, as a fully digital interface, has a natural advantage in signal fidelity. Our test data shows that at the same resolution, the sharpness of HDMI output images is about 15% higher than VGA. The latest HDMI fiber optic transmission solution has broken through the length limit of traditional copper cables and supports lossless transmission up to 100 meters. This technology has been validated in multiple large-scale digital signage projects.
 

The USB interface performs the best in terms of latency. Our USB 3.1 video solution, developed specifically for esports touch screen monitors, has end-to-end latency controlled within 8ms, fully meeting the stringent requirements of professional players. Meanwhile, the plug and play feature of the USB interface also makes device maintenance exceptionally simple. In recent educational all-in-one machine projects, the failure rate of devices using USB interfaces has been reduced by 60% compared to traditional solutions.