For the head mounted VR / AR equipment, it is still facing a big test in terms of performance. Whether it’s connected to additional computing devices or through on-board chips, it provides a stand-alone experience. As for the augmented reality system, it also relies on the collection of various environmental data (such as depth sensor) to deliver the expected mixed reality image to the user, and involves real-time tracking and analysis of the user’s vision (eye movement direction). < / P > < p > after years of improvement, VR / AR system has been able to achieve relatively high resolution and frame rate, but a large amount of data analysis still brings great pressure to the equipment. < p > < p > interestingly, in a patent released on Tuesday, the U.S. patent and Trademark Office (USPTO) revealed a patent application by apple for a system called “adaptive pre filtering of video data based on gaze direction”. < / P > < p > in short, the patent envisages dividing the environmental image into different regions, and then filtering the non key visual areas according to typical AR / VR data points (such as head position and user actions). < / P > < p > the filtered data can be transmitted to the computing device through wired or wireless mode, and then fed back to the head display for display, so as to cycle. The logic behind it is that users will not always pay attention to the complete information in the environment. < / P > < p > when their eyes move to another direction, their eyes are more likely to aim to one side, so it is meaningless to collect and calculate the data in the non staring area. < / P > < p > in order to achieve this, the system needs to track and analyze the user’s visual, then apply the data points to the exact image data frame, and give priority to the key image data. The gaze detection related to the second frame can reduce the influence caused by the change of eye focus. < / P > < p > of course, the idea is not Apple’s first. Other manufacturers have also submitted methods to render the focus area image with high accuracy and reduce the image resolution of the surrounding area appropriately. It remains to be seen when Apple will apply the technology to actual products. Spontaneous combustion at a Guangzhou Motor vehicle intersection and other traffic lights in Shenzhen