ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,484,822, issued on Dec. 2, was assigned to ZHEJIANG LAB (Hangzhou, China).

"Real-time evaluation method and system for virtual reality immersion effect" was invented by Guanxiong Pei (Hangzhou, China) and Taihao Li (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A real-time evaluation method and system for a virtual reality (VR) immersion effect are provided. An electroencephalogram signal is collected while a VR video is played, a degree of emotional arousal and a degree of cognitive absorption are calculated in real time based on energy of frequency bands Alpha, Beta, and Theta that is obtained after wavelet transform, and finally, an i...