ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,471, issued on May 20, was assigned to GUANGZHOU AUTOMOBILE GROUP Co. LTD. (Guangzhou, China).

"Method for visually tracking gaze point of human eye, vehicle early warning method and device" was invented by Jin Zhang (Guangzhou, China), Zhijun Cai (Guangzhou, China) and Ying Zhang (Guangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for visually tracking a gaze point of a human eye includes: periodically obtaining position coordinates of a human eye of a driver of a host vehicle and coordinates of a gaze point of a sightline of the human eye on an inner side of a current projection screen; in combination with a refractive index ...