ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,555,503, issued on Feb. 17, was assigned to Nippon Seiki Co. Ltd. (Niigata, Japan).

"Head-up display device and control method thereof" was invented by Yuri Sato (Niigata, Japan), Yuji Inosaka (Niigata, Japan) and Yukihisa Hoshi (Niigata, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A head-up display device includes two systems each having a backlight including light sources, a display that causes illumination light of the light sources to pass therethrough to generate display light, and a control unit that controls turning on and off of the light sources, in which, when a virtual image is displayed, a second control unit performs control such t...