ALEXANDRIA, Va., June 17 -- United States Patent no. 12,313,787, issued on May 27, was assigned to VIVO MOBILE COMMUNICATION Co. LTD. (Dongguan, China).
"Electronic device, and interaction method and device" was invented by Junjie Duan (Dongguan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electronic device includes a rotating member and an infrared module that are disposed opposite to each other. A surface of the rotating member opposite to the infrared module is provided with an annular region, a reflective surface is disposed on the annular region, and a width of the reflective surface gradually increases or gradually decreases along a circumferential direction of the annular region. The infra...