ALEXANDRIA, Va., June 19 -- United States Patent no. 12,329,521, issued on June 17, was assigned to PixArt Imaging Inc. (Hsin-Chu, Taiwan).

"Ring of detecting physiological information" was invented by Sen-Huang Huang (Hsin-Chu, Taiwan), Ming Shun Manson Fei (Hsin-Chu, Taiwan) and Cong-Jun Xia (Hsin-Chu, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A ring of detecting physiological information of a user includes a case and a detection assembly. The case has an inner space including an annular region and a sunken region. The sunken region has a first lateral side, a lower bottom and a second lateral side. The first lateral side and the second lateral side are located on two sides of the sunken region...