ALEXANDRIA, Va., March 17 -- United States Patent no. 12,575,751, issued on March 17.

"Portable heart monitor" was invented by Kuo-Yuan Chang (New Taipei, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A portable heart monitor includes a detecting unit to output a detecting light beam and receive a physiological response signal, wherein the physiological response signal is generated by the reaction of the detecting light beam and a finger of a user. The physiological response signal includes pulse waves of a perfusion index (PI). A processing and analyzing unit processes and analyzes the physiological response signal to acquire an analysis result, which is to be shown on a prompting unit. The analysis...