ALEXANDRIA, Va., May 5 -- United States Patent no. 12,616,391, issued on May 5, was assigned to Hewlett-Packard Development Co. LP (Spring, Texas) and Purdue Research Foundation (West Lafayette, Ind.).

"Neural networks to determine respiration rates" was invented by Tianqi Guo (San Diego), Qian Lin (Palo Alto, Calif.) and Jan Allebach (West Lafayette, Ind.).

According to the abstract* released by the U.S. Patent & Trademark Office: "In some examples, a non-transitory computer-readable medium stores executable code, which, when executed by a processor, causes the processor to receive a video of at least part of a human torso, use a neural network to produce multiple vector fields based on the video, the multiple vector fields representing ...