ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,408,875, issued on Sept. 9.
"Adaptive correlation methods for heartbeat detection" was invented by Bruce Hopenfeld (New Harmony, Utah).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for detecting heart beats is disclosed. A plurality of sensors are configured to receive a cardiac signal and another cardiac signal or a signal correlated with a noise source. A processor is configured to detect candidate peaks in a cardiac signal and select a subset of the candidate peaks for temporal correlation with features, such as peaks, in another cardiac signal or noise correlated signal. This relationship is quantified by a correlation measure. The correla...