ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,458,268, issued on Nov. 4, was assigned to Nokia Technologies Oy (Espoo, Finland).
"Bio-signal detection" was invented by Antti Salo (Lohja, Finland) and Kim Blomqvist (Espoo, Finland).
According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus comprising: a displacement current sensor configured to measure for a subject one or more sensed electrical signals; and circuitry configured to process the one or more sensed electrical signals to obtain an electrocardiogram signal and a variable impedance signal caused by an arterial pulse wave."
The patent was filed on Nov. 20, 2018, under Application No. 16/761,669.
*For further information, including images,...