ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,532,261, issued on Jan. 20, was assigned to STMicroelectronics (Rousset) SAS (Rousset, France).
"NFC device detection" was invented by Nicolas Cordier (Aix-en-Provence, France) and Guillaume Jaunet (Pegomas, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "In the case of a potential detection, by a first near field communication (NFC) device, of a second NFC device, a validation of this detection is performed according to the time variation gradient of at least one environmental condition of the first device. A value of one of an amplitude and an phase of a signal across an oscillating circuit of the first NFC device is compared to first thresholds...