公开(公告)号：US20220311476A1

公开(公告)日：2022-09-29

申请号：US17701416

申请日：2022-03-22

Applicant: STMICROELECTRONICS (ROUSSET) SAS

Inventor： Nicolas CORDIER

IPC: H04B5/00 ,  H04B17/318

Abstract: The present disclosure relates to a method implemented by a first NFC device, wherein the establishment of a transaction with a second NFC device configured in reader mode is performed when the signal level received by the first device, configured in card mode, reaches a first threshold, depending on the type of modulation technology of the second device.

公开(公告)号：US20220271568A1

公开(公告)日：2022-08-25

申请号：US17676729

申请日：2022-02-21

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Nicolas CORDIER ,  Anthony TORNAMBE ,  Jeremy QUIGNON

IPC: H02J50/20 ,  H02J7/00 ,  H02J50/80 ,  H04B5/00

Abstract: A device includes: an NFC controller; a microcontroller; a charging circuit for an external battery; an energy recovery device; an antenna; and a switch. The NFC controller is configured to selectively control the switch in order to couple the energy recovery device to the charging circuit.