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.

公开(公告)号：US20220094393A1

公开(公告)日：2022-03-24

申请号：US17475211

申请日：2021-09-14

Applicant: STMICROELECTRONICS LTD ,  STMICROELECTRONICS (ROUSSET) SAS

Inventor： Chia Hao CHEN ,  Nicolas CORDIER

IPC: H04B5/00 ,  H02J50/80 ,  H02J50/10 ,  H02J50/90

Abstract: The present disclosure relates to a method for aligning a smartphone providing NFC wireless power for charging a battery of a device, the method comprising: emitting, with a first NFC antenna of the smartphone, an NFC field for wirelessly charging the battery of the device comprising a second NFC antenna; obtaining, with the smartphone, a measured value of a signal representative of the NFC field strength between the smartphone and the device; determining, by the smartphone, a range of values of a plurality of ranges of values the measured value belongs; and emitting, by the smartphone, at least one notification signal to a user with a frequency determined by the determined range of values.