公开(公告)号：US20230170938A1

公开(公告)日：2023-06-01

申请号：US18153958

申请日：2023-01-12

Applicant: STMICROELECTRONICS LTD ,  STMICROELECTRONICS (ROUSSET) SAS

Inventor： Chia Hao CHEN ,  Nicolas CORDIER

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

CPC classification number: H04B5/0037 ,  H02J50/80 ,  H02J50/90 ,  H02J50/10 ,  H04B5/0031 ,  H04B5/0081

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.

公开(公告)号：US20220369006A1

公开(公告)日：2022-11-17

申请号：US17735968

申请日：2022-05-03

Applicant: STMICROELECTRONICS LTD ,  STMICROELECTRONICS (ROUSSET) SAS ,  STMicroelectronics Razvoj Polprevodnikov D.O.O.

Inventor： Nicolas CORDIER ,  Chia Hao CHEN ,  Karel BLAHA

IPC: H04Q9/06

Abstract: Provided is a device comprising a frequency demodulator and an amplitude demodulator. The device is configured to use, in a first mode, both the frequency demodulator and the amplitude demodulator in parallel and to activate a radio frequency identification (RFID) card mode or a Qi charger mode based on results provided by said demodulators.

公开(公告)号：US20220239335A1

公开(公告)日：2022-07-28

申请号：US17575523

申请日：2022-01-13

Applicant: STMicroelectronics Ltd ,  STMicroelectronics (Rousset) SAS

Inventor： Nicolas CORDIER ,  Chia-Hao CHEN

IPC: H04B5/00 ,  H04W24/08

Abstract: A method is provided that is implemented by a first NFC device configured in reader mode. The method includes evaluating an information about the coupling between the first NFC device and a second NFC device configured in card mode, as a function of the position of an antenna of the first NFC device with respect to an antenna of the second NFC device. The method further includes indicating the information by a user interface of the first device.

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.

公开(公告)号：US20220231543A1

公开(公告)日：2022-07-21

申请号：US17571705

申请日：2022-01-10

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Anthony TORNAMBE ,  Nicolas CORDIER

IPC: H02J50/80 ,  H02J50/50 ,  H02J50/40

Abstract: A contactless device includes an impedance matching and filter circuit connected to an antenna and being on the one hand operable for contactlessly communicating with a second device via the antenna, and on the other hand operable for contactlessly charging a rechargeable power supply of a third device via the antenna. A method of control includes modifying the impedance matching and filter circuit of the contactless device depending on whether the contactless device carries out the contactless communication or carries out the contactless charging.

公开(公告)号：US20210226668A1

公开(公告)日：2021-07-22

申请号：US17147919

申请日：2021-01-13

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Nicolas CORDIER ,  Pierre RIZZO ,  Alexandre TRAMONI

IPC: H04B5/00 ,  H01Q3/24

Abstract: A first electronic device includes a first near-field communication antenna and a second near-field communication antenna. The first and second near-field communication antennas of the first electronic device are alternately activated. The first antenna is dedicated to supporting communication between the first electronic device and a second electronic device. The second antenna is dedicated to support charging of the second electronic device.

公开(公告)号：US20230189149A1

公开(公告)日：2023-06-15

申请号：US18077396

申请日：2022-12-08

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Nicolas CORDIER ,  Guillaume JAUNET

IPC: H04W52/02 ,  H04B5/02

CPC classification number: H04W52/0229 ,  H04B5/02

Abstract: 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 to potentially detect the second NFC device. Validation of detection occurs when one of the amplitude and the phase of the signal is outside the first thresholds adjusted as a function of the time variation gradient. Validation detection also occurs when one of the amplitude and the phase of the signal adjusted as a function of the time variation gradient is outside the first thresholds.

公开(公告)号：US20200271716A1

公开(公告)日：2020-08-27

申请号：US16794977

申请日：2020-02-19

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Nicolas CORDIER

IPC: G01R31/28

Abstract: An electronic assembly includes a board and a system mounted to the board. The system includes an impedance matching circuit coupled to a contactless component. A detection circuit operates to carrying out a process for detecting on the board of potential faults in the system mounted to the board. The detection circuit includes a circuit incorporated into the contactless component itself and configured to carrying out a first part of the process for detecting. A processing circuit of the detection circuit performs a second part of the process for detecting based on results of the first part.

公开(公告)号：US20230252258A1

公开(公告)日：2023-08-10

申请号：US18107245

申请日：2023-02-08

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Nicolas CORDIER

IPC: G06K19/07 ,  H05K1/18

CPC classification number: G06K19/0723 ,  H05K1/181 ,  H05K2201/10098 ,  H05K2201/10151

Abstract: A contactless communication device includes an electronic integrated circuit chip and an antenna coupled to the electronic integrated circuit chip to supply an electric signal for powering the electronic integrated circuit chip. An ambient luminosity detection element is coupled to the electronic integrated circuit chip. An ambient luminosity level measured by the ambient luminosity detection element is supplied to the electronic integrated circuit chip for comparison to a darkness threshold. A contactless communication is authorized only when the measured ambient luminosity level is greater than the darkness threshold.

公开(公告)号：US20230223989A1

公开(公告)日：2023-07-13

申请号：US18094309

申请日：2023-01-06

Applicant: STMicroelectronics (Rousset) SAS ,  STMicroelectronics SA ,  STMicroelectronics Razvoj Polprevodnikov D.O.O.

Inventor： Alexandre TRAMONI ,  Kosta KOVACIC ,  Florent SIBILLE ,  Nicolas CORDIER ,  Anthony TORNAMBE ,  Jean Remi RUIZ ,  Guillaume JAUNET

IPC: H04B5/00

CPC classification number: H04B5/0025 ,  H04B5/0056

Abstract: A near-field communication circuit of a first NFC device alternates, in low power mode, between: first phases of emission of field bursts and second phases spanning an entire duration separating two successive first phases. Each second phase includes a field detector enabling phase. In one implementation, the field detector enabling phase extends all along a duration of the second phase. In an alternate implementation, the field detector enabling phase is interrupted by field detector disabling phases. Each field detector disabling phase has a duration shorter than a minimum duration of each first phase.