公开(公告)号：US11838024B2

公开(公告)日：2023-12-05

申请号：US17119865

申请日：2020-12-11

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Alexandre Tramoni ,  Jimmy Fort

IPC: H03K3/0233 ,  G06F1/3287 ,  H03K17/687

CPC classification number: H03K3/02337 ,  G06F1/3287 ,  H03K17/687

Abstract: An embodiment provides a circuit of cyclic activation of an electronic function including a hysteresis comparator controlling the charge of a capacitive element powering the function.

公开(公告)号：US11722872B2

公开(公告)日：2023-08-08

申请号：US17478399

申请日：2021-09-17

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Alexandre Tramoni

IPC: H04W4/80 ,  H02J50/80 ,  H02J50/10 ,  H04B5/00

CPC classification number: H04W4/80 ,  H02J50/10 ,  H02J50/80 ,  H04B5/0025

Abstract: A method includes detecting, by a first near-field communication device, the presence of a second near-field communication device. In a case where the second device is intended to be charged in near-field by the first device, the method further includes adjusting, by a control device, an impedance of an impedance matching circuit forming part of a near-field communication circuit of the first device.

公开(公告)号：US20220149894A1

公开(公告)日：2022-05-12

申请号：US17499371

申请日：2021-10-12

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Alexandre Tramoni

IPC: H04B5/00 ,  H02J50/12

Abstract: An embodiment of the present description concerns a method wherein a time of beginning of a periodic step of activation of a near-field communication circuit of a first device, charged in near field by a second device, is adjusted according to a frequency of an electromagnetic field emitted by the second device.

公开(公告)号：US20210099162A1

公开(公告)日：2021-04-01

申请号：US17119865

申请日：2020-12-11

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Alexandre Tramoni ,  Jimmy Fort

IPC: H03K4/50

Abstract: An embodiment provides a circuit of cyclic activation of an electronic function including a hysteresis comparator controlling the charge of a capacitive element powering the function.

公开(公告)号：US20200382165A1

公开(公告)日：2020-12-03

申请号：US16879314

申请日：2020-05-20

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Alexandre Tramoni

IPC: H04B5/00

Abstract: The present disclosure relates to a detection method or device, by a first NFC device generating an electromagnetic field for recharging a battery of a second NFC device, of a disruptive condition, in which thresholds (MHTH, MLTH, PHTH, PLTH) for detection of a variation of the field are adjusted in real time during the recharging.

公开(公告)号：US20180091192A1

公开(公告)日：2018-03-29

申请号：US15444576

申请日：2017-02-28

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Alexandre Tramoni

IPC: H04B5/00 ,  G01S13/04

CPC classification number: H04B5/0031 ,  G01S13/04 ,  G06K7/10128

Abstract: A method can be used for detecting a potential presence of an object by a reader capable of mutually communicating via a contactless communications protocol. An antenna of the reader transmits a magnetic field on a carrier signal having a sub-carrier modulated by a first data sequence. The modulated sub-carrier is non-interpretable by the object. The antenna of the reader receives a signal resulting from the transmission. The reader demodulates the sub-carrier of the resulting signal so as to extract a second data sequence from the resulting signal. The first data sequence and second data sequence are correlated and the potential presence or absence of the object is determined based upon the result of the correlating.

公开(公告)号：US20180034497A1

公开(公告)日：2018-02-01

申请号：US15728150

申请日：2017-10-09

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Alexandre Tramoni

IPC: H04B1/40 ,  H04B5/00 ,  H04B1/18

CPC classification number: H04B1/40 ,  H04B1/0458 ,  H04B1/18 ,  H04B5/0025

Abstract: A contactless component, connected to an antenna, includes a plurality of terminals and a first, second, third, and fourth plurality of switchable auxiliary capacitors. The plurality of terminals include a first output terminal, a second output terminal, a first auxiliary terminal, and a second auxiliary terminal. Each of the first plurality of switchable auxiliary capacitors is connected between the first auxiliary terminal and the first output terminal. Each of the second plurality of switchable auxiliary capacitors is coupled between the first auxiliary terminal and a neutral point. Each of the third plurality of switchable auxiliary capacitors is coupled between the second auxiliary terminal and the second output terminal of the contactless component. Each of the fourth plurality of switchable auxiliary capacitors is coupled between the second auxiliary terminal and the neutral point.

公开(公告)号：US09729202B2

公开(公告)日：2017-08-08

申请号：US15198758

申请日：2016-06-30

Applicant: STMICROELECTRONICS (ROUSSET) SAS

Inventor： Alexandre Tramoni ,  Pierre Rizzo

IPC: H04B5/00 ,  H03H7/40 ,  H04W76/02

CPC classification number: H04B5/0031 ,  H03H7/40 ,  H04W76/14

Abstract: A first component (CMP1) is connected to the antenna (ANT) and to an impedance matching circuit (CAI) configurable on command and connected to the antenna, and in the absence of another component (CMP2) connected to the antenna, the impedance matching circuit is placed in a first configuration in which it forms with the first component and the antenna a resonant circuit having a first resonant frequency compatible with a carrier frequency. In the presence of a second component (CMP2) connected to the antenna, the impedance matching circuit is placed in a second configuration in which it forms with the first component, the second component and the antenna a resonant circuit having a second resonant frequency compatible with the carrier frequency.

公开(公告)号：US20140022143A1

公开(公告)日：2014-01-23

申请号：US13938024

申请日：2013-07-09

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Alexandre Tramoni

IPC: H01Q1/50

CPC classification number: H01Q1/50 ,  H04B5/0043 ,  H04B5/0081 ,  H04B17/12 ,  H04B17/18 ,  H04B17/21

Abstract: An NFC component includes a first interface that can be used in reader mode and is configured to be connected to an antenna via an impedance matching external circuit. A second interface can be used in card mode and in reader mode and is configured to be connected to the antenna and to the first interface via the impedance matching external circuit. An internal module includes a first detection circuit configured to deliver a first detection signal that represents the phase antenna matching quality when the impedance matching external circuit and the antenna are indeed connected between the first interface and the second interface. The internal module is further configured to deliver a check signal from at least the first detection signal.

Abstract translation: NFC组件包括可以在读取器模式下使用的第一接口，并且被配置为经由阻抗匹配外部电路连接到天线。 第二接口可以用于卡模式和读卡器模式，并且被配置为通过阻抗匹配外部电路连接到天线和第一接口。 内部模块包括第一检测电路，其被配置为当阻抗匹配外部电路和天线确实连接在第一接口和第二接口之间时传送表示相位天线匹配质量的第一检测信号。 内部模块还被配置为从至少第一检测信号传递检查信号。

公开(公告)号：US12253894B2

公开(公告)日：2025-03-18

申请号：US17884245

申请日：2022-08-09

Applicant: STMICROELECTRONICS (ROUSSET) SAS ,  STMICROELECTRONICS (ALPS) SAS

Inventor： Alexandre Tramoni ,  Patrick Arnould

IPC: G06F1/00 ,  G06F1/26 ,  G06F11/30

Abstract: The present disclosure relates to a method for powering an electronic device. The electronic device includes at least one universal integrated circuit card or at least one secure element; at least one power supply circuit for said card or secure element; and at least one near field communication module. When the near field communication module changes from a standby or inactive state to an active state, the following successive operations are performed: —the components and circuits of said electronic device are started; —programs of the electronic device and said secure card or element are started at the same time.