公开(公告)号：US20210157392A1

公开(公告)日：2021-05-27

申请号：US17251738

申请日：2019-06-25

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Alexandre Tramoni ,  Jimmy Fort

IPC: G06F1/3287 ,  H03K3/0233

Abstract: An embodiment of the present disclosure relates to a circuit of cyclic activation of an electronic function comprising a hysteresis comparator controlling the charge of a capacitive element powering the function.

公开(公告)号：US11012118B2

公开(公告)日：2021-05-18

申请号：US15989554

申请日：2018-05-25

Applicant: STMicroelectronics (Rousset) SAS ,  STMicroelectronics razvoj polprevodnikov d.o.o.

Inventor： Alexandre Tramoni ,  Maksimiljan Stiglic ,  Kosta Kovacic

IPC: H04B5/00

Abstract: A near field communication (NFC) method includes activating an NFC device second device in response to a first electromagnetic field generated by a nearby NFC device. The NFC device generates a second electromagnetic field after being activated. The first NFC device can detect the second electromagnetic field and initiate a near field communication process.

公开(公告)号：US20210067198A1

公开(公告)日：2021-03-04

申请号：US16996563

申请日：2020-08-18

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Alexandre Tramoni

IPC: H04B5/00

Abstract: A device includes a first circuit that includes a near-field emission circuit, a second circuit, and a hardware connection linking the first circuit to the second circuit. The hardware connection is dedicated to a priority management between the first circuit and the second circuit. In addition, priority management information can be communicated between a near-field emission circuit and a second circuit. The communicating occurs between a dedicated hardware connection connecting the near-field emission circuit to the second circuit.

公开(公告)号：US20200322149A1

公开(公告)日：2020-10-08

申请号：US16815835

申请日：2020-03-11

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Alexandre Tramoni ,  Christophe Laurencin

IPC: H04L9/32 ,  G06K19/077

Abstract: An electronic chip with a communication interface is disclosed. In an embodiment, an electronic device includes an electronic chip having a plurality of ISO/IEC 7816 standardized interfaces.

公开(公告)号：US10770891B2

公开(公告)日：2020-09-08

申请号：US15842621

申请日：2017-12-14

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Alexandre Tramoni

IPC: H02H9/04 ,  H04B5/00 ,  G06K7/10 ,  G06K19/07 ,  H02J50/10 ,  H02J7/02

Abstract: The invention relates to a device for protecting a near field communication router against possible over-voltages picked up by an antenna. The device includes two voltage-limiter elements between terminals of the antenna and a ground. A circuit detects the presence of an electromagnetic field in the vicinity of an operating frequency of the router, and controls the limiter elements, the limiter elements being active by default.

公开(公告)号：US10749576B2

公开(公告)日：2020-08-18

申请号：US16545115

申请日：2019-08-20

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Alexandre Tramoni

IPC: H04B5/00 ,  H03K3/03 ,  H02M7/06

Abstract: A device includes an electronic circuit and a voltage-controlled oscillator configured to receive information representative of a power supply voltage of the device. The voltage-controlled oscillator is coupled to the electronic circuit. A first counter is configured to count pulses supplied by the voltage-controlled oscillator and a second counter is configured to count pulses of a clock signal. The device is configured to estimate an average power of the electronic circuit based on the pulses counted by the first counter.

公开(公告)号：US10727906B2

公开(公告)日：2020-07-28

申请号：US16542747

申请日：2019-08-16

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Alexandre Tramoni

IPC: H04B5/00 ,  H03K3/03 ,  H02M7/06

Abstract: A near-field communication device includes an oscillating circuit, a rectifying bridge configured to rectify a voltage across the oscillating circuit, and a voltage-controlled oscillator configured to supply a reference frequency. The voltage-controlled oscillator is powered and controlled by a voltage that is a function of an output voltage of the rectifying bridge.

公开(公告)号：US10326193B2

公开(公告)日：2019-06-18

申请号：US15951774

申请日：2018-04-12

Applicant: STMicroelectronics (Rousset) SAS ,  STMicroelectronics razvoj polprevodnikov d.o.o.

Inventor： Alexandre Tramoni ,  Nicolas Cordier ,  Maksimiljan Stiglic

IPC: G06K7/10 ,  H01Q1/00 ,  H04B5/00 ,  H04W52/00 ,  G01R21/00

Abstract: In some embodiments, a contactless communication device includes an antenna, and a driving stage having a power supply terminal configured to receive a power supply voltage, where the driving stage is configured to deliver a current to the antenna. The device further includes a monitoring circuit configured to monitor the power transmitted by the antenna. The monitoring circuit is configured, in the presence of a request for a reduction in a current level of transmitted power, to reduce the power supply voltage of the driving stage down to a target value corresponding to a new level of the transmitted power less than the current level.

公开(公告)号：US10298295B2

公开(公告)日：2019-05-21

申请号：US16118175

申请日：2018-08-30

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Alexandre Tramoni

IPC: H04B5/00 ,  G06K7/10 ,  G01S13/04

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：US20190068245A1

公开(公告)日：2019-02-28

申请号：US16102068

申请日：2018-08-13

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Alexandre Tramoni

IPC: H04B5/00

CPC classification number: H04B5/0012 ,  H03H7/38 ,  H04B5/0031 ,  H04B5/0056 ,  H04B5/0062 ,  H04B5/0081

Abstract: A near-field communication circuit includes an oscillating circuit having a controllable capacitor. A control circuit is coupled to the oscillating circuit to control the controllable capacitor. A battery is coupled to the control circuit to enable control when the near-field communication circuit is in a standby mode. The near-field communication circuit can be utilized by a mobile communication device.