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公开(公告)号：US20230385593A1
公开(公告)日：2023-11-30
申请号：US18316964
申请日：2023-05-12
Applicant: STMICROELECTRONICS SA , STMICROELECTRONICS (GRENOBLE 2) SAS
Inventor： Franck Montaudon , Julien Goulier
IPC: G06K19/077
CPC classification number: G06K19/07773
Abstract: In an embodiment an electronic device includes a first electronic circuit having a capacitive element with a variable capacitance, wherein the first electronic circuit is configured to couple the capacitive element to an antenna, to measure, by successive iterations, a first analog signal representative of a variation of an instantaneous electric power received by the antenna or representative of the instantaneous electric power received by the antenna and to modify the capacitance of the capacitive element until an amplitude of the instantaneous electric power received by the antenna is a maximum, wherein the antenna is configured to capture an amplitude-modulated electromagnetic field.
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公开(公告)号：US11824599B2
公开(公告)日：2023-11-21
申请号：US17457561
申请日：2021-12-03
Applicant: STMICROELECTRONICS SA
Inventor： Julien Goulier
CPC classification number: H04B5/0031 , H04B5/0012 , H04B17/104 , H04L27/04
Abstract: A contactless communication method comprises retro-modulation of a carrier signal received at the terminals of an antenna in an alternation of modulated states and unmodulated states. The modulated state comprises a modulation of a load at the terminals of the antenna at zero impedance, and the transitions from the modulated state to the unmodulated state are controlled at an instant determined by a first delay.
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公开(公告)号：US20230223948A1
公开(公告)日：2023-07-13
申请号：US18069459
申请日：2022-12-21
Applicant: STMicroelectronics SA , STMicroelectronics (Genoble2) SAS
Inventor： Julien Goulier , Franck Montaudon
CPC classification number: H03M1/124 , H04B5/0031
Abstract: The present disclosure concerns an electronic device connected to an antenna. The electronic device delivers a first amplitude-modulated analog signal of a signal captured by the antenna, the capture signal associated with an electromagnetic field exhibiting intervals at a minimum level. The electronic device includes a first circuit, a second circuit, and a third circuit. The first circuit delivers a second analog signal by rectification and filters the first analog signal. The second circuit delivers a first binary signal based on the demodulation of the second analog signal. The third circuit couples the antenna to a resistor during each pause. The resistance value of the resistor depends on the maximum amplitude of the electromagnetic field before the pause.
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公开(公告)号：US20220200659A1
公开(公告)日：2022-06-23
申请号：US17457561
申请日：2021-12-03
Applicant: STMICROELECTRONICS SA
Inventor： Julien Goulier
Abstract: A contactless communication method comprises retro-modulation of a carrier signal received at the terminals of an antenna in an alternation of modulated states and unmodulated states. The modulated state comprises a modulation of a load at the terminals of the antenna at zero impedance, and the transitions from the modulated state to the unmodulated state are controlled at an instant determined by a first delay.
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Patent Agency Ranking
公开(公告)号：US20220180004A1
公开(公告)日：2022-06-09
申请号：US17544038
申请日：2021-12-07
Applicant: STMICROELECTRONICS SA , STMicroelectronics (Alps) SAS
Inventor： Julien Goulier , Pascal Bernon
Abstract: The present description concerns an integrated circuit including, between first and second terminals having a first voltage applied therebetween, a load configured to execute instructions, a circuit for delivering a digital signal having at least two bits from a binary signal and a current output digital-to-analog converter controlled by the digital signal and coupled between the first and second terminals in parallel with the load.
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公开(公告)号：US10978910B2
公开(公告)日：2021-04-13
申请号：US16545664
申请日：2019-08-20
Applicant: STMicroelectronics SA
Inventor： Julien Goulier
Abstract: A contactless card is powered by an antenna connected to the input of a rectifier. An output of the rectifier is coupled to a processing unit that consumes a first current output from the rectifier. A current regulation circuit is connected to the output of the rectifier. The current regulation circuit operates to absorb a second current from the output of the rectifier such that a sum of the first and second currents is a constant current.
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公开(公告)号：US10432023B2
公开(公告)日：2019-10-01
申请号：US15041181
申请日：2016-02-11
Applicant: STMicroelectronics SA
Inventor： Julien Goulier
Abstract: A contactless card is powered by an antenna connected to the input of a rectifier. An output of the rectifier is coupled to a processing unit that consumes a first current output from the rectifier. A current regulation circuit is connected to the output of the rectifier. The current regulation circuit operates to absorb a second current from the output of the rectifier such that a sum of the first and second currents is a constant current.
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公开(公告)号：US20170005517A1
公开(公告)日：2017-01-05
申请号：US15041181
申请日：2016-02-11
Applicant: STMicroelectronics SA
Inventor： Julien Goulier
Abstract: A contactless card is powered by an antenna connected to the input of a rectifier. An output of the rectifier is coupled to a processing unit that consumes a first current output from the rectifier. A current regulation circuit is connected to the output of the rectifier. The current regulation circuit operates to absorb a second current from the output of the rectifier such that a sum of the first and second currents is a constant current.
Abstract translation: 非接触式卡由连接到整流器输入端的天线供电。 整流器的输出耦合到消耗来自整流器的第一电流输出的处理单元。 电流调节电路连接到整流器的输出端。 电流调节电路用于从整流器的输出吸收第二电流，使得第一和第二电流的和是恒定电流。
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公开(公告)号：US11593577B2
公开(公告)日：2023-02-28
申请号：US16660373
申请日：2019-10-22
Applicant: STMicroelectronics SA
Inventor： Julien Goulier
Abstract: A method for limiting voltage at an input of an integrated circuit of a transponder contactlessly communicating with a reader includes, during the contactless communication: receiving a carrier signal at an antenna of the transponder; and controlling gate voltages of two transistors of a rectifier circuit of the transponder so as to modify an input impedance of the integrated circuit, wherein the two transistors are cross-coupled between terminals of the antenna and a reference voltage.
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