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公开(公告)号：US12068807B2
公开(公告)日：2024-08-20
申请号：US18446224
申请日：2023-08-08
Inventor： Gustavo Jose Henriques Patricio , Anton Stern
Abstract: The disclosure relates to a modified NFC framing is used by a reader and selected devices during at least a part of the communication between the reader and the selected devices. The reader and the selected devices store modification rules for modifying the frames. Devices not storing those modification rules will discard the received modified frames.
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公开(公告)号：US11736148B2
公开(公告)日：2023-08-22
申请号：US17385122
申请日：2021-07-26
Inventor： Marc Houdebine , Kosta Kovacic , Florent Sibille
CPC classification number: H04B5/0056 , H04L7/0331 , H04L7/04
Abstract: An embodiment device comprises a phase locked loop and a frequency locked loop having in common the same controlled oscillator. The device is firstly placed in the card emulation mode at the beginning of a communication between the contactless communication device and a contactless reader, the firstly placing comprising synchronizing within the contactless device, an ALM carrier frequency with a reader carrier frequency by operating at least the phase locked loop, and upon reception by the contactless communication device of an indication sent by the reader indicating a further communication in a peer to peer mode with the reader, the device is secondly placed in the peer to peer mode, the secondly placing including deactivating the phase locked loop and operating the frequency locked loop with a reference clock signal and a frequency set point depending on the reader carrier frequency and the frequency of the reference clock signal.
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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.
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公开(公告)号：US20180343037A1
公开(公告)日：2018-11-29
申请号：US15989554
申请日：2018-05-25
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.
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公开(公告)号：US11663435B2
公开(公告)日：2023-05-30
申请号：US17096480
申请日：2020-11-12
Inventor： Kosta Kovacic , Alexandre Tramoni
CPC classification number: G06K19/0701 , G06K7/0008 , H02J50/80 , H04B5/0037
Abstract: In an embodiment a method for dynamic power control of a power level transmitted by an antenna of a contactless reader is disclosed. The method may include supplying a power to the antenna and performing at least one power adjusting cycle for adjusting a power level during a contactless transaction with a transponder, each power adjusting cycle including modifying the power supplied to the antenna to a predetermined level of power, performing a first measuring of a loading effect on the antenna at the predetermined level of power and adjusting the power level according to the measured loading effect.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20210081622A1
公开(公告)日：2021-03-18
申请号：US17102917
申请日：2020-11-24
Inventor： Maksimiljan Stiglic , Iztok Bratuz , Albin Pevec , Roman Benkovic
Abstract: A method for decoding a data stream carried by a modulated signal includes receiving the modulated signal. The modulated signal is modulated according to a protocol belonging to a group of protocols including at least three protocols. The method further includes extracting a clock signal from the received modulated signal, detecting the protocol, and decoding the data stream according to the detected protocol using the extracted clock signal.
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7.发明申请公开(公告)号：US20190384951A1
公开(公告)日：2019-12-19
申请号：US16443227
申请日：2019-06-17
Inventor： Maksimiljan Stiglic , Iztok Bratuz , Albin Pevec , Roman Benkovic
Abstract: A method for decoding a data stream carried by a modulated signal includes receiving the modulated signal. The modulated signal is modulated according to a protocol belonging to a group of protocols including at least three protocols. The method further includes extracting a clock signal from the received modulated signal, detecting the protocol, and decoding the data stream according to the detected protocol using the extracted clock signal.
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8.发明申请公开(公告)号：US20190020467A1
公开(公告)日：2019-01-17
申请号：US16029457
申请日：2018-07-06
Inventor： Maksimiljan STIGLIC , Nejc SUHADOLNIK , Marc HOUDEBINE
Abstract: A transponder communicates with a reader using active load modulation. The transponder includes a digital phase locked loop (DPLL), which, in operation, generates an active load modulation (ALM) carrier clock synchronized to carrier clock of the reader. Between transmission of data frames, the DPLL is placed in a lock mode of operation in which a feedback loop of the DPLL is closed. Within a transmitted data frame having a duration, the DPLL is placed, for the duration of the transmitted data frame, in a hold mode of operation in which the feedback loop is opened. A phase of the ALM carrier clock is adjusted at least once during the duration of the transmitted data frame.
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公开(公告)号：US20180358680A1
公开(公告)日：2018-12-13
申请号：US15951774
申请日：2018-04-12
Inventor： Alexandre Tramoni , Nicolas Cordier , Maksimiljan Stiglic
CPC classification number: H01Q1/002 , G01R21/00 , G06K7/10 , H04B5/0025 , H04W52/00
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.
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公开(公告)号：US11934217B2
公开(公告)日：2024-03-19
申请号：US18158170
申请日：2023-01-23
Inventor： Albin Pevec , Nejc Suhadolnik , Vinko Kunc , Maksimiljan Stiglic
IPC: G05F1/575
CPC classification number: G05F1/575
Abstract: In accordance with an embodiment, a linear voltage regulator includes: a first transistor coupled between a first input terminal and an output terminal, the first input terminal adapted to receive a first voltage, and the output terminal adapted to provide a regulated voltage; a second transistor coupled between a second input terminal and the output terminal, the second input terminal adapted to receive a second voltage; and an amplifier of a difference between a third voltage proportional to the voltage at the output terminal and a reference voltage, an output of said amplifier being selectively coupled to a control terminal of the first transistor and to a control terminal of the second transistor, the amplifier being supplied by a fourth voltage corresponding to a highest voltage of the first voltage and the second voltage.
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