公开(公告)号：US11991028B1

公开(公告)日：2024-05-21

申请号：US18059103

申请日：2022-11-28

Applicant: STMicroelectronics International N.V.

Inventor： Iztok Bratuz ,  Vinko Kunc ,  Maksimiljan Stiglic

IPC: H04L25/49

CPC classification number: H04L25/4904

Abstract: Various embodiments of the present disclosure disclose decoding techniques for mitigating data corruption due to duty cycle distortion, jitter, and other distortions to a digital signal. Decoding processes, apparatuses, and systems are provided that utilize a decoding framework for improving the accuracy of output bit streams generated from digital signals. An example process receives data indicative of a digital signal, generates a signal measurement for the digital signal that includes signal length descriptive between a two rising edges of a digital signal or two falling edges of the demodulated digital signal, and generates at least one portion of an output bit stream for the digital signal based at least in part on the signal measurement.

公开(公告)号：US10296822B2

公开(公告)日：2019-05-21

申请号：US15894440

申请日：2018-02-12

Applicant: STMicroelectronics International N.V.

Inventor： Vinko Kunc ,  Anton Stern ,  Kosta Kovacic ,  Albin Pevec ,  Maksimiljan Stiglic

IPC: G06K19/07 ,  G06K19/077

Abstract: An RFID transponder device has antenna terminals for coupling an antenna system to the device. A transmitter and a receiver are coupled to the antenna terminals. The device has at least one damping resistance connected to at least one of the antenna terminals. The at least one damping resistance is connected, depending on a voltage swing at the antenna terminals during a transmission burst period, either together with a serially connected switch in parallel to the antenna terminals that are coupled to the receiver, or together with a parallel connected switch between one of the antenna terminals and a terminal of the transmitter. A damping control is configured to activate the at least one damping resistance during a damping period after the transmission burst period by controlling the respective switch.

公开(公告)号：US10242303B2

公开(公告)日：2019-03-26

申请号：US15473295

申请日：2017-03-29

Applicant: STMicroelectronics International N.V.

Inventor： Vinko Kunc ,  Iztok Bratuz ,  Albin Pevec ,  Kosta Kovacic ,  Maksimiljan Stiglic

IPC: G06K19/07 ,  G06K19/077 ,  H04L7/033

Abstract: In an embodiment, a carrier signal generation circuit can be used for a Radio-frequency identification (RFID) transponder device. A frequency divider circuit has a first input to receive a first frequency signal, a second input to receive a division ratio signal, and an output to provide a carrier signal as a function of the first frequency signal and the division ratio signal. A phase difference circuit has a first input to receive an analog reader device carrier signal, a second input to receive a signal based on the first frequency signal and an output to provide a digital phase difference signal as a function of the reader device carrier signal and the signal based on the first frequency signal. A signal processor has an input coupled to the output of the phase difference circuit.

公开(公告)号：US09949108B2

公开(公告)日：2018-04-17

申请号：US15472907

申请日：2017-03-29

Applicant: STMicroelectronics International N.V.

Inventor： Nicolas Cordier ,  Vinko Kunc ,  Maksimiljan Stiglic

IPC: H04W8/00 ,  H04W40/24 ,  H04W76/02 ,  H04B5/00 ,  H04W48/10 ,  H04W4/00

CPC classification number: H04W8/005 ,  H04B5/0025 ,  H04W4/80 ,  H04W48/10

Abstract: According to an embodiment, a method can be performed by a first active near-field communication (NFC) device. The method includes assuming a field detection mode, generating an advertisement pulse, and checking whether a predefined condition is fulfilled. If the checking determines that the predefined condition is fulfilled, the method includes assuming an active mode and communicating with an adjacent active NFC device, and, if the checking does not determine that the predefined condition is fulfilled, the method includes staying in the field detection mode and generating another advertisement pulse.

公开(公告)号：US09760822B2

公开(公告)日：2017-09-12

申请号：US14761291

申请日：2014-01-14

Applicant: STMicroelectronics International N.V.

Inventor： Vinko Kunc ,  Maksimiljan Stiglic ,  Kosta Kovacic ,  Albin Pevec ,  Anton Stern

IPC: G06K19/07 ,  G06K7/10 ,  H04B5/00

CPC classification number: H04B5/0056 ,  G06K7/10297 ,  G06K19/0701 ,  G06K19/0705 ,  G06K19/0723 ,  G06K19/0726 ,  H04B5/0075 ,  H04B5/0081

Abstract: An actively transmitting tag detects a shift of a phase of an antenna signal (as) with regard to a phase of a transmitted signal (ts) in time intervals with a length of one half-period of a subcarrier, in which time intervals it transmits high-frequency wave packets with their phase being inverted according to a communication protocol at the ends of said half-periods. Generation of said wave packets is controlled by said phase shift in a way that said phase shift retains its absolute value at transitions into subsequent half-periods. Synchronizing the tag's transmission to a received interrogator signal carried out even during tag's transmitting enables the tag to transmit according to protocol ISO 14443 B by inverting a phase at transitions between said half-periods. Said synchronizing is carried out although no time window without a tag transmitting exists within the transmitted data frame.

公开(公告)号：US20170116509A1

公开(公告)日：2017-04-27

申请号：US15397559

申请日：2017-01-03

Applicant: STMicroelectronics International N.V.

Inventor： Vinko Kunc ,  Anton Stern ,  Kosta Kovacic ,  Albin Pevec ,  Maksimiljan Stiglic

IPC: G06K19/077 ,  G06K19/07

CPC classification number: G06K19/07773 ,  G06K19/0715 ,  G06K19/07749 ,  G06K19/0775

Abstract: An RFID transponder device has antenna terminals for coupling an antenna system to the device. A transmitter and a receiver are coupled to the antenna terminals. The device has at least one damping resistance connected to at least one of the antenna terminals. The at least one damping resistance is connected, depending on a voltage swing at the antenna terminals during a transmission burst period, either together with a serially connected switch in parallel to the antenna terminals that are coupled to the receiver, or together with a parallel connected switch between one of the antenna terminals and a terminal of the transmitter. A damping control is configured to activate the at least one damping resistance during a damping period after the transmission burst period by controlling the respective switch.

公开(公告)号：US09576237B2

公开(公告)日：2017-02-21

申请号：US14903584

申请日：2014-06-12

Applicant: STMicroelectronics International N.V.

Inventor： Vinko Kunc ,  Anton Stern ,  Kosta Kovacic ,  Albin Pevec ,  Maksimiljan Stiglic

IPC: G06K19/06 ,  G06K19/077

CPC classification number: G06K19/07773 ,  G06K19/0715 ,  G06K19/07749 ,  G06K19/0775

Abstract: An RFID transponder device has antenna terminals for coupling an antenna system to the device. A transmitter and a receiver are coupled to the antenna terminals. The device has at least one damping resistance connected to at least one of the antenna terminals. The at least one damping resistance is connected, depending on a voltage swing at the antenna terminals during a transmission burst period, either together with a serially connected switch in parallel to the antenna terminals that are coupled to the receiver, or together with a parallel connected switch between one of the antenna terminals and a terminal of the transmitter. A damping control is configured to activate the at least one damping resistance during a damping period after the transmission burst period by controlling the respective switch.

Abstract translation: RFID应答器设备具有用于将天线系统耦合到设备的天线端子。 发射器和接收器耦合到天线端子。 该装置具有连接到至少一个天线端子的至少一个阻尼电阻。 至少一个阻尼电阻根据传输脉冲串期间天线端子处的电压摆幅而连接，或者连接到与接收器耦合的天线端子并联连接的串联开关，或者与并联连接 在天线终端之一和发射机的终端之间切换。 阻尼控制被配置为通过控制相应的开关来在传输脉冲串周期之后的阻尼时段期间激活至少一个阻尼电阻。