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公开(公告)号：US10128913B2
公开(公告)日：2018-11-13
申请号：US15669380
申请日：2017-08-04
Applicant: STMicroelectronics International N.V.
Inventor： Vinko Kunc , Maksimiljan Stiglic , Kosta Kovacic , Albin Pevec , Anton Stern
Abstract: A circuit of an actively transmitting tag includes an antenna, a digitizer, a voltage-controlled oscillator (VCO), an output amplifier, a phase-displacement detector, and a regulator. The input of the digitizer connects to the antenna. The outputs of the digitizer and the output amplifier are connected to the input terminals of the phase-displacement detector. The output amplifier connects the output of the VCO to the antenna and the regulator connects the output of the phase-displacement detector to the VCO.
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公开(公告)号：US10049237B2
公开(公告)日：2018-08-14
申请号：US15473074
申请日：2017-03-29
Applicant: STMicroelectronics International N.V
Inventor： Kosta Kovacic , Albin Pevec , Maksimiljan Stiglic
Abstract: Embodiments provide a method for sending a message from an RFID transponder to a reader during a transmission frame using active load modulation, the method comprising. An encoded bit signal has a first logic level during first time segments within the transmission frame and a second logic level during second time segments within the transmission frame. The first time segments include an initial time segment of the transmission frame. A transmission signal is generated based on the encoded bit signal. The transmission signal is generated having a first phase depending on the first logic level during the first time segments, a second phase depending on the second logic level during the second time segments, and the second phase during a time interval preceding the transmission frame.
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公开(公告)号：US10608705B2
公开(公告)日：2020-03-31
申请号：US16435815
申请日：2019-06-10
Applicant: STMicroelectronics International N.V.
Inventor： Kosta Kovacic , Albin Pevec , Maksimiljan Stiglic
IPC: H04B5/00 , G06K19/077 , G06K19/07 , G06K7/00
Abstract: An RFID transponder includes a coding and modulation unit that generates a transmission signal by modulating an oscillator signal with an encoded bit signal. During a first and a second time segment, the encoded bit signal assumes a first and a second logic level, respectively. The transmission signal includes a first signal pulse having a first phase within the first time segment and a second signal pulse having a second phase that is shifted with respect to the first phase by a predefined phase difference within the second time segment. The transmission signal is paused for a pause period between the first and the second signal pulse. The pause period is shorter than a mean value of a period of the first time segment and a period of the second time segment.
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公开(公告)号：US20180227019A1
公开(公告)日：2018-08-09
申请号：US15742962
申请日：2016-07-15
Applicant: STMicroelectronics International N.V.
Inventor： Kosta Kovacic , Albin Pevec , Maksimiljan Stiglic
IPC: H04B5/00 , G06K19/07 , G06K19/077 , G06K7/00
CPC classification number: H04B5/0068 , G06K7/0008 , G06K19/0715 , G06K19/0723 , G06K19/07749
Abstract: An RFID transponder includes a coding and modulation unit that generates a transmission signal by modulating an oscillator signal with an encoded bit signal. During a first and a second time segment, the encoded bit signal assumes a first and a second logic level, respectively. The transmission signal includes a first signal pulse having a first phase within the first time segment and a second signal pulse having a second phase that is shifted with respect to the first phase by a predefined phase difference within the second time segment. The transmission signal is paused for a pause period between the first and the second signal pulse. The pause period is shorter than a mean value of a period of the first time segment and a period of the second time segment.
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公开(公告)号：US20180165569A1
公开(公告)日：2018-06-14
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: G06K19/077 , 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.
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Patent Agency Ranking
公开(公告)号：US09928458B2
公开(公告)日：2018-03-27
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: G06K19/06 , 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.
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公开(公告)号：US20180020338A1
公开(公告)日：2018-01-18
申请号：US15472907
申请日：2017-03-29
Applicant: STMicroelectronics International N.V.
Inventor： Nicolas Cordier , Vinko Kunc , Maksimiljan Stiglic
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.
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公开(公告)号：US10198680B2
公开(公告)日：2019-02-05
申请号：US15913003
申请日：2018-03-06
Applicant: STMicroelectronics International N.V.
Inventor： Vinko Kunc , Maksimiljan Stiglic , Kosta Kovacic
Abstract: A circuit includes an antenna circuit including a number of capacitors and an inductor. The antenna circuit is configured to transmit an output signal upon receiving an input transmit signal. A first control block is configured to transmit an enabling signal upon detecting a presence of a supply voltage at a feeding terminal of the actively transmitting tag in response to the actively transmitting tag being inserted into a host device. A VCO is configured to generate the input transmit signal with the frequency of the interrogator carrier signal upon receiving the enabling signal from the first control block and upon receiving the control voltage from the memory. A second control block is configured to enable a subset of the plurality of capacitors of the antenna circuit upon receiving the enabling signal from the first control block.
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公开(公告)号：US20180197059A1
公开(公告)日：2018-07-12
申请号：US15913003
申请日：2018-03-06
Applicant: STMicroelectronics International N.V
Inventor： Vinko Kunc , Maksimiljan Stiglic , Kosta Kovacic
CPC classification number: G06K19/0726 , H01Q1/2208
Abstract: A circuit includes an antenna circuit including a number of capacitors and an inductor. The antenna circuit is configured to transmit an output signal upon receiving an input transmit signal. A first control block is configured to transmit an enabling signal upon detecting a presence of a supply voltage at a feeding terminal of the actively transmitting tag in response to the actively transmitting tag being inserted into a host device. A VCO is configured to generate the input transmit signal with the frequency of the interrogator carrier signal upon receiving the enabling signal from the first control block and upon receiving the control voltage from the memory. A second control block is configured to enable a subset of the plurality of capacitors of the antenna circuit upon receiving the enabling signal from the first control block.
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公开(公告)号：US20170338862A1
公开(公告)日：2017-11-23
申请号：US15669380
申请日：2017-08-04
Applicant: STMicroelectronics International N.V.
Inventor： Vinko Kunc , Maksimiljan Stiglic , Kosta Kovacic , Albin Pevec , Anton Stern
CPC classification number: H04B5/0056 , G06K7/10297 , G06K19/0701 , G06K19/0705 , G06K19/0723 , G06K19/0726 , H04B5/0075 , H04B5/0081
Abstract: A circuit of an actively transmitting tag includes an antenna, a digitizer, a voltage-controlled oscillator (VCO), an output amplifier, a phase-displacement detector, and a regulator. The input of the digitizer connects to the antenna. The outputs of the digitizer and the output amplifier are connected to the input terminals of the phase-displacement detector. The output amplifier connects the output of the VCO to the antenna and the regulator connects the output of the phase-displacement detector to the VCO.
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