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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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2.发明授权公开(公告)号：US10749616B2
公开(公告)日：2020-08-18
申请号：US16538490
申请日：2019-08-12
Applicant: STMicroelectronics International N.V.
Inventor： Nicolas Cordier
Abstract: A method for a phase calibration in a frontend circuit of a near field communication (NFC) tag device is disclosed. An active load modulation signal is generated with a preconfigured value of a phase difference with respect to a reference signal of an NFC signal generator device. An amplitude of a test signal present at an antenna of the NFC tag device is measured. The test signal results from overlaying of the reference signal with the active load modulation signal. The following steps are repeated: modifying the value of the phase difference, providing the active load modulation signal with the modified value of the phase difference, measuring an amplitude of the test signal and comparing the measured amplitude with the previously measured amplitude until the measured amplitude fulfills a predefined condition. The value of the phase difference corresponding to the previously measured amplitude is stored.
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3.发明授权公开(公告)号：US10425173B2
公开(公告)日：2019-09-24
申请号：US15988055
申请日：2018-05-24
Applicant: STMicroelectronics International N.V.
Inventor： Nicolas Cordier
Abstract: A method for a phase calibration in a frontend circuit of a near field communication (NFC) tag device is disclosed. An active load modulation signal is generated with a preconfigured value of a phase difference with respect to a reference signal of an NFC signal generator device. An amplitude of a test signal present at an antenna of the NFC tag device is measured. The test signal results from overlaying of the reference signal with the active load modulation signal. The following steps are repeated: modifying the value of the phase difference, providing the active load modulation signal with the modified value of the phase difference, measuring an amplitude of the test signal and comparing the measured amplitude with the previously measured amplitude until the measured amplitude fulfills a predefined condition. The value of the phase difference corresponding to the previously measured amplitude is stored.
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Patent Agency Ranking
4.发明申请公开(公告)号：US20180269997A1
公开(公告)日：2018-09-20
申请号：US15988055
申请日：2018-05-24
Applicant: STMicroelectronics International N.V.
Inventor： Nicolas Cordier
Abstract: A method for a phase calibration in a frontend circuit of a near field communication (NFC) tag device is disclosed. An active load modulation signal is generated with a preconfigured value of a phase difference with respect to a reference signal of an NFC signal generator device. An amplitude of a test signal present at an antenna of the NFC tag device is measured. The test signal results from overlaying of the reference signal with the active load modulation signal. The following steps are repeated: modifying the value of the phase difference, providing the active load modulation signal with the modified value of the phase difference, measuring an amplitude of the test signal and comparing the measured amplitude with the previously measured amplitude until the measured amplitude fulfills a predefined condition. The value of the phase difference corresponding to the previously measured amplitude is stored.
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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
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：US20170163357A1
公开(公告)日：2017-06-08
申请号：US15438156
申请日：2017-02-21
Applicant: STMicroelectronics International N.V
Inventor： Nicolas Cordier
CPC classification number: H04B17/21 , G06K7/0095 , G06K7/10237 , H04B5/0031 , H04B5/0056 , H04B5/0062
Abstract: A method for a phase calibration in a frontend circuit of a near field communication (NFC) tag device is disclosed. An active load modulation signal is generated with a preconfigured value of a phase difference with respect to a reference signal of an NFC signal generator device. An amplitude of a test signal present at an antenna of the NFC tag device is measured. The test signal results from overlaying of the reference signal with the active load modulation signal. The following steps are repeated: modifying the value of the phase difference, providing the active load modulation signal with the modified value of the phase difference, measuring an amplitude of the test signal and comparing the measured amplitude with the previously measured amplitude until the measured amplitude fulfills a predefined condition. The value of the phase difference corresponding to the previously measured amplitude is stored
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7.发明申请公开(公告)号：US20190363807A1
公开(公告)日：2019-11-28
申请号：US16538490
申请日：2019-08-12
Applicant: STMicroelectronics International N.V.
Inventor： Nicolas Cordier
Abstract: A method for a phase calibration in a frontend circuit of a near field communication (NFC) tag device is disclosed. An active load modulation signal is generated with a preconfigured value of a phase difference with respect to a reference signal of an NFC signal generator device. An amplitude of a test signal present at an antenna of the NFC tag device is measured. The test signal results from overlaying of the reference signal with the active load modulation signal. The following steps are repeated: modifying the value of the phase difference, providing the active load modulation signal with the modified value of the phase difference, measuring an amplitude of the test signal and comparing the measured amplitude with the previously measured amplitude until the measured amplitude fulfills a predefined condition. The value of the phase difference corresponding to the previously measured amplitude is stored.
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公开(公告)号：US09985732B2
公开(公告)日：2018-05-29
申请号：US15438156
申请日：2017-02-21
Applicant: STMicroelectronics International N.V
Inventor： Nicolas Cordier
CPC classification number: H04B17/21 , G06K7/0095 , G06K7/10237 , H04B5/0031 , H04B5/0056 , H04B5/0062
Abstract: A method for a phase calibration in a frontend circuit of a near field communication (NFC) tag device is disclosed. An active load modulation signal is generated with a preconfigured value of a phase difference with respect to a reference signal of an NFC signal generator device. An amplitude of a test signal present at an antenna of the NFC tag device is measured. The test signal results from overlaying of the reference signal with the active load modulation signal. The following steps are repeated: modifying the value of the phase difference, providing the active load modulation signal with the modified value of the phase difference, measuring an amplitude of the test signal and comparing the measured amplitude with the previously measured amplitude until the measured amplitude fulfills a predefined condition. The value of the phase difference corresponding to the previously measured amplitude is stored.
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