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1.发明公开公开(公告)号：US20240266843A1
公开(公告)日：2024-08-08
申请号：US18164935
申请日：2023-02-06
Applicant: NXP B.V.
Inventor： Markus Wobak , Ulrich Neffe
CPC classification number: H02J7/00045 , H02J50/20 , H04W4/80
Abstract: A method for charging a fully depleted battery of a wireless charging (WLC) device is provided. An RF controller and a read-only non-volatile memory of the WLC device is powered with the RF field of a WLC charger device. The RF controller controls charging of the battery by the RF field using a first charging program stored in the read-only non-volatile memory. A microcontroller of the WLC device is booted up after the battery has reached a predetermined voltage level. The microcontroller loads a second more complex dynamic charging program into a volatile random-access memory (RAM) of the WLC device for execution by the RF controller. The RF controller transitions code execution from the first charging program in the read-only non-volatile memory to the second charging program in the RAM. In another embodiment, the WLC device is provided.
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公开(公告)号：US20240146357A1
公开(公告)日：2024-05-02
申请号：US17974247
申请日：2022-10-26
Applicant: NXP B.V.
Inventor： Mark Feichtinger , Johannes Stahl , Ulrich Andreas Muehlmann , Markus Wobak
IPC: H04B5/00
CPC classification number: H04B5/0025
Abstract: A system includes a signal processing unit including an antenna configured to receive a radio frequency signal as a received radio frequency signal, and a baseband amplifier coupled to the antenna. The system includes a processor configured to cause the communication unit to stop generating a radio frequency polling signal, set an amplification gain of the baseband amplifier to a first gain value, periodically record, at a sample rate, an indication of a magnitude of the amplified radio frequency signal to generate a plurality of sample values, at a predetermined time interval after the communication unit stopped generating the radio frequency polling signal, set the amplification gain of the baseband amplifier to a second gain value, and transmit the plurality of sample values to a classifier module to determine whether the radio frequency signal is received from a near-field communication-enabled device.
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公开(公告)号：US20220271798A1
公开(公告)日：2022-08-25
申请号：US17649421
申请日：2022-01-31
Applicant: NXP B.V.
Inventor： Markus Wobak , Tushar Nagrare , Olivier Jérôme Célestin Jamin
Abstract: In accordance with a first aspect of the present disclosure, a near field communication (NFC) device is provided, comprising: an NFC unit configured to charge an external device under charge by transferring power to said device under charge through an NFC channel; a detection unit configured to detect predefined events occurring on the NFC channel when said power is being transferred to the device under charge; a processing unit configured to control the transferring of power to the device under charge in dependence on the events detected by the detection unit. In accordance with a second aspect of the present disclosure, a corresponding method of operating a near field communication (NFC) device is conceived.
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公开(公告)号：US20200229091A1
公开(公告)日：2020-07-16
申请号：US16736426
申请日：2020-01-07
Applicant: NXP B.V.
Inventor： Markus Wobak , Marc Lambert , Ulrich Neffe
Abstract: In accordance with a first aspect of the present disclosure, a control system for a radio frequency (RF) communication device is provided, the system comprising: a communication controller configured to control an RF communication of the RF communication device; a detector configured to detect the presence of an external communication device and to initiate a wake-up of the communication controller in dependence on said presence; wherein the detector is configured to detect said presence by detecting a first load on an RF interface of the RF communication device, said first load resulting from a first transmitted RF pulse; and wherein the detector is configured to initiate said wake-up if a difference between the first load and a reference load is above a high threshold, and to perform a presence verification if the difference between the first load and the reference load is between a low threshold and the high threshold. In accordance with further aspects of the present disclosure, a corresponding method for controlling a radio frequency (RF) communication device is conceived, and a corresponding computer program is provided.
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公开(公告)号：US12250611B2
公开(公告)日：2025-03-11
申请号：US17818162
申请日：2022-08-08
Applicant: NXP B.V.
Inventor： Markus Wobak , Thomas Spiss , Abu Syed Firoz Ismail
IPC: H04W4/024 , G06Q20/32 , H04B17/318 , H04W4/02
Abstract: Described is a method for guiding a user for positioning a first RFID-enabled device relative to a second RFID-enabled device for allowing a robust RFID communication between the two RFID-enabled devices. The method includes placing the first RFID-enabled device to a first position relative to the second RFID-enabled device; receiving, by the first RFID-enabled device, when being located at the first position, a first RFID signal transmitted by the second RFID-enabled device; measuring, by the first RFID-enabled device, a first signal strength of the first RFID signal; placing the first RFID-enabled device to a second position relative to the second RFID-enabled device; receiving, by the first RFID-enabled device, when being located at the second position, a second RFID signal transmitted by the second RFID-enabled device; measuring, by the first RFID-enabled device, a second signal strength of the first RFID signal; determining, based on the first signal strength and on the second signal strength, a movement indication for a movement of the first RFID-enabled device towards a target position, at which there is expected a target RF coupling strength between the two RFID-enabled devices, which is stronger than a first RF coupling strength being associated with the first position and a second RF coupling strength being associated with the second position; and (h) providing the determined movement indication to the user of the first RFID-enabled device. In other embodiments, an RFID communication system and device are provided.
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Patent Agency Ranking
公开(公告)号：US11784681B2
公开(公告)日：2023-10-10
申请号：US17207839
申请日：2021-03-22
Applicant: NXP B.V.
Inventor： Markus Wobak , Ulrich Neffe
CPC classification number: H04B5/0037 , H04B5/0062
Abstract: In accordance with a first aspect of the present disclosure, a communication device is provided, comprising: a first antenna configured to receive and transmit a first set of near field communication (NFC) signals, wherein said first set of NFC signals relates to NFC transactions; a second antenna configured to receive and transmit a second set of NFC signals, wherein said second set of NFC signals relates to wireless charging operations; a controller; a first interface between the controller and the first and second antenna, the first interface comprising an antenna selection unit configured to select the first antenna or the second antenna in response to a selection signal received from said controller; a second interface between the controller and the first antenna; wherein the controller is configured to detect whether an external communication device is within communication range of the first antenna using the second interface. In accordance with a second aspect of the present disclosure, a corresponding method for operating a communication device is conceived.
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公开(公告)号：US20220141772A1
公开(公告)日：2022-05-05
申请号：US17449988
申请日：2021-10-05
Applicant: NXP B.V.
Inventor： Ulrich Andreas Muehlmann , Markus Wobak
Abstract: In accordance with a first aspect of the present disclosure, a radio frequency (RF) communication device is provided, comprising: a communication unit configured to generate an RF field; a detection unit configured to detect a beacon signal transmitted by a further RF communication device when said further RF communication device is within the range of the RF field; a processing unit configured to determine a reception strength of said beacon signal; and a wake-up unit configured to wake up the RF communication device if the difference between the reception strength of the beacon signal and a predefined reference value exceeds a predefined threshold.
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公开(公告)号：US20210150882A1
公开(公告)日：2021-05-20
申请号：US16687491
申请日：2019-11-18
Applicant: NXP B.V.
Inventor： Markus Wobak , Stefan Tretnjak
Abstract: A communication device includes a main controller configured to control an RF communication of the communication device, and an antenna coupled to the main controller and driven by the main controller with modulated carrier signal. The communication device includes a detector coupled to the main controller and configured to detect a presence of an external communication device and to initiate a wake-up of the main controller in response to the detection. The communication device further includes one or more temperature sensors coupled to the detector and configured to detect temperature information of external or nearby circuits of the communication device. The detector is configured not to initiate the wake-up of the main controller if a difference between a first temperature measurement and a second temperature measurement is above a first temperature threshold or below a second temperature threshold.
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公开(公告)号：US20250119329A1
公开(公告)日：2025-04-10
申请号：US18482940
申请日：2023-10-09
Applicant: NXP B.V.
Inventor： Markus Wobak , Erich Merlin
Abstract: A method is provided for detecting a proximity of a radio frequency (RF) field during an ongoing RF activity by a wireless device operating in reader mode. In the method, an input signal is modulated to provide a modulated RF signal comprising a plurality of RF modulation periods. The plurality of RF modulation periods are transmitted by the wireless device operating in the reader mode. An RF detector is enabled to monitor the plurality of modulation periods during the transmitting of the plurality of RF modulation periods. An external RF signal is detected when a characteristic of the plurality of RF modulation periods is different from an expected characteristic. In another embodiment, a wireless device is provided that implements the method.
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公开(公告)号：US11916616B2
公开(公告)日：2024-02-27
申请号：US17649421
申请日：2022-01-31
Applicant: NXP B.V.
Inventor： Markus Wobak , Tushar Nagrare , Olivier Jérôme Célestin Jamin
CPC classification number: H04B5/0037 , H02J50/80 , H04B5/0043
Abstract: In accordance with a first aspect of the present disclosure, a near field communication (NFC) device is provided, comprising: an NFC unit configured to charge an external device under charge by transferring power to said device under charge through an NFC channel; a detection unit configured to detect predefined events occurring on the NFC channel when said power is being transferred to the device under charge; a processing unit configured to control the transferring of power to the device under charge in dependence on the events detected by the detection unit. In accordance with a second aspect of the present disclosure, a corresponding method of operating a near field communication (NFC) device is conceived.
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