公开(公告)号：US10790880B2

公开(公告)日：2020-09-29

申请号：US16680925

申请日：2019-11-12

Applicant: NXP B.V.

Inventor： Christian Weidinger ,  Navdeep Kaur ,  Sanjay Kumar

IPC: H04B5/00 ,  H04W4/80 ,  G06K19/073 ,  G06Q20/34

Abstract: A method for operating a first near field communication, NFC, device, wherein the NFC device comprises an NFC interface and a memory, the method comprising: i) receiving a request for a service from a second NFC device at the NFC interface, ii) allocating a first information from a first memory unit of the memory that is configured to take part in providing the service, iii) allocating a second information from a second memory unit that is not configured to take part in providing the service, and transferring the second information from the second memory unit to the first memory unit, hereby iv) transferring at least a part of the first information and/or at least a part of the second information virtually beyond the first memory unit, v) combining the first information and the second information into a message, and vi) providing the message to the second NFC device as a response to the request.

公开(公告)号：US09679173B2

公开(公告)日：2017-06-13

申请号：US14610474

申请日：2015-01-30

Applicant: NXP B.V.

Inventor： Christian Weidinger

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

CPC classification number: G06K7/10366 ,  G06K7/0008 ,  G06K19/0723

Abstract: Certain exemplary aspects of the present disclosure are directed toward an apparatus in which a first circuit communicates with a plurality of different types of RFID transponders using radio frequency signals. A second circuit detects and communicates with the plurality of different types of RFID transponders via the first circuit, respectively using a command set for the type of RFID transponder that the first circuit is communicating with. The second circuit, in response to detecting an RFID transponder having configuration data for a new command set, accesses and uses the configuration data for the new command set to update a configuration of the second circuit to enable communication with the new type of RFID transponder.

公开(公告)号：US20230062060A1

公开(公告)日：2023-03-02

申请号：US17817905

申请日：2022-08-05

Applicant: NXP B.V.

Inventor： Christian Weidinger ,  Heinz Umfahrer

IPC: H04L27/06 ,  H04W4/80

Abstract: There is described an RFID IC, comprising:
i) an RFID interface configured to receive a digitally modulated signal, wherein the digitally modulated signal comprises: a first slot with a first pulse, and a second slot with a second pulse; and ii) a processing unit configured to a) determine a first position of the first pulse in the first slot, b) filter a region that follows the determined first position of the first pulse, c) determine a second position of the second pulse in the second slot, and, if the second position of the second pulse cannot be determined in the second slot, assume that the second position of the second pulse in the second slot is at the filtered region.

公开(公告)号：US11481595B2

公开(公告)日：2022-10-25

申请号：US17247650

申请日：2020-12-18

Applicant: NXP B.V.

Inventor： Thomas Pichler ,  Ivan Jesus Rebollo Pimentel ,  Christian Weidinger ,  Franz Amtmann ,  Werner Zettler ,  Heinz Umfahrer

IPC: G06K19/077 ,  G06K7/10

Abstract: A Radio Frequency Identification (RFID) tag is disclosed. The RFID tag includes an antenna to receive an input AC signal and a tuning system coupled with the antenna to optimize signal strength of the input AC signal. The tuning system includes a charge pump rectifier. A diode rectifier is included and is coupled with the antenna to receive the input AC signal after the tuning system optimizes the signal strength by tuning input impedance of the antenna.

公开(公告)号：US09940489B2

公开(公告)日：2018-04-10

申请号：US14745307

申请日：2015-06-19

Applicant: NXP B.V.

Inventor： Christian Weidinger

IPC: G06K7/10 ,  G06F21/35 ,  H04W12/06 ,  G05B23/00 ,  G06K7/00 ,  G06K19/07

CPC classification number: G06K7/10009 ,  G06K19/0722

Abstract: The invention relates to radiofrequency transponder circuits, and in particular to such transponder circuits having a unique identifier. Embodiments disclosed include a radiofrequency transponder circuit (100) comprising an antenna module (101), a control circuit (103) and a memory (104), the transponder circuit (100) being configured to respond to a read command received via the antenna module (101) by the control circuit (103) reading and transmitting an identifier stored in the memory (104) via the antenna module (101), wherein the control circuit (103) is configured to perform an integrity check on data stored in the memory (104) upon being powered up by a reader field a first time via the antenna module (101) and to not perform the integrity check for a predetermined time period upon being powered up by a reader field subsequent times via the antenna module (101).

公开(公告)号：US20150371066A1

公开(公告)日：2015-12-24

申请号：US14745307

申请日：2015-06-19

Applicant: NXP B.V.

Inventor： Christian Weidinger

IPC: G06K7/10

CPC classification number: G06K7/10009 ,  G06K19/0722

Abstract: The invention relates to radiofrequency transponder circuits, and in particular to such transponder circuits having a unique identifier. Embodiments disclosed include a radiofrequency transponder circuit (100) comprising an antenna module (101), a control circuit (103) and a memory (104), the transponder circuit (100) being configured to respond to a read command received via the antenna module (101) by the control circuit (103) reading and transmitting an identifier stored in the memory (104) via the antenna module (101), wherein the control circuit (103) is configured to perform an integrity check on data stored in the memory (104) upon being powered up by a reader field a first time via the antenna module (101) and to not perform the integrity check for a predetermined time period upon being powered up by a reader field subsequent times via the antenna module (101).

Abstract translation: 本发明涉及射频应答器电路，特别涉及具有唯一标识符的这种应答器电路。 所公开的实施例包括射频应答器电路（100），包括天线模块（101），控制电路（103）和存储器（104），所述应答器电路（100）被配置为响应经由天线模块 （101）通过天线模块（101）读取和发送存储在存储器（104）中的标识符，其中控制电路（103）被配置为对存储在存储器（104）中的数据执行完整性检查 （104），经由天线模块（101）第一次由读取器字段通电时，并且经由天线模块（101）随后经由读取器字段上电后，不执行预定时间段的完整性检查， 。

公开(公告)号：US12141636B2

公开(公告)日：2024-11-12

申请号：US17655113

申请日：2022-03-16

Applicant: NXP B.V.

Inventor： Christian Schwar ,  Christian Weidinger ,  Franz Amtmann ,  Heinz Umfahrer ,  Christoph Hans Joachim Garbe ,  Thomas Pichler

IPC: G06K19/077 ,  G06K7/10 ,  G06Q10/087 ,  H04W4/80

Abstract: There is described an RFID tag IC, comprising: i) an NFC interface configured to initiate a power-up, when coupled with an HF field, and receive a read command from an RFID device; ii) a non-volatile memory, wherein the non-volatile memory is configured to store a counter value; and iii) a processing unit configured to increment the counter value when coupled with the HF field, set an increment flag, when the increment is successful, and thereby block a further increment of the counter value, in particular when fulfilling the read command, and reset the increment flag after fulfilling the read command. Further, a communication system and a method of operating are described.

公开(公告)号：US11888659B2

公开(公告)日：2024-01-30

申请号：US17817905

申请日：2022-08-05

Applicant: NXP B.V.

Inventor： Christian Weidinger ,  Heinz Umfahrer

IPC: H04L27/06 ,  H04W4/80

CPC classification number: H04L27/06 ,  H04W4/80

Abstract: There is described an RFID IC, comprising:
i) an RFID interface configured to receive a digitally modulated signal, wherein the digitally modulated signal comprises: a first slot with a first pulse, and a second slot with a second pulse; and
ii) a processing unit configured to
a) determine a first position of the first pulse in the first slot,
b) filter a region that follows the determined first position of the first pulse,
c) determine a second position of the second pulse in the second slot, and, if the second position of the second pulse cannot be determined in the second slot, assume that the second position of the second pulse in the second slot is at the filtered region.

公开(公告)号：US20220327341A1

公开(公告)日：2022-10-13

申请号：US17655113

申请日：2022-03-16

Applicant: NXP B.V.

Inventor： Christian Schwar ,  Christian Weidinger ,  Franz Amtmann ,  Heinz Umfahrer ,  Christoph Hans Joachim Garbe ,  Thomas Pichler

IPC: G06K19/077 ,  G06K7/10 ,  H04W4/80

Abstract: There is described an RFID tag IC, comprising: i) an NFC interface configured to initiate a power-up, when coupled with an HF field, and receive a read command from an RFID device; ii) a non-volatile memory, wherein the non-volatile memory is configured to store a counter value; and iii) a processing unit configured to increment the counter value when coupled with the HF field, set an increment flag, when the increment is successful, and thereby block a further increment of the counter value, in particular when fulfilling the read command, and reset the increment flag after fulfilling the read command. Further, a communication system and a method of operating are described.

公开(公告)号：US11023797B2

公开(公告)日：2021-06-01

申请号：US16872952

申请日：2020-05-12

Applicant: NXP B.V.

Inventor： Thomas Pichler ,  Christian Weidinger ,  Ivan Jesus Rebollo Pimentel

IPC: G06K19/07

Abstract: In accordance with a first aspect of the present disclosure, a radio frequency identification (RFID) transponder is provided, comprising a modulator and a modulator controller, wherein the modulator is configured to generate a modulated signal to be transmitted to an external RFID reader, and wherein the modulator controller is configured to control a duty cycle of the modulator in dependence on an available amount of power. In accordance with a second aspect of the present disclosure, a method of operating a radio frequency identification (RFID) transponder is conceived, comprising: generating, by a modulator of the RFID transponder, a modulated signal to be transmitted to an external RFID reader; controlling, by a modulator controller of the RFID transponder, a duty cycle of the modulator in dependence on an available amount of power.