公开(公告)号：US09513609B2

公开(公告)日：2016-12-06

申请号：US13757028

申请日：2013-02-01

Applicant: NXP B.V.

Inventor： Peter Thueringer ,  Klemens Breitfuss

IPC: H04Q5/22 ,  G05B13/02 ,  G06K7/10 ,  G06K19/077 ,  H04B5/00

CPC classification number: G05B13/02 ,  G06K7/10009 ,  G06K19/07749 ,  H04B5/0031 ,  H04B5/0062 ,  H04B5/0081

Abstract: A method of wireless communication, with a circuit that includes a radio frequency identification (RFID) reader, can be carried out using a circuit that is configured and arranged to communicate with RFID cards that use load modulation of an RF carrier provided by the RFID reader. A presence of the radio frequency (RF) carrier is detected on an antenna. A local clock signal is generated. A difference between the local clock signal and the RF carrier is detected. In response to the detected difference, the frequency of the local clock signal is modified to reduce the detected difference. Load modulation of the RF carrier is mimicked by modulating the local clock signal to encode data; and driving the antenna with the modulated local clock signal.

Abstract translation: 使用包括射频识别（RFID）读取器的电路的无线通信的方法可以使用被配置和布置成与使用由RFID读取器提供的RF载体的负载调制的RFID卡进行通信的电路来执行 。 在天线上检测到射频（RF）载波的存在。 产生本地时钟信号。 检测本地时钟信号与RF载波之间的差异。 响应于检测到的差异，本地时钟信号的频率被修改以减小检测到的差异。 通过调制本地时钟信号来对数据进行编码来模拟RF载波的负载调制; 并用调制好的本地时钟信号驱动天线。

公开(公告)号：US20140218176A1

公开(公告)日：2014-08-07

申请号：US13757028

申请日：2013-02-01

Applicant: NXP B.V.

Inventor： Peter Thueringer ,  Klemens Breitfuss

IPC: G05B13/02

CPC classification number: G05B13/02 ,  G06K7/10009 ,  G06K19/07749 ,  H04B5/0031 ,  H04B5/0062 ,  H04B5/0081

Abstract: A method of wireless communication, with a circuit that includes a radio frequency identification (RFID) reader, can be carried out using a circuit that is configured and arranged to communicate with RFID cards that use load modulation of an RF carrier provided by the RFID reader. A presence of the radio frequency (RF) carrier is detected on an antenna. A local clock signal is generated. A difference between the local clock signal and the RF carrier is detected. In response to the detected difference, the frequency of the local clock signal is modified to reduce the detected difference. Load modulation of the RF carrier is mimicked by modulating the local clock signal to encode data; and driving the antenna with the modulated local clock signal.

Abstract translation: 使用包括射频识别（RFID）读取器的电路的无线通信的方法可以使用被配置和布置成与使用由RFID读取器提供的RF载体的负载调制的RFID卡进行通信的电路来执行 。 在天线上检测到射频（RF）载波的存在。 产生本地时钟信号。 检测本地时钟信号与RF载波之间的差异。 响应于检测到的差异，本地时钟信号的频率被修改以减小检测到的差异。 通过调制本地时钟信号来对数据进行编码来模拟RF载波的负载调制; 并用调制好的本地时钟信号驱动天线。

公开(公告)号：US20140145513A1

公开(公告)日：2014-05-29

申请号：US14089746

申请日：2013-11-25

Applicant: NXP B.V.

Inventor： Ajay Kapoor ,  Peter Thueringer

IPC: H01F38/14 ,  G06K19/073

CPC classification number: H01F38/14 ,  G06K19/073 ,  H02J5/005 ,  H02J7/0024 ,  H02J7/025 ,  H02J7/345 ,  H02J50/10 ,  H02J50/80

Abstract: A circuit for delivering power to a load from a wireless power supply comprises an inductor coil for placing in the electromagnetic field of an inductor coil of a supply and a switchable capacitor bank with capacitors switchable at least between a series and a parallel configuration. The voltage across the capacitor bank is used as a feedback control parameter for controlling the capacitor bank switching. A voltage regulator is used to supply the load with a constant voltage power supply derived from the capacitor bank output.

Abstract translation: 用于从无线电源向负载传送电力的电路包括用于放置电源的电感线圈的电磁场的电感线圈和具有至少可以在串联和并联配置之间切换的电容器的可切换电容器组。 电容器组两端的电压用作控制电容器组切换的反馈控制参数。 电压调节器用于向负载提供源自电容器组输出的恒压电源。

公开(公告)号：US20140055246A1

公开(公告)日：2014-02-27

申请号：US14072726

申请日：2013-11-05

Applicant: NXP B.V.

Inventor： Klemens Breitfuss ,  Peter Thueringer

IPC: G06K7/10

CPC classification number: G06K7/10029 ,  G06K7/0008 ,  G06K7/10059

Abstract: Data carriers for inventorying by means of a communication station, whereby the communication station and each data carrier are brought into communicative connection, and each data carrier brought into communicative connection with the communication station is configured to generate a response signal that renders possible an inventorying of the data carrier and is capable of delivering a generated response signal with the use of a transmission start moment that can be selected from a plurality of transmission start moments, each data carrier tests whether another data carrier is already giving its response signal. Each data carrier is configured to discontinue the generation or delivery of its response signal if another data carrier is already providing its response signal.

Abstract translation: 用于通过通信站进行库存的数据载体，由此使通信站和每个数据载体进行通信连接，并且与通信站进行通信连接的每个数据载体被配置为产生响应信号，其使得可能的库存 数据载体并且能够通过使用可以从多个传输开始时刻中选择的传输开始时刻来传递所生成的响应信号，每个数据载体测试另一个数据载体是否已经提供其响应信号。 如果另一数据载体已经提供其响应信号，则每个数据载体被配置为中止其响应信号的产生或传递。