公开(公告)号：US20150181621A1

公开(公告)日：2015-06-25

申请号：US14641520

申请日：2015-03-09

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Koby Levy ,  Ran Katz ,  Tally Mane ,  Rachel Stahl

IPC: H04W74/06 ,  H04W76/04 ,  H04B5/00

CPC classification number: H04W74/06 ,  G06K7/10237 ,  H04B5/0031 ,  H04W76/25

Abstract: A contactless system is described in which multiple execution environments may be coupled to a near field communication (NFC) controller, wherein each execution environment is configured to communicate with remote readers via the NFC controller using an assigned one of a plurality of communication protocols. During a polling session from a proximate reader, responding to a request command using a requested communication protocol and activating one of the plurality of execution environments assigned to the requested communication protocol to use the NFC controller. An arbitration is performed in response to each polling session such that a same combination of communication protocol and execution environment is not activated for adjacent polling sessions.

Abstract translation: 描述了一种非接触式系统，其中多个执行环境可以耦合到近场通信（NFC）控制器，其中每个执行环境被配置为经由NFC控制器使用多个通信协议中的一个通信协议与远程读取器进行通信。 在来自邻近读取器的轮询会话期间，使用所请求的通信协议来响应请求命令，并激活分配给所请求的通信协议的多个执行环境中的一个以使用NFC控制器。 响应于每个轮询会话执行仲裁，使得相同轮询会话不激活通信协议和执行环境的相同组合。

公开(公告)号：US09439220B2

公开(公告)日：2016-09-06

申请号：US14641520

申请日：2015-03-09

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Koby Levy ,  Ran Katz ,  Tally Mane ,  Rachel Stahl

IPC: H04W74/06 ,  G06K7/10 ,  H04B5/00 ,  H04W76/04

CPC classification number: H04W74/06 ,  G06K7/10237 ,  H04B5/0031 ,  H04W76/25

Abstract: A contactless system is described in which multiple execution environments may be coupled to a near field communication (NFC) controller, wherein each execution environment is configured to communicate with remote readers via the NFC controller using an assigned one of a plurality of communication protocols. During a polling session from a proximate reader, responding to a request command using a requested communication protocol and activating one of the plurality of execution environments assigned to the requested communication protocol to use the NFC controller. An arbitration is performed in response to each polling session such that a same combination of communication protocol and execution environment is not activated for adjacent polling sessions.

公开(公告)号：US20150091385A1

公开(公告)日：2015-04-02

申请号：US14040275

申请日：2013-09-27

Applicant: Texas Instruments Incorporated

Inventor： Srikanth Manian ,  Yogesh Darwhekar ,  Abhishek Agarwal ,  Koby Levy ,  Yaniv Tzoreff ,  Erez Shalom

IPC: H02J5/00 ,  H04B5/00

CPC classification number: H04B5/0037

Abstract: A method of charging a power harvested supply in an electronic communication device, which can be an NFC (near field communication) device. The power harvested supply in the electronic communication device is charged without causing dV/V violation and avoids false wake up. An RF (radio frequency) field is received at the antenna of the electronic communication device. A differential voltage is generated from the RF field at a first tag pin and a second tag pin of the electronic communication device. A bandgap reference voltage and a reference current are generated in response to the differential voltage. A shunt current is generated in response to the differential voltage and the bandgap reference voltage. A bank of switching devices is activated if the shunt current is more than the reference current.

Abstract translation: 一种在可以是NFC（近场通信）设备的电子通信设备中对功率采集的电源进行充电的方法。 在电子通信设备中收取的电力被充电而不引起dV / V违规，并避免虚假唤醒。 在电子通信设备的天线处接收RF（射频）字段。 在电子通信设备的第一标签引脚和第二标签引脚处的RF场产生差分电压。 响应于差分电压产生带隙参考电压和参考电流。 响应于差分电压和带隙基准电压产生并联电流。 如果分流电流大于参考电流，则一组开关器件被激活。

公开(公告)号：US09762292B2

公开(公告)日：2017-09-12

申请号：US14040275

申请日：2013-09-27

Applicant: Texas Instruments Incorporated

Inventor： Srikanth Manian ,  Yogesh Darwhekar ,  Abhishek Agrawal ,  Koby Levy ,  Yaniv Tzoreff ,  Erez Shalom

IPC: H04B5/00

CPC classification number: H04B5/0037

Abstract: A method of charging a power harvested supply in an electronic communication device, which can be an NFC (near field communication) device. The power harvested supply in the electronic communication device is charged without causing dV/V violation and avoids false wake up. An RF (radio frequency) field is received at the antenna of the electronic communication device. A differential voltage is generated from the RF field at a first tag pin and a second tag pin of the electronic communication device. A bandgap reference voltage and a reference current are generated in response to the differential voltage. A shunt current is generated in response to the differential voltage and the bandgap reference voltage. A bank of switching devices is activated if the shunt current is more than the reference current.