公开(公告)号：US09698872B2

公开(公告)日：2017-07-04

申请号：US13920670

申请日：2013-06-18

Applicant: QUALCOMM Incorporated

Inventor： Anssi Kaleva Haverinen ,  Todd Reynolds ,  Angelica Wong ,  Roger Brockenbrough ,  Sang-Min Lee

IPC: H04B5/00

CPC classification number: H04B5/0031 ,  H04B5/0056 ,  H04B5/0081 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/166 ,  Y02D70/22 ,  Y02D70/42

Abstract: A method, an apparatus, and a computer program product for inductive communication are provided in connection with providing mechanisms for detecting a remote NFC device without excessive power consumption. In one example, a communications device is equipped to monitor frequency oscillations associated with a NFC antenna using a calibrated LPO, determine that a number of occurrences of the frequency oscillations from a reference frequency is greater than a frequency deviation threshold, and perform a NFC polling procedure in response to the determination.

公开(公告)号：US09240827B2

公开(公告)日：2016-01-19

申请号：US13956032

申请日：2013-07-31

Applicant: QUALCOMM Incorporated

Inventor： Roger Brockenbrough ,  Sang-Min Lee ,  Angelica Wong

IPC: H04B5/00 ,  G06K7/10

CPC classification number: H04B5/0081 ,  G06K7/10128 ,  H04B5/0031 ,  H04B5/0043

Abstract: A method, an apparatus, and a computer program product for wireless and/or inductive communications are provided in connection with improving remote NFC device detection through use of an oscillator circuit connected to an NFC antenna and matching network. In one example, a communications device is equipped to monitor frequency oscillations generated by an oscillator circuit associated with a transmitter path of a NFC antenna and matching network, determine that a number of occurrences of the frequency oscillations from a reference frequency is greater than a frequency deviation threshold, and perform a NFC polling procedure in response to the determination.

Abstract translation: 结合通过使用连接到NFC天线和匹配网络的振荡器电路来改进远程NFC设备检测来提供用于无线和/或感应通信的方法，设备和计算机程序产品。 在一个示例中，通信设备被配备为监视与NFC天线和匹配网络的发射机路径相关联的振荡器电路产生的频率振荡，确定来自参考频率的频率振荡的出现次数大于频率 偏差阈值，并且响应于该确定执行NFC轮询过程。

公开(公告)号：US20140227970A1

公开(公告)日：2014-08-14

申请号：US13956032

申请日：2013-07-31

Applicant: QUALCOMM Incorporated

Inventor： Roger Brockenbrough ,  Sang-Min Lee ,  Angelica Wong

IPC: H04B5/00

CPC classification number: H04B5/0081 ,  G06K7/10128 ,  H04B5/0031 ,  H04B5/0043

Abstract: A method, an apparatus, and a computer program product for wireless and/or inductive communications are provided in connection with improving remote NFC device detection through use of an oscillator circuit connected to an NFC antenna and matching network. In one example, a communications device is equipped to monitor frequency oscillations generated by an oscillator circuit associated with a transmitter path of a NFC antenna and matching network, determine that a number of occurrences of the frequency oscillations from a reference frequency is greater than a frequency deviation threshold, and perform a NFC polling procedure in response to the determination.

Abstract translation: 结合通过使用连接到NFC天线和匹配网络的振荡器电路来改进远程NFC设备检测来提供用于无线和/或感应通信的方法，设备和计算机程序产品。 在一个示例中，通信设备被配备为监视与NFC天线和匹配网络的发射机路径相关联的振荡器电路产生的频率振荡，确定来自参考频率的频率振荡的出现次数大于频率 偏差阈值，并且响应于该确定执行NFC轮询过程。

公开(公告)号：US20140253357A1

公开(公告)日：2014-09-11

申请号：US13791536

申请日：2013-03-08

Applicant: QUALCOMM INCORPORATED

Inventor： Dongwon Seo ,  Sang-Min Lee

IPC: H03M1/78

CPC classification number: H03M1/785 ,  H03M1/0863 ,  H03M1/687 ,  H03M1/747

Abstract: An N-bit digital-to-analog converter (DAC) includes N input stages each of which generates the same amount of current and includes a pair of similarly sized transistor switches responsive to differential bits. The 2M−1 input stages associated with the M most significant bits of the DAC are connected in parallel and deliver their currents differentially to the DAC's current summing nodes. Each of the remaining (N-M) stages includes a resistive network that supplies a current defined by a binary weight of the stage's bit position within the DAC. The (N-M) stages deliver their currents to the current summing nodes differentially. The DAC further includes an impedance attenuator adapted to maintain the impedance of the current summing nodes and the voltage difference between the current summing nodes within a range defined by a gain of a differential amplifier disposed in the impedance attenuator.

Abstract translation: N位数模转换器（DAC）包括N个输入级，每个输入级产生相同量的电流，并且包括响应于差分位的一对类似尺寸的晶体管开关。 与DAC的M个最高有效位相关联的2M-1个输入级并联连接，并将其电流差分地传递给DAC的当前求和节点。 剩余（N-M）级中的每一个包括电阻网络，其提供由DAC内的级位位置的二进制权重定义的电流。 （N-M）级将它们的电流差分地传递到当前求和节点。 DAC还包括阻抗衰减器，其适于在由设置在阻抗衰减器中的差分放大器的增益限定的范围内保持电流求和节点的阻抗和电流求和节点之间的电压差。

公开(公告)号：US20140370803A1

公开(公告)日：2014-12-18

申请号：US13920670

申请日：2013-06-18

Applicant: QUALCOMM Incorporated

Inventor： Anssi Kaleva Haverinen ,  Todd Reynolds ,  Angelica Wong ,  Roger Brockenbrough ,  Sang-Min Lee

IPC: H04B5/00

CPC classification number: H04B5/0031 ,  H04B5/0056 ,  H04B5/0081 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/166 ,  Y02D70/22 ,  Y02D70/42

Abstract: A method, an apparatus, and a computer program product for inductive communication are provided in connection with providing mechanisms for detecting a remote NFC device without excessive power consumption. In one example, a communications device is equipped to monitor frequency oscillations associated with a NFC antenna using a calibrated LPO, determine that a number of occurrences of the frequency oscillations from a reference frequency is greater than a frequency deviation threshold, and perform a NFC polling procedure in response to the determination.

Abstract translation: 提供用于感应通信的方法，装置和计算机程序产品，用于提供用于在没有过多功率消耗的情况下检测远程NFC设备的机制。 在一个示例中，通信设备被配备为使用校准的LPO来监视与NFC天线相关联的频率振荡，确定来自参考频率的频率振荡的出现次数大于频率偏差阈值，并且执行NFC轮询 程序响应确定。