公开(公告)号：US09831960B2

公开(公告)日：2017-11-28

申请号：US14562255

申请日：2014-12-05

Applicant: QUALCOMM Incorporated

Inventor： Mohammad Mahdi Ghahramani ,  Mazhareddin Taghivand ,  Rainer Gaethke ,  Niranjan Anand Talwalkar ,  Roger Brockenbrough

IPC: H04B1/10 ,  H04B15/02 ,  H04B5/00 ,  H04W88/06

CPC classification number: H04B15/02 ,  H04B5/0031 ,  H04B5/0075 ,  H04W88/06

Abstract: A method for inductively coupled communication is described. The method includes generating a first signal. The first signal frequency is a first integer multiple of a carrier frequency for inductively coupled communication. The method also includes selecting between a standalone mode and a coexistence mode. The method further includes dividing the first signal to obtain a second signal when in standalone mode. The second signal frequency is a second integer multiple of the carrier frequency. The method additionally includes dividing the first signal to obtain a third signal when in coexistence mode. The third signal frequency is a third integer multiple of the carrier frequency. The method also includes generating an inductively coupled communication signal using at least one of the second signal and the third signal.

公开(公告)号：US20160142113A1

公开(公告)日：2016-05-19

申请号：US14547837

申请日：2014-11-19

Applicant: QUALCOMM Incorporated

Inventor： Rainer Gaethke ,  Mohammad Mahdi Ghahramani

IPC: H04B5/00 ,  H04L27/148 ,  H04W56/00 ,  H04W4/00

CPC classification number: H04B5/0093 ,  H04B5/0031 ,  H04B5/0056 ,  H04B5/0075 ,  H04L27/148 ,  H04W4/80 ,  H04W56/0035

Abstract: A method for inductively coupled communications is described. The method includes generating a retransmitted modulated signal that is stronger than a received signal from a first device. The method also includes generating a suppressed carrier signal from the retransmitted modulated signal for retransmission to the first device. The method further includes filtering a superimposed signal of the suppressed carrier signal on the received signal to attenuate modulation sidebands. The method additionally includes synchronizing to the first device based on the filtered signal.

Abstract translation: 描述了用于电感耦合通信的方法。 该方法包括产生比来自第一设备的接收信号更强的重传调制信号。 该方法还包括从重传的调制信号产生抑制的载波信号以重发到第一设备。 该方法还包括对接收信号上的抑制载波信号的叠加信号进行滤波，以衰减调制边带。 该方法还包括基于滤波信号与第一设备同步。

公开(公告)号：US20140113551A1

公开(公告)日：2014-04-24

申请号：US13657751

申请日：2012-10-22

Applicant: QUALCOMM INCORPORATED

Inventor： Koushik KRISHNAN ,  Rainer Gaethke

IPC: H04B5/02 ,  H04B1/38

CPC classification number: H04W4/80 ,  G06K7/10128 ,  G06K7/10237 ,  H04B5/0031 ,  H04B5/0075 ,  H04B5/02 ,  H04M1/7253 ,  H04M2250/04

Abstract: First and second NFC devices both seek to determine whether the other device is present and available for communication across an NFC channel. The first NFC device modulates a load in its transceiver. The second NFC device transmits a waveform. If the first NFC device detects the waveform while modulating its load, and if the second NFC device detects the load modulation while transmitting the waveform, then the two NFC devices initiate communication in accordance with a communication protocol.

Abstract translation: 第一和第二NFC设备都试图确定其他设备是否存在并且可用于跨越NFC信道的通信。 第一个NFC设备调制其收发器中的负载。 第二个NFC设备发送一个波形。 如果第一NFC设备在调节其负载的同时检测波形，并且如果第二NFC设备在发送波形时检测到负载调制，则两个NFC设备根据通信协议发起通信。