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公开(公告)号：US20160164617A1
公开(公告)日：2016-06-09
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
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.
Abstract translation: 描述了一种用于电感耦合通信的方法。 该方法包括产生第一信号。 第一信号频率是用于电感耦合通信的载波频率的第一整数倍。 该方法还包括在独立模式和共存模式之间进行选择。 该方法还包括在独立模式下划分第一信号以获得第二信号。 第二信号频率是载波频率的第二整数倍。 该方法还包括在共存模式下划分第一信号以获得第三信号。 第三信号频率是载波频率的第三整数倍。 该方法还包括使用第二信号和第三信号中的至少一个产生电感耦合的通信信号。
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2.发明申请公开(公告)号：US20140106669A1
公开(公告)日：2014-04-17
申请号：US13650031
申请日：2012-10-11
Applicant: QUALCOMM INCORPORATED
Inventor： Koushik KRISHNAN , Rainer Gaethke , Faramarz Sabouri
IPC: H04B5/00
CPC classification number: H04B5/00 , H04B5/0056 , H04B17/11
Abstract: A near-field communications (NFC) device includes an NFC antenna, a matching network coupled to the NFC antenna, and a transmitter coupled to the matching network. The transmitter applies a signal to the matching network and varies a frequency of the signal. A parameter is measured while varying the frequency of the signal. A peak value of the parameter is identified and compared to a threshold. A communication protocol is initiated in response to a determination that the peak value satisfies the threshold.
Abstract translation: 近场通信（NFC）设备包括NFC天线，耦合到NFC天线的匹配网络和耦合到匹配网络的发射机。 发射机向匹配网络施加信号并改变信号的频率。 在改变信号的频率的同时测量参数。 识别参数的峰值并将其与阈值进行比较。 响应于峰值满足阈值的确定来启动通信协议。
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公开(公告)号：US08902965B2
公开(公告)日：2014-12-02
申请号：US13800065
申请日：2013-03-13
Applicant: QUALCOMM Incorporated
Inventor： Koorosh Akhavan , Rainer Gaethke , Faramarz Sabouri
CPC classification number: H04L1/0033 , H03F3/217 , H04B5/00 , H04B5/0031 , H04L25/03828 , H04L25/03853
Abstract: The present systems and methods may shape signals to meet emission mask requirements, current consumption requirements, and overshoot/undershoot requirements relating to the interaction that, for example, occurs when a near field communications (NFC) target comes within range of an NFC initiator, and the initiator generates and transmits an NFC waveform. In some implementations, a pair of bit patterns are defined whose differential output from an amplifier is a shaped pulse width modulated waveform. Varying individual bits of the bit patterns can vary the shaped pulse waveform with predictability. The pulse width modulated waveform may be filtered using a matching network that reduces higher order harmonics, thereby reducing out-of-band emissions.
Abstract translation: 本系统和方法可以形成信号以满足发射掩模要求，电流消耗要求以及与例如当近场通信（NFC）目标在NFC发起者的范围内发生时的相互作用相关的过冲/下冲要求， 并且发起者生成并发送NFC波形。 在一些实现中，定义了一对位模式，其中来自放大器的差分输出是成形的脉冲宽度调制波形。 位模式的各个位的变化可以改变具有可预测性的形状脉冲波形。 可以使用减少更高阶谐波的匹配网络对脉宽调制波形进行滤波，从而减少带外发射。
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公开(公告)号：US20160302159A1
公开(公告)日：2016-10-13
申请号：US14684003
申请日：2015-04-10
Applicant: QUALCOMM Incorporated
Inventor： Angelica Wong , Haitao Gan , Rainer Gaethke , Niranjan Anand Talwalkar
CPC classification number: H04W52/246 , H04B5/0012 , H04B5/0075 , H04W52/245
Abstract: A method for inductively coupled communication is described. The method includes transmitting a carrier signal from a first device while receiving the carrier signal at a receiver of the first device. The method also includes determining a carrier level estimation using a loopback path on the receiver of the first device. The method further includes controlling a transmit power level of the first device based on a coupling strength with a second device as indicated by the carrier level estimation.
Abstract translation: 描述了一种用于电感耦合通信的方法。 该方法包括在第一设备的接收机处接收载波信号的同时从第一设备发送载波信号。 该方法还包括使用第一设备的接收机上的环回路径确定载波电平估计。 该方法还包括基于与载波电平估计所指示的第二设备的耦合强度来控制第一设备的发射功率电平。
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公开(公告)号：US09071926B2
公开(公告)日：2015-06-30
申请号：US13657751
申请日：2012-10-22
Applicant: Qualcomm Incorporated
Inventor： Koushik Krishnan , Rainer Gaethke
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。
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Patent Agency Ranking
公开(公告)号：US08977197B2
公开(公告)日：2015-03-10
申请号：US13649801
申请日：2012-10-11
Applicant: QUALCOMM Incorporated
Inventor： Koushik Krishnan , Rainer Gaethke , Faramarz Sabouri
CPC classification number: G06K7/0008 , G06K7/10128 , H04B5/0031 , H04B5/0075 , H04B17/12
Abstract: A near-field communications (NFC) device includes an NFC antenna, a matching network coupled to the NFC antenna, and a transmitter coupled to the matching network. The transmitter applies a signal to the matching network and a capacitance of the matching network is varied. A parameter is measured while varying the capacitance of the matching network and while applying the signal. A peak value of the parameter is identified and compared to a threshold. A communication protocol is initiated in response to a determination that the peak value satisfies the threshold.
Abstract translation: 近场通信（NFC）设备包括NFC天线，耦合到NFC天线的匹配网络和耦合到匹配网络的发射机。 发射机向匹配网络施加信号，匹配网络的电容变化。 在改变匹配网络的电容和应用信号的同时测量参数。 识别参数的峰值并将其与阈值进行比较。 响应于峰值满足阈值的确定来启动通信协议。
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公开(公告)号：US09756578B2
公开(公告)日：2017-09-05
申请号：US14684003
申请日：2015-04-10
Applicant: QUALCOMM Incorporated
Inventor： Angelica Wong , Haitao Gan , Rainer Gaethke , Niranjan Anand Talwalkar
CPC classification number: H04W52/246 , H04B5/0012 , H04B5/0075 , H04W52/245
Abstract: A method for inductively coupled communication is described. The method includes transmitting a carrier signal from a first device while receiving the carrier signal at a receiver of the first device. The method also includes determining a carrier level estimation using a loopback path on the receiver of the first device. The method further includes controlling a transmit power level of the first device based on a coupling strength with a second device as indicated by the carrier level estimation.
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公开(公告)号：US09577718B2
公开(公告)日：2017-02-21
申请号：US14547837
申请日：2014-11-19
Applicant: QUALCOMM Incorporated
Inventor： Rainer Gaethke , Mohammad Mahdi Ghahramani
IPC: H04B5/00 , H04W4/00 , H04L27/148 , H04W56/00
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。
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9.发明授权公开(公告)号：US09124302B2
公开(公告)日：2015-09-01
申请号：US13650031
申请日：2012-10-11
Applicant: Qualcomm Incorporated
Inventor： Koushik Krishnan , Rainer Gaethke , Faramarz Sabouri
CPC classification number: H04B5/00 , H04B5/0056 , H04B17/11
Abstract: A near-field communications (NFC) device includes an NFC antenna, a matching network coupled to the NFC antenna, and a transmitter coupled to the matching network. The transmitter applies a signal to the matching network and varies a frequency of the signal. A parameter is measured while varying the frequency of the signal. A peak value of the parameter is identified and compared to a threshold. A communication protocol is initiated in response to a determination that the peak value satisfies the threshold.
Abstract translation: 近场通信（NFC）设备包括NFC天线，耦合到NFC天线的匹配网络和耦合到匹配网络的发射机。 发射机向匹配网络施加信号并改变信号的频率。 在改变信号的频率的同时测量参数。 识别参数的峰值并将其与阈值进行比较。 响应于峰值满足阈值的确定来启动通信协议。
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公开(公告)号：US20140086301A1
公开(公告)日：2014-03-27
申请号：US13800065
申请日：2013-03-13
Applicant: QUALCOMM INCORPORATED
Inventor： Koorosh Akhavan , Rainer Gaethke , Faramarz Sabouri
CPC classification number: H04L1/0033 , H03F3/217 , H04B5/00 , H04B5/0031 , H04L25/03828 , H04L25/03853
Abstract: Systems and methods are disclosed that can shape signals to meet emission mask requirements, current consumption requirements, and overshoot/undershoot requirements relating to the interaction that, for example, occurs when a near field communications (NFC) target comes within range of an NFC initiator, and the initiator generates and transmits an NFC waveform. In some implementations, a pair of bit patterns are defined whose differential output from an amplifier is a shaped pulse width modulated waveform. Varying individual bits of the bit patterns can vary the shaped pulse waveform with predictability. The pulse width modulated waveform may be filtered using a matching network that reduces higher order harmonics, thereby reducing out-of-band emissions.
Abstract translation: 公开了可以形成信号以满足发射掩模要求，电流消耗要求以及与例如当近场通信（NFC）目标在NFC启动器的范围内发生时的相互作用的过冲/下冲要求的信号的系统和方法） 并且发起者生成并发送NFC波形。 在一些实现中，定义了一对位模式，其中来自放大器的差分输出是成形的脉冲宽度调制波形。 位模式的各个位的变化可以改变具有可预测性的形状脉冲波形。 可以使用减少更高阶谐波的匹配网络对脉宽调制波形进行滤波，从而减少带外发射。
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