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公开(公告)号：US09143150B1
公开(公告)日：2015-09-22
申请号：US14467947
申请日：2014-08-25
Applicant: NXP B.V.
Inventor： Frank Leong , Andries Hekstra , Arie Koppelaar , Stefan Drude
CPC classification number: H03M1/1255 , H03M1/00 , H03M1/12 , H03M1/365
Abstract: Aspects of the preset disclosure are directed to processing an analog signal transmitted during active portions of a duty cycle. As may be implemented in accordance with one or more embodiments, an apparatus includes a high-speed sampling circuit that samples portions of such an analog signal at a first rate corresponding to the active portion of the duty cycle, and stores the sampled portions of the analog signal. A low-speed analog-to-digital converter accesses the stored sampled portions and converts the sampled portions to a digital form at a second rate that is slower than the first rate.
Abstract translation: 预设公开的方面旨在处理在占空比的有效部分期间发送的模拟信号。 如可以根据一个或多个实施例实现的，装置包括高速采样电路，其以对应于占空比的有效部分的第一速率对这样的模拟信号的部分进行采样，并存储采样部分 模拟信号。 低速模数转换器访问存储的采样部分，并以比第一速率慢的第二速率将采样部分转换成数字形式。
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公开(公告)号：US10237056B2
公开(公告)日：2019-03-19
申请号：US14683367
申请日：2015-04-10
Applicant: NXP B.V.
Inventor： Andries Hekstra , Stefan Drude , Frank Leong , Arie Koppelaar
IPC: H04K1/00 , H04B1/692 , H04B1/7163 , H04B10/116 , H04L9/00 , H04L29/06
Abstract: Various exemplary embodiments relate to a method of communicating by a transmitter. Embodiments of the method may include creating information to be used by a receiver to define a spreading sequence for a subsequent packet, coding the information into a current communications packet, and transmitting the current communications packet.
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公开(公告)号：US20160344435A1
公开(公告)日：2016-11-24
申请号：US15139457
申请日：2016-04-27
Applicant: NXP B.V.
Inventor： Andries Hekstra , Alessio Filippi , Semih Serbetli , Arie Koppelaar
CPC classification number: H04B1/16 , H04L1/0052 , H04L1/0061 , H04L1/0071 , H04L25/0202 , H04L25/067
Abstract: According to the present disclosure, there is provided methods of processing a signal using quantized symbols. More particularly, in one example, the method comprises the steps of processing a signal (206), said method comprising the steps of: receiving a signal (206) comprising a plurality of raw symbols, each raw symbol having a plurality of bits and being conveyed in a channel; estimating a channel state information value (206) of the channel used to convey each raw symbol to generate a corresponding plurality of channel state information values; quantizing the plurality of raw symbols based on their channel state information values to generate a sequence of quantized symbols (214); and quantizing the channel state information values to generate a sequence of quantized channel state values (216).
Abstract translation: 根据本公开，提供了使用量化符号处理信号的方法。 更具体地，在一个示例中，该方法包括处理信号（206）的步骤，所述方法包括以下步骤：接收包括多个原始符号的信号（206），每个原始符号具有多个位，并且是 在渠道中传达; 估计用于传送每个原始符号以生成相应的多个信道状态信息值的信道的信道状态信息值（206）; 基于其信道状态信息值对多个原始符号进行量化以产生量化符号序列（214）; 以及量化所述信道状态信息值以产生量化信道状态值的序列（216）。
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公开(公告)号：US09485609B2
公开(公告)日：2016-11-01
申请号：US14615696
申请日：2015-02-06
Applicant: NXP B.V.
Inventor： Andries Hekstra , Arie Koppelaar , Stefan Drude , Frank Leong
IPC: H04W4/00 , B60R25/24 , H04L9/32 , G07C9/00 , H04W12/08 , G01S13/82 , H04W12/06 , H04L7/027 , H04L9/00
CPC classification number: H04W4/80 , B60R25/246 , G01S13/751 , G01S13/76 , G01S13/82 , G07C9/00309 , G07C2009/00317 , H04L7/027 , H04L9/005 , H04L9/32 , H04L9/3271 , H04L2209/80 , H04L2209/84 , H04W12/06 , H04W12/08
Abstract: Using a clock circuit, a clock signal is generated at a base frequency. A frequency adjustment circuit selects, based upon a frequency offset value, a particular frequency adjustment value from a plurality of frequency adjustment values. An adjusted clock signal is provided that has a frequency corresponding to the base frequency as modified by the particular frequency adjustment value. Wireless communication signals are received at a wireless communication circuit. From the communication signals, a set of received wireless communication pulses are identified that have a pulse repetition frequency that corresponds to the adjusted clock signal. A distance ranging protocol is applied, using a processing circuit, to the identified set of received communication pulses.
Abstract translation: 使用时钟电路，以基频产生时钟信号。 频率调整电路基于频率偏移值，从多个频率调整值中选择特定的频率调整值。 提供经调整的时钟信号，其具有对应于由特定频率调整值修改的基本频率的频率。 在无线通信电路处接收无线通信信号。 从通信信号中，识别出具有对应于调整后的时钟信号的脉冲重复频率的一组接收到的无线通信脉冲。 使用处理电路将距离测距协议应用于所识别的一组接收到的通信脉冲。
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公开(公告)号：US20160234684A1
公开(公告)日：2016-08-11
申请号：US14615738
申请日：2015-02-06
Applicant: NXP B.V.
Inventor： Andries Hekstra , Arie Koppelaar , Stefan Drude , Frank Leong
Abstract: Distance-based authentication is provided for mitigating undesirable interaction and/or attacks upon ranging systems, such as those involving vehicle entry or secure payment. As may be implemented in accordance with one or more embodiments, a leading edge of one or more pulses in a waveform of a signal is obscured as part of distance-based authentication. For instance, noise may be generated via a noise modulation circuit and combined with some or all of a leading edge of a pulse. Distance-based authentication is provided by transmitting a signal with a waveform having the obscured portion of the leading edge, which operates to mitigate detection of the polarity of the leading edge or otherwise of the leading edge itself.
Abstract translation: 提供了基于距离的身份验证，以减轻对测距系统（例如涉及车辆进入或安全支付）的不期望的交互和/或攻击。 如可以根据一个或多个实施例来实现的，作为基于距离的认证的一部分，信号波形中的一个或多个脉冲的前沿被遮蔽。 例如，可以通过噪声调制电路产生噪声，并与脉冲的前沿中的一些或全部组合。 通过发送具有前沿的遮蔽部分的波形的信号来提供基于距离的认证，其操作以减轻前缘本身的前沿或其他方面的极性的检测。
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Patent Agency Ranking
公开(公告)号：US20160234008A1
公开(公告)日：2016-08-11
申请号：US14615696
申请日：2015-02-06
Applicant: NXP B.V.
Inventor： Andries Hekstra , Arie Koppelaar , Stefan Drude , Frank Leong
CPC classification number: H04W4/80 , B60R25/246 , G01S13/751 , G01S13/76 , G01S13/82 , G07C9/00309 , G07C2009/00317 , H04L7/027 , H04L9/005 , H04L9/32 , H04L9/3271 , H04L2209/80 , H04L2209/84 , H04W12/06 , H04W12/08
Abstract: Using a clock circuit, a clock signal is generated at a base frequency. A frequency adjustment circuit selects, based upon a frequency offset value, a particular frequency adjustment value from a plurality of frequency adjustment values. An adjusted clock signal is provided that has a frequency corresponding to the base frequency as modified by the particular frequency adjustment value. Wireless communication signals are received at a wireless communication circuit. From the communication signals, a set of received wireless communication pulses are identified that have a pulse repetition frequency that corresponds to the adjusted clock signal. A distance ranging protocol is applied, using a processing circuit, to the identified set of received communication pulses.
Abstract translation: 使用时钟电路，以基频产生时钟信号。 频率调整电路基于频率偏移值，从多个频率调整值中选择特定的频率调整值。 提供经调整的时钟信号，其具有对应于由特定频率调整值修改的基本频率的频率。 在无线通信电路处接收无线通信信号。 从通信信号中，识别出具有对应于调整后的时钟信号的脉冲重复频率的一组接收到的无线通信脉冲。 使用处理电路将距离测距协议应用于所识别的一组接收到的通信脉冲。
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公开(公告)号：US09775034B2
公开(公告)日：2017-09-26
申请号：US14615738
申请日：2015-02-06
Applicant: NXP B.V.
Inventor： Andries Hekstra , Arie Koppelaar , Stefan Drude , Frank Leong
Abstract: Distance-based authentication is provided for mitigating undesirable interaction and/or attacks upon ranging systems, such as those involving vehicle entry or secure payment. As may be implemented in accordance with one or more embodiments, a leading edge of one or more pulses in a waveform of a signal is obscured as part of distance-based authentication. For instance, noise may be generated via a noise modulation circuit and combined with some or all of a leading edge of a pulse. Distance-based authentication is provided by transmitting a signal with a waveform having the obscured portion of the leading edge, which operates to mitigate detection of the polarity of the leading edge or otherwise of the leading edge itself.
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公开(公告)号：US09374215B2
公开(公告)日：2016-06-21
申请号：US14468317
申请日：2014-08-25
Applicant: NXP B.V.
Inventor： Frank Leong , Andries Hekstra , Arie Koppelaar , Stefan Drude
IPC: H04L7/00 , H04L12/26 , G06K7/10 , G06K19/077 , H04B5/00 , H04J3/06 , H04W4/00 , H04W56/00 , H04W4/02
CPC classification number: H04L7/0037 , G06K7/10237 , G06K19/07766 , H04B5/00 , H04J3/0682 , H04L7/0012 , H04L43/0864 , H04W4/023 , H04W4/80 , H04W56/00
Abstract: Aspects of the present disclosure provide communications between local and remote devices having low-frequency (LF) and high-frequency (HF) circuits. As may be implemented in accordance with one or more embodiments, the local device transmits an LF signal to the remote device, which synchronizes its clock based on the LF signal. Another LF signal is communicated from the local device to the remote device using a reduced quality factor, which can be implemented to facilitate synchronization. The clock is resynchronized based on the second LF signal and used to transmit an HF signal with a time delay. The local device synchronizes its clock based on the HF signal, and transmits another HF signal to the remote device using the clock and another time delay. The remote device re-synchronizes its clock based on the second HF signal while accounting for a trip time for communicating the first and/or second HF signals.
Abstract translation: 本公开的方面提供具有低频（LF）和高频（HF）电路的本地和远程设备之间的通信。 如可以根据一个或多个实施例来实现的，本地设备向远程设备发送LF信号，该远程设备基于LF信号同步其时钟。 另一个LF信号使用降低的品质因子从本地设备传送到远程设备，这可以被实现以促进同步。 基于第二LF信号重新同步时钟，并用于以时间延迟发送HF信号。 本地设备基于HF信号同步其时钟，并使用时钟和另一个时间延迟将另一个HF信号发送到远程设备。 远程设备基于第二HF信号重新同步其时钟，同时考虑用于传送第一和/或第二HF信号的跳闸时间。
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公开(公告)号：US10158390B2
公开(公告)日：2018-12-18
申请号：US15139457
申请日：2016-04-27
Applicant: NXP B.V.
Inventor： Andries Hekstra , Alessio Filippi , Semih Serbetli , Arie Koppelaar
Abstract: According to the present disclosure, there is provided methods of processing a signal using quantized symbols. More particularly, in one example, the method comprises the steps of processing a signal (206), said method comprising the steps of: receiving a signal (206) comprising a plurality of raw symbols, each raw symbol having a plurality of bits and being conveyed in a channel; estimating a channel state information value (206) of the channel used to convey each raw symbol to generate a corresponding plurality of channel state information values; quantizing the plurality of raw symbols based on their channel state information values to generate a sequence of quantized symbols (214); and quantizing the channel state information values to generate a sequence of quantized channel state values (216).
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公开(公告)号：US20160302074A1
公开(公告)日：2016-10-13
申请号：US14683367
申请日：2015-04-10
Applicant: NXP B.V.
Inventor： Andries Hekstra , Stefan Drude , Frank Leong , Arie Koppelaar
IPC: H04W12/10 , H04L9/00 , H04B1/7097
CPC classification number: H04L9/00 , H04B1/692 , H04B1/71632 , H04B10/116 , H04B2201/70715 , H04L63/0435 , H04L63/1466
Abstract: Various exemplary embodiments relate to a method of communicating by a transmitter. Embodiments of the method may include creating information to be used by a receiver to define a spreading sequence for a subsequent packet, coding the information into a current communications packet, and transmitting the current communications packet.
Abstract translation: 各种示例性实施例涉及由发射机进行通信的方法。 该方法的实施例可以包括创建要由接收机使用的信息来定义用于后续分组的扩展序列，将该信息编码为当前通信分组，以及发送当前通信分组。
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