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公开(公告)号：US20140269886A1
公开(公告)日：2014-09-18
申请号：US14215084
申请日：2014-03-17
申请人： William Plumb , Zhen Wang , Zoran Zvonar , Patrick Riehl , Anand Satyamoorthy , Philip Frank Tustin , MediaTek Singapore Pte. Ltd.
发明人： William Plumb , Zhen Wang , Zoran Zvonar , Patrick Stanley Riehl , Anand Satyamoorthy , Philip Frank Tustin
CPC分类号： H04L1/0042 , H03M5/12 , H03M5/145 , H03M13/152 , H03M13/19 , H04L1/0041 , H04L1/0045 , H04L1/0057 , H04L7/0058 , H04L7/0087 , H04L7/042 , H04L25/03834 , H04L25/061
摘要： A wireless charging in-band communication system includes a channel encoding for message error correction and detection. A modulation module performs biphase modulation for DC balanced signals and impedance switching to change reflected impedance seen by the source. A synchronization module prepends the message with a synchronization sequence having Golay complementary codes. A receiver module receives the message from the transmitter module. A preamble detection block has a Golay complementary code correlator used for message detection, synchronization, and equalization coefficient estimation and selection. A decoding module that performs biphase demodulation with error correction with a DC offset being estimated as the average value of the signal over the length of the message before channel decoding. The decoding module performs equalization, error correction and detection channel decoding.
摘要翻译： 无线充电带内通信系统包括用于消息纠错和检测的信道编码。 调制模块对直流平衡信号进行双相调制，并进行阻抗切换，以改变源所见的反射阻抗。 同步模块用具有Golay补码的同步序列来填充消息。 接收机模块从发射机模块接收消息。 前导码检测块具有用于消息检测，同步和均衡系数估计和选择的Golay互补码相关器。 执行具有纠错的双相解调的解码模块，其中DC偏移被估计为在信道解码之前的消息长度上的信号的平均值。 解码模块执行均衡，纠错和检测信道解码。
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公开(公告)号：US20140314170A1
公开(公告)日：2014-10-23
申请号：US14356607
申请日：2013-10-25
申请人： William Plumb , Zhen Wang , Zoran Zvonar , Patrick Stanley Riehl , Anand Satyamoorthy , Philip Frank Tustin , MediaTek Singapore Pte, Ltd.
发明人： William Plumb , Zhen Wang , Zoran Zvonar , Patrick Stanley Riehl , Anand Satyamoorthy , Philip Frank Tustin
CPC分类号： H02J50/12 , H02J7/025 , H02J50/10 , H02J50/60 , H02J50/80 , H04B5/0037 , H04B5/0093 , H04L1/0045 , H04L1/0061 , H04L25/4904 , H04W52/0261
摘要： A wireless charging in-band communication system includes a transmitter module that formats a message using CRC calculation and attaches the results of the CRC calculation to the message for message error detection. The transmitter includes channel encoding for message error correction. A modulation module performs biphase modulation for DC balanced signals and impedance switching to change reflected impedance seen by the source. A synchronization module prepending the message with a synchronization sequence having Golay complementary codes. Moreover, the in-band communication includes a receiver module that receives the message from the transmitter module. The receiver module includes an impedance sensing circuit to detect changes in the reflected impedance of the transmitter module. The receiver module includes a front end filter used for pulse shaping and noise rejection. A preamble detection block includes a Golay complementary code correlator used for message detection, synchronization, and equalization coefficient estimation and selection. A decoding module performs biphase demodulation with error correction with a DC offset being estimated as the average value of the signal over the length of the message before channel decoding Also, the decoding module performs equalization, error correction channel decoding,and error detection (CRC).
摘要翻译： 无线充电带内通信系统包括发射机模块，其使用CRC计算格式化消息，并将CRC计算的结果附加到用于消息错误检测的消息。 发射机包括消息纠错的信道编码。 调制模块对直流平衡信号进行双相调制，并进行阻抗切换，以改变源所见的反射阻抗。 一个同步模块，前置消息具有一个具有Golay补码的同步序列。 此外，带内通信包括从发射机模块接收消息的接收机模块。 接收器模块包括用于检测发射器模块的反射阻抗的变化的阻抗感测电路。 接收器模块包括用于脉冲整形和噪声抑制的前端滤波器。 前导码检测块包括用于消息检测，同步和均衡系数估计和选择的Golay互补码相关器。 解码模块执行纠错的双相解调，其中DC偏移被估计为在信道解码之前的消息的长度上的信号的平均值。另外，解码模块执行均衡，纠错信道解码和错误检测（CRC） 。
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公开(公告)号：US09363041B2
公开(公告)日：2016-06-07
申请号：US14356607
申请日：2013-10-25
申请人： William Plumb , Zhen Wang , Zoran Zvonar , Patrick Stanley Riehl , Anand Satyamoorthy , Philip Frank Tustin , MediaTek Singapore Pte. Ltd.
发明人： William Plumb , Zhen Wang , Zoran Zvonar , Patrick Stanley Riehl , Anand Satyamoorthy , Philip Frank Tustin
CPC分类号： H02J50/12 , H02J7/025 , H02J50/10 , H02J50/60 , H02J50/80 , H04B5/0037 , H04B5/0093 , H04L1/0045 , H04L1/0061 , H04L25/4904 , H04W52/0261
摘要： A wireless charging in-band communication system includes a transmitter module that formats a message using CRC calculation and attaches the results of the CRC calculation to the message for message error detection. The transmitter includes channel encoding for message error correction. A modulation module performs biphase modulation for DC balanced signals and impedance switching to change reflected impedance seen by the source. A synchronization module prepending the message with a synchronization sequence having Golay complementary codes. Moreover, the in-band communication includes a receiver module that receives the message from the transmitter module. The receiver module includes an impedance sensing circuit to detect changes in the reflected impedance of the transmitter module. The receiver module includes a front end filter used for pulse shaping and noise rejection. A preamble detection block includes a Golay complementary code correlator used for message detection, synchronization, and equalization coefficient estimation and selection. A decoding module performs biphase demodulation with error correction with a DC offset being estimated as the average value of the signal over the length of the message before channel decoding Also, the decoding module performs equalization, error correction channel decoding,and error detection (CRC).
摘要翻译： 无线充电带内通信系统包括发射机模块，其使用CRC计算格式化消息，并将CRC计算的结果附加到用于消息错误检测的消息。 发射机包括用于消息纠错的信道编码。 调制模块对直流平衡信号进行双相调制，并进行阻抗切换，以改变源所见的反射阻抗。 一个同步模块，前置消息具有一个具有Golay补码的同步序列。 此外，带内通信包括从发射机模块接收消息的接收机模块。 接收器模块包括用于检测发射器模块的反射阻抗的变化的阻抗感测电路。 接收器模块包括用于脉冲整形和噪声抑制的前端滤波器。 前导码检测块包括用于消息检测，同步和均衡系数估计和选择的Golay互补码相关器。 解码模块执行纠错的双相解调，其中DC偏移被估计为在信道解码之前的消息的长度上的信号的平均值。另外，解码模块执行均衡，纠错信道解码和错误检测（CRC） 。
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公开(公告)号：US20160028268A1
公开(公告)日：2016-01-28
申请号：US14771568
申请日：2014-03-14
申请人： Timothy Perrin FISHER-JEFFES , William PLUMB , Patrick Stanley RIEHL , Anand SATYAMOORTHY , MEDIATEK SINGAPORE PTE. LTD.
CPC分类号： H02J50/90 , H02J7/0021 , H02J7/0027 , H02J7/042 , H02J17/00 , H02J50/12 , H02J50/40 , H02J50/60 , H02J50/80
摘要： A wireless charging system is provided that includes a charger portion that receives one or more portable elements for charging wirelessly. The charger portion controls the amount of power needed to charge the one or more portable elements. An inband communication module receives inband communications with the one or more portable elements using a random access mode. The charger portion utilizes the inband communications to determine how much power is needed, via energy based reporting, to charge the one or more portable elements that avoids conveying identification information.
摘要翻译： 提供一种无线充电系统，其包括充电器部分，其接收用于无线充电的一个或多个便携式元件。 充电器部分控制对一个或多个便携式元件充电所需的功率量。 带内通信模块使用随机接入模式接收与一个或多个便携式元件的带内通信。 充电器部分利用带内通信来通过基于能量的报告来确定需要多少功率，以对避免传送识别信息的一个或多个便携式元件进行充电。
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公开(公告)号：US09521622B2
公开(公告)日：2016-12-13
申请号：US13309571
申请日：2011-12-02
申请人： Yu-Han Yang , Yonggang Hao , William Plumb , Timothy Perrin Fisher-Jeffes , Jangwook Moon , Zoran Zvonar , Tze-Ping Low
发明人： Yu-Han Yang , Yonggang Hao , William Plumb , Timothy Perrin Fisher-Jeffes , Jangwook Moon , Zoran Zvonar , Tze-Ping Low
IPC分类号： H04W52/02
CPC分类号： H04W52/0238 , Y02D70/00 , Y02D70/1262
摘要： A wireless communication system is provided that includes a base station receiving a plurality of input signals that are selectively provided to a plurality of precoders. The precoders perform precoding operations on the input signals and output a first signal. The base station includes an algorithm that minimizes total transmit power per antenna under signal to interference and noise ratio (SINR) target constraints or maximizes the SINR under a sum of power constraint so as to determine power allocation and obtain efficient precoders. A number of mobile receiver units receive the first signal and performs their respective operations to extrapolate the linear estimate of the input signals.
摘要翻译： 提供了一种无线通信系统，其包括接收选择性地提供给多个预编码器的多个输入信号的基站。 预编码器对输入信号执行预编码操作并输出第一信号。 基站包括一种算法，其在信号与干扰和噪声比（SINR）目标约束之下使每个天线的总发射功率最小化，或者在功率约束的总和下使SINR最大化，以便确定功率分配并获得有效的预编码器。 多个移动接收机单元接收第一信号并执行它们各自的操作以外推输入信号的线性估计。
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公开(公告)号：US20130142128A1
公开(公告)日：2013-06-06
申请号：US13309571
申请日：2011-12-02
申请人： Yu-Han Yang , Yonggang Hao , William Plumb , Timothy Perrin Fisher-Jeffes , JANGWOOK MOON , Zoran Zvonar , Tze-Ping Low
发明人： Yu-Han Yang , Yonggang Hao , William Plumb , Timothy Perrin Fisher-Jeffes , JANGWOOK MOON , Zoran Zvonar , Tze-Ping Low
CPC分类号： H04W52/0238 , Y02D70/00 , Y02D70/1262
摘要： A wireless communication system is provided that includes a base station receiving a plurality of input signals that are selectively provided to a plurality of precoders. The precoders perform precoding operations on the input signals and output a first signal. The base station includes an algorithm that minimizes total transmit power per antenna under signal to interference and noise ratio (SINR) target constraints or maximizes the SINR under a sum of power constraint so as to determine power allocation and obtain efficient precoders. A number of mobile receiver units receive the first signal and performs their respective operations to extrapolate the linear estimate of the input signals.
摘要翻译： 提供了一种无线通信系统，其包括接收选择性地提供给多个预编码器的多个输入信号的基站。 预编码器对输入信号执行预编码操作并输出第一信号。 基站包括一种算法，其在信号与干扰和噪声比（SINR）目标约束之下使每个天线的总发射功率最小化，或者在功率约束的总和下使SINR最大化，以便确定功率分配并获得有效的预编码器。 多个移动接收机单元接收第一信号并执行它们各自的操作以外推输入信号的线性估计。
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公开(公告)号：US11237649B2
公开(公告)日：2022-02-01
申请号：US16026571
申请日：2018-07-03
摘要： Circuits for controlling magnetic-based tracking systems are described. These systems may be used in virtual reality applications, for example to track in real-time the location of one or more body parts. The systems use a beacon emitting mutually orthogonal magnetic fields. On the receiver side, one or more sensors disposed on different parts of a body receive the magnetic fields. The beacon includes switching amplifiers for driving the magnetic field emitters. Being binary, these amplifiers may be controlled by binary signals. The circuits may exhibit a resonant frequency response, and may be operated off-resonance, thus providing for a better control of the magnetic fields amplitude. As a result, however, fluctuations in the envelop of the magnetic fields due to the presence of a beating tone may arise. These fluctuations may be shortened by gradually activating the drivers for the magnetic field emitters.
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公开(公告)号：US20160254696A1
公开(公告)日：2016-09-01
申请号：US15147919
申请日：2016-05-06
发明人： William Plumb , Zhen Wang , Zoran Zvonar , Patrick Stanley Riehl , Anand Satyamoorthy , Philip Frank Tustin
CPC分类号： H02J50/12 , H02J7/025 , H02J50/10 , H02J50/60 , H02J50/80 , H04B5/0037 , H04B5/0093 , H04L1/0045 , H04L1/0061 , H04L25/4904 , H04W52/0261
摘要： A transmitter module is used in a wireless charging system, and is used for performing in-band communication with a receiver module in the wireless charging system to provide a message to the receiver module. The transmitter module has a matching network, a rectifier and an impedance component. The matching network has at least one input terminal coupled to a coil of the transmitter module and at least one output terminal. The rectifier is coupled to the output terminal of the matching network. The impedance component is selectively coupled to the output terminal of the matching network to vary a reflected impedance of the transmitter module seen by the receiver module. By varying the reflected impedance of the transmitter module seen by the receiver module, the transmitter module communicates with the receiver module to provide power control commands, status and/or foreign object detection information.
摘要翻译： 在无线充电系统中使用发射机模块，用于与无线计费系统中的接收机模块进行带内通信，以向接收机模块提供消息。 发射机模块具有匹配网络，整流器和阻抗组件。 匹配网络具有耦合到发射器模块的线圈和至少一个输出端子的至少一个输入端子。 整流器耦合到匹配网络的输出端。 阻抗分量选择性地耦合到匹配网络的输出端，以改变由接收器模块看到的发射器模块的反射阻抗。 通过改变由接收机模块看到的发射机模块的反射阻抗，发射机模块与接收机模块通信，以提供功率控制命令，状态和/或异物检测信息。
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公开(公告)号：US11726585B2
公开(公告)日：2023-08-15
申请号：US17473995
申请日：2021-09-13
CPC分类号： G06F3/038 , G01D5/2006 , G01S1/7036 , G01S1/7038 , G06F3/011 , H01F7/064 , G06F3/014 , G06F3/017
摘要： Circuits for controlling magnetic-based tracking systems are described. These systems may be used in virtual reality applications, for example to track in real-time the location of one or more body parts. The systems use a beacon emitting mutually orthogonal magnetic fields. On the receiver side, one or more sensors disposed on different parts of a body receive the magnetic fields. The beacon includes switching amplifiers for driving the magnetic field emitters. Being binary, these amplifiers may be controlled by binary signals. The circuits may exhibit a resonant frequency response, and may be operated off-resonance, thus providing for a better control of the magnetic fields amplitude. As a result, however, fluctuations in the envelop of the magnetic fields due to the presence of a beating tone may arise. These fluctuations may be shortened by gradually activating the drivers for the magnetic field emitters.
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公开(公告)号：US20220066572A1
公开(公告)日：2022-03-03
申请号：US17473995
申请日：2021-09-13
摘要： Circuits for controlling magnetic-based tracking systems are described. These systems may be used in virtual reality applications, for example to track in real-time the location of one or more body parts. The systems use a beacon emitting mutually orthogonal magnetic fields. On the receiver side, one or more sensors disposed on different parts of a body receive the magnetic fields. The beacon includes switching amplifiers for driving the magnetic field emitters. Being binary, these amplifiers may be controlled by binary signals. The circuits may exhibit a resonant frequency response, and may be operated off-resonance, thus providing for a better control of the magnetic fields amplitude. As a result, however, fluctuations in the envelop of the magnetic fields due to the presence of a beating tone may arise. These fluctuations may be shortened by gradually activating the drivers for the magnetic field emitters.
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