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    Wireless power transfer in-band communication system
    1.
    发明授权
    Wireless power transfer in-band communication system 有权

    公开(公告)号：US10411831B2

    公开(公告)日：2019-09-10

    申请号：US14215084

    申请日：2014-03-17

    申请人： MEDIATEK Singapore Pte. Ltd.

    发明人： William Plumb ,  Zhen Wang ,  Zoran Zvonar ,  Patrick Stanley Riehl ,  Anand Satyamoorthy ,  Philip Frank Tustin

    IPC分类号： H04L1/00 ,  H04L25/06 ,  H04L25/03 ,  H04L7/00 ,  H03M5/12 ,  H03M5/14 ,  H03M13/15 ,  H03M13/19 ,  H04L7/04

    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.

    WIRELESS POWER TRANSFER IN-BAND COMMUNICATION SYSTEM
    2.
    发明申请
    WIRELESS POWER TRANSFER IN-BAND COMMUNICATION SYSTEM 审中-公开
    无线电力传输带内通信系统

    公开(公告)号：US20160254696A1

    公开(公告)日：2016-09-01

    申请号：US15147919

    申请日：2016-05-06

    申请人： MediaTek Singapore Pte. Ltd.

    发明人： William Plumb ,  Zhen Wang ,  Zoran Zvonar ,  Patrick Stanley Riehl ,  Anand Satyamoorthy ,  Philip Frank Tustin

    IPC分类号： H02J7/02 ,  H04L1/00 ,  H04B5/00 ,  H02J50/10 ,  H02J50/60

    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。

    WIRELESS POWER TRANSFER IN-BAND COMMUNICATION SYSTEM
    3.
    发明申请
    WIRELESS POWER TRANSFER IN-BAND COMMUNICATION SYSTEM 有权
    无线电力传输带内通信系统

    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

    IPC分类号： H04L1/00 ,  H04L25/49

    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） 。

    Wireless power transfer in-band communication system
    4.
    发明授权
    Wireless power transfer in-band communication system 有权
    无线功率传输带内通信系统

    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

    IPC分类号： H04L27/10 ,  H04L1/00 ,  H04W52/02 ,  H04L25/49 ,  H02J7/02

    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） 。