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    Fractional bit rate encoding in a pulse amplitude modulation communication system
    1.
    发明授权
    Fractional bit rate encoding in a pulse amplitude modulation communication system 失效
    脉冲幅度调制通信系统中的分数位速率编码

    公开(公告)号：US06993067B1

    公开(公告)日：2006-01-31

    申请号：US09780547

    申请日：2001-02-09

    申请人： William L. Betts ,  Kenneth D. Ko

    发明人： William L. Betts ,  Kenneth D. Ko

    IPC分类号： H03K11/00

    CPC分类号： H04L25/4917 ,  H04B1/40

    摘要： Fractional bit rate encoding in a pulse amplitude modulation (PAM) communication environment allows the transmission of fractional bit rates, thus maximizing the use of signal-to-noise ratio (SNR) available on a communication channel. The invention allows the transmission of fractional bit rates in a PAM transceiver, thus allowing the encoding and transmission of a fractional number of bits on each PAM transmit symbol. By encoding a non-integer number of bits, a non power-of-two number of PAM levels can be encoded.

    摘要翻译： 脉冲幅度调制（PAM）通信环境中的分数比特率编码允许分数比特率的传输，从而最大化在通信信道上可用的信噪比（SNR）的使用。 本发明允许在PAM收发器中传输分数比特率，从而允许对每个PAM发送符号上的分数个比特的编码和传输。 通过对非整数位进行编码，可以编码非幂数2个PAM电平。

    Shaped signal spaces in a simultaneous voice and data system
    2.
    发明授权
    Shaped signal spaces in a simultaneous voice and data system 失效
    同步语音和数据系统中的形状信号空间

    公开(公告)号：US5475713A

    公开(公告)日：1995-12-12

    申请号：US76530

    申请日：1993-06-14

    申请人： Gordon Bremer ,  Kenneth D. Ko ,  Luke J. Smithwick

    发明人： Gordon Bremer ,  Kenneth D. Ko ,  Luke J. Smithwick

    IPC分类号： H04J7/00 ,  H04L27/34 ,  H04L5/12 ,  H04L27/04

    CPC分类号： H04J7/00 ,  H04L27/3483

    摘要： In a simultaneous voice and data communications system, a voice signal is mapped into an N-dimensional signal space constellation as a vector, and added to a reference signal point, i.e., a data symbol, where the data symbol is selected from a constellation of data symbols every signaling interval as a function of a data signal. The constellation signal space is further divided into a number of shaped regions, where each region is associated with a different one of the data symbols. The shape of each region is selected as a function of the characteristics of the voice, or audio, signal. In particular, each region illustratively has a rectangular shape.

    摘要翻译： 在同时的语音和数据通信系统中，语音信号被映射为N维信号空间星座作为向量，并且被添加到参考信号点，即数据符号，其中数据符号从 每个信令间隔的数据符号作为数据信号的函数。 星座信号空间被进一步分成多个成形区域，其中每个区域与不同的数据符号相关联。 根据声音或音频信号的特性来选择每个区域的形状。 特别地，每个区域示例性地具有矩形形状。

    Systems and methods for communicating among network distribution points
    3.
    发明授权
    Systems and methods for communicating among network distribution points 有权

    公开(公告)号：US09692481B2

    公开(公告)日：2017-06-27

    申请号：US14857531

    申请日：2015-09-17

    申请人： Fred Chu ,  Kenneth D. Ko

    发明人： Fred Chu ,  Kenneth D. Ko

    IPC分类号： H04B3/32

    CPC分类号： H04B3/32

    摘要： A communication system has a trunk extending from a network facility, such as a central office, with a plurality of distribution points positioned along the trunk. Each leg of the trunk defines a shared channel that permits peak data rates much greater than what would be achievable without channel sharing. As an example, the connections of each respective trunk leg may be bonded. Further, the same modulation format and crosstalk vectoring are used for each leg of the trunk. The crosstalk vectoring cancels both far-end crosstalk (FEXT) that couples between connections of a given trunk leg and crossover crosstalk that couples between one trunk leg and another. In addition, logic determines an amount of excess capacity available for each leg of the trunk and controls error correction based on the determined excess capacity.

    Systems and methods for communicating with multiple distribution points of a network
    4.
    发明授权
    Systems and methods for communicating with multiple distribution points of a network 有权
    用于与网络的多个分发点通信的系统和方法

    公开(公告)号：US08411696B1

    公开(公告)日：2013-04-02

    申请号：US12839400

    申请日：2010-07-19

    申请人： Kenneth D. Ko ,  Kevin W. Schneider

    发明人： Kenneth D. Ko ,  Kevin W. Schneider

    IPC分类号： H04L12/56 ,  H04J1/16

    CPC分类号： H04M19/00 ,  H04L12/18 ,  H04L12/2861 ,  H04L12/2867 ,  H04L12/2869 ,  H04L12/2878 ,  H04M3/005 ,  H04M3/007 ,  H04M11/062 ,  Y02D50/30

    摘要： The present disclosure generally pertains to systems and methods for communicating data. In one exemplary embodiment, a system has a high-speed channel, such as an optical fiber, between a network facility, such as a central office (CO), and a first intermediate point between the network facility and a plurality of customer premises (CP). Digital communication links, such as DSL links, are used to carry data between the first intermediate point, such as a feeder distribution interface (FDI), and a second intermediate point, such as the Distribution Point (DP). Non-shared links may then carry the data from the second intermediate point to the CPs. The links between the two intermediate points are bonded to create a high-speed, shared data channel that permits peak data rates much greater than what would be achievable without bonding. In some embodiments, multicast data flows may be prioritized and transmitted across a set of connections to each of the intermediate points. In addition, it is possible to power components at the intermediate points from one or more of the CPs.

    摘要翻译： 本公开通常涉及用于传送数据的系统和方法。 在一个示例性实施例中，系统在诸如中心局（CO）的网络设施和网络设施与多个客户驻地之间的第一中间点之间具有诸如光纤之类的高速信道（ CP）。 诸如DSL链路的数字通信链路用于在第一中间点（例如馈线分配接口（FDI））和诸如分配点（DP）的第二中间点之间传送数据。 然后，非共享链路可以将数据从第二中间点传送到CP。 两个中间点之间的链接被粘合以产生高速共享数据信道，其允许峰值数据速率远大于没有粘合可实现的数据速率。 在一些实施例中，多播数据流可以被优先化并且跨越一组连接发送到每个中间点。 另外，可以从一个或多个CP的中间点处的元件供电。

    SYSTEMS AND METHODS FOR COMMUNICATING AMONG NETWORK DISTRIBUTION POINTS
    5.
    发明申请
    SYSTEMS AND METHODS FOR COMMUNICATING AMONG NETWORK DISTRIBUTION POINTS 有权
    在网络分配点上进行通信的系统和方法

    公开(公告)号：US20130010585A1

    公开(公告)日：2013-01-10

    申请号：US13178249

    申请日：2011-07-07

    申请人： Fred Chu ,  Kenneth D. Ko ,  Richard Goodson ,  Kevin W. Schneider

    发明人： Fred Chu ,  Kenneth D. Ko ,  Richard Goodson ,  Kevin W. Schneider

    IPC分类号： H04J3/10

    CPC分类号： H04B3/32

    摘要： A communication system has a trunk extending from a network facility, such as a central office, with a plurality of distribution points positioned along the trunk. Each leg of the trunk defines a shared channel that permits peak data rates much greater than what would be achievable without channel sharing. As an example, the connections of each respective trunk leg may be bonded. Further, the same modulation format and crosstalk vectoring are used for each leg of the trunk. The crosstalk vectoring cancels both far-end crosstalk (FEXT) that couples between connections of a given trunk leg and crossover crosstalk that couples between one trunk leg and another. In addition, logic determines an amount of excess capacity available for each leg of the trunk and controls error correction based on the determined excess capacity.

    摘要翻译： 通信系统具有从诸如中心局的网络设施延伸的中继线，沿着中继线定位多个分配点。 中继线的每一条都定义了一个共享信道，允许峰值数据速率远远大于没有信道共享可实现的数据速率。 作为示例，每个相应的中继支路的连接可以被联结。 此外，相同的调制格式和串扰向量被用于中继线的每个支路。 串扰向量消除了在给定中继线的连接之间耦合的远端串扰（FEXT）和耦合在一个中继线与另一个之间的交叉串扰。 此外，逻辑决定了可用于中继线的每个支路的超量容量的量，并且基于所确定的过剩容量来控制纠错。

    Digital subscriber line modem utilizing echo cancellation to reduce near-end cross-talk noise
    6.
    发明授权
    Digital subscriber line modem utilizing echo cancellation to reduce near-end cross-talk noise 失效
    数字用户线调制解调器利用回波消除来减少近端串扰噪声

    公开(公告)号：US06263077B1

    公开(公告)日：2001-07-17

    申请号：US09028141

    申请日：1998-02-23

    申请人： Edward S. Zuranski ,  Kenneth D. Ko ,  Jamal Haque ,  Shrenik P. Patravali ,  Manuel I. Rodriguez ,  Keith A. Souders ,  Anthony A. Tzouris

    发明人： Edward S. Zuranski ,  Kenneth D. Ko ,  Jamal Haque ,  Shrenik P. Patravali ,  Manuel I. Rodriguez ,  Keith A. Souders ,  Anthony A. Tzouris

    IPC分类号： H04B320

    CPC分类号： H04L1/0057 ,  H04L1/0002 ,  H04L1/0021 ,  H04L7/048 ,  H04L7/10 ,  H04L27/0002 ,  H04L47/10 ,  H04M11/062 ,  Y02D50/10

    摘要： A digital subscriber line communication system does not require the use of a plain old telephone service (POTS) splitter in the resident's home. Digital signal-processing techniques are utilized to accommodate varying subscriber line conditions coming from POTS telephone equipment. The digital signal-processing techniques eliminate the need for a splitter by reducing susceptibility to distortion resulting from varying subscriber line characteristics. The digital subscriber line modem can utilize quadrature amplitude modulated (QAM) signals and frequency division multiplexing. The digital subscriber line modem includes a control circuit that implements an echo canceler and an analyzer to reduce near-end cross-talk noise. The analyzer performs spectral analysis to preemphasize or to predistort the transmitted signals in accordance with the cross-talk noise.

    摘要翻译： 数字用户线路通信系统不需要在居民的家中使用普通老式电话服务（POTS）分离器。 利用数字信号处理技术来适应来自POTS电话设备的不同用户线路状况。 数字信号处理技术通过减少由于不同的用户线路特性导致的失真的敏感性，消除了对分路器的需要。 数字用户线路调制解调器可以利用正交幅度调制（QAM）信号和频分复用。 数字用户线路调制解调器包括实现回波消除器的控制电路和分析器，以减少近端串扰噪声。 分析仪执行频谱分析，以根据串扰噪声预加重或预失真发送的信号。

    Companding of voice signal for simultaneous voice and data transmission
    10.
    发明授权
    Companding of voice signal for simultaneous voice and data transmission 失效
    语音信号压缩同步语音和数据传输

    公开(公告)号：US5559791A

    公开(公告)日：1996-09-24

    申请号：US76506

    申请日：1993-06-14

    申请人： Gordon Bremer ,  Kenneth D. Ko ,  Luke J. Smithwick

    发明人： Gordon Bremer ,  Kenneth D. Ko ,  Luke J. Smithwick

    IPC分类号： H03M7/30 ,  H03G7/00 ,  H04J7/00 ,  H04L27/34 ,  H04J11/00

    CPC分类号： H03G7/007 ,  H04J7/00 ,  H04L27/3483

    摘要： In a simultaneous voice and data communications system, a voice signal is added to a data signal before transmission over the public switched telephone network (PSTN). In particular, in every signaling interval, a signal point is selected for transmission as a function of both the voice signal and the data signal. Since the voice signal is effectively offset by the data signal, compandors normally found in the PSTN are not effective in improving the signal to noise ratio of the transmitted voice and data signal. Therefore, the voice signal is additionally companded in the transmitter before transmission over the PSTN. This additional companding by the transmitter improves the signal to noise ratio of the combined voice and data signal.

    摘要翻译： 在同时的语音和数据通信系统中，在通过公共交换电话网（PSTN）传输之前，将语音信号添加到数据信号。 特别地，在每个信令间隔中，选择信号点作为语音信号和数据信号两者的传输。 由于语音信号被数据信号有效地偏移，所以在PSTN中通常发现的压缩器在提高发送的语音和数据信号的信噪比方面是无效的。 因此，在通过PSTN传输之前，语音信号被附加地压缩在发射机中。 发射机的这种附加压扩可以提高组合的语音和数据信号的信噪比。