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    Data circuit terminating equipment (DCE) including timing arrangements circuits controlled by processing means
    31.
    发明授权
    Data circuit terminating equipment (DCE) including timing arrangements circuits controlled by processing means 失效
    数据电路终端设备（DCE），包括由处理装置控制的定时装置电路

    公开(公告)号：US5315622A

    公开(公告)日：1994-05-24

    申请号：US754104

    申请日：1991-09-03

    申请人： Jean-Claude Abbiate ,  Alain Blanc ,  Gottfried Ungerboeck

    发明人： Jean-Claude Abbiate ,  Alain Blanc ,  Gottfried Ungerboeck

    IPC分类号： H04L7/02 ,  H04L7/033 ,  H04L27/00 ,  H04L27/24 ,  H04L29/10 ,  H04L7/00

    CPC分类号： H04L27/24 ,  H04L27/00 ,  H04L7/0331

    摘要： Data Circuit Terminating Equipment (DCE) allows the connection of a Data Terminal Equipment (DTE) to a telecommunication line. The DCE includes timing elements for providing the DTE with any desired transmitter signal element timing and any desired receiver signal element timing. The timing elements include processing elements for computing a sequence of digital values A(n) and for deriving therefrom a corresponding sequence of interrupt signals T(n). The receiver signal element timing, the transmitter signal element timing, the transmit sampling clock pulsing the D/A converter and the receive sampling clock pulsing the A/D converter are all controlled by different sequences of digital values computed by the processing elements. By generating appropriate sequences of digital values, the processing elements can provide any desired relationship between the different clocks to satisfy a transmit signal element timing slaved to the receiver signal element timing in synchronous mode, or on an external clock in tailing mode. The timing elements can also provide a transmit sampling clock slaved to the receive sampling clock in order to perform powerful digital echo cancellation techniques. Moreover, the processing elements can control the persistence of a received bit, which if a STOP bit, can allow the compensation of the DTE and the line data throughput difference.

    摘要翻译： 数据电路终端设备（DCE）允许将数据终端设备（DTE）连接到电信线路。 DCE包括用于向DTE提供任何期望的发射机信号元素定时和任何期望的接收机信号元素定时的定时元件。 定时元件包括用于计算数字值A（n）的序列的处理元件，并由此导出相应的中断信号序列T（n）。 接收器信号元件定时，发送器信号元件定时，脉冲D / A转换器的发送采样时钟和脉冲A / D转换器的接收采样时钟都由处理元件计算的不同数字值序列控制。 通过产生数字值的适当序列，处理元件可以在不同时钟之间提供任何期望的关系，以满足在同步模式下或者在拖尾模式下的外部时钟在从属于接收机信号元件定时的发射信号元素定时。 定时元件还可以提供从属于接收采样时钟的发射采样时钟，以执行强大的数字回波消除技术。 此外，处理元件可以控制接收位的持续性，如果STOP位可以允许补偿DTE和线数据吞吐量差。

    Automode signal detection in full duplex modems
    32.
    发明授权
    Automode signal detection in full duplex modems 失效
    全双工调制解调器中的自动编码信号检测

    公开(公告)号：US5309476A

    公开(公告)日：1994-05-03

    申请号：US766881

    申请日：1991-09-26

    申请人： Jack T. Murray ,  Gottfried Ungerboeck ,  Malcolm S. Ware

    发明人： Jack T. Murray ,  Gottfried Ungerboeck ,  Malcolm S. Ware

    IPC分类号： H04L27/00 ,  H04L27/22 ,  H04L5/16

    CPC分类号： H04L27/0012

    摘要： Method and apparatus for determining occurrence of an S1 modem identification sequence is disclosed. An S1 sequence is found to exist when the sum of conjugate complex multiplication of signal sample amplitudes taken at an interval T/2 result in a negative scalar value for an arbitrary number of sequential occurrences. Complex samples taken from incoming baseband waveform at twice the modulation rate are interleaved in pairs of two with two even numbered samples and two odd numbered samples being considered separately by first performing complex multiplication followed by scalar multiplication of an output of the complex multiplication and an output of the previous complex multiplication delayed by one modulation interval T. The separate results from the sets of pairs of signal samples are summed to form a scalar whose value when consistently less than 0 indicates the presence of an S1 modem identification sequence in accordance with the CCITT S1 recommendation.

    摘要翻译： 公开了一种用于确定S1调制解调器识别序列的发生的方法和装置。 当以间隔T / 2获取的信号样本幅度的共轭复数乘法的和导致任意数量的连续出现的负标量值时，发现S1序列存在。 以两倍于调制速率的入局基带波形采集的复杂样本以两个偶数编号的采样成对进行交织，并且通过首先执行复乘乘以复乘乘法的输出的标量乘法和输出 前一个复数乘法延迟一个调制间隔T.来自信号样本对组的单独结果相加以形成一个标量，其值一直小于0表示存在根据CCITT的S1调制解调器识别序列 S1推荐。

    Signal processing under attenuated transmission conditions
    35.
    发明申请
    Signal processing under attenuated transmission conditions 有权
    衰减传输条件下的信号处理

    公开(公告)号：US20110286473A1

    公开(公告)日：2011-11-24

    申请号：US13118430

    申请日：2011-05-29

    申请人： Bruce J. Currivan ,  Thomas J. Kolze ,  Daniel H. Howard ,  Gottfried Ungerboeck

    发明人： Bruce J. Currivan ,  Thomas J. Kolze ,  Daniel H. Howard ,  Gottfried Ungerboeck

    IPC分类号： H04L27/28 ,  H04J3/00 ,  H04J13/00

    CPC分类号： H04L27/3411 ,  H04B1/71 ,  H04B1/7107 ,  H04B7/216 ,  H04L25/03038 ,  H04L25/03343 ,  H04L25/49 ,  H04L27/3405 ,  H04L2025/03375 ,  H04L2025/03477 ,  H04N7/17309 ,  H04N21/42676

    摘要： Signal processing under attenuated transmission conditions. Within an orthogonal signal space, the number of orthogonal signals that are used to transmit information from a transmitter to a receiver is reduced and the transmitted power of each of the now remaining orthogonal signals is modified; this may involve increasing the power of all of the remaining orthogonal signals equally or alternatively modifying them individually. The same modulation used before the reduction may also be used afterwards; within communication systems having multiple transmitter-receiver paths, this will ensure that the communication system's throughput and efficiency will remain unchanged even when one (or more) transmitter-receiver paths are highly attenuated. In addition, robust mode operation is provided for ranging and registering of transmitter devices when entering the communication system. In addition, the unused orthogonal signals may be employed to support interference cancellation of those orthogonal signals that are used to transmit information.

    摘要翻译： 衰减传输条件下的信号处理。 在正交信号空间内，减少了用于从发射机向接收机发送信息的正交信号的数量，并且修改了现在剩余的正交信号中的每一个的发送功率; 这可能涉及增加所有剩余的正交信号的功率，或者可以分别修改它们。 在还原之前使用的相同调制也可以随后使用; 在具有多个发射机 - 接收机路径的通信系统内，即使当一个（或多个）发射机 - 接收机路径被高度衰减时，这将确保通信系统的吞吐量和效率将保持不变。 另外，提供鲁棒模式操作，用于在进入通信系统时测距和注册发射机设备。 此外，可以采用未使用的正交信号来支持用于发送信息的那些正交信号的干扰消除。

    Method and System for 10GBase-T Start-Up
    37.
    发明申请
    Method and System for 10GBase-T Start-Up 有权
    10GBase-T启动的方法和系统

    公开(公告)号：US20110205934A1

    公开(公告)日：2011-08-25

    申请号：US13099760

    申请日：2011-05-03

    申请人： Gottfried Ungerboeck ,  Scott Powell

    发明人： Gottfried Ungerboeck ,  Scott Powell

    IPC分类号： H04L12/28

    CPC分类号： H04L41/08 ,  H04L12/403

    摘要： Certain aspects for the start-up procedure of transceivers supporting higher data rates over twisted-pair copper cabling are provided for 10 Gbit/sec Ethernet links (10GBASE-T). During a PMA (physical medium attachment) training period of the start-up procedure, long PMA training frames are exchanged periodically between link partners. A significant portion of each PMA training frame consists of known pseudo random sequences simultaneously transmitted over four wire pairs. PMA training frames include an InfoField for exchanging parameters and control information between link partners. For example, the InfoField's payload comprises fields for indicating current transmit power backoff (PBO), next PBO, requested PBO, transition count, control information, and for communicating precoder coefficients. Information in InfoFields is repeated and is not necessary that a link partner decodes every InfoField. For example, by occasionally reading the transition count, a link partner can determine when a change in transmit PBO and/or a state transition is to occur.

    摘要翻译： 为10Gbit /秒以太网链路（10GBASE-T）提供了通过双绞铜缆布线支持更高数据速率的收发器的启动过程的某些方面。 在启动程序的PMA（物理介质附加）训练期间，长链PMA训练帧在链路伙伴之间定期交换。 每个PMA训练帧的重要部分由通过四个线对同时传输的已知伪随机序列组成。 PMA培训框架包括用于在链接伙伴之间交换参数和控制信息的InfoField。 例如，InfoField的有效载荷包括用于指示当前发送功率回退（PBO），下一个PBO，所请求的PBO，转移计数，控制信息以及用于传达预编码器系数的字段。 InfoFields中的信息被重复，链接伙伴不需要对每个InfoField进行解码。 例如，通过偶尔读取转换计数，链路伙伴可以确定何时发生传输PBO和/或状态转换的变化。

    System and method for Huffman shaping in a data communication system
    38.
    发明授权
    System and method for Huffman shaping in a data communication system 有权
    数据通信系统中霍夫曼整形的系统和方法

    公开(公告)号：US08000387B2

    公开(公告)日：2011-08-16

    申请号：US12751647

    申请日：2010-03-31

    申请人： Gottfried Ungerboeck ,  Arthur J. Carlson

    发明人： Gottfried Ungerboeck ,  Arthur J. Carlson

    IPC分类号： H04B1/66

    CPC分类号： H04L27/3405 ,  H03M7/40

    摘要： In a communication system, Huffman coding techniques are used to obtain shaping gains for an improvement in data transmission rates. More particularly, a novel method of Huffman shaping is described that achieves a shaping gain of greater than 1 dB. The shaping gain results in a higher data rate transmission in a communication system where transmitted power is constrained.

    摘要翻译： 在通信系统中，使用霍夫曼编码技术获得整形增益以提高数据传输速率。 更具体地，描述了一种实现霍夫曼整形的新方法，其实现了大于1dB的整形增益。 整形增益导致传输功率受限的通信系统中的较高数据速率传输。

    Method and system for 10GBASE-T start-up
    40.
    发明授权
    Method and system for 10GBASE-T start-up 有权
    10GBASE-T启动的方法和系统

    公开(公告)号：US07936778B2

    公开(公告)日：2011-05-03

    申请号：US11410172

    申请日：2006-04-24

    申请人： Gottfried Ungerboeck ,  Scott Powell

    发明人： Gottfried Ungerboeck ,  Scott Powell

    IPC分类号： H04J3/00 ,  H04L12/26

    CPC分类号： H04L41/08 ,  H04L12/403

    摘要： Certain aspects for the start-up procedure of transceivers supporting higher data rates over twisted-pair copper cabling are provided for 10 Gbit/sec Ethernet links (10GBASE-T). During a PMA (physical medium attachment) training period of the start-up procedure, long PMA training frames are exchanged periodically between link partners. A significant portion of each PMA training frame consists of known pseudo random sequences simultaneously transmitted over four wire pairs. PMA training frames include an InfoField for exchanging parameters and control information between link partners. For example, the InfoField's payload comprises fields for indicating current transmit power backoff (PBO), next PBO, requested PBO, transition count, control information, and for communicating precoder coefficients. Information in InfoFields is repeated and is not necessary that a link partner decodes every InfoField. For example, by occasionally reading the transition count, a link partner can determine when a change in transmit PBO and/or a state transition is to occur.

    摘要翻译： 为10Gbit /秒以太网链路（10GBASE-T）提供了通过双绞铜缆布线支持更高数据速率的收发器的启动过程的某些方面。 在启动程序的PMA（物理介质附加）训练期间，长链PMA训练帧在链路伙伴之间定期交换。 每个PMA训练帧的重要部分由通过四个线对同时传输的已知伪随机序列组成。 PMA培训框架包括用于在链接伙伴之间交换参数和控制信息的InfoField。 例如，InfoField的有效载荷包括用于指示当前发送功率回退（PBO），下一个PBO，所请求的PBO，转移计数，控制信息以及用于传达预编码器系数的字段。 InfoFields中的信息被重复，链接伙伴不需要对每个InfoField进行解码。 例如，通过偶尔读取转换计数，链路伙伴可以确定何时发生传输PBO和/或状态转换的变化。