公开(公告)号：US06757339B1

公开(公告)日：2004-06-29

申请号：US09624207

申请日：2000-07-24

申请人： Tharmalingam Ratnarajah ,  Radde Majeed ,  Nidham Ben Rached

发明人： Tharmalingam Ratnarajah ,  Radde Majeed ,  Nidham Ben Rached

IPC分类号： H04B330

CPC分类号： H04L25/03267 ,  H04L25/03292 ,  H04L2025/03401

摘要： A method of estimating the sequence of transmitted symbols in a digital communication system is provided. By assuming that the transmitted symbols have a zero mean and a covariance matrix given by an identity matrix, as is the case in an EDGE communication system, the solution to the minimization of the expectation value of ∥{circumflex over (s)}−s∥2 always allows a lower triangular matrix to be found through Cholesky decomposition. The lower triangular matrix allows an efficient block decision-feedback sequence estimation to be carried out. The method is no more complex than the zero-forcing block decision-feedback sequence estimation technique, yet a solution always exists and performance is improved over the zero-forcing method.

摘要翻译： 提供了一种在数字通信系统中估计发送符号序列的方法。 通过假设所发送的符号具有由单位矩阵给出的零均值和协方差矩阵，如在EDGE通信系统中的情况一样，使得对于∥{circumflex over（s）}的期望值最小化的解决方案 ∥<2>总是允许通过Cholesky分解找到一个下三角矩阵。 下三角矩阵允许执行有效的块判决反馈序列估计。 该方法不比零强制块决策反馈序列估计技术复杂得多，但仍然存在一种解决方案，并且通过零强制方法提高性能。

公开(公告)号：US06185256B2

公开(公告)日：2001-02-06

申请号：US09062586

申请日：1998-04-20

申请人： Miyoshi Saito ,  Junji Ogawa

发明人： Miyoshi Saito ,  Junji Ogawa

IPC分类号： H04B330

CPC分类号： G11C7/1063 ,  G11C7/04 ,  G11C7/065 ,  G11C7/10 ,  G11C7/1006 ,  G11C7/1048 ,  G11C7/1051 ,  G11C7/1078 ,  G11C7/1096 ,  G11C11/4076 ,  G11C11/4091 ,  G11C11/4096 ,  G11C2207/002 ,  G11C2207/2227 ,  G11C2207/229 ,  H04L25/03878

摘要： A signal transmission system is constructed to transmit data over a signal transmission line without requiring precharging the signal transmission line for every bit, by eliminating the intersymbol interference component introduced by preceding data. The signal transmission line has a plurality of switchable signal transmission lines organized in a branching structure or a hierarchical structure, at least one target unit from which to read data is connected to each of the plurality of signal transmission lines, and a readout circuit including a circuit for eliminating the intersymbol interference component is connected to the signal transmission line, wherein the intersymbol interference component elimination circuit reduces noise introduced when the signal transmission line is switched between the plurality of signal transmission lines, and thereby provides a smooth intersymbol interference component elimination operation when the signal transmission line is switched. This makes continuous readout possible and achieves an increase in the overall speed of the signal transmission system.

摘要翻译： 信号传输系统被构造为通过消除由前面的数据引入的符号间干扰成分，通过信号传输线路传输数据，而不需要为每一位预充电信号传输线。 信号传输线具有以分支结构或层次结构组织的多个可切换信号传输线，从多个信号传输线中的每一个连接至少一个读取数据的目标单元，以及读出电路，包括： 用于消除符号间干扰分量的电路连接到信号传输线，其中，符号间干扰成分消除电路减少了在多个信号传输线之间切换信号传输线时引入的噪声，从而提供平滑的符号间干扰成分消除操作 当信号传输线路被切换时。 这使连续读出成为可能，并实现了信号传输系统的整体速度的提高。

公开(公告)号：US06654355B1

公开(公告)日：2003-11-25

申请号：US09460575

申请日：1999-12-14

申请人： Alain Marbach ,  Wolfgang Langer

发明人： Alain Marbach ,  Wolfgang Langer

IPC分类号： H04B330

CPC分类号： H04L29/06 ,  H04L12/4135 ,  H04L12/4625 ,  H04L12/4633 ,  H04L61/106 ,  H04L67/12 ,  H04L69/08 ,  H04L2012/40215 ,  H04L2212/00

摘要： A method and corresponding apparatus for communicating a controller area network (CAN) message between a sending node, attached to a sending CAN network, and a receiving node, where the sending and receiving nodes are interconnected by a network communicating according to transmission control protocol/Internet protocol (TCP/IP). The invention provides for having the sending node extract the CAN message payload (arbitration field, control field and data field if any) from a CAN message, having it embed the CAN message payload in a TCP/IP frame as the TCP/IP data field of the TCP/IP frame, having it refer to a routing form to determine the address on the TCP/IP network of the receiving node; and having it transmit the TCP/IP frame over the TCP/IP network using the address for the receiving node from the routing form. The invention also provides for having the receiving node extract the CAN message payload from the TCP/IP frame, and alter the identifier of the CAN message payload, as needed, so as to correspond to the CAN message content at the receiving node (i.e. in case the receiving node is attached to a receiving CAN network, to correspond to the CAN message content of the receiving CAN network, but if the receiving node hosts a browser and is not attached to a receiving CAN network, to correspond to the CAN message content according to the preference of the user of the browser), the altering performed by reference to a mapping-relating identifiers based on the network address of the sending node.

摘要翻译： 一种用于在附接到发送CAN网络的发送节点和接收节点之间传送控制器局域网（CAN）消息的方法和相应装置，其中发送和接收节点通过根据传输控制协议/ 互联网协议（TCP / IP）。 本发明提供使发送节点从CAN消息中提取CAN消息有效载荷（仲裁字段，控制字段和数据字段（如果有的话）），将CAN消息有效载荷嵌入在TCP / IP帧中作为TCP / IP数据字段 具有TCP / IP帧的参考路由形式来确定接收节点的TCP / IP网络上的地址; 并使其通过TCP / IP网络使用接收节点的地址从路由表单发送TCP / IP帧。 本发明还提供使接收节点从TCP / IP帧提取CAN消息有效载荷，并根据需要改变CAN消息有效载荷的标识符，以便对应于接收节点处的CAN消息内容（即， 情况下，接收节点连接到接收CAN网络，以对应于接收CAN网络的CAN消息内容，但是如果接收节点托管浏览器并且未附接到接收CAN网络，则对应于CAN消息内容 根据浏览器的用户的偏好），通过参考基于发送节点的网络地址的映射相关标识符来执行的改变。

公开(公告)号：US06714520B1

公开(公告)日：2004-03-30

申请号：US09306734

申请日：1999-05-07

申请人： Yusaku Okamura

发明人： Yusaku Okamura

IPC分类号： H04B330

CPC分类号： H04L5/006 ,  H04L5/0007 ,  H04L5/0046 ,  H04L5/143

摘要： A system for multi-carrier transmission which can secure the transmission capacity under the noise environment whose noise changes cyclically is provided. A mapping section in an ATU-C (ADSL transceiver unit, central office end) memorizes the bit allocation allocating to each carrier and transmission power allocation using for each carrier at the period that the noise generated at the data transmission to a downstream direction is large and the bit allocation allocating to each carrier and transmission power allocation using for each carrier at the period that the noise generated at the data transmission to an upstream direction is large. And a demapping section in an ATU-R (ADSL transceiver unit, remote terminal end) also memorizes the memorized bit allocation and transmission power allocation. At the time of the data transmission to the downstream direction, the bit allocation and transmission power allocation is allocated to each carrier of the high frequency band, by making the bit rate at the period that the noise generated at the data transmission to the downstream direction is small higher than the bit rate at the period that the noise is large. With this, the transmission capacity to the downstream direction can be secured.

摘要翻译： 一种用于多载波传输的系统，其可以在噪声周期性变化的噪声环境下确保传输容量。 ATU-C（ADSL收发器单元，中心局端）中的映射部分在向下游方向的数据传输产生的噪声大的时段，对每个载波存储分配给每个载波的比特分配和发送功率分配 分配给每个载波的比特分配和在数据传输到上行方向产生的噪声较大的周期的每个载波的发射功率分配。 并且ATU-R（ADSL收发器单元，远程终端端）中的解映射部分还记忆存储的位分配和传输功率分配。 在数据传输到下游方向时，通过使数据传输时产生的噪声到下行方向的比特率被分配给高频带的每个载波，比特分配和发送功率分配 在噪声较大的时期比位速率小。 由此，可以确保向下游方向的传输容量。

公开(公告)号：US06410998B1

公开(公告)日：2002-06-25

申请号：US09543043

申请日：2000-04-05

申请人： Bernhard Rall

发明人： Bernhard Rall

IPC分类号： H04B330

CPC分类号： H04L25/085 ,  Y10T307/826 ,  Y10T307/858

摘要： A circuit arrangement for reducing interfering longitudinal voltages on a two-wire line includes a reduction circuit for reducing the interfering longitudinal voltages, a detector coupled to the two-wire line that generates a switch-off signal in the absence of a push-pull signal on at least one of the cores in the two-wire line and a switch circuit that switches off the reduction circuit in response to the switch-off signal.

摘要翻译： 用于减少双线线路上的干扰纵向电压的电路装置包括用于减小干扰纵向电压的减小电路，耦合到双线线路的检测器，其在没有推挽信号的情况下产生关断信号 在两线制线路中的至少一个芯线和响应于断开信号而切断还原电路的开关电路。

公开(公告)号：US06804204B2

公开(公告)日：2004-10-12

申请号：US09815131

申请日：2001-03-22

申请人： Claymens Lee ,  Jean-Ming Lee

发明人： Claymens Lee ,  Jean-Ming Lee

IPC分类号： H04B330

CPC分类号： H04B3/23

摘要： An apparatus of a digital echo canceller and method therefor, a designed selector is used values of receiving and input signals to estimate the length of a cable. The response values of an insignificant part of the echo signal can be selected. Multiplication and addition operations are carried out in a response region of a significant part of the echo signal. An estimated echo signal is produced to cancel the echo signal, unnecessary operations and the cost of a hardware can be reduced.

摘要翻译： 数字回声消除器的装置及其方法，设计的选择器使用接收和输入信号的值来估计电缆的长度。 可以选择回波信号无效部分的响应值。 在回波信号的大部分的响应区域中进行乘法和加法运算。 产生估计的回波信号以消除回波信号，可以减少不必要的操作和硬件的成本。

公开(公告)号：US06553005B1

公开(公告)日：2003-04-22

申请号：US09625747

申请日：2000-07-26

申请人： David Skirmont ,  Puneet Agarwal ,  Russ Tuck

发明人： David Skirmont ,  Puneet Agarwal ,  Russ Tuck

IPC分类号： H04B330

CPC分类号： H04L47/2441 ,  H04L45/00 ,  H04L45/245 ,  H04L45/50 ,  H04L45/54 ,  H04L45/742 ,  H04L45/745 ,  H04L47/10 ,  H04L47/125

摘要： A method for routing a packet received in a packet router is taught, the method comprising the steps of selecting a logical interface having multiple physical ports as a destination for the packet, processing any one or more addresses or labels of the packet and other packets received by a common function, producing thereby results unique to the packets in which the addresses and labels processed differ, (c) mapping the physical ports at the destination to the unique results produced by processing the addresses or labels of packets, and (d) routing the data packet according to the mapping. Weighting is applied to physical ports in the mapping, the weighting reflecting different transmission capacities of the ports. Apparatus for practicing the invention is taught as well.

摘要翻译： 该方法包括以下步骤：选择具有多个物理端口的逻辑接口作为分组的目的地，处理分组的任何一个或多个地址或标签以及接收到的其他分组的方法 通过共同功能，产生由处理不同的地址和标签的分组唯一的结果，（c）将目的地的物理端口映射到通过处理分组的地址或标签产生的唯一结果，以及（d）路由 数据包根据映射。 权重在映射中应用于物理端口，加权反映端口的不同传输容量。 还教导了实施本发明的装置。

公开(公告)号：US06369464B1

公开(公告)日：2002-04-09

申请号：US09345017

申请日：1999-07-02

申请人： Robert Schauwecker ,  Pierre-Alain Bovier ,  Daniel M. Eckert ,  Michael Westphal

发明人： Robert Schauwecker ,  Pierre-Alain Bovier ,  Daniel M. Eckert ,  Michael Westphal

IPC分类号： H04B330

CPC分类号： G01R33/421 ,  G01R33/3815

摘要： An actively shielded, superconducting magnet arrangement for the generation of a magnetic field in the direction of a z axis in a working volume arranged about z=0, having a radially inner and a radially outer coaxial coil system, wherein the two coil systems carry the same current and have dipole moments of the same magnitude, but of opposite directions, wherein parts of the radially outer coil system (C2′) are electrically connected in series with the radially inner coil system (C1) and wherein a first superconducting switch (S1) is provided via which during operation a superconducting short circuit of a first current path of the magnet arrangement can be effected, is characterized in that a section (A′) of the radially outer coil system (C2′), which can be superconductingly short-circuited during operation via a further superconducting switch (S2) is arranged symmetrically to the plane z=0 and that the further superconducting current path formed by the superconductingly short-circuited section is inductively decoupled from the other parts of the magnet arrangement connected in series. In this way, undesired side effects like an increase of the magnet drift or uncontrolled charging of the section (distortion with time of homogeneity, possible increase of the stray field, charging up to quenching) are avoided with simple means without the necessity of a current limiter.

摘要翻译： 一种主动屏蔽的超导磁体装置，用于在具有径向内部和径向外部的同轴线圈系统的z = 0左右的工作体积中在z轴方向上产生磁场，其中两个线圈系统携带相同的 电流并且具有相同大小但具有相反方向的偶极矩，其中径向外部线圈系统（C2'）的部分与径向内部线圈系统（C1）串联电连接，并且其中第一超导开关（S1） 被提供用于在操作期间可以实现磁体布置的第一电流路径的超导短路，其特征在于，径向外部线圈系统（C2'）的部分（A'）可以是超导短路的， 通过另外的超导开关（S2）在操作期间电路被布置成对称于平面z = 0，并且由超导短路形成的另外的超导电流路径 磁体部分与串联连接的磁体装置的其他部分电感去耦。 以这种方式，通过简单的方法避免了不期望的副作用，例如磁体漂移的增加或部分的不受控制的充电（具有均匀性的时间的变形，杂散场的可能增加，充电到淬火），而不需要电流 限制器