Line-powered network interface device
    1.
    发明授权
    Line-powered network interface device 有权
    线路供电网络接口设备

    公开(公告)号:US07239628B1

    公开(公告)日:2007-07-03

    申请号:US10136508

    申请日:2002-05-01

    CPC classification number: H04L12/10 H04M11/062

    Abstract: A network interface device includes a first interface, a power extractor, a transceiver, and a second interface. The first interface receives a signal that includes both power and packetized information. The power extractor extracts the power from the signal and powers the transceiver. The transceiver extracts the packetized information from the signal and communicates the information to a user device using the second interface.

    Abstract translation: 网络接口设备包括第一接口,功率提取器,收发器和第二接口。 第一个接口接收包含功率和分组信息的信号。 电源提取器从信号中提取电源并为收发器供电。 收发器从信号中提取分组信息,并使用第二接口将信息传送到用户设备。

    Method and apparatus for updating carrier channel allocations
    2.
    发明授权
    Method and apparatus for updating carrier channel allocations 失效
    用于更新载波信道分配的方法和装置

    公开(公告)号:US5521906A

    公开(公告)日:1996-05-28

    申请号:US378846

    申请日:1995-01-26

    Abstract: In a communication system that utilizes DMT technology to couple a primary site (102) to a plurality of secondary sites (104-108), carrier channel allocations may be updated as follows. At periodic intervals, the primary site requests updating bit loading information from the secondary sites. Upon receiving the updated bit loading information, the primary site (102) determines an updated call bit loading table for each active call. From this, the primary site (102) determines whether current carrier channel allocation provides sufficient bandwidth. When the current carrier channel allocation does not provide the sufficient bandwidth, the primary site modifies the current carrier channel allocation to meet the bandwidth requirements.

    Abstract translation: 在利用DMT技术将主站点(102)耦合到多个次要站点(104-108)的通信系统中,可以如下更新载波信道分配。 在主要站点周期性地,请求从次要站点更新位加载信息。 一旦接收到更新的位加载信息,主站点(102)为每个活动呼叫确定更新的呼叫位加载表。 由此,主站点(102)确定当前载波信道分配是否提供足够的带宽。 当当前载波信道分配不能提供足够的带宽时,主站修改当前载波信道分配以满足带宽要求。

    System and method for reliably communicating telecommunication information
    3.
    发明授权
    System and method for reliably communicating telecommunication information 有权
    电信信息可靠通信的系统和方法

    公开(公告)号:US06996134B1

    公开(公告)日:2006-02-07

    申请号:US09906914

    申请日:2001-07-16

    Abstract: A method reliably communicates content for multiple subscriber lines via a single physical transmission medium between a telecommunication gateway and equipment at a customer location. In that method, content for two or more subscriber lines of the customer location is received and converted into packetized data for network communications and/or multiplexed to form an added-main-line (AML) signal that includes power. The packetized data or the AML signal is communicated between the customer location and the telecommunication gateway via the single physical transmission medium. External power can be used to extract the content for the two or more subscriber lines from the packetized data in a primary mode of operation, and the power from the AML signal can be used to extract the content for the two or more subscriber lines from the AML signal in a backup mode of operation.

    Abstract translation: 方法通过电信网关和客户位置的设备之间的单个物理传输介质可靠地传送多个用户线的内容。 在该方法中,客户位置的两个或多个用户线的内容被接收并转换成用于网络通信的分组数据和/或多路复用以形成包括功率的附加主线(AML)信号。 分组数据或AML信号经由单个物理传输介质在客户位置和电信网关之间进行通信。 可以使用外部功率从主要操作模式中的分组化数据中提取两个或多个用户线路的内容,并且来自AML信号的功率可以用于从两个或更多个用户线路的内容中提取 AML信号处于备用操作模式。

    Method for allocating data and power in a discrete, multi-tone communication system
    4.
    发明授权
    Method for allocating data and power in a discrete, multi-tone communication system 失效
    用于在离散的多音通信系统中分配数据和功率的方法

    公开(公告)号:US06275522B1

    公开(公告)日:2001-08-14

    申请号:US09007390

    申请日:1998-01-14

    CPC classification number: H04L27/2608

    Abstract: In the present invention, an ADSL system (10) identifies good bin as a bin capable of successfully transmitting data to a destination. A bad bin is identified as a carrier that is not capable of successfully transmitting data to the destination. A marginal bin is identified as a carrier that may be capable of transmitting data to the destination. The power to a bad bin is reduced and allocated to the marginal or good bin(s) to allow an increased bit rate. In another embodiment, the power to marginal bin is reduced and allocated to the good bin(s).

    Abstract translation: 在本发明中,ADSL系统(10)识别出能够成功地将数据发送到目的地的bin的好的bin。 一个坏的垃圾箱被识别为不能成功传送数据到目的地的载体。 边缘垃圾箱被识别为可以向目的地发送数据的载体。 减少对坏垃圾箱的电力并将其分配给边缘或好的仓,以允许增加的比特率。 在另一个实施例中,边缘垃圾箱的功率被减少并分配给好的垃圾箱。

    Method and apparatus for echo cancellation updates in a multicarrier transceiver system
    6.
    发明授权
    Method and apparatus for echo cancellation updates in a multicarrier transceiver system 有权
    用于多载波收发器系统中的回波消除更新的方法和装置

    公开(公告)号:US06781965B1

    公开(公告)日:2004-08-24

    申请号:US09543866

    申请日:2000-04-05

    CPC classification number: H04B3/23 H04L27/2626 H04L27/2647

    Abstract: A simple fast and robust echo canceller for both synchronous and asynchronous multicarrier transceiver systems. A first residual time domain echo component is separated from a receive signal in a first frame and a second residual time domain echo component is separated from a receive signal in the next consecutive frame. The first and second residual time domain echo components from consecutive frames are combined to obtain a combined residual time domain echo component. The combined residual time domain echo component is used to adaptively update coefficients in a transfer function representing an estimate of the echo channel in the multicarrier transceiver system. The separation of the echo components from the receive signal eliminates dependence on the receive signal so that convergence is substantially faster and not signal dependent. Performance of the echo canceller is virtually independent of the receive signal and allows reliable tracking of changes in the echo channel over time.

    Abstract translation: 一种用于同步和异步多载波收发器系统的简单快速且可靠的回波消除器。 第一残余时域回波分量与第一帧中的接收信号分离,并且第二剩余时域回波分量与下一连续帧中的接收信号分离。 来自连续帧的第一和第二剩余时域回波分量被组合以获得组合的残余时域回波分量。 组合的残余时域回波分量用于自适应地更新表示多载波收发机系统中的回波信道的估计的传递函数中的系数。 回波分量与接收信号的分离消除了对接收信号的依赖性,使得收敛基本上更快并且不依赖于信号。 回波消除器的性能实际上与接收信号无关,并允许可靠跟踪回波信道随时间的变化。

    Apparatus and method for clock recovery in a communication system
    8.
    发明授权
    Apparatus and method for clock recovery in a communication system 失效
    通信系统中时钟恢复的装置和方法

    公开(公告)号:US5898744A

    公开(公告)日:1999-04-27

    申请号:US722433

    申请日:1996-10-07

    CPC classification number: H04J3/07 H04J3/0632

    Abstract: A method for recovering the clock in an ADSL (asymmetric digital subscriber line) communication system at the receiver to match the frequency of the transmitted signal. A digital phase locked loop (DPLL) based clock is used to adjust the frequency of data read accesses from a FIFO (first-in first-out) memory (26) in a transceiver unit. The frequency is adjusted according to a predetermined offset value, where the offset value indicates the relative difference between a read location in the FIFO memory (26) and a write location. The predetermined offset value defines an operating point or nominal data location in the FIFO memory (26). A FIFO phase detector (31) determines and affects the frequency adjustment to maintain the FIFO memory at approximately the operating point. One embodiment provides clock recovery for a received ADSL subchannel and a means to recover a 16 kHz clock for a channel control.

    Abstract translation: 一种用于在接收机处恢复ADSL(非对称数字用户线路)通信系统中的时钟以匹配发送信号的频率的方法。 基于数字锁相环(DPLL)的时钟用于调整收发器单元中FIFO(先进先出)存储器(26)的数据读取访问频率。 根据预定偏移值来调整频率,其中偏移值指示FIFO存储器(26)中的读取位置与写入位置之间的相对差。 预定偏移值定义FIFO存储器(26)中的工作点或标称数据位置。 FIFO相位检测器(31)确定并影响频率调整,以将FIFO存储器保持在大约工作点。 一个实施例提供了用于接收的ADSL子信道的时钟恢复和用于恢复用于信道控制的16kHz时钟的装置。

    Flexible asymmetrical digital subscriber line ADSL transmitter, remote
terminal using same, and method therefor
    9.
    发明授权
    Flexible asymmetrical digital subscriber line ADSL transmitter, remote terminal using same, and method therefor 失效
    灵活的非对称数字用户线ADSL发射机,远程终端使用相同,及其方法

    公开(公告)号:US5781728A

    公开(公告)日:1998-07-14

    申请号:US616819

    申请日:1996-03-15

    Abstract: A flexible asymmetrical digital subscriber line (ADSL) transmitter is able to operate simultaneously with integrated services digital network (ISDN) terminal equipment (TE) using a common telephone line (18). The ADSL transmitter changes the frequency content of a frequency-encoded ADSL signal (104) so that its frequency content does not overlap the frequency content of the ISDN TE signal. A corresponding ADSL receiver located within a central office (CO) adapts to the changed frequency content, allowing the ADSL signal to be transmitted over the telephone line without substantial loss of signal integrity. In one embodiment, an ADSL transmitter (100) converts ADSL symbols making up the frequency-encoded ADSL signal (104) into a corresponding time domain signal. The transmitter (100) then interpolates the time domain signal and high pass filters the interpolated signal. This high pass filtered signal is then converted to analog form, bandpass filtered, and driven onto the telephone line (18).

    Abstract translation: 灵活的非对称数字用户线(ADSL)发射机能够使用公用电话线(18)与综合业务数字网(ISDN)终端设备(TE)同时工作。 ADSL发射机改变频率编码ADSL信号(104)的频率内容,使其频率内容不与ISDN TE信号的频率内容重叠。 位于中心局(CO)内的对应的ADSL接收机适应于改变的频率内容,允许ADSL信号通过电话线传输,而不会显着损失信号完整性。 在一个实施例中,ADSL发射机(100)将构成频率编码的ADSL信号(104)的ADSL符号转换成对应的时域信号。 然后,发射机(100)内插时域信号,并对内插信号进行高通滤波。 然后将该高通滤波信号转换为模拟形式,经过滤波,并被驱动到电话线路(18)上。

    Method and apparatus for providing infrastructure call support
    10.
    发明授权
    Method and apparatus for providing infrastructure call support 失效
    提供基础设施通话支持的方法和设备

    公开(公告)号:US5682419A

    公开(公告)日:1997-10-28

    申请号:US378852

    申请日:1995-01-26

    CPC classification number: H04M11/06 H04L27/2608 H04W92/12

    Abstract: In a communication system that employs DMT technology to couple a primary site (102) to a plurality of secondary sites (104-108), call support infrastructure is obtained as follows. Having received a call request, the primary site (102) identifies targeted subscribers and target secondary sites, i.e., the secondary sites having a targeted subscriber affiliated therewith. Next, the primary site determines a call bit loading table from the site bit loading tables of the target secondary sites. Having done this, the primary site selects, based on bandwidth requirements of the call, at least one carrier channel to provide the infrastructure support for the call.

    Abstract translation: 在采用DMT技术将主站点(102)耦合到多个次要站点(104-108)的通信系统中,获得呼叫支持基础设施如下。 接收到呼叫请求后,主站点(102)识别目标用户和目标辅助站点,即具有与其相关联的目标用户的辅助站点。 接下来,主站点从目标辅助站点的站点位加载表确定调用位加载表。 完成此操作后,主站点将根据呼叫的带宽要求选择至少一个运营商频道,为呼叫提供基础架构支持。

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