利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

45 条记录 (耗时 0.027 秒)

    Synchronization of distributed cable modem network components
    23.
    发明申请
    Synchronization of distributed cable modem network components 有权
    分布式电缆调制解调器网络组件的同步

    公开(公告)号：US20060056461A1

    公开(公告)日：2006-03-16

    申请号：US11061147

    申请日：2005-02-18

    申请人： Bruce Currivan ,  Alexander MacInnis ,  Thomas Kolze ,  Richard Prodan

    发明人： Bruce Currivan ,  Alexander MacInnis ,  Thomas Kolze ,  Richard Prodan

    IPC分类号： H04J3/06

    CPC分类号： H04J3/0682

    摘要： A distributed cable modem termination system of the present invention includes a downstream transmitter hub, an upstream receiver hub, and a head end that communicatively couples to the downstream transmitter hub and to the upstream receiver hub via a packet data network. The head end and the downstream transmitter hub are operable to synchronize a clock of the downstream transmitter hub with a clock of the head end. Further, the upstream receiver hub and the downstream transmitter hub are operable to synchronize a clock of the upstream receiver hub with the clock of the downstream transmitter hub. Clock synchronization between the upstream receiver hub and the downstream transmitter hub are performed using ranging operations supported by at least one cable modem communicatively coupled to both the upstream receiver hub and the downstream transmitter hub via cable modem network plant.

    摘要翻译： 本发明的分布式电缆调制解调器终端系统包括下行发射机集线器，上游接收集线器和头端，其通过分组数据网络通信耦合到下游发射机集线器和上游接收集线器。 头端和下游发射器集线器可操作以使下游发射器集线器的时钟与头端的时钟同步。 此外，上游接收器集线器和下游发射器集线器可操作以将上游接收器集线器的时钟与下游发射器集线器的时钟同步。 上游接收器集线器和下游发射器集线器之间的时钟同步使用通过电缆调制解调器网络设备通信地耦合到上游接收器集线器和下游发射机集线器的至少一个电缆调制解调器支持的测距操作来执行。

    System and method for adjusting multiple control loops using common criteria
    25.
    发明申请
    System and method for adjusting multiple control loops using common criteria 有权
    使用常用标准调整多个控制回路的系统和方法

    公开(公告)号：US20050271137A1

    公开(公告)日：2005-12-08

    申请号：US10879673

    申请日：2004-06-29

    申请人： Thomas Kolze ,  Bruce Currivan ,  Afshin Momtaz

    发明人： Thomas Kolze ,  Bruce Currivan ,  Afshin Momtaz

    IPC分类号： H04L25/03 ,  H04B1/10

    CPC分类号： H04L25/03006 ,  H04L7/033

    摘要： Data error such as mean square error may be reduced in a system such as a communication receiver using a dithering algorithm that adjusts one or more parameters in the system. The dithering algorithm may be applied to more than one parameter in a nested manner. The dithering algorithm may be modified to immediately check the MSE after a parameter has been adjusted.

    摘要翻译： 在诸如使用调整系统中的一个或多个参数的抖动算法的通信接收机的系统中，诸如均方误差之类的数据误差可能会降低。 抖动算法可以以嵌套方式应用于多个参数。 可以修改抖动算法，以便在调整参数后立即检查MSE。

    METHOD AND SYSTEM FOR DIGITAL VIDEO BROADCAST FOR CABLE (DVB-C2)
    27.
    发明申请
    METHOD AND SYSTEM FOR DIGITAL VIDEO BROADCAST FOR CABLE (DVB-C2) 有权
    数字视频广播用于电缆（DVB-C2）的方法和系统

    公开(公告)号：US20090122874A1

    公开(公告)日：2009-05-14

    申请号：US12269865

    申请日：2008-11-12

    申请人： Thomas Kolze ,  Robbert van der Wal ,  Bruce Currivan

    发明人： Thomas Kolze ,  Robbert van der Wal ,  Bruce Currivan

    IPC分类号： H04N11/02

    CPC分类号： H04N21/63 ,  H04H20/69 ,  H04H20/78

    摘要： Methods and systems for DVB-C2 are disclosed and may include receiving data encoded utilizing variable encoding, variable modulation and outer codes via a physical layer matched to a desired quality of service. An error probability may be determined for said received data and retransmission of portions of said data with error probability above an error threshold may be requested. The variable modulation may include single carrier modulation, orthogonal frequency division modulation, synchronous code division multiple access, and/or from 256 QAM to 2048 QAM or greater. The variable encoding may include forward error correction code, which may include low density parity check code.

    摘要翻译： 公开了DVB-C2的方法和系统，并且可以包括通过与期望的服务质量匹配的物理层来接收利用可变编码，可变调制和外部码编码的数据。 可以针对所述接收的数据确定错误概率，并且可以请求误差概率高于误差阈值的所述数据的部分的重传。 可变调制可以包括单载波调制，正交频分调制，同步码分多址，和/或从256QAM到2048QAM或更大。 可变编码可以包括前向纠错码，其可以包括低密度奇偶校验码。

    Detection and mitigation of temporary impairments in a communications channel
    28.
    发明申请
    Detection and mitigation of temporary impairments in a communications channel 失效
    检测和缓解通信信道中的临时损伤

    公开(公告)号：US20080098287A1

    公开(公告)日：2008-04-24

    申请号：US12001316

    申请日：2007-12-11

    申请人： Thomas Kolze ,  Bruce Currivan ,  Jonathan Min

    发明人： Thomas Kolze ,  Bruce Currivan ,  Jonathan Min

    IPC分类号： G06F11/08 ,  H04L27/00

    CPC分类号： H04L1/005 ,  H04B1/71 ,  H04B1/7102 ,  H04B1/7103 ,  H04B1/71055 ,  H04B1/71072 ,  H04B2201/709709 ,  H04L1/0009 ,  H04L1/0045 ,  H04L1/0057 ,  H04N21/6168

    摘要： Systems and methods are disclosed for detecting temporary high level impairments, such as noise or interference, for example, in a communications channel, and subsequently, mitigating the deleterious effects of the dynamic impairments. In one embodiment, the method not only performs dynamic characterization of channel fidelity against impairments, but also uses this dynamic characterization of the channel fidelity to adapt the receiver processing and to affect an improvement in the performance of the receiver. For example, in this embodiment, the method increases the accuracy of the estimation of the transmitted information, or similarly, increases the probability of making the correct estimates of the transmitted information, even in the presence of temporary severe levels of impairment. The channel fidelity history may also be stored and catalogued for use in, for example, future optimization of the transmit waveform.

    摘要翻译： 公开了用于检测临时高级损伤（例如噪声或干扰）的系统和方法，例如在通信信道中，并且随后减轻动态损伤的有害影响。 在一个实施例中，该方法不仅执行对损伤的信道保真度的动态表征，而且还使用信道保真度的动态表征来适应接收机处理并影响接收机性能的改善。 例如，在本实施例中，该方法提高了所发送信息的估计的准确性，或者类似地，即使存在临时严重的损伤水平，也增加了发送信息的正确估计的可能性。 信道保真度历史也可以存储和编目，以用于例如发射波形的未来优化。

    System and method of uncorrelated code hopping in a communications system
    30.
    发明申请
    System and method of uncorrelated code hopping in a communications system 失效
    通信系统中不相关跳码的系统和方法

    公开(公告)号：US20070061642A1

    公开(公告)日：2007-03-15

    申请号：US11489538

    申请日：2006-07-20

    申请人： Bruce Currivan ,  Thomas Kolze ,  Kevin Miller ,  Richard Prodan ,  Jonathan Min

    发明人： Bruce Currivan ,  Thomas Kolze ,  Kevin Miller ,  Richard Prodan ,  Jonathan Min

    IPC分类号： G01R31/28

    CPC分类号： H04B1/69 ,  H04J13/0074

    摘要： A system and method are used to provide uncorrelated code hopping in a communications system. A multi-bit linear shift register receives data and clocks the data fifteen times. A word assembler receives the shifted data and outputs a fifteen bit word. A mixer mixes the fifteen bit word with an numerical value of active codes to generate a mixed signal. A divider divides the mixed signal to produce a divided signal. A truncator truncates the divided signal to its seven most significant bits to produce a pseudo random hop number. A code matrix shifter circularly shifts the active codes in a code matrix based on the pseudo random hop number to produce a circularly shifted code. A transmitter transmits the circularly shifted code matrix.

    摘要翻译： 系统和方法用于在通信系统中提供不相关的跳码。 多位线性移位寄存器接收数据并对数据进行十五次计时。 字汇编器接收移位数据并输出十五位字。 混频器将十五位字与有效码的数值混合以产生混合信号。 分频器分割混合信号以产生分频信号。 截断器将分割的信号截断为其七个最高有效位以产生伪随机跳数。 码矩阵移位器基于伪随机跳数循环移位代码矩阵中的活动代码，以产生循环移位代码。 发射机发送循环移位码矩阵。