公开(公告)号：US08294501B1

公开(公告)日：2012-10-23

申请号：US13035331

申请日：2011-02-25

Applicant: Christopher Thomas ,  Yanggao Qiu ,  Junling Zang ,  Wei Fu

Inventor： Christopher Thomas ,  Yanggao Qiu ,  Junling Zang ,  Wei Fu

IPC: H03H11/16

CPC classification number: H03L7/081 ,  H03L7/099 ,  H03L7/197

Abstract: Systems and methods are disclosed for improving the accuracy of phase spacing of multiphase clocks. In one example, method includes receiving a reference clock having a first frequency and sampling the reference clock with a plurality of multiphase clocks having a second frequency to generate a plurality of samples. The second frequency is a non-integer multiple of the first frequency. The method also includes detecting transitions of the reference clock occurring between the samples generated from a plurality of pairs of the multiphase clocks and counting the transitions to generate a transition count for each pair of the multiphase clocks. The method also includes summing a set of the transition counts to generate a measured phase for a first multiphase clock, calculating a reference phase for the first multiphase clock, and generating a phase skew value for the first multiphase clock based on the measured phase and the reference phase.

Abstract translation: 公开了用于提高多相时钟相位精度的系统和方法。 在一个示例中，方法包括接收具有第一频率的参考时钟并且用具有第二频率的多个多相时钟采样参考时钟以产生多个采样。 第二频率是第一频率的非整数倍。 该方法还包括检测在从多对多相时钟产生的样本之间发生的参考时钟的转变，并对转换进行计数，以产生每对多相时钟的转换计数。 该方法还包括对一组转换计数求和以产生第一多相时钟的测量相位，计算第一多相时钟的参考相位，以及基于测量相位和第一多相时钟产生第一多相时钟的相位偏移值 参考阶段。

公开(公告)号：US08244141B2

公开(公告)日：2012-08-14

申请号：US12564716

申请日：2009-09-22

Applicant: Wei Fu ,  Zhihui Tao ,  Yue Liu ,  Jia Jia

Inventor： Wei Fu ,  Zhihui Tao ,  Yue Liu ,  Jia Jia

IPC: H04B10/12 ,  H04B10/00 ,  H04B10/04

CPC classification number: H04B10/25137 ,  H04B10/5053 ,  H04B10/5162 ,  H04B10/5165 ,  H04B2210/254

Abstract: An apparatus for generating a dispersion compensation signal includes a splitting module for splitting a data signal to be transmitted into N channels of data signals; N pre-processing modules for adjusting in frequency domain the phases and amplitudes of the N channels of data signals and outputting N channels of pre-warped electrical signals; an optical carrier generating module for generating N channels of coherent optical carriers; N electro-optic modulators for modulating the N channels of coherent optical carriers based on the N channels of pre-warped electrical signals and generating N channels of pre-warped optical signals; an optical coupling module for coupling the N channels of pre-warped optical signals into a dispersion compensation optical signal. By pre-processing the data signals, the present disclosure may allow the use of existing devices to generate a dispersion compensation signal so that the bandwidth requirement set by prior art on the electrical device is reduced.

Abstract translation: 一种用于产生色散补偿信号的装置包括分割模块，用于将要发送的数据信号分割成N个数据信号通道; N个预处理模块，用于在频域中调节N个通道的数据信号的相位和幅度，并输出N个预失真的电信号; 一个用于产生N个相干光载波信道的光载波产生模块; N个电光调制器，用于基于N个预弯曲电信号通道调制相干光载波的N个信道并产生N个预弯曲光信号; 光耦合模块，用于将N个预弯曲光信号的N个通道耦合到色散补偿光信号中。 通过预处理数据信号，本公开可以允许使用现有设备来产生色散补偿信号，从而减少现有技术在电气设备上设置的带宽需求。

公开(公告)号：US08229298B2

公开(公告)日：2012-07-24

申请号：US12269502

申请日：2008-11-12

Applicant: Yue Liu ,  Lijun Li ,  Zhihui Tao ,  Wei Fu

Inventor： Yue Liu ,  Lijun Li ,  Zhihui Tao ,  Wei Fu

IPC: H04B10/08

CPC classification number: H04B10/07951

Abstract: The present invention discloses a method for detecting dispersion, overcoming disadvantages of complex configuration and insensitivity to a tiny dispersion of the method and device for detecting dispersion in the prior art. The inventive method includes: obtaining a signal within a predetermined bandwidth range from an optical signal received; obtaining an operated value of power via an operation on the signal within the predetermined bandwidth range; and obtaining amount of system dispersion according to a corresponding relation between the operated value of power and the amount of system dispersion. A device for detecting dispersion is disclosed, including a photoelectric filter operational unit and a processing unit, where an output of the photoelectric filter operational unit is connected to an input of the processing unit. The device for detecting dispersion of the present invention is applicable to an adaptive dispersion compensation system. An optical signal transmission system is further disclosed.

Abstract translation: 本发明公开了一种检测色散的方法，克服了现有技术中用于检测色散的方法和装置的微分散的复杂配置和不敏感的缺点。 本发明的方法包括：从接收的光信号获得在预定带宽范围内的信号; 通过对所述预定带宽范围内的信号进行操作来获得功率的操作值; 并根据操作的功率值和系统色散量之间的对应关系获得系统色散量。 公开了一种用于检测色散的装置，包括光电过滤器操作单元和处理单元，其中光电过滤器操作单元的输出连接到处理单元的输入。 用于检测本发明的色散的装置可应用于自适应色散补偿系统。 进一步公开了一种光信号传输系统。

公开(公告)号：US08175207B2

公开(公告)日：2012-05-08

申请号：US12539516

申请日：2009-08-11

Applicant: Viet Linh Do ,  Wei Fu

Inventor： Viet Linh Do ,  Wei Fu

IPC: H04L7/00 ,  H04L25/00 ,  H04L25/40

CPC classification number: H04L7/033

Abstract: An inter-symbol interference (ISI) pattern-weighted early-late phase detector is provided. I and Q clocks are generated. The I clock frequency is divided by n, creating a reference clock. A serial data stream is sequentially sampled with the I clock, and with Q clocks having fixed and varied phase delays from the I clock, creating digital I-bit and Q-bit values. The I-bit values and Q-bit values are segmented into n-bit digital words. I clock phase corrections are identified and a modulation factor is determined in response to comparing Q-bit values sampled by the varied delay Q clock. Also identified are bit sequence patterns associated with each I-bit value. Each I-bit value is weighted in response to the identified bit sequence pattern and the identified I clock phase correction. The modulation factor is applied to the weighted average, and I and Q clock phase error signal are generated.

Abstract translation: 提供符号间干扰（ISI）模式加权早期相位检测器。 生成I和Q时钟。 I时钟频率除以n，创建参考时钟。 串行数据流用I时钟顺序采样，并且具有来自I时钟的固定和变化的相位延迟的Q个时钟，产生数字I位和Q位值。 I位值和Q位值被分段为n位数字字。 I时钟相位校正被识别，并且响应于比较由变化的延迟Q时钟采样的Q比特值来确定调制因子。 还标识了与每个I比特值相关联的比特序列模式。 响应于所识别的比特序列模式和所识别的I时钟相位校正，对每个I比特值进行加权。 调制因子被应用于加权平均值，产生I和Q时钟相位误差信号。

公开(公告)号：US07701847B2

公开(公告)日：2010-04-20

申请号：US11247312

申请日：2005-10-11

Applicant: Hong Chen ,  Chunfan Hou ,  Wei Fu ,  Jun Yan

Inventor： Hong Chen ,  Chunfan Hou ,  Wei Fu ,  Jun Yan

IPC: H04J1/16 ,  H04L1/00 ,  H04L12/26

CPC classification number: H04J14/0297 ,  H04J14/029 ,  H04L1/20 ,  H04L1/22

Abstract: Disclosed is an inter-card channel protection method in a wave-length division multiplexing system. At the transmitting end, signals from the client side are divided via a coupler into two paths which are delivered to two cards, respectively. The two paths of signal transmitted by the two cards are sent via different routes to the receiving end. At the receiving end, the two paths of signal enter two cards, respectively, and the two cards communicate with each other directly. The standby card submits the signal quality detected by a detecting device to the primary card. The switching control unit on the primary card issues the commands of switching on/off the client-side lasers to the standby card in accordance with a decision made. One of the client-side lasers on the primary card and standby card is switched on while the other is switched off. The merits of this method include: protection can be realized with failures of card or essential chips thereon; protection switching can still be conducted with failures of system control unit; and, direct transfer of switching conditions and switching commands between the two cards is faster than communications with a system control unit via mailbox respectively.

Abstract translation: 公开了一种波长分割复用系统中的卡间信道保护方法。 在发送端，来自客户端的信号通过耦合器被分成两个路径，分别被传送到两个卡。 由两个卡发送的信号的两条路径通过不同的路由发送到接收端。 在接收端，信号的两条路径分别进入两个卡，两个卡直接相互通信。 备用卡将检测装置检测到的信号质量提交给主卡。 主卡上的切换控制单元根据作出的决定发出将客户侧激光器切换到备用卡的命令。 主卡和备用卡上的客户端激光器之一被打开，而另一个被关闭。 该方法的优点包括：可以通过卡片或必要芯片的故障来实现保护; 系统控制单元故障仍然可以进行保护切换; 并且两个卡之间的切换条件和切换命令的直接传送分别比通过邮箱与系统控制单元的通信更快。

公开(公告)号：US20080239969A1

公开(公告)日：2008-10-02

申请号：US10591514

申请日：2006-01-28

Applicant: Jianfei He ,  Chaogang Lu ,  Wei Fu ,  Xingque Quan ,  Xiaodong Li

Inventor： Jianfei He ,  Chaogang Lu ,  Wei Fu ,  Xingque Quan ,  Xiaodong Li

IPC: H04L12/24 ,  H04L12/28

CPC classification number: H04L45/00 ,  H04L45/24 ,  H04L45/28 ,  H04L45/502 ,  H04L47/10 ,  H04L69/14

Abstract: The present invention discloses a method for data forwarding used in label switching networks, with which, at the source node, sequence numbers are added to the data packets forming an original data flow to be forwarded according to the forwarding order, then the data packets are mapped to label switched paths (LSP) for forwarding; at the destination node, the data packets received from the LSPs are merged into the same data flow as the original data flow to be forwarded according to the order of the sequence numbers. Meanwhile, during the data forwarding in accordance with the invention, an alarm mechanism is used to detect a faulted LSP, and the mapping strategy is adjusted timely to avoid the massive loss of the data packets, which guarantees the security of the data forwarding to the greatest extent while a high bandwidth utilization ratio is ensured.

Abstract translation: 本发明公开了一种在标签交换网络中使用的数据转发方法，在源节点将序列号添加到根据转发顺序形成要转发的原始数据流的数据包，然后数据包为 映射到标签交换路径（LSP）进行转发; 在目的地节点处，从LSP接收到的数据分组被合并为与根据序列号顺序转发的原始数据流相同的数据流。 同时，在根据本发明的数据转发期间，使用报警机制来检测故障LSP，并且及时调整映射策略，以避免数据分组的大量丢失，保证数据转发的安全性 最大程度上确保了高带宽利用率。

公开(公告)号：US20080112330A1

公开(公告)日：2008-05-15

申请号：US11574376

申请日：2006-03-29

Applicant: Jianfei He ,  Xiaodong Li ,  Xingyue Quan ,  Wei Fu ,  Chaogang Lu

Inventor： Jianfei He ,  Xiaodong Li ,  Xingyue Quan ,  Wei Fu ,  Chaogang Lu

IPC: H04L12/26 ,  H04L12/56

CPC classification number: H04L47/10 ,  H04L41/00 ,  H04L45/50

Abstract: Embodiments of the present invention disclose a method of domain supervision in a label switched network, including designating one or more OAM domains on an LSP in the label switched network, determining an ingress node and an egress node of each OAM domain inserting in-domain OAM frames containing supervision information at the ingress node of each OAM domain, receiving and parsing the in-domain OAM frames by the egress node of each OAM domain, and managing an OAM domain according to the supervision information contained in an in-domain OAM frame of the OAM domain. Furthermore, embodiments of the present invention also disclose a method of domain protection in a label switched network through adding a detection frame, such as Connectivity Verification (CV) frame, Fast Failure Detection (FFD) frame or the like, into an in-domain OAM frame.

Abstract translation: 本发明的实施例公开了一种在标签交换网络中进行域监督的方法，包括在标签交换网络中的LSP上指定一个或多个OAM域，确定每个OAM域的入口节点和出口节点插入域内OAM 在每个OAM域的入口节点处包含监控信息的帧，由每个OAM域的出口节点接收和解析域内OAM帧，以及根据包含在域内OAM帧中的监控信息来管理OAM域 OAM域。 此外，本发明的实施例还公开了在标签交换网络中通过将诸如连通性验证（CV）帧，快速失败检测（FFD）帧等的检测帧添加到域中的域保护的方法 OAM框架。

公开(公告)号：US20070179184A1

公开(公告)日：2007-08-02

申请号：US10581230

申请日：2004-12-03

Applicant: Jakob Busch-Petersen ,  Jian Jin ,  Michael Palovich ,  Wei Fu

Inventor： Jakob Busch-Petersen ,  Jian Jin ,  Michael Palovich ,  Wei Fu

IPC: A61K31/454 ,  A61K31/445 ,  A61K31/522 ,  A61K31/52 ,  A61K31/502 ,  A61K31/517 ,  A61K31/53

CPC classification number: C07D405/12 ,  A61K9/0075 ,  C07D401/12 ,  C07D413/12 ,  C07D417/12

Abstract: Muscarinic Acetylcholine receptor antagonists and methods of using them are provided.

公开(公告)号：US20070179180A1

公开(公告)日：2007-08-02

申请号：US10581229

申请日：2004-12-03

Applicant: Jakob Busch-Petersen ,  Jian Jin ,  Michael Palovich ,  Wei Fu

Inventor： Jakob Busch-Petersen ,  Jian Jin ,  Michael Palovich ,  Wei Fu

IPC: A61K31/4709 ,  A61K31/454 ,  A61K31/4545 ,  A61K31/453 ,  A61K31/452 ,  C07D409/02 ,  C07D405/02 ,  C07D403/02 ,  C07D401/02

CPC classification number: C07D211/56 ,  C07D215/36 ,  C07D263/46 ,  C07D277/44 ,  C07D317/46 ,  C07D333/34 ,  C07D401/12 ,  C07D405/06 ,  C07D409/02 ,  C07D409/14 ,  C07D413/12 ,  C07D417/14

Abstract: Muscarinic Acetylcholine receptor antagonists and methods of using them are provided.

Abstract translation: 提供毒蕈碱性乙酰胆碱受体拮抗剂及其使用方法。

公开(公告)号：US20050178237A1

公开(公告)日：2005-08-18

申请号：US10780131

申请日：2004-02-18

Applicant: Wei Fu

Inventor： Wei Fu

IPC: F16C3/04

CPC classification number: F16C3/04 ,  Y10T74/18544 ,  Y10T74/2173

Abstract: A drive crank shaft and a load shaft with an eccentrically placed center shaft coupler form a mechanical torque transferring structure. Two convoluted rubber seals mounted on a center shaft coupler, a drive shaft support an a load shaft support enclose the working fluid to form double hermetic sealing. The rubber seals exert enough force against twisting to hold the center shaft coupler and prevent the center shaft coupler from rotating around its center. Two balance weights are mounted on both crank shafts symmetrically to eliminate vibration due to eccentric configuration. An enclosed housing prevents fluid from leaking into the environment. A sensor is used to detect the leakage and control the operation. This rotary shaft sealing device provides dynamically hermetic sealing by eliminating a leaking path for the pressurized working fluid.

Abstract translation: 驱动曲柄轴和具有偏心放置的中心轴联接器的负载轴形成机械扭矩传递结构。 安装在中心轴联接器上的两个卷积橡胶密封件，支撑负载轴支撑的驱动轴围绕工作流体形成双重密封。 橡胶密封圈施加足够的力以扭转以保持中心轴联接器，并防止中心轴联接器绕其中心旋转。 两个平衡重对称安装在两个曲轴上，以消除偏心构造造成的振动。 封闭的外壳防止流体泄漏到环境中。 传感器用于检测泄漏并控制操作。 该旋转轴密封装置通过消除加压工作流体的泄漏路径来提供动态的气密密封。