公开(公告)号：US20140070734A1

公开(公告)日：2014-03-13

申请号：US13699810

申请日：2012-09-09

申请人： James Aweya ,  Nayef AlSindi

发明人： James Aweya ,  Nayef AlSindi

IPC分类号： H02P29/00 ,  H02P5/46

CPC分类号： H02P5/46 ,  H02P5/74 ,  H02P23/22

摘要： This invention relates to methods and devices for motor speed control. The invention has particular application in the control of motors over packet networks. In embodiments of the invention, phase-locked loop principles are used to remotely control the speed of an electric motor over a packet network. The setpoint for the motor is supplied by arriving timestamps from a speed-mapped variable frequency source. The shaft speed of the motor is measured with a tachometer with its output proportional to the motor speed. Any deviation of the actual speed from the setpoint is amplified by the power amplifier whose output drives the motor. Speed control over packet networks allow smoother operation of a process, acceleration control, different operating speeds for each process recipe, compensation for changing process variables, slow operation for setup purposes, adjustments to the rate of production, accurate positioning, and control torque or tension of a system.

摘要翻译： 本发明涉及电机速度控制的方法和装置。 本发明特别适用于通过分组网络控制电动机。 在本发明的实施例中，使用锁相环原理来远程控制分组网络上的电动机的速度。 电机的设定值由速度映射的可变频率源的到达时间戳提供。 电机轴转速用转速计测量，其转速与电机转速成比例。 实际速度与设定值的任何偏差由输出驱动电机的功率放大器放大。 通过分组网络的速度控制可以使流程更加顺畅，加速控制，每个过程配方的不同运行速度，改变过程变量的补偿，设定目的的缓慢操作，生产率的调整，精确的定位和控制扭矩或张力 的系统。

公开(公告)号：US08582460B2

公开(公告)日：2013-11-12

申请号：US12922242

申请日：2009-03-30

申请人： Christopher M Croot ,  Trevor P Linney ,  Philip A Everett ,  John W Cook ,  Ashley Pickering

发明人： Christopher M Croot ,  Trevor P Linney ,  Philip A Everett ,  John W Cook ,  Ashley Pickering

IPC分类号： H04L1/00

CPC分类号： H04L5/14 ,  H04L1/0002 ,  H04L27/2601 ,  H04L47/10 ,  H04L47/263 ,  Y02D50/10

摘要： In a method and system for operating an ADSL access network which has a plurality of data connections (19) between the access network and end user devices (10), and in which the access network controls the rate at which data is transferred between the user devices and an onward connection (50), the access network stores a plurality of capped profiles each of which specifies a respective upper data rate to which the connection is limited and which is below the maximum achievable rate for the connection. The access network operates using a Dynamic Line Management (DLM) algorithm which, for a given data connection, operates to enable data transfer at a variable data rate up to the maximum rate, monitors the error performance and signal to noise margin variation for different data rates and, in the event that one or both are outside respective limits for a predetermined period, selects and applies one of the capped profiles to limit the upper data rate, selection being determined by the highest data rate achieved for which the error performance was within acceptable limits.

摘要翻译： 在用于操作ADSL接入网络的方法和系统中，所述ADSL接入网络在接入网络和终端用户设备（10）之间具有多个数据连接（19），并且其中接入网络控制在用户之间传送数据的速率 设备和向前连接（50），所述接入网络存储多个限制的配置文件，每个配置配置文件规定连接受限的相应的高数据速率，并且低于用于连接的最大可实现速率。 接入网络使用动态线路管理（DLM）算法进行操作，对于给定的数据连接，该算法能够以可变数据速率达到最大速率来进行数据传输，监视不同数据的误码性能和噪声容限变化 速率，并且在一个或两个在预定时间段内的一个或两个超出相应限制的情况下，选择并应用其中一个封盖的配置文件来限制较高的数据速率，选择由实现的错误性能在其内 可接受的限度。

公开(公告)号：US08494051B2

公开(公告)日：2013-07-23

申请号：US10535621

申请日：2003-11-18

申请人： Yongmin Li ,  Li-Qun Xu ,  David G Morrison ,  Charles Nightingale ,  Jason Morphett

发明人： Yongmin Li ,  Li-Qun Xu ,  David G Morrison ,  Charles Nightingale ,  Jason Morphett

IPC分类号： H04N7/12

CPC分类号： H04N19/23 ,  H04N19/513 ,  H04N19/527

摘要： Global motion between frames of a motion-compensated inter-frame encoded video sequence is estimated directly from the motion vectors encoded within the frames. For any particular frame, the motion vectors are first decoded, and a finite number of sets of vectors are selected. An affine or other geometrical transform is then used to generate a motion estimation for each set, and then the least median squared error present in each motion estimation is calculated for each estimation. The motion estimation with the smallest least median squared error is then selected as being representative of the global motion in the image of the frame. A panoramic image generating method and system makes uses of the global motion estimations thus obtained.

摘要翻译： 运动补偿帧间编码视频序列的帧之间的全局运动直接从帧内编码的运动矢量估计。 对于任何特定帧，首先对运动矢量进行解码，并选择有限数量的矢量集。 然后使用仿射或其他几何变换来为每个集合生成运动估计，然后针对每个估计计算每个运动估计中存在的最小中值平方误差。 然后选择具有最小最小中值平方误差的运动估计作为帧的图像中的全局运动的代表。 全景图像生成方法和系统利用由此获得的全局运动估计。

公开(公告)号：US08462691B2

公开(公告)日：2013-06-11

申请号：US12594013

申请日：2008-03-28

申请人： Jane E Tateson

发明人： Jane E Tateson

IPC分类号： H04B7/14 ,  H04L1/00 ,  H04L12/26 ,  H04L12/28 ,  H04L12/56 ,  H04W4/00

CPC分类号： H04L1/188 ,  H04L45/124 ,  H04L47/30 ,  H04L69/28 ,  H04L2001/0097 ,  H04W28/10 ,  H04W28/14 ,  H04W40/04 ,  H04W40/18 ,  H04W40/20 ,  H04W84/18

摘要： A number of data relay devices, e.g. mobile telephones, (10, 20, 30, 40, 50, 60, 70, 80), are conveyed by vehicles and move relative to each other. They form a vehicular ad hoc wireless network (19, 29, 39, 49), etc in which data stored by a device (20) (either own-generated or relayed from another device (10) is transmitted either directly or by means of one or more other devices (30) to a network access point (90) which interfaces with a cellular network. When two devices (20, 30) come into proximity to each other, they use an opportunistic routing algorithm to determine a forwarding direction for the data. A retransmit timer is triggered on transmission of data, and messages which are unacknowledged at the expiry of the timer period are retransmitted. The timer period dynamically follows local congestion conditions and is recalculated at each transmission by the expression, timer minimum period/recent forwarding success(t). The current recent forwarding success at time t, RFS(t), is calculated from the RFS(t−1) calculated for the immediately preceding transmission and from the current forwarding success, CFS, by the expression RFS(t)=4/5 RFS(t−1)+1/5 CFS(t) where CFS is the square of the ratio of the available buffer space in the target device to the size of the payload in the source device.

摘要翻译： 多个数据中继设备，例如， 移动电话（10,20,30,40,50,60,70,80）由车辆传送并相对移动。 它们形成车辆自组织无线网络（19,29,39,49）等，其中由设备（20）存储的数据（自己生成的或从另一设备（10）中继）的数据直接或通过 一个或多个其他设备（30）连接到与蜂窝网络接口的网络接入点（90），当两个设备（20,30）彼此接近时，它们使用机会路由算法来确定 数据传输时触发重传定时器，重发定时器周期结束时未确认的消息，定时器周期动态跟随本地拥塞状态，并通过表达式，定时器最小周期/ 最近的转发成功（t）。在时刻t RFS（t）的当前最近的转发成功是从对于紧接在前的传输计算的RFS（t-1）和从目前的转发成功（CFS） RFS（t）= 4/5 RFS（t-1）+1/5 CFS（t）其中CFS是目标设备中的可用缓冲空间与源设备中有效载荷大小之比的平方。

公开(公告)号：US08391152B2

公开(公告)日：2013-03-05

申请号：US10593423

申请日：2005-03-30

申请人： Bob Briscoe ,  Andrea Soppera ,  Arnaud Jacquet ,  Sebastien Cazalet

发明人： Bob Briscoe ,  Andrea Soppera ,  Arnaud Jacquet ,  Sebastien Cazalet

IPC分类号： H04L12/26

CPC分类号： H04L12/14 ,  H04L12/1425 ,  H04L12/1489 ,  H04L45/02 ,  H04L45/123 ,  H04L45/22 ,  H04L45/26 ,  H04L45/70

摘要： Data networks and nodes making up parts of data networks are arranged to derive information relating to the characterization of paths taken by data travelling between nodes in the networks. Path characterization information is fed back from a receiver of data to a provider of data, and informs nodes subsequently forwarding data of characteristics of the downstream path. Also described are routing and related controlling nodes and methods for using such path characterization information to make informed routing and other decisions when forwarding data in a data network.

摘要翻译： 构成数据网络部分的数据网络和节点被安排为导出与在网络中的节点之间传播的数据所描述的路径的特征相关的信息。 路径特征信息从数据接收器反馈到数据提供者，并且通知节点随后转发下游路径特征的数据。 还描述了路由和相关控制节点以及用于在数据网络中转发数据时使用这样的路径表征信息进行通知路由和其他决定的方法。

公开(公告)号：US20130034197A1

公开(公告)日：2013-02-07

申请号：US13204079

申请日：2011-08-05

申请人： James Aweya ,  Saleh Al Araji

发明人： James Aweya ,  Saleh Al Araji

IPC分类号： H04L7/04

CPC分类号： H04J3/0664 ,  H03L7/0807 ,  H03L7/099 ,  H03L7/0991 ,  H03L7/0994 ,  H03L2207/50 ,  H04J3/0667

摘要： The present invention provides a method of synchronising the frequency of a slave clock to that of a master, preferably using a packet network. An aspects of the invention provide a method of synchronizing the frequency of a slave clock in a slave device to a master clock in a master device, the method including the steps of: a) receiving in the slave device a first message from said master device having a first time-stamp which is a time-stamp of said master clock indicating the time of sending of said first message; b) extracting said time-stamp from said message and initializing a counter in the slave device which counts an output of said slave clock; c) receiving in the slave device a further message from said master device and reading the value of said counter at the time of receipt of said further message; d) extracting a further time-stamp which is the precise time of sending of the further message according to said master clock; e) determining an error signal which is representative of the difference between said value of the counter and the difference between said first and further time-stamps; and f) adjusting the frequency of said slave clock based on said error signal. An apparatus for synchronizing the frequency of a clock in a slave device which is communicatively coupled to a master device is also provided.

摘要翻译： 本发明提供了一种使从属时钟的频率与主机的频率同步的方法，优选地使用分组网络。 本发明的一个方面提供了一种使从设备中的从时钟频率与主设备中的主时钟同步的方法，所述方法包括以下步骤：a）在从设备中接收来自所述主设备的第一消息 具有第一时间戳，其是表示发送所述第一消息的时间的所述主时钟的时间戳; b）从所述消息中提取所述时间戳并初始化从属设备中计数所述从时钟的输出的计数器; c）在所述从设备中从所述主设备接收另外的消息并在接收到所述另外的消息时读取所述计数器的值; d）提取作为根据所述主时钟发送另外的消息的精确时间的另外的时间戳; e）确定代表所述计数器的所述值与所述第一和其它时间戳之间的差的差的误差信号; 以及f）基于所述误差信号调整所述从时钟的频率。 还提供了一种用于使通信地耦合到主设备的从设备中的时钟频率同步的设备。

公开(公告)号：US20120102516A1

公开(公告)日：2012-04-26

申请号：US13379857

申请日：2010-07-09

申请人： Robert Perkins

发明人： Robert Perkins

IPC分类号： H04N21/00 ,  G06F3/00

CPC分类号： H04H60/64 ,  H04H20/14 ,  H04H60/37 ,  H04H60/43 ,  H04H60/76 ,  H04H2201/37 ,  H04H2201/40 ,  H04H2201/90

摘要： Supplementary data associated with a broadcast transmission (5, 26) is made available to the viewer by identifying the content currently being received at a user terminal (2). The user generates a request for data which includes the identity of the broadcast content. This request is transmitted from the user terminal (2) to a content provision platform (4). The content provision platform retrieves supplementary data associated with the identified broadcast content and delivers the supplementary data to a predetermined return address (9).

摘要翻译： 通过识别用户终端（2）当前正在接收的内容，向观众提供与广播传输相关联的补充数据（5,26）。 用户生成包括广播内容的身份的数据的请求。 该请求从用户终端（2）发送到内容提供平台（4）。 内容提供平台检索与所识别的广播内容相关联的补充数据，并将补充数据传送到预定的返回地址（9）。

公开(公告)号：US08165565B2

公开(公告)日：2012-04-24

申请号：US12161806

申请日：2006-10-27

申请人： Piotr L Cofta

发明人： Piotr L Cofta

IPC分类号： H04M1/66

CPC分类号： H04W12/04 ,  H04L9/0844 ,  H04L9/3273 ,  H04L63/0853 ,  H04L2209/80 ,  H04L2463/061 ,  H04W12/06

摘要： Under a system referred to as GAA in the 3G protocol, authentication of devices in a network that is usually performed by a home subscriber server can be transferred to a third party element known as a bootstrapping server function. However, the use of a bootstrapping server function does not completely address the problem of reducing authentication traffic at the home subscriber server. Such a problem is alleviated by utilizing the original session key generated under GAA and using that key in a recursive process to authenticate and generate further session keys at other network elements. This generation of further keys can be performed independently of the home subscriber server, and thus reduces traffic at the home subscriber server.

摘要翻译： 在3G协议中称为GAA的系统下，通常由归属订户服务器执行的网络中的设备的认证可以被传送到被称为自举服务器功能的第三方元件。 然而，使用引导服务器功能并没有完全解决在家用户服务器上减少认证流量的问题。 通过利用在GAA下生成的原始会话密钥来缓解这个问题，并在递归过程中使用该密钥对其他网元进行认证和生成其他会话密钥。 可以独立于本地用户服务器来执行这一代的进一步的密钥，从而降低归属用户服务器的流量。

公开(公告)号：US08102876B2

公开(公告)日：2012-01-24

申请号：US12004080

申请日：2007-12-20

申请人： Alan McGuire

发明人： Alan McGuire

IPC分类号： H04J3/24

CPC分类号： H04L12/4633 ,  H04L12/413

摘要： A communications system in which carrier Ethernet conveys a plurality of differing types of client signals encapsulated with a generic framing procedure adaptation layer. The client signals are adapted for encapsulation within the carrier Ethernet frames by mapping the client signal within an generic framing procedure adaptation layer signal and then by mapping the generic framing procedure adaptation layer signal into the carrier Ethernet signal, the client signal being identified within the generic framing procedure signal.

摘要翻译： 一种通信系统，其中运营商以太网传送用通用成帧过程适配层封装的多种不同类型的客户端信号。 通过在通用成帧过程适配层信号内映射客户端信号，然后通过将通用成帧过程自适应层信号映射到载波以太网信号中，客户端信号适于在载波以太网帧内进行封装，客户端信号在通用 成帧程序信号。

公开(公告)号：US20110131312A1

公开(公告)日：2011-06-02

申请号：US13003837

申请日：2009-07-14

申请人： Paul Marrow ,  David M. Gowans ,  Richard E. Tateson

发明人： Paul Marrow ,  David M. Gowans ,  Richard E. Tateson

IPC分类号： G06F15/173

CPC分类号： H04L41/5051 ,  H04L41/0893

摘要： In a method of operating a data network comprising a plurality of interconnected nodes (30) each of which is operable to perform one or more services upon receiving a suitable request for a service, one or more user devices (10) connected to the network can issue requests (12, 14) for a service to be carried out by a node or nodes within the network. The method comprises: operating a virtual mechanism (50) in which a plurality of different types of elements (61, 65, 66, 67) are represented, each element obeying a set of rules associated with the respective type of the element, the respective set of rules specifying how the element behaves, wherein the probabilistic rules governing the creation, destruction and alteration of the elements are arranged to ensure that the total population of elements per node, and/or the total number of each type of element per node tends to remain below a certain settable threshold population whereby the mechanism can generally be operated without requiring elements to be dropped because of a lack of hardware processing resources, thereby maintaining the efficiency of the mechanism.

摘要翻译： 在操作包括多个互连节点（30）的数据网络的方法中，每个互连节点（30）可以在接收到对服务的适当请求时执行一个或多个服务，一个或多个连接到网络的用户设备（10）可以 用于由网络中的节点或节点执行的服务的发出请求（12,14）。 该方法包括：操作其中表示多个不同类型的元件（61,65,66,67）的虚拟机构（50），每个元件遵循与该元件的相应类型相关联的一组规则，相应的 指定元素行为的规则集合，其中管理元素的创建，销毁和更改的概率规则被排列成确保每个节点的元素的总总数和/或每个节点的每种类型的元素的总数趋于 以保持在某个可设定的阈值人口以下，由于缺乏硬件处理资源，通常可以在不需要元件的情况下操作机构，从而保持机构的效率。