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91. 发明申请

US20060126496A1 Fast reroute (FRR) protection at the edge of a RFC 2547 network 有权
公开(公告)号：US20060126496A1
公开(公告)日：2006-06-15
申请号：US11010225
申请日：2004-12-10
申请人： Clarence Filsfils , Stefano Previdi , John Scudder , David Ward , Jean-Philippe Vasseur , Jim Guichard
发明人： Clarence Filsfils , Stefano Previdi , John Scudder , David Ward , Jean-Philippe Vasseur , Jim Guichard
IPC分类号： H04L12/26
CPC分类号： H04L45/28 , H04L45/02 , H04L45/04 , H04L45/22 , H04L45/50
摘要： A fast reroute (FRR) technique that may be deployed at the edge of a network having first and second edge devices coupled to a neighboring routing domain. If the first edge device detects a node or link failure that prevents it from communicating with the neighboring domain, the first edge device reroutes at least some data packets addressed to the neighboring domain to the second edge device. The second edge device receives the rerouted packets and then forwards the packets to the neighboring domain. Notably, the second edge device is not permitted to reroute the received packets a second time, e.g., upon identifying another inter-domain node or link failure. As such, loops are avoided at the edge of the network and packets are rerouted to the neighboring routing domain faster and more efficiently than in prior implementations.

92. 发明授权

US07031262B2 Reoptimization triggering by path computation elements 有权
标题翻译：路径计算元素的优化触发
公开(公告)号：US07031262B2
公开(公告)日：2006-04-18
申请号：US10848744
申请日：2004-05-19
申请人： Jean Philippe Vasseur , David Ward , Muthurajah Sivabalan , Robert Goguen
发明人： Jean Philippe Vasseur , David Ward , Muthurajah Sivabalan , Robert Goguen
IPC分类号： H04L12/26
CPC分类号： H04L45/12 , H04L45/04 , H04L45/125 , H04L45/42 , H04L45/44 , H04L45/50 , H04L45/70 , H04L47/125 , H04L47/762 , H04L47/822 , H04L47/825
摘要： A mechanism to alleviate bandwidth fragmentation in a network employing path computation element(s) to place MPLS Traffic Engineering tunnels. One application is a multiple Autonomous System or multiple area network employing distributed computation of MPLS Traffic Engineering LSPs. A particular path computation element may determine that bandwidth fragmentation is present based on monitoring of path computation failures where desired paths are blocked due to bandwidth constraints. In response to the detected bandwidth fragmentation condition, the path computation element floods a routing notification within its Autonomous System or area. Nodes respond to the routing notification by requesting reoptimization of their own previously requested Traffic Engineering LSPs allowing the path computation element an opportunity to alleviate bandwidth fragmentation.
摘要翻译：一种减轻使用路径计算元素的网络中带宽分段的放置MPLS流量工程隧道的机制。一个应用是采用MPLS流量工程LSP的分布式计算的多自治系统或多区域网络。特定路径计算元件可以基于由于带宽限制阻止期望路径的路径计算失败的监视来确定存在带宽分段。响应于检测到的带宽分段条件，路径计算元件在其自治系统或区域内泛洪路由通知。节点通过请求重新优化自己先前请求的流量工程LSP来响应路由通知，允许路径计算元素减轻带宽分段的机会。

93. 发明申请

US20060045024A1 Mechanism to improve concurrency in execution of routing computation and routing information dissemination 有权
公开(公告)号：US20060045024A1
公开(公告)日：2006-03-02
申请号：US10928866
申请日：2004-08-27
申请人： Stefano Previdi , Clarence Filsfils , David Ward
发明人： Stefano Previdi , Clarence Filsfils , David Ward
IPC分类号： H04L12/56 , H04L12/26
CPC分类号： H04L45/56 , H04L45/02 , H04L45/12 , H04L47/24 , H04L47/6235 , H04L49/90 , H04L49/9078
摘要： A technique enables an intermediate network node to efficiently process link-state packets using a single running context (i.e., process or thread). The intermediate network node floods received link-state packets (LSP) before performing shortest path first (SPF) calculations and routing information base (RIB) updates. In addition, the node limits the number of LSPs that are permitted to be flooded before the node performs its SPF calculations. More specifically, if the number of link-state packets that are flooded during a flooding cycle exceeds a first predetermined threshold value, the node performs the SPF calculations before additional packets may be flooded. The intermediate network node also limits how long its RIB update may be delayed in favor of flooding operations. When the number of LSPs flooded after the SPF calculations exceeds a second predetermined threshold value or there are no more packets to be flooded, the node updates the contents of its RIB based on the SPF calculations.

94. 发明授权

US06990973B2 Burner for gas cooking ranges 失效
标题翻译：燃气灶具燃气灶
公开(公告)号：US06990973B2
公开(公告)日：2006-01-31
申请号：US10979456
申请日：2004-11-02
申请人： Orio Puricelli , David Ward
发明人： Orio Puricelli , David Ward
IPC分类号： A47J37/00
CPC分类号： F24C3/085
摘要： A gas-fired burner for cooking range, which includes at least one burner, which is arranged below at least one grate on which a cooking vessel is to be arranged, the distance between the nozzles of the burner and the upper surface of the grate being directly proportional to the power of the burner and being inversely proportional to the difference between the temperature of the burner and the temperature of the vessel and to the heat conductivity of the vessel and/or food contained therein.
摘要翻译：一种用于烹饪灶的燃烧燃烧器，其包括至少一个燃烧器，其布置在其上将布置有烹饪容器的至少一个格栅下方，燃烧器的喷嘴与炉排的上表面之间的距离为与燃烧器的功率成比例，并且与燃烧器的温度与容器的温度之间的差异以及容纳在其中的容器和/或食物的热导率成反比。

95. 发明申请

US20060007944A1 Managing network device configuration using versioning and partitioning 有权
标题翻译：使用版本控制和分区管理网络设备配置
公开(公告)号：US20060007944A1
公开(公告)日：2006-01-12
申请号：US11043281
申请日：2005-01-25
申请人： Yassin Movassaghi , Sukumar Puvvala , C. Letchworth , Kapil Jain , Neal McDonnell , David Ward
发明人： Yassin Movassaghi , Sukumar Puvvala , C. Letchworth , Kapil Jain , Neal McDonnell , David Ward
IPC分类号： H04L12/28
CPC分类号： H04L41/0813 , H04L41/0866 , H04L41/0886
摘要： Configuration versioning and partitioning are provided as methods for managing large configuration for a network element such as a router or switch. In one aspect, a method performed in a network element, the network element comprising a plurality of software components that control operations and features of the network element, wherein operations and features of the network element are defined in part by a configuration, comprises creating and storing one or more configuration partition namespaces each comprising a version identifier and one or more configuration tuples; associating one or more of the configuration partition namespaces in a configuration partition; associating one of the software components and the one or more configuration partition namespaces; and creating and storing information identifying one of the software components, its associated configuration partition namespaces, and the version identifier of each of the configuration partition namespaces.
摘要翻译：提供配置版本控制和分区作为管理诸如路由器或交换机之类的网络元件的大型配置的方法。在一个方面，一种在网络元件中执行的方法，所述网络元件包括控制所述网络元件的操作和特征的多个软件组件，其中所述网络元件的操作和特征部分地由配置来定义，包括创建和存储每个包括版本标识符和一个或多个配置元组的配置分区命名空间; 在配置分区中关联一个或多个配置分区命名空间; 关联一个软件组件和一个或多个配置分区命名空间; 以及创建和存储识别软件组件之一，其关联的配置分区命名空间以及每个配置分区命名空间的版本标识符的信息。

96. 发明申请

US20050177634A1 Technique for graceful shutdown of a routing protocol in a network 有权
标题翻译：网络中路由协议正常关闭的技术
公开(公告)号：US20050177634A1
公开(公告)日：2005-08-11
申请号：US10775877
申请日：2004-02-10
申请人： John Scudder , Muthurajah Sivabalan , David Ward
发明人： John Scudder , Muthurajah Sivabalan , David Ward
IPC分类号： G06F15/16 , G06F15/173 , H04L12/56
CPC分类号： H04L45/02 , H04L45/22
摘要： A graceful shutdown technique modifies a routing protocol to allow an intermediate node, such as a router, to announce to its peer routers (peers) its intention to be gracefully shutdown and removed from service in a network. By announcing its intention to be removed from service, the shutdown router closes (terminates) all connections with its peers and all original routes advertised on those connections are removed (withdrawn) from service. According to the inventive technique, the shutdown router may continue forwarding packets over the network for a “grace” period of time, i.e., the router maintains the validity of those original routes so that packets mapped to the routes are not dropped (at least during the grace period). The grace period also allows backup paths to be propagated to each peer and put into service prior to a final withdrawal of the shutdown router's paths from a forwarding information base of the peer. Thus, the grace period enables the network to continue using the shutdown router as a next hop as it re-converges to use the alternate, backup paths.
摘要翻译：优雅的关机技术修改路由协议，允许诸如路由器之类的中间节点向其对等路由器（对等体）通告其意图被正常关闭并从网络中的服务中删除。关闭路由器通过宣布将其从服务中删除，关闭（终止）与对等体的所有连接，并将从这些连接发布的所有原始路由从服务中删除（撤销）。根据本发明的技术，关闭路由器可以在“宽限”时间段内继续通过网络转发分组，即，路由器保持那些原始路由的有效性，使得映射到路由的分组不被丢弃（至少在宽限期）。宽限期还允许将备份路径传播到每个对等体，并在关闭路由器的路径从对等体的转发信息库最后提取之前投入使用。因此，宽限期允许网络在重新收敛以使用备用路径时继续使用关闭路由器作为下一跳。

97. 发明申请

US20050111349A1 Method and apparatus for determining network routing information based on shared risk link group information 有权
标题翻译：基于共享风险链路组信息确定网络路由信息的方法和装置
公开(公告)号：US20050111349A1
公开(公告)日：2005-05-26
申请号：US10719003
申请日：2003-11-21
申请人： Jean Vasseur , Stefano Previdi , Clarence Filsfils , David Ward
发明人： Jean Vasseur , Stefano Previdi , Clarence Filsfils , David Ward
IPC分类号： G01S13/00 , H04B20060101 , H04B1/00 , H04B1/40 , H04B1/69 , H04L5/04 , H04L12/28 , H04L12/56 , H04M1/00 , H04W88/06 , H04W88/10 , H04L12/26
CPC分类号： H04L45/12 , H04B1/71635 , H04L45/02 , H04L45/18 , H04L45/22 , H04L45/28 , H04L45/46 , H04L45/48 , H04L45/50 , H04W88/06 , H04W88/10
摘要： A method and apparatus are disclosed for performing a shortest path first network routing path determination in a data communications network based in part on information about links that are associated as shared risk link groups. Micro-loops are avoided in computing shortest path first trees by considering whether links are within shared risk link groups. In a first approach, for each link state packet in a link state database, listed adjacencies are removed if the link between the node originating the LSP and the reported adjacency belongs to a shared risk link group for which one component (local link) is known as down, and a shortest path first computation is then performed. In a second approach, during the SPT computation and after having added a first node to a path, each neighboring node is added to a tentative tree if and only if, a link between the first node and the neighboring node does not belong to a shared risk link group for which one component (local link) is known as down.
摘要翻译：公开了一种用于在数据通信网络中执行最短路径第一网络路由路径确定的方法和装置，部分地基于关于作为共享风险链路组关联的链路的信息。通过考虑链路是否在共享风险链路组内，避免了计算最短路径树的微循环。在第一种方法中，对于链路状态数据库中的每个链路状态分组，如果发起LSP的节点和报告的邻接关系之间的链路属于已知一个组件（本地链路）的共享风险链路组，则删除列出的邻接关系然后执行最短路径优先计算。在第二种方法中，在SPT计算期间，并且在将第一节点添加到路径之后，当且仅当第一节点和相邻节点之间的链路不属于共享时，每个相邻节点被添加到暂定树一个组件（本地链路）被称为down的风险链路组。

98. 发明授权

US06658603B1 Method and apparatus for efficiently generating and implementing engine error codes and verifying the correctness of the implementation of the engine error codes 有权
标题翻译：用于有效地生成和实现发动机错误代码并验证发动机故障代码实施的正确性的方法和装置
公开(公告)号：US06658603B1
公开(公告)日：2003-12-02
申请号：US09551023
申请日：2000-04-17
申请人： David Ward
发明人： David Ward
IPC分类号： G06F1100
CPC分类号： G06F11/0787
摘要： A method and apparatus for efficiently generating engine error codes is disclosed. An error processing system according to the present invention includes an error table describing error states for use in generating error codes based upon the an error even, an engine for providing an error event and an error processor, coupled to the engine and the error table, the error processor including a general run time error generator for generating a list of errors according to the error table. Accordingly, modifications may be made to the error table for changes to the product error specification and for new products that do not necessitate a re-coding of the error processing system.
摘要翻译：公开了一种有效地产生发动机故障代码的方法和装置。根据本发明的错误处理系统包括：错误表，其描述用于基于误差均匀产生错误代码的错误状态，用于提供错误事件的引擎和耦合到引擎的错误处理器和错误表，所述错误处理器包括用于根据所述错误表生成错误列表的通用运行时错误发生器。因此，可以对对产品错误规范的变更和不需要重新编码错误处理系统的新产品的错误表进行修改。

99. 发明授权

US06578638B2 Drillable inflatable packer & methods of use 有权
标题翻译：可钻可充气包装机及使用方法
公开(公告)号：US06578638B2
公开(公告)日：2003-06-17
申请号：US09940067
申请日：2001-08-27
申请人： Brett Guillory , David Ward
发明人： Brett Guillory , David Ward
IPC分类号： E21B3312
CPC分类号： E21B23/06 , E21B33/1204 , E21B33/1216 , E21B33/127 , E21B33/1277 , E21B33/13
摘要： Methods for reclaiming a borehole extending from an earth surface into the earth, part of which borehole is in a lost circulation zone. The methods include the steps of closing off the borehole to fluid flow above the lost circulation zone by installing a packer system with an inflatable packer element, inflating the inflatable packer element with cement, allowing the cement to set so that the inflatable packer effectively seals off the borehole to fluid flow, and then drilling out the inflatable packer. Such a method also may include a further operation conducted in the borehole within the lost circulation zone. The packer system comprises in one arrangement a packer body, an inflatable bladder around the packer body, a plurality of ribs mounted around at least a portion of the inflatable bladder, and a valve apparatus, all of which are fabricated from a drillable material.
摘要翻译：回收从地球表面延伸到地球的钻孔的方法，其中一部分井眼处于一个流失区域。这些方法包括以下步骤：通过安装具有充气封隔器元件的封隔器系统，将可膨胀的封隔器元件用水泥充气，从而使漏水循环区域上方的流体流动闭合，允许水泥固化，使得充气封隔器有效地密封钻孔到流体流动，然后钻出充气封隔器。这种方法还可以包括在漏失循环区内的钻孔中进行的另外的操作。封隔器系统包括一个封隔器主体，围绕封隔器主体的可充气囊，围绕可膨胀囊的至少一部分安装的多个肋，以及阀装置，所有这些都是由可钻材料制成的。

100. 发明授权

US4935805A T-type undercut electrical contact on a semiconductor substrate 失效
标题翻译：在半导体衬底上的T型底切电接触
公开(公告)号：US4935805A
公开(公告)日：1990-06-19
申请号：US332876
申请日：1989-04-03
申请人： Joseph A. Calviello , Paul R. Bie , David Ward
发明人： Joseph A. Calviello , Paul R. Bie , David Ward
IPC分类号： H01L21/285 , H01L21/338
CPC分类号： H01L29/66863 , H01L21/28587
摘要： On a semiconductor substrate (14, 38) T-type undercut electrical contact structure (12, 36) and methodology provides a diffusion barrier (26, 40) preventing migration therethrough from a gold layer (30, 48) along the sides of an undercut schottky metal lower layer (28, 44) into the active region of the semiconductor substrate. In one embodiment, the diffusion barrier (26) is provided at the base of the gold layer (30). In another embodiment, the gold layer (48) is encapsulated by the diffusion barrier (40) on the bottom (46) and sides (56). The diffusion barrier base layer is deposited. The diffusion barrier side layers are electroplated.
摘要翻译：在半导体衬底（14,38）上，T型底切电接触结构（12,36）和方法提供了一种扩散阻挡层（26,40），其阻止沿着底切的侧面从金层（30,48）穿过其中的迁移肖特基金属下层（28,44）进入半导体衬底的有源区。在一个实施例中，扩散阻挡层（26）设置在金层（30）的基部。在另一个实施例中，金层（48）被扩散阻挡层（40）封装在底部（46）和侧面（56）上。沉积扩散阻挡层底层。扩散阻挡层层被电镀。

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