公开(公告)号：US07843910B2

公开(公告)日：2010-11-30

申请号：US11069798

申请日：2005-02-28

申请人： Kevin Loughran ,  David Nolan ,  Paul Hough ,  Philip Pinto

发明人： Kevin Loughran ,  David Nolan ,  Paul Hough ,  Philip Pinto

IPC分类号： H04L12/28 ,  H04L29/06 ,  H04J3/00

CPC分类号： H04L63/0428 ,  H04L1/0061 ,  H04L1/0072 ,  H04L49/354 ,  H04L63/164

摘要： Deciphering and verification of the checksum of enciphered and encapsulated UDP datagrams, particularly those which enclose a tunneling protocol such as L2TP, are achieved by the provision of a checksum verifier in parallel with a decipher block. Checksum logic creates a pseudo UDP header needed for checksum verification using fields that would occur at the start of the packet that encapsulates the UDP datagram. The first part of the packet to be deciphered is the UDP header; checksum logic can latch the checksum field into a local register. As the rest of the packet is deciphered the checksum verifier processes the data at the same time. Eventually the checksum logic will acquire a complete checksum which can be compared with the checksum that had been previously latched, so as to verify the checksum.

摘要翻译： 对加密和封装的UDP数据报的校验和进行解密和验证，特别是包含诸如L2TP的隧道协议的UDP数据报，通过与解密块并行提供校验和来实现。 校验和逻辑使用在封装UDP数据报的数据包开始时发生的字段来创建校验和验证所需的伪UDP头。 要解密的数据包的第一部分是UDP报头; 校验和逻辑可以将校验和字段锁定到本地寄存器中。 当数据包的其余部分被解密时，校验和验证器同时处理数据。 最终，校验和逻辑将获得一个完整的校验和，可以将之与之前锁存的校验和进行比较，以验证校验和。

公开(公告)号：US20060174108A1

公开(公告)日：2006-08-03

申请号：US11069798

申请日：2005-02-28

申请人： Kevin Loughran ,  David Nolan ,  Paul Hough ,  Philip Pinto

发明人： Kevin Loughran ,  David Nolan ,  Paul Hough ,  Philip Pinto

IPC分类号： H04L9/00

CPC分类号： H04L63/0428 ,  H04L1/0061 ,  H04L1/0072 ,  H04L49/354 ,  H04L63/164

摘要： Deciphering and verification of the checksum of enciphered and encapsulated UDP datagrams, particularly those which enclose a tunnelling protocol such as L2TP, are achieved by the provision of a checksum verifier in parallel with a decipher block. Checksum logic creates a pseudo UDP header needed for checksum verification using fields that would occur at the start of the packet that encapsulates the UDP datagram. The first part of the packet to be deciphered is the UDP header; checksum logic can latch the checksum field into a local register. As the rest of the packet is deciphered the checksum verifier processes the data at the same time. Eventually the checksum logic will acquire a complete checksum which can be compared with the checksum that had been previously latched, so as to verify the checksum.

摘要翻译： 对加密和封装的UDP数据报的校验和进行解密和验证，特别是包含诸如L2TP的隧道协议的UDP数据报，通过与解密块并行提供校验和来实现。 校验和逻辑使用在封装UDP数据报的数据包开始时发生的字段来创建校验和验证所需的伪UDP头。 要解密的数据包的第一部分是UDP报头; 校验和逻辑可以将校验和字段锁定到本地寄存器中。 当数据包的其余部分被解密时，校验和验证器同时处理数据。 最终，校验和逻辑将获得一个完整的校验和，可以将之与之前锁存的校验和进行比较，以验证校验和。

公开(公告)号：USD596450S1

公开(公告)日：2009-07-21

申请号：US29331979

申请日：2009-02-06

申请人： David Nolan

设计人： David Nolan

公开(公告)号：USD596445S1

公开(公告)日：2009-07-21

申请号：US29330514

申请日：2009-01-08

申请人： David Nolan

设计人： David Nolan

公开(公告)号：US06807175B1

公开(公告)日：2004-10-19

申请号：US09645569

申请日：2000-08-25

申请人： Kevin Jennings ,  Jerome Nolan ,  David Nolan ,  Michael J Gleeson

发明人： Kevin Jennings ,  Jerome Nolan ,  David Nolan ,  Michael J Gleeson

IPC分类号： H04L1256

CPC分类号： H04L45/00 ,  H04L12/18 ,  H04L12/4625 ,  H04L12/467 ,  H04L45/16 ,  H04Q11/04 ,  H04Q2213/13196 ,  H04Q2213/13242 ,  H04Q2213/13296 ,  H04Q2213/13336 ,  H04Q2213/13389

摘要： A network router has a distributed processing scheme for multicast packets. The router has a look-up and forwarding engine operative in response to the reception of an internet protocol multicast packet to direct the packet to a multiplicity of transmit ports which may or may not be connected to the source network segment from which the multicast packet was received by the router. Each transmit port is associated with a predetermined default network segment and the engine directs the packet to the ports (e.g. across the router's backplane) with an identification of the source network segment and control flags which enable processing means associated with the ports to determine by comparison of the respective network segment and the source network segment whether the packet is bridged from the respective port or routed, with relevant modification of the packet, from that port. The control flags comprises a first flag which can be set to allow the relevant modification and a second flag which can be set to allow the comparison between the source segment and the predetermined default segment.

摘要翻译： 网络路由器具有用于组播数据包的分布式处理方案。 路由器具有响应于互联网协议组播分组的接收而工作的查找和转发引擎，以将分组引导到可以或可以不连接到多播分组的源网络段的多个发送端口 由路由器接收。 每个发送端口与预定的默认网段相关联，并且引擎将分组引导到端口（例如跨越路由器的背板），其中源网络段和控制标志的标识使得与端口相关联的处理装置能够通过比较来确定 各个网段和源网段是否从该端口与相应端口桥接或通过相关的数据包修改路由。 控制标志包括可被设置为允许相关修改的第一标志和可被设置为允许源段与预定默认段之间的比较的第二标志。

公开(公告)号：USD600508S1

公开(公告)日：2009-09-22

申请号：US29330527

申请日：2009-01-08

申请人： David Nolan

设计人： David Nolan

公开(公告)号：USD600507S1

公开(公告)日：2009-09-22

申请号：US29330526

申请日：2009-01-08

申请人： David Nolan

设计人： David Nolan

公开(公告)号：USD596448S1

公开(公告)日：2009-07-21

申请号：US29330516

申请日：2009-01-08

申请人： David Nolan

设计人： David Nolan

公开(公告)号：US10711539B1

公开(公告)日：2020-07-14

申请号：US14975124

申请日：2015-12-18

申请人： David Nolan ,  Paul M. O'Connor

发明人： David Nolan ,  Paul M. O'Connor

IPC分类号： E21B19/15 ,  E04B1/348 ,  F24F7/00

摘要： A drilling system for use at a wellhead has a plurality of modules each containing rig component equipment. The plurality of modules are connected or interconnected together so as to form a drilling rig. Each of the plurality of modules has a size adapted to be lifted by forklift or a front end loader. The plurality of modules are arranged such that one end of the plurality of modules is adjacent to the wellhead. A pipe handling system is positioned adjacent to one end of the plurality of modules. A ventilation system is cooperative with the plurality of modules so as to move air toward or away from heat-generating equipment in the plurality of modules.

公开(公告)号：USD596453S1

公开(公告)日：2009-07-21

申请号：US29330522

申请日：2009-01-08

申请人： David Nolan

设计人： David Nolan