公开(公告)号：US08553694B2

公开(公告)日：2013-10-08

申请号：US12854584

申请日：2010-08-11

申请人： Ke Du ,  Mingyi Wang ,  Chunhong Huang ,  Jun Feng ,  Weidong Zhong

发明人： Ke Du ,  Mingyi Wang ,  Chunhong Huang ,  Jun Feng ,  Weidong Zhong

IPC分类号： H04L12/56

CPC分类号： H04L12/4641 ,  H04L45/507

摘要： A pseudo wire label reflector, based on a existing label distribution router, further includes: a mode management unit, for determining the mode for switching and transferring a pseudo wire label message; a first session management unit, for saving the support information that LDP signaling session connection supports the pseudo wire label reflecting capacity; a first pseudo wire label receiving unit, for receiving a pseudo wire label message; a first pseudo wire management unit, for saving the switched pseudo wire state and deciding whether to modify the pseudo wire label message according to the switch and transfer mode determined by the mode management unit; a first pseudo wire label sending unit, for sending the pseudo wire label message. The invention also provides an edge apparatus and a L2 VPN. The present invention makes PE equipments participating pseudo wire service to set up PSN tunnel and LDP signaling session connection with the pseudo wire label reflector by introducing the pseudo wire label reflector and extending the capacity that the current edge apparatus supports the pseudo wire label reflector.

摘要翻译： 基于现有标签分发路由器的伪线标签反射器还包括：模式管理单元，用于确定用于切换和传送伪线标签消息的模式; 第一会话管理单元，用于保存LDP信令会话连接支持伪线标签反映能力的支持信息; 第一伪线标签接收单元，用于接收伪线标签消息; 第一伪线管理单元，用于保存切换伪线状态，并根据由模式管理单元确定的切换和传送模式来决定是否修改伪线标签消息; 第一伪线标签发送单元，用于发送伪线标签消息。 本发明还提供边缘设备和L2 VPN。 本发明使PE设备参与伪线业务，通过引入伪线标签反射器并扩展当前边缘设备支持伪线标签反射器的容量，建立伪线标签反射器的PSN隧道和LDP信令会话连接。

公开(公告)号：US20080291921A1

公开(公告)日：2008-11-27

申请号：US11632445

申请日：2005-01-04

申请人： Ke Du ,  Mingyi Wang ,  Chunhong Huang ,  Jun Feng ,  Weidong Zhong

发明人： Ke Du ,  Mingyi Wang ,  Chunhong Huang ,  Jun Feng ,  Weidong Zhong

IPC分类号： H04L12/56

CPC分类号： H04L12/4641 ,  H04L45/507

摘要： A pseudo wire label reflector, based on a existing label distribution router, further includes: a mode management unit, for determining the mode for switching and transferring a pseudo wire label message; a first session management unit, for saving the support information that LDP signaling session connection supports the pseudo wire label reflecting capacity; a first pseudo wire label receiving unit, for receiving a pseudo wire label message; a first pseudo wire management unit, for saving the switched pseudo wire state and deciding whether to modify the pseudo wire label message according to the switch and transfer mode determined by the mode management unit; a first pseudo wire label sending unit, for sending the pseudo wire label message. The invention also provides an edge apparatus, a L2 VPN and a method for providing pseudo wire service in PSN. The present invention makes PE equipments participating pseudo wire service to set up PSN tunnel and LDP signaling session connection with the pseudo wire label reflector by introducing the pseudo wire label reflector and extending the capacity that the current edge apparatus supports the pseudo wire label reflector.

摘要翻译： 基于现有标签分发路由器的伪线标签反射器还包括：模式管理单元，用于确定用于切换和传送伪线标签消息的模式; 第一会话管理单元，用于保存LDP信令会话连接支持伪线标签反映能力的支持信息; 第一伪线标签接收单元，用于接收伪线标签消息; 第一伪线管理单元，用于保存切换伪线状态，并根据由模式管理单元确定的切换和传送模式来决定是否修改伪线标签消息; 第一伪线标签发送单元，用于发送伪线标签消息。 本发明还提供一种边缘设备，L2 VPN和在PSN中提供伪线服务的方法。 本发明使PE设备参与伪线业务，通过引入伪线标签反射器并扩展当前边缘设备支持伪线标签反射器的容量，建立伪线标签反射器的PSN隧道和LDP信令会话连接。

公开(公告)号：US07801138B2

公开(公告)日：2010-09-21

申请号：US11632445

申请日：2005-01-04

申请人： Ke Du ,  Mingyi Wang ,  Chunhong Huang ,  Jun Feng ,  Weidong Zhong

发明人： Ke Du ,  Mingyi Wang ,  Chunhong Huang ,  Jun Feng ,  Weidong Zhong

IPC分类号： H04L12/56

CPC分类号： H04L12/4641 ,  H04L45/507

摘要： A pseudo wire label reflector, based on a existing label distribution router, further includes: a mode management unit, for determining the mode for switching and transferring a pseudo wire label message; a first session management unit, for saving the support information that LDP signaling session connection supports the pseudo wire label reflecting capacity; a first pseudo wire label receiving unit, for receiving a pseudo wire label message; a first pseudo wire management unit, for saving the switched pseudo wire state and deciding whether to modify the pseudo wire label message according to the switch and transfer mode determined by the mode management unit; a first pseudo wire label sending unit, for sending the pseudo wire label message. The invention also provides an edge apparatus, a L2 VPN and a method for providing pseudo wire service in PSN. The present invention makes PE equipments participating pseudo wire service to set up PSN tunnel and LDP signaling session connection with the pseudo wire label reflector by introducing the pseudo wire label reflector and extending the capacity that the current edge apparatus supports the pseudo wire label reflector.

摘要翻译： 基于现有标签分发路由器的伪线标签反射器还包括：模式管理单元，用于确定用于切换和传送伪线标签消息的模式; 第一会话管理单元，用于保存LDP信令会话连接支持伪线标签反映能力的支持信息; 第一伪线标签接收单元，用于接收伪线标签消息; 第一伪线管理单元，用于保存切换伪线状态，并根据由模式管理单元确定的切换和传送模式来决定是否修改伪线标签消息; 第一伪线标签发送单元，用于发送伪线标签消息。 本发明还提供一种边缘设备，L2 VPN和在PSN中提供伪线服务的方法。 本发明使PE设备参与伪线业务，通过引入伪线标签反射器并扩展当前边缘设备支持伪线标签反射器的容量，建立伪线标签反射器的PSN隧道和LDP信令会话连接。

公开(公告)号：US20110026530A1

公开(公告)日：2011-02-03

申请号：US12854584

申请日：2010-08-11

申请人： Ke Du ,  Mingyi Wang ,  Chunhong Huang ,  Jun Feng ,  Weidong Zhong

发明人： Ke Du ,  Mingyi Wang ,  Chunhong Huang ,  Jun Feng ,  Weidong Zhong

IPC分类号： H04L12/28

CPC分类号： H04L12/4641 ,  H04L45/507

摘要： A pseudo wire label reflector, based on a existing label distribution router, further includes: a mode management unit, for determining the mode for switching and transferring a pseudo wire label message; a first session management unit, for saving the support information that LDP signaling session connection supports the pseudo wire label reflecting capacity; a first pseudo wire label receiving unit, for receiving a pseudo wire label message; a first pseudo wire management unit, for saving the switched pseudo wire state and deciding whether to modify the pseudo wire label message according to the switch and transfer mode determined by the mode management unit; a first pseudo wire label sending unit, for sending the pseudo wire label message. The invention also provides an edge apparatus and a L2 VPN. The present invention makes PE equipments participating pseudo wire service to set up PSN tunnel and LDP signaling session connection with the pseudo wire label reflector by introducing the pseudo wire label reflector and extending the capacity that the current edge apparatus supports the pseudo wire label reflector.

摘要翻译： 基于现有标签分发路由器的伪线标签反射器还包括：模式管理单元，用于确定用于切换和传送伪线标签消息的模式; 第一会话管理单元，用于保存LDP信令会话连接支持伪线标签反映能力的支持信息; 第一伪线标签接收单元，用于接收伪线标签消息; 第一伪线管理单元，用于保存切换伪线状态，并根据由模式管理单元确定的切换和传送模式来决定是否修改伪线标签消息; 第一伪线标签发送单元，用于发送伪线标签消息。 本发明还提供边缘设备和L2 VPN。 本发明使PE设备参与伪线业务，通过引入伪线标签反射器并扩展当前边缘设备支持伪线标签反射器的容量，建立伪线标签反射器的PSN隧道和LDP信令会话连接。

公开(公告)号：US08223761B2

公开(公告)日：2012-07-17

申请号：US11660891

申请日：2004-12-28

申请人： Jian Feng ,  Ke Du ,  Hui He

发明人： Jian Feng ,  Ke Du ,  Hui He

IPC分类号： H04L12/28 ,  H04L12/56

CPC分类号： H04L43/10 ,  H04L41/14 ,  H04L43/0817 ,  H04L43/0829 ,  H04L45/00 ,  H04L45/302 ,  H04L45/306

摘要： A route diagnosis method which supports policy-based routing is applied in the network which includes a router supporting policy-based routing, which comprises: adding stream description information of service stream in diagnosis-protocol-message, and containing a router warning option in IP head of the said diagnosis-protocol-message; based on the router supporting policy-based routing receiving said diagnosis-protocol-message, routing according to said stream description information in the said diagnosis-protocol-message; said diagnosis-protocol-message is processed as standard diagnosis-protocol-message by the router which is independent of policy-based routing. Employing the method of the present invention, the middle router which supports policy-based routing is able to transfer the message independent of IP head of the said diagnosis-protocol-message, but select routing according to said stream description information included in the message, thereby being capable of keeping the consistency between the diagnosis-protocol-message and routing of the service stream. The purpose that is actually diagnosing routing or correctly diagnosing route is achieved.

摘要翻译： 支持基于策略的路由的路由诊断方法应用于包括支持基于策略的路由的路由器的网络中，该路由器包括：在诊断协议消息中添加业务流的流描述信息，并在IP中包含路由器警告选项 所述诊断协议消息的头部; 基于路由器支持基于策略的路由接收所述诊断协议消息，根据所述诊断协议消息中的所述流描述信息进行路由; 所述诊断协议消息被路由器处理为标准诊断协议消息，该路由器独立于基于策略的路由。 采用本发明的方法，支持基于策略的路由的中间路由器能够独立于所述诊断协议消息的IP头传送消息，而是根据消息中包括的所述流描述信息选择路由， 从而能够保持诊断协议消息与服务流的路由之间的一致性。 目的是实际诊断路由或正确诊断路由。

公开(公告)号：US07830802B2

公开(公告)日：2010-11-09

申请号：US11813187

申请日：2005-07-29

申请人： Jinhong Huang ,  Zhijian Feng ,  Ke Du

发明人： Jinhong Huang ,  Zhijian Feng ,  Ke Du

IPC分类号： G08C15/00

CPC分类号： H04L47/10 ,  H04L12/185 ,  H04L45/16 ,  H04L47/12 ,  H04L47/15 ,  H04L47/20 ,  H04L47/24

摘要： According to the method for preventing IP multicast data stream from overloading the communication system by distinguishing multiple services, when a multicast data packet ‘packet (key)’ with its key value being ‘key’ reaches the forwarding layer, if it doesn't find the matching multicast route entry or matching multicast forwarding entry, and it satisfies the requirement of multicast protocol Assert state machine, then it searches for current-limiting policy list L (type, key) according to the key, and applies the searched current-limiting policy to multicast forwarding and packet up-sending. If it finds the matching multicast route entry and the protocol requests sending the multicast data packet to the protocol processor, the new multicast forwarding entry P_M(key) is formed with the current-limiting policy of distinguishing the service type(key), and P_M(key) is used to forward and up-send. The above-mentioned three current-limiting types may be used separately or combined freely.

摘要翻译： 根据通过区分多个业务来防止IP组播数据流过载通信系统的方法，当其密钥值为“密钥”的组播数据包“密钥”（“key”）到达转发层时，如果没有找到 匹配的组播路由条目或匹配的组播转发表项，满足组播协议断言状态机的要求，然后根据密钥搜索限流策略列表L（类型，密钥），并应用搜索的限流 组播转发和报文上发策略。 如果发现匹配的组播路由表项和协议请求向协议处理器发送组播数据报文，则新的组播转发表项P_M（key）与限定业务类型（密钥）的限制策略和P_M （键）用于转发和向上发送。 上述三种限流类型可以单独使用或组合使用。

公开(公告)号：US6091560A

公开(公告)日：2000-07-18

申请号：US960797

申请日：1997-10-30

申请人： Ke Du

发明人： Ke Du

IPC分类号： G11B5/55 ,  G11B5/596 ,  G11B21/08 ,  G11B21/10 ,  G11B5/09

CPC分类号： G11B5/5526 ,  G11B21/085 ,  G11B21/106 ,  G11B5/59622 ,  G11B5/59627

摘要： An apparatus and method for removing baseline shift in low frequency readback signals of a disc drive, such signals characterized by peaks separated by baseline portions. The disc drive comprises a head controllably positionable adjacent tracks on a rotatable disc, a servo circuit which controls the position of the head in response to the readback signals and an adjustable filter operably connected to and serially disposed between the head and the servo circuit. When baseline shift is detected in the baseline portions of the readback signals at a predetermined margin threshold, the response characteristics of the adjustable filter are adjusted to remove the detected baseline shift from the readback signals.

公开(公告)号：US5898532A

公开(公告)日：1999-04-27

申请号：US724358

申请日：1996-10-01

申请人： Ke Du ,  Deanne S. Grover ,  Jim R. Shaver ,  Dennis C. Kastl

发明人： Ke Du ,  Deanne S. Grover ,  Jim R. Shaver ,  Dennis C. Kastl

IPC分类号： G11B5/00 ,  G11B5/012 ,  G11B5/035 ,  G11B20/12 ,  G11B20/24 ,  G11B5/09

CPC分类号： G11B5/035 ,  G11B20/24 ,  G11B5/012 ,  G11B5/6076 ,  G11B20/1258 ,  G11B2005/0016

摘要： A disc drive data recovery system for recovering data from a magnetic disc having asperities is disclosed. The data recovery system includes a magnetoresistive head for reading magnetically encoded data from the magnetic disc and providing in response a signal indicative of the magnetically encoded data. Contact between the magnetoresistive head and an asperity corrupts the signal such that the signal contains thermal asperity noise. The data recovery system includes an asperity recovery filter coupled to the magnetoresistive head for receiving the signal from the magnetoresistive head and reducing the thermal asperity noise in the signal.

摘要翻译： 公开了一种用于从具有凹凸的磁盘恢复数据的盘驱动器数据恢复系统。 数据恢复系统包括用于从磁盘读取磁编码数据的磁阻头，并且响应地提供指示磁编码数据的信号。 磁阻头与粗糙度之间的接触会破坏信号，使得信号包含热不均匀噪声。 数据恢复系统包括耦合到磁阻头的粗糙度恢复滤波器，用于接收来自磁阻磁头的信号，并降低信号中的热粗糙度噪声。

公开(公告)号：US20080219260A1

公开(公告)日：2008-09-11

申请号：US11996641

申请日：2006-08-08

申请人： Ke Du ,  Chen Wu ,  Chengfa Fan ,  Yanfeng Qu

发明人： Ke Du ,  Chen Wu ,  Chengfa Fan ,  Yanfeng Qu

IPC分类号： H04L12/28

CPC分类号： H04L12/4641 ,  H04L12/185 ,  H04L12/1886

摘要： A multicast-supported virtual local area network switching system and a method thereof comprise a switching engine (10), a CPU unit (20), further comprising a mapping storage unit (30) for storing the mapping relationship of the virtual local area network and the multicast stream pushed to the switching system by it, and a switching table storage unit (40) for storing the corresponding relation between ingress virtual local area network and egress virtual local area network; the switching engine (10) receives the internet group management protocol message from the user virtual local area network and transmits the message to the CPU unit (20) for processing, if it is Internet group management protocol join/leave message, the CPU unit (20) looks up the mapping storage unit (30) and forwards it in the looked-up multicast virtual local area network; the switching engine (10) receives the Internet group management protocol messages or multicast data frames from the multicast virtual local area network and forwards them in the looked-up user virtual local area network by looking up the switching table storage unit (40).

摘要翻译： 一种组播支持的虚拟局域网交换系统及其方法，包括交换引擎（10），CPU单元（20），还包括映射存储单元（30），用于存储虚拟局域网的映射关系，以及 组播流被推送到交换系统;以及切换表存储单元，用于存储入口虚拟局域网与出口虚拟局域网之间的对应关系; 交换引擎（10）从用户虚拟局域网接收到因特网组管理协议消息，并将消息发送到CPU单元（20）以进行处理，如果是因特网组管理协议加入/离开消息，则CPU单元 20）查找映射存储单元（30）并将其转发到查找的组播虚拟局域网中; 交换引擎（10）从多播虚拟局域网接收因特网组管理协议消息或多播数据帧，并通过查找切换表存储单元（40）将其转发到查找用户虚拟局域网中。

公开(公告)号：US06628468B1

公开(公告)日：2003-09-30

申请号：US09613216

申请日：2000-07-10

申请人： Ke Du

发明人： Ke Du

IPC分类号： G11B509

CPC分类号： G11B5/5526 ,  G11B5/59622 ,  G11B5/59627 ,  G11B21/085 ,  G11B21/106

摘要： An apparatus and method for removing baseline shift in low frequency readback signals of a disc drive, such signals characterized by peaks separated by baseline portions. The disc drive comprises a head controllably positionable adjacent tracks on a rotatable disc, a servo circuit which controls the position of the head in response to the readback signals and an adjustable filter operably connected to and serially disposed between the head and the servo circuit. When baseline shift is detected in the baseline portions of the readback signals at a predetermined margin threshold, the response characteristics of the adjustable filter are adjusted to remove the detected baseline shift from the readback signals.

摘要翻译： 一种用于去除磁盘驱动器的低频回读信号中的基线偏移的装置和方法，其特征在于由基准部分分开的峰值。 磁盘驱动器包括位于可旋转磁盘上的可控定位的相邻轨迹的磁头，响应于回读信号控制磁头位置的伺服电路，以及可操作地连接到并串行地设置在磁头与伺服电路之间的可调滤波器。 当在预定余量阈值的回读信号的基线部分中检测到基线偏移时，调整可调滤波器的响应特性以从回读信号中移除检测到的基线偏移。