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1. 发明申请

US20130077626A1 SEPARATION OF EDGE AND ROUTING/CONTROL INFORMATION FOR MULTICAST OVER SHORTEST PATH BRIDGING 有权
标题翻译：分离通道和路径/控制信息，用于跨越短路径桥路
公开(公告)号：US20130077626A1
公开(公告)日：2013-03-28
申请号：US13242422
申请日：2011-09-23
申请人： Srikanth Keesara , Gautam Khera , Rama S. Apalla
发明人： Srikanth Keesara , Gautam Khera , Rama S. Apalla
IPC分类号： H04L12/56
CPC分类号： H04L45/66
摘要： Techniques disclosed herein include systems and methods for providing a scalable solution to transmit edge IP Multicast sender information in a Shortest Path Bridging (SPB) network. Control information is exchanged between Ingress Backbone Edge Bridges and Egress Backbone Edge Bridges using Multicast Flow Specific and type-length-value (TLV) structures, or other control messages, to announce available multicast streams at ingress nodes within the SPB network. Such exchanges of control messages trigger sending SPB specific Intermediate System To Intermediate System (IS-IS) TLV control message with path computation information via IS-IS control messages. This second set of control messages is exchanged within the SPB network and includes source-specific multicast stream information that is used by Backbone Core Bridges to establish a multicast forward state and compute multicast forwarding paths. Multicast data traffic can then be transmitted through the SPB network using a one-to-many distribution model.
摘要翻译：本文公开的技术包括用于提供可扩展解决方案以在最短路径桥接（SPB）网络中传送边缘IP多播发送者信息的系统和方法。使用组播流特定和类型长度值（TLV）结构或其他控制消息在Ingress Backbone Edge Bridges和Egress Backbone Edge Bridges之间交换控制信息，以在SPB网络内的入口节点上宣布可用的组播流。这种交换控制消息通过IS-IS控制消息触发发送SPB特定的具有路径计算信息的中间系统到中间系统（IS-IS）TLV控制消息。该第二组控制消息在SPB网络内进行交换，并包括由Backbone Core Bridges用于建立组播转发状态并计算组播转发路径的源特定组播流信息。然后可以使用一对多分布模型通过SPB网络传输组播数据流量。

2. 发明申请

US20130077625A1 EXTENSION OF THE INTERPRETATION AND DEFINITION OF THE IS-IS TLV/SUB-TLV 有权
标题翻译：扩展IS-IS TLV / SUB-TLV的解释和定义
公开(公告)号：US20130077625A1
公开(公告)日：2013-03-28
申请号：US13242250
申请日：2011-09-23
申请人： Gautam Khera , Srikanth Keesara , Rama S. Apalla
发明人： Gautam Khera , Srikanth Keesara , Rama S. Apalla
IPC分类号： H04L12/56
CPC分类号： H04L45/16 , H04L12/4625 , H04L45/66
摘要： Techniques disclosed herein include systems and methods for improving efficiency of multicast state generation within Shortest Path Bridging (SPB) networks. Techniques include using an IS-IS TLV structure with new multicast state computation rules for SPB Networks. SPB Networks use a TLV field for the I-SID Address (and equivalent TLV fields defined in different IETF/IEEE drafts) and node nicknames to signal information that is used to compute a multicast state required to provide L2 Services over a given SPB Network. The I-SID Address TLV is set or filled to carry various items of information. These items of information can include Backbone Media Access Control (B-MAC), Virtual Local Area Network Identifier (VID), I-SID[Transmit, Receive Bit], etc.
摘要翻译：本文公开的技术包括用于在最短路径桥接（SPB）网络中提高多播状态生成的效率的系统和方法。技术包括对SPB网络使用具有新的多播状态计算规则的IS-IS TLV结构。 SPB网络使用用于I-SID地址（以及不同IETF / IEEE草案中定义的等价TLV字段）和节点昵称的TLV字段来信号，用于计算用于在给定SPB网络上提供L2服务所需的组播状态的信息。 I-SID地址TLV被设置或填充以携带各种信息。这些信息项可以包括骨干媒体访问控制（B-MAC），虚拟局域网标识符（VID），I-SID [发送，接收位]等。

3. 发明申请

US20140112188A1 Architecture For Virtualization And Distribution Of Routing Information Used In A Transport Network 有权
标题翻译：用于传输网络中路由信息的虚拟化和分发的架构
公开(公告)号：US20140112188A1
公开(公告)日：2014-04-24
申请号：US13656862
申请日：2012-10-22
申请人： Srikanth Keesara , Rama Suryanarayana Appala , Gautam Khera
发明人： Srikanth Keesara , Rama Suryanarayana Appala , Gautam Khera
IPC分类号： H04L12/28
CPC分类号： H04L45/16 , H04L45/02 , H04L45/04 , H04L45/12 , H04L45/48
摘要： A method, apparatus and computer program product for distribution of routing information used in a transport network is presented. In a transport network having a plurality of edge devices and core devices, a main instance of a protocol is used for shortest path and tree computation. A multicast tree is defined per Virtual Services Network (VSN) to distribute Link State Data Base (LSDB) updates that only apply to members of said VSN. Multicast trees are built using a secondary instance of the control protocol LSDB and wherein each VSN multicast tree represents a separate instance of the secondary instance of the control protocol LSD. LSDB updates are distributed that only apply to members of the VSN using the multicast tree for the VSN.
摘要翻译：提出了一种用于分发在传输网络中使用的路由信息的方法，装置和计算机程序产品。在具有多个边缘设备和核心设备的传输网络中，协议的主要实例用于最短路径和树计算。每个虚拟服务网络（VSN）定义多播树，以分发仅适用于所述VSN的成员的链路状态数据库（LSDB）更新。使用控制协议LSDB的辅助实例构建组播树，其中每个VSN组播树表示控制协议LSD的辅助实例的单独实例。分布式LSDB更新仅适用于使用VSN的组播树的VSN成员。

4. 发明授权

US09413637B2 Architecture for virtualization and distribution of routing information used in a transport network 有权
标题翻译：用于传输网络中使用的路由信息的虚拟化和分发的架构
公开(公告)号：US09413637B2
公开(公告)日：2016-08-09
申请号：US13656862
申请日：2012-10-22
申请人： Srikanth Keesara , Rama Suryanarayana Appala , Gautam Khera
发明人： Srikanth Keesara , Rama Suryanarayana Appala , Gautam Khera
IPC分类号： H04L12/761 , H04L12/751 , H04L12/715 , H04L12/721 , H04L12/753
CPC分类号： H04L45/16 , H04L45/02 , H04L45/04 , H04L45/12 , H04L45/48
摘要： A method, apparatus and computer program product for distribution of routing information used in a transport network is presented. In a transport network having a plurality of edge devices and core devices, a main instance of a protocol is used for shortest path and tree computation. A multicast tree is defined per Virtual Services Network (VSN) to distribute Link State Data Base (LSDB) updates that only apply to members of said VSN. Multicast trees are built using a secondary instance of the control protocol LSDB and wherein each VSN multicast tree represents a separate instance of the secondary instance of the control protocol LSD. LSDB updates are distributed that only apply to members of the VSN using the multicast tree for the VSN.
摘要翻译：提出了一种用于分发在传输网络中使用的路由信息的方法，装置和计算机程序产品。在具有多个边缘设备和核心设备的传输网络中，协议的主要实例用于最短路径和树计算。每个虚拟服务网络（VSN）定义多播树，以分发仅适用于所述VSN的成员的链路状态数据库（LSDB）更新。使用控制协议LSDB的辅助实例构建组播树，其中每个VSN组播树表示控制协议LSD的辅助实例的单独实例。分布式LSDB更新仅适用于使用VSN的组播树的VSN成员。

5. 发明授权

US08830998B2 Separation of edge and routing/control information for multicast over shortest path bridging 有权
标题翻译：通过最短路径桥接分离边缘和路由/控制信息进行组播
公开(公告)号：US08830998B2
公开(公告)日：2014-09-09
申请号：US13242422
申请日：2011-09-23
申请人： Srikanth Keesara , Gautam Khera , Rama Apalla
发明人： Srikanth Keesara , Gautam Khera , Rama Apalla
IPC分类号： H04L12/28
CPC分类号： H04L45/66
摘要： Techniques disclosed herein include systems and methods for providing a scalable solution to transmit edge IP Multicast sender information in a Shortest Path Bridging (SPB) network. Control information is exchanged between Ingress Backbone Edge Bridges and Egress Backbone Edge Bridges Such control messages do not cause path computations at Backbone Core Bridges within the SPB network. Such exchanges of control messages trigger sending SPB specific Intermediate System To Intermediate System (IS-IS) TLV control message with path computation information via IS-IS control messages. This second set of control messages is exchanged within the SPB network and includes source-specific multicast stream information that is used by Backbone Core Bridges to establish a multicast forward state and compute multicast forwarding paths. By separating edge and routing information, IP multicasting functionality within the SPB is provided while enabling scaling and new edge multicasting applications.
摘要翻译：本文公开的技术包括用于提供可扩展解决方案以在最短路径桥接（SPB）网络中传送边缘IP多播发送者信息的系统和方法。 Ingress Backbone Edge Bridges与出口Backbone Edge Bridge之间交换控制信息这样的控制消息不会在SPB网络内的Backbone Core Bridges处引起路径计算。这种交换控制消息通过IS-IS控制消息触发发送SPB特定的具有路径计算信息的中间系统到中间系统（IS-IS）TLV控制消息。该第二组控制消息在SPB网络内进行交换，包括由Backbone Core Bridges用于建立组播转发状态并计算组播转发路径的源特定组播流信息。通过分离边缘和路由信息，提供SPB内的IP组播功能，同时实现缩放和新的边缘多播应用。

6. 发明授权

US08743875B2 Extension of the interpretation and definition of the IS-IS TLV/sub-TLV 有权
标题翻译：扩展IS-IS TLV / sub-TLV的解释和定义
公开(公告)号：US08743875B2
公开(公告)日：2014-06-03
申请号：US13242250
申请日：2011-09-23
申请人： Gautam Khera , Srikanth Keesara , Rama Apalla
发明人： Gautam Khera , Srikanth Keesara , Rama Apalla
IPC分类号： H04L12/28
CPC分类号： H04L45/16 , H04L12/4625 , H04L45/66
摘要： Techniques disclosed herein include systems and methods for improving efficiency of multicast state generation within Shortest Path Bridging (SPB) networks. Techniques include using an IS-IS TLV structure with new multicast state computation rules for SPB Networks. SPB Networks use a TLV field for the I-SID Address (and equivalent TLV fields defined in different IETF/IEEE drafts) and node nicknames to signal information that is used to compute a multicast state required to provide L2 Services over a given SPB Network. The I-SID Address TLV is set or filled to carry various items of information. These items of information can include Backbone Media Access Control (B-MAC), Virtual Local Area Network Identifier (VID), I-SID[Transmit, Receive Bit], etc.
摘要翻译：本文公开的技术包括用于在最短路径桥接（SPB）网络中提高多播状态生成的效率的系统和方法。技术包括对SPB网络使用具有新的多播状态计算规则的IS-IS TLV结构。 SPB网络使用用于I-SID地址（以及不同IETF / IEEE草案中定义的等价TLV字段）和节点昵称的TLV字段来信号，用于计算用于在给定SPB网络上提供L2服务所需的组播状态的信息。 I-SID地址TLV被设置或填充以携带各种信息。这些信息项可以包括骨干媒体访问控制（B-MAC），虚拟局域网标识符（VID），I-SID [发送，接收位]等。

7. 发明授权

US07506428B2 Ion mill process with sacrificial mask layer to fabricate pole tip for perpendicular recording 失效
标题翻译：离子磨工艺用牺牲掩模层制造极尖用于垂直记录
公开(公告)号：US07506428B2
公开(公告)日：2009-03-24
申请号：US10676728
申请日：2003-09-30
申请人： Daniel Wayne Bedell , Tom King Harris, III , Gautam Khera , Quang Le , Aron Pentek
发明人： Daniel Wayne Bedell , Tom King Harris, III , Gautam Khera , Quang Le , Aron Pentek
IPC分类号： G11B5/187
CPC分类号： G11B5/33 , Y10T29/49041 , Y10T29/49043 , Y10T29/49046 , Y10T29/4906
摘要： A method of fabrication of the write head of a perpendicular recording head allows for production of P3 pole tips of width less than 200 nm (200×10−9 meters). The method includes fabricating the P2 flux shaping layer, depositing the P3 layer, depositing a layer of ion-milling resistant material, depositing at least one sacrificial layer, shaping the P3 layer into P3 pole tip, removing the at least one sacrificial layer to leave the P3 pole tip, and encapsulating the P3 pole tip.
摘要翻译：制造垂直记录头的写入头的方法允许制造宽度小于200nm（200x10-9米）的P3极尖。该方法包括制造P2通量成形层，沉积P3层，沉积抗离子碾磨材料层，沉积至少一个牺牲层，将P3层成形为P3极尖，去除至少一个牺牲层以离开 P3极尖，并封装P3极尖。

8. 发明授权

US07185415B2 Method for forming a magnetic head having a flux shaping layer 有权
标题翻译：用于形成具有通量成形层的磁头的方法
公开(公告)号：US07185415B2
公开(公告)日：2007-03-06
申请号：US10653046
申请日：2003-08-29
申请人： Gautam Khera , Sanford J. Lewis , Galina Moutchaidze , Aron Pentek , Hugo Alberto Emilio Santini , Mason Lamar Williams, III
发明人： Gautam Khera , Sanford J. Lewis , Galina Moutchaidze , Aron Pentek , Hugo Alberto Emilio Santini , Mason Lamar Williams, III
IPC分类号： H04R31/00 , G11B5/147
CPC分类号： G11B5/3163 , G11B5/1278 , G11B5/3116 , Y10T29/49025 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49052
摘要： A method for fabricating a magnetic head includes forming a first pole and a flux shaping layer in spaced relation to the first pole. A nonmagnetic layer is formed adjacent the flux shaping layer and positioned on an air bearing surface (ABS) side of the flux shaping layer. A tapered recess is created in the nonmagnetic layer, the taper of the recess increasing (i.e., becoming deeper) towards the flux forming layer. The recess is filled with a magnetic material. A probe layer is formed such that it is in electrical communication with the magnetic material filling the recess.
摘要翻译：用于制造磁头的方法包括形成与第一极间隔开的第一极和磁通形成层。在磁通形成层附近形成非磁性层，并定位在磁通形成层的空气轴承表面（ABS）侧。在非磁性层中产生锥形凹部，凹部的锥形朝向焊剂形成层增加（即变深）。凹部填充有磁性材料。探针层形成为使得其与填充凹部的磁性材料电连通。

9. 发明授权

US07031121B2 Perpendicular recording magnetic head with a write shield magnetically coupled to a first pole piece 失效
标题翻译：具有与第一极片磁耦合的写入屏蔽的垂直记录磁头
公开(公告)号：US07031121B2
公开(公告)日：2006-04-18
申请号：US10631642
申请日：2003-07-30
申请人： Gautam Khera , Quang Le , Son Van Nguyen , Aron Pentek , Mason Lamar Williams, III
发明人： Gautam Khera , Quang Le , Son Van Nguyen , Aron Pentek , Mason Lamar Williams, III
IPC分类号： G11B5/127 , G11B5/11
CPC分类号： G11B5/127 , G11B5/1278 , G11B5/31 , G11B5/3153 , G11B5/3176 , G11B5/33
摘要： A perpendicular recording write head has ferromagnetic first and second pole pieces which are connected at a back gap and an insulation stack with a write coil layer embedded therein is located between the first and second pole pieces and between a head surface of the write head and the back gap. The second pole piece has a pole tip which is located at the head surface and a recessed ferromagnetic write shield layer. A nonmagnetic isolation layer is located between the second pole piece and the write shield layer and at least one ferromagnetic stud is magnetically connected between the first pole piece layer and the write shield layer and is located between the head surface and the insulation stack.
摘要翻译：垂直记录写头具有在后隙连接的铁磁第一和第二极片，并且其中嵌有写入线圈层的绝缘堆叠位于第一和第二极靴之间以及写头的头表面和背隙。第二极片具有位于头表面的极尖和凹陷的铁磁写屏蔽层。非磁性隔离层位于第二极靴和写入屏蔽层之间，并且至少一个铁磁螺柱磁性地连接在第一极靴层和写入屏蔽层之间，并位于头部表面和绝缘堆叠之间。

10. 发明申请

US20050066517A1 Ion mill process with sacrificial mask layer to fabricate pole tip for perpendicular recording 失效
标题翻译：离子磨工艺用牺牲掩模层制造极尖用于垂直记录
公开(公告)号：US20050066517A1
公开(公告)日：2005-03-31
申请号：US10676728
申请日：2003-09-30
申请人： Daniel Bedell , Tom Harris , Gautam Khera
发明人： Daniel Bedell , Tom Harris , Gautam Khera
IPC分类号： G11B5/33 , G11B5/127
CPC分类号： G11B5/33 , Y10T29/49041 , Y10T29/49043 , Y10T29/49046 , Y10T29/4906
摘要： A method of fabrication of the write head of a perpendicular recording head allows for production of P3 pole tips of width less than 200 nm (200×10−9 meters). The method includes fabricating the P2 flux shaping layer, depositing the P3 layer, depositing a layer of ion-milling resistant material, depositing at least one sacrificial layer, shaping the P3 layer into P3 pole tip, removing the at least one sacrificial layer to leave the P3 pole tip, and encapsulating the P3 pole tip.
摘要翻译：制造垂直记录头的写入头的方法允许制造宽度小于200nm（200×10 -9米）的P3极尖。该方法包括制造P2通量成形层，沉积P3层，沉积抗离子碾磨材料层，沉积至少一个牺牲层，将P3层成形为P3极尖，去除至少一个牺牲层以离开 P3极尖，并封装P3极尖。

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