公开(公告)号：US20130182585A1

公开(公告)日：2013-07-18

申请号：US13351020

申请日：2012-01-16

Applicant: Abhishek Chaudhary ,  Gustav Karl Larsson ,  Jonathan T. Sewter ,  Feng Ling ,  Michael J. Wingrove

Inventor： Abhishek Chaudhary ,  Gustav Karl Larsson ,  Jonathan T. Sewter ,  Feng Ling ,  Michael J. Wingrove

IPC: H04L12/28 ,  H04L12/26 ,  H04L12/56

CPC classification number: H04L41/0896 ,  H04L43/0811 ,  H04L43/0829

Abstract: A system includes a plurality of modules, a backplane communicatively coupled to the plurality of modules, a plurality of links defined between the plurality of modules over the backplane, and a link management system configured to dynamically manage parameters associated with each of the plurality of links A link management method includes, for a system, defining a codebook for each module, device, and interconnect in the system, the codebook includes data describing physical link topologies and configuration parameters associated therewith, for initializing a link in the system, obtaining appropriate codebooks for each segment in the link, calculating an overall link loss for the link based on data in the appropriate codebooks, and obtaining configuration parameters for the link based on the overall link loss.

Abstract translation: 系统包括多个模块，通信地耦合到多个模块的背板，在背板之间在多个模块之间定义的多个链路，以及链路管理系统，被配置为动态地管理与多个链路中的每一个相关联的参数 链路管理方法包括：对于系统，为系统中的每个模块，设备和互连定义码本，码本包括描述与之相关联的物理链路拓扑和配置参数的数据，用于初始化系统中的链路，获得适当的码本 对于链路中的每个段，基于适当的码本中的数据计算链路的总链路损耗，并且基于整个链路损耗获得链路的配置参数。

公开(公告)号：US20120137187A1

公开(公告)日：2012-05-31

申请号：US12954907

申请日：2010-11-28

Applicant: Sandeep Jain ,  Abhishek Chaudhary ,  Supreet Jeloka

Inventor： Sandeep Jain ,  Abhishek Chaudhary ,  Supreet Jeloka

IPC: G01R31/3177 ,  G06F11/25

CPC classification number: G01R31/318566

Abstract: A system for scan testing an IC includes one or more scan registers, one or more scan-in pads, one or more scan-out pads, and one or more comparators. Scan test data is transmitted from the scan-in pads to the scan registers. The functional response obtained from the scan test is transmitted to the comparator. The scan-out pad transmits the expected data to the comparator. The comparator compares the expected data and the functional response data and the comparison result is stored. The test result data is transmitted at positive and negative edges of the test clock signal.

Abstract translation: 用于对IC进行扫描测试的系统包括一个或多个扫描寄存器，一个或多个扫描焊盘，一个或多个扫描输出焊盘和一个或多个比较器。 扫描测试数据从扫描焊盘传输到扫描寄存器。 从扫描测试获得的功能响应被传送到比较器。 扫描输出板将期望的数据发送到比较器。 比较器比较预期数据和功能响应数据，并存储比较结果。 测试结果数据在测试时钟信号的正和负边沿传输。

公开(公告)号：US20140186019A1

公开(公告)日：2014-07-03

申请号：US13728011

申请日：2012-12-27

Applicant: Abhishek Chaudhary ,  Hongxing Meng ,  Satish Gopalakrishna

Inventor： Abhishek Chaudhary ,  Hongxing Meng ,  Satish Gopalakrishna

IPC: H04B10/032

CPC classification number: H04B10/032 ,  H04J3/14 ,  H04J3/1611 ,  H04J3/1652 ,  H04J2203/0051 ,  H04J2203/006 ,  H04Q11/0067 ,  H04Q2011/0081

Abstract: A method, a network, and a node each implement the transmission of Automatic Protection Switching (APS) switching coordination bytes across an OTN network. A working signal and a protection signal are received, one of which is designated as an active signal. The active signal is encapsulated in an Optical channel Data Unit (ODU) signal. APS switching coordination bytes from the working and protection signals are placed in an overhead segment of the ODU signal. The ODU signal is transmitted into and received from an Optical Transport Network (OTN) network. The working and protection signals are recreated based on the active signal encapsulated in the ODU signal and the APS switching coordination bytes in the overhead segment. The recreated working and protection signals are transmitted. In this manner, a single ODU signal may be used to transmit both the working and protection signals.

Abstract translation: 一种方法，一个网络和一个节点在OTN网络中实现自动保护倒换（APS）交换协调字节的传输。 接收工作信号和保护信号，其中一个被指定为有效信号。 活动信号被封装在光通道数据单元（ODU）信号中。 来自工作和保护信号的APS交换协调字节被放置在ODU信号的开销段中。 ODU信号被发送到光传输网络（OTN）网络并从光传输网络接收。 基于封装在ODU信号中的有源信号和开销段中的APS交换协调字节来重新创建工作和保护信号。 重新发送的工作和保护信号被传输。 以这种方式，可以使用单个ODU信号来传送工作和保护信号。

公开(公告)号：US08458541B2

公开(公告)日：2013-06-04

申请号：US13071512

申请日：2011-03-25

Applicant: Sandeep Jain ,  Nikila Krishnamoorthy ,  Abhishek Chaudhary ,  Nipun Mahajan ,  Saurabh Chauhan

Inventor： Sandeep Jain ,  Nikila Krishnamoorthy ,  Abhishek Chaudhary ,  Nipun Mahajan ,  Saurabh Chauhan

IPC: G01R31/28

CPC classification number: G01R31/318547 ,  G01R31/318558

Abstract: Scan chains are used to detect faults in integrated circuits but with the size of today's circuits, it is difficult to detect and locate scan chain faults, especially when the scan data in and scan data out have been compressed. A method for debugging scan chains includes selecting a scan chain for debugging using a scan chain selection block and then providing scan test vectors to the selected scan chain. The scan test vectors undergo various scan test stages to generate scan response vectors. The scan response vectors are compared with ideal response vectors to identify a failing scan chain.

Abstract translation: 扫描链用于检测集成电路中的故障，但随着当今电路的大小，难以检测和定位扫描链故障，特别是当扫描数据输入和扫描数据输出被压缩时。 用于调试扫描链的方法包括使用扫描链选择块选择用于调试的扫描链，然后向所选择的扫描链提供扫描测试向量。 扫描测试矢量经历各种扫描测试阶段以产生扫描响应矢量。 将扫描响应向量与理想响应向量进行比较，以识别故障扫描链。

公开(公告)号：US07512674B1

公开(公告)日：2009-03-31

申请号：US10603995

申请日：2003-06-26

Applicant: Chetan Jain ,  Ying Wang ,  Abhishek Chaudhary ,  Rajagopalan Kannan ,  Tong Luo ,  Meera Sundaram ,  Jiang Zhu ,  Rajasekar Venkatesan

Inventor： Chetan Jain ,  Ying Wang ,  Abhishek Chaudhary ,  Rajagopalan Kannan ,  Tong Luo ,  Meera Sundaram ,  Jiang Zhu ,  Rajasekar Venkatesan

IPC: G06F15/173

CPC classification number: G06F15/16

Abstract: A framework is disclosed which enables a management system to manage completely different type of network elements (NEs) running different versions of their embedded software by introducing generic operational interfaces, generic data interfaces, information descriptors and self adaptive control mechanism. This Management system framework consists of mainly two parts a) core application and b) element-dependent components and c) a set of generic interfaces. When the management system is launched, it executes the core application. The core application comprises of network element independent version independent generic functionalities that can be used to interact with a variety of network elements and a dynamic control mechanism to make selection and placement of pluggable components at appropriate time and place during execution. After the core application is executed, whenever a need to manage one or more network elements, self adaptive control mechanism will take decision based on information descriptor of that target NE and NE type dependent version dependent modules are incorporated or “plugged in” with core application to produce an overall management mechanism to manage that target NE.

Abstract translation: 公开了一种框架，其使得管理系统能够通过引入通用操作界面，通用数据接口，信息描述符和自适应控制机制来管理运行不同版本的嵌入式软件的完全不同类型的网元（NE）。 该管理系统框架主要包括两部分：a）核心应用程序和b）元素相关组件，c）一组通用接口。 管理系统启动时，执行核心应用。 核心应用包括可用于与各种网络元件交互的独立于网元的独立版本的通用功能，以及动态控制机制，以便在执行期间在适当的时间和地点进行可插拔组件的选择和放置。 在执行核心应用后，无论何时需要管理一个或多个网元，自适应控制机制将根据该目标网元的信息描述符进行决策，依赖于NE的依赖型版本的模块与核心应用程序相结合或“插入” 形成管理目标网络的整体管理机制。

公开(公告)号：US08958701B2

公开(公告)日：2015-02-17

申请号：US13728011

申请日：2012-12-27

Applicant: Abhishek Chaudhary ,  Hongxing Meng ,  Satish Gopalakrishna

Inventor： Abhishek Chaudhary ,  Hongxing Meng ,  Satish Gopalakrishna

IPC: G02F1/00 ,  G02F2/00 ,  H01S3/00 ,  H04B10/00 ,  H04J14/00 ,  H04B10/04 ,  H04B10/12 ,  H04B10/032

CPC classification number: H04B10/032 ,  H04J3/14 ,  H04J3/1611 ,  H04J3/1652 ,  H04J2203/0051 ,  H04J2203/006 ,  H04Q11/0067 ,  H04Q2011/0081

Abstract: A method, a network, and a node each implement the transmission of Automatic Protection Switching (APS) switching coordination bytes across an OTN network. A working signal and a protection signal are received, one of which is designated as an active signal. The active signal is encapsulated in an Optical channel Data Unit (ODU) signal. APS switching coordination bytes from the working and protection signals are placed in an overhead segment of the ODU signal. The ODU signal is transmitted into and received from an Optical Transport Network (OTN) network. The working and protection signals are recreated based on the active signal encapsulated in the ODU signal and the APS switching coordination bytes in the overhead segment. The recreated working and protection signals are transmitted. In this manner, a single ODU signal may be used to transmit both the working and protection signals.

Abstract translation: 一种方法，一个网络和一个节点在OTN网络中实现自动保护倒换（APS）交换协调字节的传输。 接收工作信号和保护信号，其中一个被指定为有效信号。 活动信号被封装在光通道数据单元（ODU）信号中。 来自工作和保护信号的APS交换协调字节被放置在ODU信号的开销段中。 ODU信号被发送到光传输网络（OTN）网络并从光传输网络接收。 基于封装在ODU信号中的有源信号和开销段中的APS交换协调字节来重新创建工作和保护信号。 重新发送的工作和保护信号被传输。 以这种方式，可以使用单个ODU信号来传送工作和保护信号。

公开(公告)号：US20120246531A1

公开(公告)日：2012-09-27

申请号：US13071512

申请日：2011-03-25

Applicant: Sandeep Jain ,  Nikila Krishnamoorthy ,  Abhishek Chaudhary ,  Nipun Mahajan ,  Saurabh Chauhan

Inventor： Sandeep Jain ,  Nikila Krishnamoorthy ,  Abhishek Chaudhary ,  Nipun Mahajan ,  Saurabh Chauhan

IPC: G01R31/28 ,  G06F11/00

CPC classification number: G01R31/318547 ,  G01R31/318558

Abstract: Scan chains are used to detect faults in integrated circuits but with the size of today's circuits, it is difficult to detect and locate scan chain faults, especially when the scan data in and scan data out have been compressed. A method for debugging scan chains includes selecting a scan chain for debugging using a scan chain selection block and then providing scan test vectors to the selected scan chain. The scan test vectors undergo various scan test stages to generate scan response vectors. The scan response vectors are compared with ideal response vectors to identify a failing scan chain.

Abstract translation: 扫描链用于检测集成电路中的故障，但随着当今电路的大小，难以检测和定位扫描链故障，特别是当扫描数据输入和扫描数据输出被压缩时。 用于调试扫描链的方法包括使用扫描链选择块选择用于调试的扫描链，然后向所选择的扫描链提供扫描测试向量。 扫描测试矢量经历各种扫描测试阶段以产生扫描响应矢量。 将扫描响应向量与理想响应向量进行比较，以识别故障扫描链。

公开(公告)号：US09148345B2

公开(公告)日：2015-09-29

申请号：US13351020

申请日：2012-01-16

Applicant: Abhishek Chaudhary ,  Gustav Karl Larsson ,  Jonathan T. Sewter ,  Feng Ling ,  Michael J. Wingrove

Inventor： Abhishek Chaudhary ,  Gustav Karl Larsson ,  Jonathan T. Sewter ,  Feng Ling ,  Michael J. Wingrove

IPC: G01R31/08 ,  H04L12/24 ,  H04L12/26

CPC classification number: H04L41/0896 ,  H04L43/0811 ,  H04L43/0829

Abstract: A system includes a plurality of modules, a backplane communicatively coupled to the plurality of modules, a plurality of links defined between the plurality of modules over the backplane, and a link management system configured to dynamically manage parameters associated with each of the plurality of links. A link management method includes, for a system, defining a codebook for each module, device, and interconnect in the system, the codebook includes data describing physical link topologies and configuration parameters associated therewith, for initializing a link in the system, obtaining appropriate codebooks for each segment in the link, calculating an overall link loss for the link based on data in the appropriate codebooks, and obtaining configuration parameters for the link based on the overall link loss.

Abstract translation: 系统包括多个模块，通信地耦合到多个模块的背板，在背板之间在多个模块之间定义的多个链路，以及链路管理系统，被配置为动态地管理与多个链路中的每一个相关联的参数 。 链路管理方法包括：对于系统，为系统中的每个模块，设备和互连定义码本，码本包括描述与之相关联的物理链路拓扑和配置参数的数据，用于初始化系统中的链路，获得适当的码本 对于链路中的每个段，基于适当的码本中的数据计算链路的总链路损耗，并且基于整个链路损耗获得链路的配置参数。

公开(公告)号：US08953948B2

公开(公告)日：2015-02-10

申请号：US13302791

申请日：2011-11-22

Applicant: Hongxing Meng ,  Abhishek Chaudhary ,  Gustav Karl Larsson ,  Saravanan Purushothaman

Inventor： Hongxing Meng ,  Abhishek Chaudhary ,  Gustav Karl Larsson ,  Saravanan Purushothaman

IPC: H04B10/00 ,  H04J3/06 ,  H04J3/16

CPC classification number: H04J3/0682 ,  H04J3/1652 ,  H04J2203/006

Abstract: The present disclosure provides to Optical Transport Network (OTN_ synchronization systems and methods that maintain proper sequential ordering of events at nodes which may be utilized in performing root cause analysis or diagnosing network performance. In an exemplary embodiment, the systems and methods utilize functionality incorporated into OTN providing a cost effective and standards-based approach to nodal synchronization. Once synchronized, network events are logged with an appropriate timestamp enabling a determination of a sequential order of network events can be determined. Further, the node timestamps may be synchronized, with microsecond or even sub-microsecond of precession which is critical in diagnosing network failures or slow traffic recovery.

Abstract translation: 本公开提供了一种光传输网络（OTN_同步系统和方法，其保持节点处的事件的适当顺序排序，其可以用于执行根本原因分析或诊断网络性能。在示例性实施例中，系统和方法利用并入 OTN提供了节省成本和基于标准的节点同步方法，一旦同步，就可以使用适当的时间戳记录网络事件，从而可以确定网络事件的顺序顺序，此外，节点时间戳可以与微秒同步 甚至亚微秒的进动，这对诊断网络故障或缓慢的流量恢复至关重要。

公开(公告)号：US20130129345A1

公开(公告)日：2013-05-23

申请号：US13302791

申请日：2011-11-22

Applicant: Hongxing MENG ,  Abhishek CHAUDHARY ,  Gustav Karl LARSSON ,  Saravanan PURUSHOTHAMAN

Inventor： Hongxing MENG ,  Abhishek CHAUDHARY ,  Gustav Karl LARSSON ,  Saravanan PURUSHOTHAMAN

IPC: H04B10/08

CPC classification number: H04J3/0682 ,  H04J3/1652 ,  H04J2203/006

Abstract: The present disclosure provides to Optical Transport Network (OTN_ synchronization systems and methods that maintain proper sequential ordering of events at nodes which may be utilized in performing root cause analysis or diagnosing network performance. In an exemplary embodiment, the systems and methods utilize functionality incorporated into OTN providing a cost effective and standards-based approach to nodal synchronization. Once synchronized, network events are logged with an appropriate timestamp enabling a determination of a sequential order of network events can be determined. Further, the node timestamps may be synchronized, with microsecond or even sub-microsecond of precession which is critical in diagnosing network failures or slow traffic recovery.

Abstract translation: 本公开提供了一种光传输网络（OTN_同步系统和方法，其保持节点处的事件的适当顺序排序，其可以用于执行根本原因分析或诊断网络性能。在示例性实施例中，系统和方法利用并入 OTN提供了节省成本和基于标准的节点同步方法，一旦同步，就可以使用适当的时间戳记录网络事件，从而可以确定网络事件的顺序顺序，此外，节点时间戳可以与微秒同步 甚至亚微秒的进动，这对诊断网络故障或缓慢的流量恢复至关重要。