公开(公告)号：US09473244B2

公开(公告)日：2016-10-18

申请号：US14514952

申请日：2014-10-15

Applicant: NEC Laboratories America, Inc.

Inventor： Shaoliang Zhang ,  Fatih Yaman

IPC: H04L27/34 ,  H04B10/40 ,  H04L27/36 ,  H04L1/00 ,  H04L27/00 ,  H04L27/26 ,  H03M13/25 ,  H04L25/03

CPC classification number: H04B10/40 ,  H03M13/256 ,  H04B10/541 ,  H04B10/612 ,  H04L1/0041 ,  H04L1/006 ,  H04L25/03834 ,  H04L27/0008 ,  H04L27/2628 ,  H04L27/34 ,  H04L27/362

Abstract: A method of transmitting a data signal is provided that includes integrating a trellis encoder/decoder into a transmitter for 16 quadrative amplitude modulation (QAM) to provide a first and second mode of modulation, wherein each mode has a same baud rate. Data is transmitted from the transmitter at the first mode of modulation with a plurality of first subcarriers with DP16QAM modulation to provide a substantially 400G data transmission rate, or data is transmitted from the transmitter at the second mode of modulation with a plurality of second subcarriers with trellis coded modulation to provide a substantially 1T data transmission rate.

Abstract translation: 提供了一种发送数据信号的方法，其包括将网格编码器/解码器集成到用于16次方振幅调制（QAM）的发射机中以提供第一和第二调制方式，其中每个模式具有相同的波特率。 在具有DP16QAM调制的多个第一子载波的第一调制方式下，从发射机发送数据以提供基本上400G的数据传输速率，或者以第二调制方式从发射机发送数据， 网格编码调制以提供基本上1T的数据传输速率。

公开(公告)号：US09471500B2

公开(公告)日：2016-10-18

申请号：US14251288

申请日：2014-04-11

Applicant: NEC Laboratories America, Inc.

Inventor： Erik Kruus ,  Cristian Ungureanu ,  Wen Xia

IPC: G06F12/08

CPC classification number: G06F12/0871

Abstract: Systems and methods for generating and storing a data structure for maintaining cache supporting compression and cache-wide deduplication, including generating data structures with fixed size memory regions configured to hold multiple signatures as keys, wherein the number of the fixed size memory regions is bounded. A first mapping is generated from short-length signatures to a storage location and a quantized length measure on a cache storage device; and unused contiguous regions on the cache device are allocated. Metadata and cache page content is retrieved using a single input/output operation; a correctness of a full value of hash functions of uncompressed cache page content is validated; a second mapping is generated from short-length signatures to entries in the first mapping; and verification of whether the cached page content corresponds to a full-length original logical block address using the metadata is performed.

Abstract translation: 用于生成和存储用于维持缓存支持压缩和高速缓存的重复数据消除的数据结构的系统和方法，包括生成具有被配置为将多个签名保持为密钥的固定大小的存储器区域的数据结构，其中固定大小的存储器区域的数量是有界的。 从缓存存储设备的短长度签名到存储位置和量化长度测量生成第一映射; 并且分配高速缓存设备上的未使用的连续区域。 使用单个输入/输出操作检索元数据和缓存页面内容; 验证非压缩缓存页面内容的哈希函数的完整值的正确性; 从第一映射中的短长度签名到条目生成第二映射; 并且执行使用元数据对缓存的页面内容是否对应于全长的原始逻辑块地址的验证。

公开(公告)号：US09471461B2

公开(公告)日：2016-10-18

申请号：US14227481

申请日：2014-03-27

Applicant: NEC Laboratories America, Inc.

Inventor： Jungwhan Rhee ,  Hui Zhang ,  Nipun Arora ,  Guofei Jiang ,  Qiang Zeng

IPC: G06F9/44 ,  G06F11/34

CPC classification number: G06F11/3466 ,  G06F2201/865

Abstract: A computer implemented method for maintaining a program's calling context correct even when a monitoring of the program goes out of a scope of a program analysis by validating function call transitions and recovering partial paths before and after the violation of the program's control flow. The method includes detecting a violation of control flow invariants in the software system including validating a source and destination of a function call in the software system, interpreting a pre-violation partial path responsive to a failure of the validating, and interpreting a post violation path after a violation of program flow.

Abstract translation: 即使当程序的监视超出程序分析的范围时，通过验证功能调用转换并在违反程序的控制流程之前和之后恢复部分路径，用于维护程序的调用上下文的计算机实现的方法也是正确的。 该方法包括检测软件系统中的控制流不变量的违反，包括验证软件系统中的函数调用的源和目的地，响应于验证失败解释预先违反部分路径，以及解释后违反路径 违反程序流程后。

公开(公告)号：US20160301495A1

公开(公告)日：2016-10-13

申请号：US15089699

申请日：2016-04-04

Applicant: NEC Laboratories America, Inc.

Inventor： Philip Nan Ji ,  Ting Wang ,  Yoshiaki Aono

IPC: H04J14/02

CPC classification number: H04J14/021 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0217

Abstract: A reconfigurable optical add/drop multiplexer (ROADM) system includes a transponder aggregator section with one or more transponder aggregators; N input ports and N output ports, each coupled to the transponder aggregators and to a cross-connect module having a variable optical splitter or variable optical coupler (VOS/VOC); and a controller to set the VOS/VOC into one of a Multicast & Select configuration and a Route & Combine configuration.

Abstract translation: 可重新配置的光分插复用器（ROADM）系统包括具有一个或多个转发器聚合器的转发器聚合器部分; N个输入端口和N个输出端口，每个输出端口耦合到应答器聚合器和具有可变分光器或可变光耦合器（VOS / VOC）的交叉连接模块; 以及将VOS / VOC设置为组播＆选择配置和路由和组合配置之一的控制器。

公开(公告)号：US20160301467A1

公开(公告)日：2016-10-13

申请号：US15090642

申请日：2016-04-05

Applicant: NEC Laboratories America, Inc.

Inventor： Philip Nan Ji ,  Ting Wang ,  Ryuji Aida

IPC: H04B10/032 ,  H04B10/25 ,  H04Q11/00 ,  H04J14/02

CPC classification number: H04B10/032 ,  H04B10/2503 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0212 ,  H04J14/0216 ,  H04J14/0297 ,  H04Q11/0005 ,  H04Q2011/0043

Abstract: A communication system includes a primary module with: first trunk and branch input and output ports, each coupled to first in/out couplers, the first in/out couplers coupled to first circulators, and the circulators in turn coupled to first central couplers; second trunk branch input and output ports, each coupled to second in/out couplers, each of second in/out couplers coupled to second circulators; and first and second bidirectional wavelength-selective switches (WSSes) coupled to the first central couplers. The system also includes a secondary module with first trunk and branch input and output ports, each coupled to first in/out couplers, the first in/out couplers coupled to third circulators, and the circulators in turn coupled to second central couplers; second trunk branch input and output ports, each coupled to second in/out couplers, each of second in/out couplers coupled to fourth circulators, and third and fourth bidirectional wavelength-selective switches (WSSes) coupled to the second central couplers. The system further includes one or more 2×2 switches coupling the primary module WSS outputs with the secondary module WSS outputs.

Abstract translation: 通信系统包括主模块，其具有：第一中继线和分支输入和输出端口，每个耦合到第一进/出耦合器，耦合到第一循环器的第一输入/输出耦合器，并且循环器又耦合到第一中心耦合器; 第二中继线分支输入和输出端口，每个耦合到第二输入/输出耦合器，每个第二输入/输出耦合器耦合到第二循环器; 以及耦合到第一中心耦合器的第一和第二双向波长选择开关（WSS）。 该系统还包括具有第一干线和分支输入和输出端口的二次模块，每个耦合到第一进/出耦合器，耦合到第三循环器的第一输入/输出耦合器，并且循环器又耦合到第二中心耦合器; 第二中继分支输入和输出端口，每个耦合到第二输入/输出耦合器，耦合到第四循环器的每个第二输入/输出耦合器，以及耦合到第二中心耦合器的第三和第四双向波长选择开关（WSS）。 该系统还包括一个或多个将主模块WSS输出与次模块WSS输出耦合的2×2开关。

公开(公告)号：US20160300111A1

公开(公告)日：2016-10-13

申请号：US15088530

申请日：2016-04-01

Applicant: NEC Laboratories America, Inc.

Inventor： Eric Cosatto

IPC: G06K9/00 ,  G06K9/46 ,  G06K9/62

CPC classification number: G06K9/00718 ,  G06K9/00771 ,  G06K9/6254

Abstract: Systems and methods are disclosed for computer vision and object detection by extracting tracks of moving objects on a set of video sequences; selecting a subset of tracks for training; rendering a composite of each selected track into a single image; labeling tracks using the rendered images; training a track classifier by supervised machine learning using the labeled tracks; applying the trained track classifier to the remainder of the tracks; and selecting tracks classified with a low confidence by the classifier.

Abstract translation: 通过提取一组视频序列上的移动物体的轨迹，公开了用于计算机视觉和物体检测的系统和方法; 选择训练的轨道子集; 将每个所选轨道的复合渲染成单个图像; 使用渲染图像标记轨迹; 通过使用标记轨迹的监督机器学习训练轨道分类器; 将经训练的轨道分类器应用于轨道的其余部分; 并选择由分类器以低置信度分类的轨道。

公开(公告)号：US20160299195A1

公开(公告)日：2016-10-13

申请号：US15093263

申请日：2016-04-07

Applicant: NEC Laboratories America, Inc.

Inventor： Feng Guo ,  Ratnesh Sharma

IPC: G01R31/36 ,  H02M7/537 ,  H02M1/08 ,  H02J1/00

CPC classification number: G01R31/3648 ,  G01R31/2601 ,  G06F17/5068 ,  G06N7/02 ,  H02J1/00 ,  H02M1/08 ,  H02M7/483 ,  H02M7/537 ,  H02M2001/0054 ,  H02M2007/4835 ,  Y02B70/1491

Abstract: Systems and methods for semiconductor device selection, including identifying a worst operation condition for a plurality of semiconductor devices in a Modular Multilevel Converter (MMC). The identifying includes determining power losses for each of the semiconductor devices under a plurality of operation conditions, and calculating a maximum junction temperature for each of the plurality of semiconductor devices at each of the plurality of operation conditions. A maximum junction temperature under the identified worst operation condition is determined for each of a plurality of commercially available semiconductor devices which satisfy a threshold voltage rating, and all semiconductor devices which satisfy the threshold voltage rating and a maximum junction temperature threshold condition are compared to identify a semiconductor device with a lowest system cost.

Abstract translation: 用于半导体器件选择的系统和方法，包括识别模块化多电平转换器（MMC）中的多个半导体器件的最差工作条件。 识别包括在多个操作条件下确定每个半导体器件的功率损耗，并且在多个操作条件中的每一个处计算多个半导体器件中的每一个的最大结温。 确定满足阈值电压额定值的多个市售半导体器件中的每一个的所识别的最差工作条件下的最大结温，并且将满足阈值电压额定值和最大结温阈值条件的所有半导体器件进行比较以识别 具有最低系统成本的半导体器件。

公开(公告)号：US20160283531A1

公开(公告)日：2016-09-29

申请号：US15063157

申请日：2016-03-07

Applicant: NEC Laboratories America, Inc.

Inventor： Xusheng Xiao ,  Zhichun Li ,  Zhenyu Wu ,  Fengyuan Xu ,  Guofei Jiang

IPC: G06F17/30

CPC classification number: G06F16/24568

Abstract: A data stream system includes one or more monitored machines generating real-time data stream that describes system activities of the monitored machines; a data stream management module receiving the real-time data stream; and a data stream archiving module coupled to the data stream management module, the data stream archiving module including a data stream receiver and a data stream inserter.

Abstract translation: 数据流系统包括生成实时数据流的一个或多个监视的机器，其描述被监视机器的系统活动; 接收实时数据流的数据流管理模块; 以及耦合到数据流管理模块的数据流存档模块，数据流存档模块包括数据流接收器和数据流插入器。

公开(公告)号：US20160282821A1

公开(公告)日：2016-09-29

申请号：US15079820

申请日：2016-03-24

Applicant: NEC Laboratories America, Inc.

Inventor： Haifeng Chen ,  Tan Yan ,  Guofei Jiang

IPC: G05B13/04 ,  G06F17/18

CPC classification number: G05B13/041 ,  G06F17/18

Abstract: Systems and methods for managing one or more physical systems, including determining system behavior switching based on time series data from one or more sensors in the system. Time series is divided into a plurality of segments, and each of the segments represents a system behavior. A fitness model is generated for each of the segments to determine whether to select each of the segments as invariants, and an ensemble of local relationship models are built for each of the time series for each invariant to identify local behavior switching points over time. The identified local behavior switching points of each invariant are aggregated by aligning the local switching points of all invariant segments, computing a density distribution of the aligned switching points, and extracting local maximas of the density distribution to determine the global switching points. System operations are controlled based on the determined system behavior switching.

Abstract translation: 用于管理一个或多个物理系统的系统和方法，包括基于系统中一个或多个传感器的时间序列数据确定系统行为切换。 时间序列分为多个段，每个段表示系统行为。 为每个段生成适应度模型，以确定是否选择每个段作为不变量，并为每个不变量的每个时间序列构建一个局部关系模型的集合，以识别随时间推移的局部行为切换点。 通过对齐所有不变段的局部切换点，计算对齐的切换点的密度分布，以及提取密度分布的局部最大值来确定全局切换点来聚合每个不变量的识别的局部行为切换点。 系统操作根据所确定的系统行为切换进行控制。

公开(公告)号：US09450655B2

公开(公告)日：2016-09-20

申请号：US14496190

申请日：2014-09-25

Applicant: NEC Laboratories America, Inc.

Inventor： Narayan Prasad ,  Sampath Rangarajan ,  Guosen Yue ,  Yi Xu

IPC: H04B7/04 ,  H04L5/00

CPC classification number: H04B7/0452 ,  H04L5/0025 ,  H04L5/0035 ,  H04L5/0037 ,  H04L5/006 ,  H04L5/0062

Abstract: Methods are provided. A method includes determining respective weighted likelihoods corresponding to a plurality of users in a multiple-input multiple-output communication system. The method further includes forming a plurality of user groups from the plurality of users using an iterative K-means clustering technique applied to the plurality of users. The iterative K-means clustering technique is responsive to the respective weighted likelihoods.

Abstract translation: 提供方法。 一种方法包括确定在多输入多输出通信系统中对应于多个用户的各个加权似然度。 该方法还包括使用应用于多个用户的迭代K均值聚类技术从多个用户形成多个用户组。 迭代K均值聚类技术响应各自的加权似然度。