公开(公告)号：US08234549B2

公开(公告)日：2012-07-31

申请号：US12043348

申请日：2008-03-06

申请人： Ivan Djordjevic ,  Ting Wang ,  Lei Xu ,  Milorad Cvijetic

发明人： Ivan Djordjevic ,  Ting Wang ,  Lei Xu ,  Milorad Cvijetic

IPC分类号： H03M13/03 ,  H03M13/00

CPC分类号： H03M13/2957 ,  H03M13/1102 ,  H03M13/1111 ,  H03M13/6325 ,  H04B10/2513 ,  H04B10/2569 ,  H04B10/697

摘要： A method includes estimating quadrature amplitude modulated QAM symbols in an LDPC encoded OFDM signal for transmission, performing channel estimation by training sequence to determine channel coefficients in reception of the LDPC encoded OFDM signal; and obtaining channel information detection and decoding of the LDPC encoded signal.

摘要翻译： 一种方法包括估计用于传输的LDPC编码OFDM信号中的正交幅度调制QAM符号，通过训练序列执行信道估计，以确定在接收LDPC编码的OFDM信号中的信道系数; 并获得LDPC编码信号的信道信息检测和解码。

公开(公告)号：US08144945B2

公开(公告)日：2012-03-27

申请号：US12328375

申请日：2008-12-04

申请人： Kongqiao Wang ,  Jiangwei Li ,  Lei Xu

发明人： Kongqiao Wang ,  Jiangwei Li ,  Lei Xu

IPC分类号： G06K9/48 ,  G06K9/32 ,  G06F21/00 ,  G05B19/00

CPC分类号： G06K9/00248

摘要： A method for providing orientation independent face detection may include generating multiple mosaic images from an input image in which each of the multiple mosaic images has a different scale, employing a plurality of differently oriented edge detectors to perform edge detection on the multiple mosaic images including combining edges of the multiple mosaic images having the different scales, and performing face detection in regions corresponding to the differently oriented edge detectors based on respective feature maps produced by the differently oriented edge detectors. An apparatus and computer program product corresponding to the method are also provided.

摘要翻译： 用于提供取向独立面部检测的方法可以包括从其中每个多个马赛克图像具有不同标度的输入图像生成多个马赛克图像，其中采用多个不同方向的边缘检测器对多个马赛克图像执行边缘检测，包括组合 具有不同尺度的多个马赛克图像的边缘，以及基于由不同定向的边缘检测器产生的各个特征图，在对应于不同定向的边缘检测器的区域中执行面部检测。 还提供了一种与该方法对应的装置和计算机程序产品。

公开(公告)号：US08090271B2

公开(公告)日：2012-01-03

申请号：US12236694

申请日：2008-09-24

申请人： Dayou Qian ,  Ting Wang ,  Lei Xu ,  Philip Nan Ji

发明人： Dayou Qian ,  Ting Wang ,  Lei Xu ,  Philip Nan Ji

IPC分类号： H04B10/06

CPC分类号： H04J14/06

摘要： A differential delay detection system and method includes an optical splitter to split an incoming optical signal between a first path and a second path. The first path includes a cross-polarization interferometer configured to separately generate polarization independent outputs using split paths and to generate cross-polarization interference outputs, and a polarization demultiplexer configured to combine the polarization independent outputs and the cross-polarization interference outputs from the cross-polarization interferometer with updated coefficients received from the second path to remove the cross-polarization mixed signals. The second path includes a training signal receiver configured to compute the updated coefficients and output the updated coefficients to the polarization demultiplexer.

摘要翻译： 差分延迟检测系统和方法包括：光分路器，用于在第一路径和第二路径之间分离输入光信号。 第一路径包括交叉偏振干涉仪，其被配置为使用分离路径分开产生偏振无关的输出并产生交叉极化干扰输出;以及偏振解复用器，被配置为组合来自交叉偏振干涉输出的偏振无关输出和交叉极化干扰输出， 偏振干涉仪具有从第二路径接收的更新的系数以去除交叉极化混合信号。 第二路径包括被配置为计算更新的系数并将更新的系数输出到偏振解复用器的训练信号接收器。

公开(公告)号：US08064774B2

公开(公告)日：2011-11-22

申请号：US12117347

申请日：2008-05-08

申请人： Jianjun Yu ,  Dayou Qian ,  Lei Xu ,  Ting Wang

发明人： Jianjun Yu ,  Dayou Qian ,  Lei Xu ,  Ting Wang

IPC分类号： H04B10/00

CPC分类号： H04B10/25758

摘要： A method includes generating an optical millimeter wave signal for modulation of a first data signal, and deriving from the generated optical millimeter wave signal a subsequent light source for modulation of a second data signal. More specifically the generating includes modulating a light wave to a multiple of a frequency of an oscillating signal. Alternatively, the generating includes modulating a data signal mixed with an oscillating signal to a multiple of a frequency of the oscillating signal. The deriving includes modulating a frequency component filtered from a data modulation of the generated optical millimeter wave signal.

摘要翻译： 一种方法包括产生用于调制第一数据信号的光学毫米波信号，以及从所生成的光学毫米波信号中导出用于调制第二数据信号的后续光源。 更具体地，生成包括将光波调制到振荡信号的频率的倍数。 或者，生成包括将与振荡信号混合的数据信号调制为振荡信号的频率的倍数。 导出包括调制从产生的光学毫米波信号的数据调制滤波的频率分量。

公开(公告)号：US08064768B2

公开(公告)日：2011-11-22

申请号：US12128748

申请日：2008-05-29

申请人： Philip Nan Ji ,  Lei Xu ,  Ting Wang ,  Shuji Murakami ,  Tsutomu Tajima ,  Yutaka Yano

发明人： Philip Nan Ji ,  Lei Xu ,  Ting Wang ,  Shuji Murakami ,  Tsutomu Tajima ,  Yutaka Yano

IPC分类号： H04J14/02

CPC分类号： G02B6/29386 ,  G02B6/29335 ,  G02B6/2935 ,  G02B6/29358 ,  H04B10/25073 ,  H04J14/02

摘要： An apparatus includes an interleaver configuration for at least one of combining or separating odd and even channel groups to achieve channel density doubling; and an optical equalizer for suppressing inter symbol interference within the channels to provide intra-channel equalizing in the optical path, the equalizer being integrated into the interleaver. Preferably, optical equalizer and interleaver are integrated together as a single monolithic device, the optical equalizer includes a passband that has a dip in the channel center to achieve a raised-cosine filtering profile in the optical signal path to achieve inter-symbol interference ISI suppression, and the equalizer includes integration into the optical path of the interleaver to realize a monolithic device combining or separating odd and even channel groups to achieve channel density doubling. Preferably, also, the optical equalizer includes a first equalizer with half the depth of required ripple dips at both a first output port and an input port and a second equalizer with half the depth of required ripple dips at a second output port.

摘要翻译： 一种装置包括用于组合或分离奇数和偶数信道组中的至少一个的交织器配置，以实现信道密度倍增; 以及光学均衡器，用于抑制信道内的符号间干扰，以在光路中提供信道间均衡，均衡器被集成到交织器中。 优选地，光学均衡器和交织器作为单个单片器件集成在一起，光学均衡器包括通道，该通带在信道中心具有下降以在光信号路径中实现升余弦滤波曲线，以实现符号间干扰ISI抑制 并且均衡器包括集成到交织器的光路中，以实现组合或分离奇数和偶数信道组的单片设备，以实现信道密度加倍。 优选地，光学均衡器还包括第一均衡器，其具有在第一输出端口和输入端口处的所需波纹下降的一半深度，以及在第二输出端口处具有所需纹波下降的一半深度的第二均衡器。

公开(公告)号：US20100296739A1

公开(公告)日：2010-11-25

申请号：US12470520

申请日：2009-05-22

申请人： Jiangwei Li ,  Kongqiao Wang ,  Lei Xu

发明人： Jiangwei Li ,  Kongqiao Wang ,  Lei Xu

IPC分类号： G06K9/46

CPC分类号： G06K9/00281 ,  G06K9/4647 ,  G06K9/468

摘要： Various methods for feature extraction using local primitive code are provided. One example method includes determining an origin block within an image, an arc, an arc orientation, and a distance between the origin block and the arc. In this regard, the origin block may include one or more pixels of the image. The example method also includes determining at least one arc block. In this regard, the arc block may be located on the arc and the arc may be located with respect to the origin block based on the arc orientation and the distance. Some or all of the at least one arc blocks may include one or more pixels of the image. The example method also includes determining at least one feature value based on attributes of the origin block and the at least one arc block. Similar and related example methods and example apparatuses are also provided.

摘要翻译： 提供了使用本地原语代码进行特征提取的各种方法。 一个示例性方法包括确定图像内的原始块，弧，弧定向以及原始块和弧之间的距离。 在这方面，原始块可以包括图像的一个或多个像素。 示例性方法还包括确定至少一个弧块。 在这方面，弧形块可以位于弧形上，并且弧可以相对于原点块基于圆弧取向和距离而定位。 至少一个弧形块的一些或全部可以包括图像的一个或多个像素。 示例性方法还包括基于原始块和至少一个弧块的属性来确定至少一个特征值。 还提供了类似的和相关的示例性方法和示例设备。

公开(公告)号：US20100086314A1

公开(公告)日：2010-04-08

申请号：US12562251

申请日：2009-09-18

申请人： Jianjun Yu ,  Lei Xu ,  Dayou Qian ,  Ting Wang

发明人： Jianjun Yu ,  Lei Xu ,  Dayou Qian ,  Ting Wang

IPC分类号： H04B10/04

CPC分类号： H04B10/50

摘要： An optical apparatus includes a quadrature phase shift keying modulator for generating a non-return-to-zero quadrature phase shift keyed NRZ-QPSK signal from a received lightwave, the modulator being driven by a radio frequency RF signal, an intensity modulator for carving the NRZ-QPSK signal to return-to-zero RZ pulses with a different duty cycle than that of the NRZ-QPSK, the intensity modulator being driven by a radio frequency RF clock signal to change the NRZ-QPSK to an RZ-QPSK signal, and an optical filter with a narrow band for filtering the signal from the intensity modulator to increase optical power that is useable by an optical digital coherent detection system.

摘要翻译： 光学装置包括：正交相移键控调制器，用于从接收到的光波产生不归零正交相移键控的NRZ-QPSK信号，调制器由射频RF信号驱动;强度调制器，用于雕刻 NRZ-QPSK信号以与NRZ-QPSK的占空比不同的占空比的归零RZ脉冲，强度调制器由射频RF时钟信号驱动，以将NRZ-QPSK改变为RZ-QPSK信号， 以及具有窄带的滤光器，用于对来自强度调制器的信号进行滤波，以增加可由光学数字相干检测系统使用的光功率。

公开(公告)号：US20090297144A1

公开(公告)日：2009-12-03

申请号：US12392294

申请日：2009-02-25

申请人： Ivan B. Djordevic ,  Lei Xu ,  Ting Wang

发明人： Ivan B. Djordevic ,  Lei Xu ,  Ting Wang

IPC分类号： H04K3/00 ,  H04B10/06

CPC分类号： H04L27/3405 ,  H04B10/2569 ,  H04B10/60 ,  H04B10/697 ,  H04B2210/252 ,  H04L1/005 ,  H04L1/0631 ,  H04L1/0656 ,  H04L5/0023 ,  H04L25/067 ,  H04L27/2649 ,  H04L2025/03426 ,  H04L2025/03611

摘要： Receivers and methods are provided for polarization mode dispersion compensation in multi-level coded-modulation schemes using a BLAST algorithm and iterative polarization cancellation. A receiver includes a vertical Bell Laboratories Layered Space-Time Architecture (V-BLAST) orthogonal frequency division multiplexing (OFDM) detector configured to receive input sequences and partially cancel polarization interference with respect to the input sequences to output symbol estimates for the input sequences. The receiver further includes one or more low-density parity-check (LDPC) decoders coupled to the V-BLAST OFDM detector configured to receive channel bit reliabilities and output code words. The channel bit reliabilities are indirectly calculated from the symbol estimates. The one or more LDPC decoders iteratively provide extrinsic soft information feedback to the V-BLAST OFDM detector to compensate for the polarization interference.

摘要翻译： 为使用BLAST算法和迭代偏振消除的多电平编码调制方案中的偏振模色散补偿提供接收机和方法。 接收机包括垂直的贝尔实验室分层时空架构（V-BLAST）正交频分复用（OFDM）检测器，其被配置为接收输入序列并部分地消除相对于输入序列的偏振干扰，以输出输入序列的符号估计。 接收机还包括耦合到V-BLAST OFDM检测器的一个或多个低密度奇偶校验（LDPC）解码器，被配置为接收信道位可靠性和输出码字。 信道位可靠性是从符号估计中间接计算的。 一个或多个LDPC解码器向V-BLAST OFDM检测器反复地提供外在的软信息反馈以补偿极化干扰。

公开(公告)号：US20080319171A1

公开(公告)日：2008-12-25

申请号：US12230199

申请日：2008-08-26

申请人： Larry D. Barker ,  Brent Everett Green ,  Lei Xu

发明人： Larry D. Barker ,  Brent Everett Green ,  Lei Xu

IPC分类号： C07K14/415

CPC分类号： C07K14/415 ,  A23J1/14

摘要： Oil seed protein isolates, particularly canola protein isolate, are produced continuously from oil seed meals, preferably at a high purity level of at least about 100 wt % (Nx 6.25), by a process wherein oil seed protein is continuously extracted from oil seed meal, the resulting protein solution is continuously concentrated, preferably to a protein content of at least about 200 g/L, and the concentrated protein solution is continuously mixed with chilled water having a temperature below about 15° C. to form protein micellar, which are settled in the settling vessel to provide a protein micellar mass (PMM) while supernatant overflows the vessel. The PMM, when accumulated to a desired degree, may be separated from supernatant and dried. The supernatant may be processed to recover additional oil seed protein isolate.

摘要翻译： 油籽蛋白分离物，特别是卡诺拉蛋白分离物，通过油籽种子餐连续提取，油籽蛋白从油籽粉中连续提取的方法，优选以至少约100重量％（N×6.25）的高纯度水平连续生产， ，所得蛋白质溶液被连续浓缩，优选至少为约200g / L的蛋白质含量，并将浓缩的蛋白质溶液与温度低于约15℃的冷冻水连续混合以形成蛋白质胶束，其为 沉降在沉淀容器中以提供蛋白质胶束质量（PMM），同时上清液溢出血管。 当PMM累积到所需程度时，可以与上清液分离并干燥。 可以处理上清液以回收另外的油籽蛋白分离物。

公开(公告)号：US20080294968A1

公开(公告)日：2008-11-27

申请号：US11941747

申请日：2007-11-16

申请人： Ivan B. Djordjevic ,  Milorad Cvijetic ,  Lei Xu ,  Ting Wang

发明人： Ivan B. Djordjevic ,  Milorad Cvijetic ,  Lei Xu ,  Ting Wang

IPC分类号： H03M13/03 ,  G06F11/10

CPC分类号： H03M13/1111 ,  H03M13/255 ,  H03M13/6325

摘要： An optical communication system includes a bit-interleaved coded modulation (BICM) coder; and a low-density parity-check (LDPC) coder coupled to the BICM coder to generate codes used as component codes and in combination with a coherent detector.

摘要翻译： 光通信系统包括位交织编码调制（BICM）编码器; 以及耦合到BICM编码器的低密度奇偶校验（LDPC）编码器，以生成用作分量代码并与相干检测器组合的代码。