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    Monitoring and in-line compensation of polarization dependent loss for lightwave systems
    2.
    发明授权
    Monitoring and in-line compensation of polarization dependent loss for lightwave systems 失效
    光波系统偏振相关损耗的监测和在线补偿

    公开(公告)号：US07206517B1

    公开(公告)日：2007-04-17

    申请号：US10099875

    申请日：2002-03-15

    申请人： Qian Yu ,  Lianshan Yan ,  Alan E. Willner

    发明人： Qian Yu ,  Lianshan Yan ,  Alan E. Willner

    IPC分类号： H04B10/00

    CPC分类号： H04B10/2572

    摘要： A multi-wavelength optical signal copropagates through a fiber-optic communication link with a continuous-wave ancillary wavelength having an unknown state of polarization (SOP), which is scrambled periodically in time. The instantaneous value of polarization dependent loss (PDL) in the ancillary wavelength is monitored in real time, and is used as an error signal to adjust at least one polarization controller. Polarization scrambling is performed by periodically changing the SOP with time, such that the polarization-scrambled optical signal covers approximately an entire Poincaré sphere surface, preferably uniformly, during each time period. At an optical node between fibers, an adjustable PDL compensator contains two ordered pairs each consisting of one polarization controller and one optical element introducing fixed PDL.

    摘要翻译： 多波长光信号通过具有未知极化状态（SOP）的连续波辅助波长的光纤通信链路共同繁殖，其周期性地被加扰。 在实时监测辅助波长偏振相关损耗（PDL）的瞬时值，并用作误差信号来调节至少一个偏振控制器。 通过周期性地改变SOP随时间进行极化加扰，使得偏振加扰的光信号在每个时间段期间大致整个Poincaré球面，优选地均匀地覆盖。 在光纤之间的光节点处，可调PDL补偿器包含两个有序对，每对由一个偏振控制器和一个引入固定PDL的光学元件组成。

    MONITORING AND IN-LINE COMPENSATION OF POLARIZATION DEPENDENT LOSS FOR LIGHTWAVE SYSTEMS
    5.
    发明申请
    MONITORING AND IN-LINE COMPENSATION OF POLARIZATION DEPENDENT LOSS FOR LIGHTWAVE SYSTEMS 审中-公开
    监控和在线补偿轻型系统偏振相关损失

    公开(公告)号：US20080038000A1

    公开(公告)日：2008-02-14

    申请号：US11735859

    申请日：2007-04-16

    申请人： Qian Yu ,  Lianshan Yan ,  Alan Willner

    发明人： Qian Yu ,  Lianshan Yan ,  Alan Willner

    IPC分类号： H04B10/04 ,  H04B10/06

    CPC分类号： H04B10/2572

    摘要： A multi-wavelength optical signal copropagates through a fiber-optic communication link with a continuous-wave ancillary wavelength having an unknown state of polarization (SOP), which is scrambled periodically in time. The instantaneous value of polarization dependent loss (PDL) in the ancillary wavelength is monitored in real time, and is used as an error signal to adjust at least one polarization controller. Polarization scrambling is performed by periodically changing the SOP with time, such that the polarization-scrambled optical signal covers approximately an entire Poincaré sphere surface, preferably uniformly, during each time period. At an optical node between fibers, an adjustable PDL compensator contains two ordered pairs each consisting of one polarization controller and one optical element introducing fixed PDL.

    摘要翻译： 多波长光信号通过具有未知极化状态（SOP）的连续波辅助波长的光纤通信链路共同繁殖，其周期性地被加扰。 在实时监测辅助波长偏振相关损耗（PDL）的瞬时值，并用作误差信号来调节至少一个偏振控制器。 通过周期性地改变SOP随时间进行极化加扰，使得偏振加扰的光信号在每个时间段期间大致整个Poincaré球面，优选均匀地覆盖。 在光纤之间的光节点处，可调PDL补偿器包含两个有序对，每对由一个偏振控制器和一个引入固定PDL的光学元件组成。

    Hydraulic driven jaw-type clutch impeller combination and swimming pool bottom hydraulic pushed automatic cleaner comprising same
    6.
    发明授权
    Hydraulic driven jaw-type clutch impeller combination and swimming pool bottom hydraulic pushed automatic cleaner comprising same 有权
    液压驱动颚式离合器叶轮组合和游泳池底部液压推动自动清洁器组成

    公开(公告)号：US08555445B2

    公开(公告)日：2013-10-15

    申请号：US13499551

    申请日：2010-06-29

    申请人： Guilan Fu ,  Qian Yu ,  Jian Liu ,  Bichang Wang ,  Xinru Gong ,  Xianozhou Lv ,  Zhi Yi Zou

    发明人： Guilan Fu ,  Qian Yu ,  Changsheng Zou ,  Jian Liu ,  Bichang Wang ,  Xinru Gong ,  Xianozhou Lv

    IPC分类号： E04H4/16

    CPC分类号： E04H4/1654

    摘要： A swimming pool bottom hydraulic pushed automatic cleaner includes an underwater cleaner and a control power supply connected by a buoyancy cable. The underwater cleaner includes a housing cover, housing body, filter, double extension shaft motor assembly, hydraulic driven jaw-type clutch impeller combination, water inlet/outlet flow passage, wheel and bracket, an isolated hood and a cable with floaters. Along with the changing of the rotating direction of the motor, the impeller combination is engaged and disengaged under the action of hydraulic power to change the working state of the impeller, thereby changing water outlet of injection water flow and further changing the travel direction of the cleaner. The housing touches a wall to cause the cleaner to adjust the direction after touching the wall. Furthermore, two or more axial-flow pumps are arranged horizontally and parallelly, so that the cleaner has turning function and orderly complete coverage cleaning is realized.

    摘要翻译： 游泳池底部液压推动自动清洁器包括水下清洁器和通过浮力电缆连接的控制电源。 水下清洁器包括壳体盖，壳体，过滤器，双延伸轴电机组件，液压驱动颚式离合器叶轮组合，进水/出口流动通道，轮和支架，隔离罩和带有浮子的电缆。 随着电动机旋转方向的变化，叶轮组合在液压动力作用下接合和分离，改变了叶轮的工作状态，从而改变了注入水流的出水口，并进一步改变了 清洁器。 外壳接触墙壁，使吸尘器在接触墙壁后调整方向。 此外，两个或更多个轴流泵被水平和平行布置，使得清洁器具有转向功能并且有序地完成覆盖清洁。

    Linearization of power amplifiers through digital in-band predistortion followed by analog predistortion
    7.
    发明授权
    Linearization of power amplifiers through digital in-band predistortion followed by analog predistortion 有权
    通过数字带内预失真跟随模拟预失真来对功率放大器进行线性化

    公开(公告)号：US08548404B2

    公开(公告)日：2013-10-01

    申请号：US13250635

    申请日：2011-09-30

    申请人： Qian Yu

    发明人： Qian Yu

    IPC分类号： H03C1/62

    CPC分类号： H03F1/3241 ,  H03F1/3247 ,  H03F2200/321 ,  H04L25/03343

    摘要： A system for implementing linearization of a radio frequency (RF) power amplifier (PA) in a base station, as well as various component circuitry for implementing said system. By means of a smart partitioning of the signal processing for predistortion between the analog domain and the digital domain, a more linear relationship between the digital input data and the output RF signal is achieved. Linearization of the PA's output signal is obtained using a mixed-signal apparatus. The digital baseband signal enters the RF signal source. The RF signal source comprises an in-band predistortion circuit, a micro-controller and digital modulator. The output of the digital modulator is an RF signal that enters the PA module. The PA module is composed of the PA and the RF power amplifier linearizer (RFPAL). The RFPAL comprises an RF predistortion circuit, and RF signal analyzer and a microcontroller.

    摘要翻译： 一种用于实现基站中的射频（RF）功率放大器（PA）的线性化的系统，以及用于实现所述系统的各种组件电路。 通过对模拟域和数字域之间的预失真进行信号处理的智能划分，实现了数字输入数据与输出RF信号之间更为线性的关系。 使用混合信号装置获得PA输出信号的线性化。 数字基带信号进入RF信号源。 RF信号源包括带内预失真电路，微控制器和数字调制器。 数字调制器的输出是进入PA模块的RF信号。 PA模块由PA和RF功率放大器线性化（RFPAL）组成。 RFPAL包括RF预失真电路，RF信号分析器和微控制器。

    Tracking multiple moving targets in digital video
    8.
    发明授权
    Tracking multiple moving targets in digital video 有权
    跟踪数字视频中的多个移动目标

    公开(公告)号：US08391548B1

    公开(公告)日：2013-03-05

    申请号：US12470480

    申请日：2009-05-21

    申请人： Gerard Medioni ,  Qian Yu

    发明人： Gerard Medioni ,  Qian Yu

    IPC分类号： G06K9/00

    CPC分类号： G06K9/00771

    摘要： Tracking multiple targets can include making different observations based on multiple different frames of one or more digital video feeds, determining an initial cover based on the observations, performing one or more modifications to the initial cover to generate a final cover, and using the final cover to track multiple targets in the one or more digital video feeds. Performing one or more modifications to generate a final cover can include selecting one or more adjustments from a group that includes temporal cover adjustments and spatial cover adjustments, and can include using likelihood information indicative of similarities in motion and appearance to distinguish different targets in the frames.

    摘要翻译： 跟踪多个目标可以包括基于一个或多个数字视频馈送的多个不同帧来进行不同的观察，基于观察确定初始覆盖，对初始覆盖执行一个或多个修改以产生最终覆盖，并且使用最终覆盖 以跟踪一个或多个数字视频馈送中的多个目标。 执行一个或多个修改以生成最终封面可以包括从包括时间覆盖调整和空间覆盖调整的组中选择一个或多个调整，并且可以包括使用表示运动和外观的相似性的似然信息来区分帧中的不同目标 。

    Method and system for communication channel optimization in a multiple-input multiple-output (MIMO) communication system
    9.
    发明授权
    Method and system for communication channel optimization in a multiple-input multiple-output (MIMO) communication system 有权
    多输入多输出（MIMO）通信系统中通信信道优化的方法和系统

    公开(公告)号：US08374275B2

    公开(公告)日：2013-02-12

    申请号：US12514515

    申请日：2007-06-23

    申请人： Qian Yu ,  Ping Luo ,  Masayuki Hoshino

    发明人： Qian Yu ,  Ping Luo ,  Masayuki Hoshino

    IPC分类号： H04B7/02 ,  H04B7/06 ,  H04L27/00

    CPC分类号： H04B7/0417 ,  H04B7/0452 ,  H04B7/0634 ,  H04B7/0639

    摘要： A transmission method in a multiple-input multiple-output (MIMO) communication system, a transmitter in a MIMO communication system and a MIMO communication system are provided. The method comprises the steps of: receiving feedback data representing channel state information from respective receivers of the MIMO communication system; grouping the receivers into one or more groups based on the received feedback data; obtaining a precoding matrix for each group of receivers based on the received feedback data such that precoding vectors or sub-matrices in the precoding matrix associated with respective receivers of said each group of receivers are orthogonal to each other; and applying the precoding matrix to input signals for transmission to said each group of receivers.

    摘要翻译： 提供了多输入多输出（MIMO）通信系统中的传输方法，MIMO通信系统中的发射机和MIMO通信系统。 该方法包括以下步骤：从MIMO通信系统的各个接收机接收表示信道状态信息的反馈数据; 基于接收到的反馈数据将接收机分组成一个或多个组; 基于所接收的反馈数据获得每组接收机的预编码矩阵，使得与所述每组接收机的各接收机相关联的预编码矩阵中的预编码向量或子矩阵彼此正交; 以及将预编码矩阵应用于输入信号以传输到所述每组接收机。

    Video feed target tracking
    10.
    发明授权
    Video feed target tracking 有权
    视频Feed目标跟踪

    公开(公告)号：US08351649B1

    公开(公告)日：2013-01-08

    申请号：US12416913

    申请日：2009-04-01

    申请人： Gerard Medioni ,  Qian Yu ,  Thang Ba Dinh

    发明人： Gerard Medioni ,  Qian Yu ,  Thang Ba Dinh

    IPC分类号： G06K9/00

    CPC分类号： G06K9/6282 ,  G06K9/00771 ,  G06T7/251 ,  G06T2207/10016 ,  G06T2207/30201

    摘要： Technologies for object tracking can include accessing a video feed that captures an object in at least a portion of the video feed; operating a generative tracker to capture appearance variations of the object operating a discriminative tracker to discriminate the object from the object's background, where operating the discriminative tracker can include using a sliding window to process data from the video feed, and advancing the sliding window to focus the discriminative tracker on recent appearance variations of the object; training the generative tracker and the discriminative tracker based on the video feed, where the training can include updating the generative tracker based on an output of the discriminative tracker, and updating the discriminative tracker based on an output of the generative tracker; and tracking the object with information based on an output from the generative tracker and an output from the discriminative tracker.

    摘要翻译： 用于对象跟踪的技术可以包括访问在视频馈送的至少一部分中捕获对象的视频馈送; 操作生成跟踪器以捕获操作鉴别跟踪器的对象的外观变化，以区分对象与对象的背景，其中操作鉴别性跟踪器可以包括使用滑动窗口来处理来自视频馈送的数据，以及将滑动窗口推进到焦点 最近出现的对象变化的歧视性追踪器; 基于所述视频馈送来训练所述生成跟踪器和所述歧视性跟踪器，其中所述训练可以包括基于所述识别跟踪器的输出来更新所述生成跟踪器，以及基于所述生成跟踪器的输出来更新所述识别跟踪器; 以及基于来自生成跟踪器的输出和来自辨别性跟踪器的输出的信息来跟踪对象。