SNR-based blanking scheme for impulsive noise mitigation in wireless networks
    1.
    发明授权
    SNR-based blanking scheme for impulsive noise mitigation in wireless networks 失效
    用于无线网络中脉冲噪声抑制的基于SNR的消隐方案

    公开(公告)号:US08451956B2

    公开(公告)日:2013-05-28

    申请号:US12650410

    申请日:2009-12-30

    IPC分类号: H04B1/10

    摘要: A blanking scheme for mitigating impulsive noise in wireless networks is based on the signal-to-noise ratio (SNR) of symbols. To fully gain the benefits of the SNR-based blanking scheme, two methods are developed, namely a multi-level thresholding scheme in the time-, spatial- and frequency-domains, and a weighted-input error-correction decoding. The symbols are conditioned as a function of the estimated SNR in time-, frequency-, or spatial-domains or combinations therefore, and the conditioning is applied to an amplitude, phase, or energy level, or combinations thereof.

    摘要翻译: 用于减轻无线网络中的脉冲噪声的消隐方案是基于符号的信噪比(SNR)。 为了充分获得基于SNR的消隐方案的优点,开发了两种方法,即时域,空间和频域中的多级阈值方案和加权输入纠错解码。 符号在时间,频率或空间域或组合中作为估计的SNR的函数进行调节,并且将调节应用于幅度,相位或能级或其组合。

    SNR-Based Blanking Scheme for Impulsive Noise Mitigation in Wireless Networks
    2.
    发明申请
    SNR-Based Blanking Scheme for Impulsive Noise Mitigation in Wireless Networks 失效
    基于SNR的无线网络脉冲噪声消除消隐方案

    公开(公告)号:US20110158360A1

    公开(公告)日:2011-06-30

    申请号:US12650410

    申请日:2009-12-30

    IPC分类号: H04B1/10

    摘要: A blanking scheme for mitigating impulsive noise in wireless networks is based on the signal-to-noise ratio (SNR) of symbols. To fully gain the benefits of the SNR-based blanking scheme, two methods are developed, namely a multi-level thresholding scheme in the time-, spatial- and frequency-domains, and a weighted-input error-correction decoding. The symbols are conditioned as a function of the estimated SNR in time-, frequency-, or spatial-domains or combinations therefore, and the conditioning is applied to an amplitude, phase, or energy level, or combinations thereof.

    摘要翻译: 用于减轻无线网络中的脉冲噪声的消隐方案是基于符号的信噪比(SNR)。 为了充分获得基于SNR的消隐方案的优点,开发了两种方法,即时域,空间和频域中的多级阈值方案和加权输入纠错解码。 符号在时间,频率或空间域或组合中作为估计的SNR的函数进行调节,并且将调节应用于幅度,相位或能级或其组合。

    Method for Physically Making Objects Continuous Functions
    3.
    发明申请
    Method for Physically Making Objects Continuous Functions 有权
    物理连续功能物理方法

    公开(公告)号:US20120168523A1

    公开(公告)日:2012-07-05

    申请号:US12982522

    申请日:2010-12-30

    IPC分类号: G06K19/06 B41L19/00 B41F33/00

    CPC分类号: G06K19/06018

    摘要: A set of symbols is encoded using a continuous mapping function to produce corresponding encoded functions, wherein the mapping function is continuous and values of the encoded functions are real and vary continuously. The encoded functions are summed in a spatial domain to generate a summed function, which is biased so that values of a biased function are all positive and real. Then, a physical property of the object is altered according the biased function to arrange a mark on the object.

    摘要翻译: 使用连续映射函数对一组符号进行编码以产生相应的编码函数,其中映射函数是连续的,并且编码函数的值是实际的并且连续地变化。 将编码的函数在空间域中相加以产生相加的函数,该函数被偏置,使得偏置函数的值都是正的和实数的。 然后,根据偏置的功能改变对象的物理属性以在对象上布置标记。

    Method for physically marking objects using continuous functions
    4.
    发明授权
    Method for physically marking objects using continuous functions 有权
    使用连续功能物理标记物体的方法

    公开(公告)号:US08262001B2

    公开(公告)日:2012-09-11

    申请号:US12982522

    申请日:2010-12-30

    IPC分类号: G06K19/05

    CPC分类号: G06K19/06018

    摘要: A set of symbols is encoded using a continuous mapping function to produce corresponding encoded functions, wherein the mapping function is continuous and values of the encoded functions are real and vary continuously. The encoded functions are summed in a spatial domain to generate a summed function, which is biased so that values of a biased function are all positive and real. Then, a physical property of the object is altered according the biased function to arrange a mark on the object.

    摘要翻译: 使用连续映射函数对一组符号进行编码以产生相应的编码函数,其中映射函数是连续的,并且编码函数的值是实际的并且连续地变化。 将编码的函数在空间域中相加以产生相加的函数,该函数被偏置,使得偏置函数的值都是正的和实数的。 然后,根据偏置的功能改变对象的物理属性以在对象上布置标记。

    Method for tracking objects in videos using forward and backward tracking
    5.
    发明申请
    Method for tracking objects in videos using forward and backward tracking 有权
    使用向前和向后跟踪跟踪视频中的对象的方法

    公开(公告)号:US20080240497A1

    公开(公告)日:2008-10-02

    申请号:US11691886

    申请日:2007-03-27

    IPC分类号: G06T7/20

    CPC分类号: G06T7/20 G06T2207/10016

    摘要: A method tracks an object in a sequence of frames of a video. The method is provided with a set of tracking modules. Frames of a video are buffered in a memory buffer. First, an object is tracked in the buffered frames forward in time using a selected one of the plurality of tracking module. Second, the object is tracked in the buffered frames backward in time using the selected tracking module. Then, a tracking error is determined from the first tracking and the second tracking. If the tracking error is less than a predetermined threshold, then additional frames are buffered in the memory buffer and the first tracking, the second tracking and the determining steps are repeated. Otherwise, if the error is greater than the predetermined threshold, then a different tracking module is selected and the first tracking, the second tracking and the determining steps are repeated.

    摘要翻译: 一种方法跟踪视频帧的序列中的对象。 该方法具有一组跟踪模块。 视频的帧被缓存在存储器缓冲器中。 首先,使用所述多个跟踪模块中的所选择的一个,在缓冲帧中跟踪对象的时间。 第二,使用所选择的跟踪模块,在缓冲的帧中以时间向后跟踪对象。 然后,从第一跟踪和第二跟踪确定跟踪误差。 如果跟踪误差小于预定阈值,则将附加帧缓冲在存储器缓冲器中,并且重复第一跟踪,第二跟踪和确定步骤。 否则,如果误差大于预定阈值,则选择不同的跟踪模块,并重复第一跟踪,第二跟踪和确定步骤。

    Adaptive background image updating
    6.
    发明授权
    Adaptive background image updating 有权
    自适应背景图像更新

    公开(公告)号:US07224735B2

    公开(公告)日:2007-05-29

    申请号:US10442752

    申请日:2003-05-21

    IPC分类号: H04N7/18

    摘要: A method compares a background image to input images to determine a similarity scores λ for each input image. Then, the background image is updated only if the similarity score for a particular image is less than a predetermined threshold. Presumably, any pixel whose color does not change is part of a static background, and any pixel that does change is part of a moving object. The similarity score controls when input images are scored and the manner the background image is updated.

    摘要翻译: 一种方法将背景图像与输入图像进行比较,以确定每个输入图像的相似度得分λ。 然后,仅当特定图像的相似度得分小于预定阈值时才更新背景图像。 可能的是,其颜色不改变的任何像素是静态背景的一部分,并且任何改变的像素是移动对象的一部分。 相似度得分控制输入图像的分数和背景图像的更新方式。

    Memory-based high-speed interferometer
    7.
    发明授权
    Memory-based high-speed interferometer 有权
    基于记忆的高速干涉仪

    公开(公告)号:US07990542B2

    公开(公告)日:2011-08-02

    申请号:US11923786

    申请日:2007-10-25

    IPC分类号: G01B9/02

    CPC分类号: G01B9/02088 G01B9/02081

    摘要: An interferometer produces a first optical signal and a second optical signal interfering with each other. The optical signals are converted digital signals form addresses. A memory stores data values corresponding to the first and second optical signals, and in which the addresses are used to directly read the data values stored at the addresses. The data values stored in the memory can be dynamically adapting while converting the first and second optical signals and reading the data values.

    摘要翻译: 干涉仪产生彼此干扰的第一光信号和第二光信号。 光信号是转换成地址的数字信号。 存储器存储对应于第一和第二光信号的数据值,并且其中地址用于直接读取存储在地址处的数据值。 存储在存储器中的数据值可以在转换第一和第二光学信号并读取数据值的同时动态地适应。

    Optical fluid level encoder
    8.
    发明申请
    Optical fluid level encoder 失效
    光学液位编码器

    公开(公告)号:US20080023659A1

    公开(公告)日:2008-01-31

    申请号:US11493197

    申请日:2006-07-26

    IPC分类号: G01N21/85

    CPC分类号: G01F23/2927

    摘要: An apparatus measures a fluid level in a container. A light source emits a light beam. A light sensor can sense the light beam. An optical conduit is arranged in a container for holding fluid. The optical conduit is arranged between the light source and the light sensor along a path of the light beam, such that at least one part of the light beam passes through the optical conduit, and at least an other part of the light beam passes through the fluid when the container holds the fluid. The sensor senses the light beam when a level of the fluid coincides with the one part of the light beam passing through the optical conduit, and the sensor does not sense the light beam when the level of the fluid coincides with the other part of the light beam passing through the fluid due to internal reflection at the fluid level.

    摘要翻译: 装置测量容器中的液面。 光源发射光束。 光传感器可以感测光束。 光导管布置在用于保持流体的容器中。 光导管沿着光束的路径布置在光源和光传感器之间,使得光束的至少一部分通过光导管,并且光束的至少另一部分通过 当容器保持流体时流体。 当流体的水平与通过光导管的光束的一部分重合时,传感器感测光束,并且当流体的水平与光的另一部分重合时,传感器不感测光束 由于流体水平处的内部反射,光束通过流体。

    Projector as an input and output device
    9.
    发明授权
    Projector as an input and output device 失效
    投影机作为输入和输出设备

    公开(公告)号:US06764185B1

    公开(公告)日:2004-07-20

    申请号:US10636356

    申请日:2003-08-07

    IPC分类号: G03B2100

    CPC分类号: G03B21/00

    摘要: An interactive display system includes a sensor for sensing a relationship between a mobile coordinate frame fixed to a moving projector, and a stable coordinate frame fixed to a stationary display surface in the real world. An output image to be projected on the display surface is partitioned into a black image portion having a fixed relationship to the mobile coordinate frame, a stable image portion within the block image portion having a fixed relationship to the stable coordinate frame, and a mobile image portion within the stable image portion having a fixed relationship to the mobile coordinate frame. The mobile portion can be used as a pointer within the stable portion in a mouse-cursor like manner.

    摘要翻译: 交互式显示系统包括用于感测固定到移动投影仪的移动坐标系与固定在现实世界中的固定显示表面的稳定坐标系之间的关系的传感器。 要投影在显示表面上的输出图像被分割成与移动坐标系具有固定关系的黑色图像部分,在与稳定坐标系具有固定关系的块图像部分内的稳定图像部分和移动图像 稳定图像部分内的部分与移动坐标系具有固定的关系。 移动部分可以以类似于鼠标光标的方式用作稳定部分内的指针。

    Method for tracking objects in videos using forward and backward tracking
    10.
    发明授权
    Method for tracking objects in videos using forward and backward tracking 有权
    使用向前和向后跟踪跟踪视频中的对象的方法

    公开(公告)号:US07756296B2

    公开(公告)日:2010-07-13

    申请号:US11691886

    申请日:2007-03-27

    IPC分类号: G06K9/00 H04N13/00

    CPC分类号: G06T7/20 G06T2207/10016

    摘要: A method tracks an object in a sequence of frames of a video. The method is provided with a set of tracking modules. Frames of a video are buffered in a memory buffer. First, an object is tracked in the buffered frames forward in time using a selected one of the plurality of tracking module. Second, the object is tracked in the buffered frames backward in time using the selected tracking module. Then, a tracking error is determined from the first tracking and the second tracking. If the tracking error is less than a predetermined threshold, then additional frames are buffered in the memory buffer and the first tracking, the second tracking and the determining steps are repeated. Otherwise, if the error is greater than the predetermined threshold, then a different tracking module is selected and the first tracking, the second tracking and the determining steps are repeated.

    摘要翻译: 一种方法跟踪视频帧的序列中的对象。 该方法具有一组跟踪模块。 视频的帧被缓存在存储器缓冲器中。 首先,使用所述多个跟踪模块中的所选择的一个,在缓冲帧中跟踪对象的时间。 第二,使用所选择的跟踪模块,在缓冲的帧中以时间向后跟踪对象。 然后,从第一跟踪和第二跟踪确定跟踪误差。 如果跟踪误差小于预定阈值,则将附加帧缓冲在存储器缓冲器中,并且重复第一跟踪,第二跟踪和确定步骤。 否则,如果误差大于预定阈值,则选择不同的跟踪模块,并重复第一跟踪,第二跟踪和确定步骤。