LOW-COST, HIGH FIDELITY ULTRASOUND SYSTEM
    1.
    发明申请
    LOW-COST, HIGH FIDELITY ULTRASOUND SYSTEM 审中-公开
    低成本,高密度超声波系统

    公开(公告)号:US20130023767A1

    公开(公告)日:2013-01-24

    申请号:US13471448

    申请日:2012-05-14

    IPC分类号: A61B8/08 A61B8/14

    摘要: A system and method for performing an ultrasound may include generating a set of continuous tone signals for injection into an object. A corresponding set of reflected tone signals in the frequency domain may be received The set of reflected tone signals may be converted from the frequency domain to the time domain to create a set of time domain signals. At least one region of interest may be identified from the set of time domain signals. A window may be defined around the identified region of interest in the set of time domain signals. The windowed time domain signals may be converted from the time domain to the frequency domain to create a set of windowed frequency domain signals. At least one characteristic parameter may be calculated from the set of windowed frequency domain signals. Information may be output based on the calculate at least one characteristic parameter.

    摘要翻译: 用于执行超声的系统和方法可以包括产生用于注射到对象中的一组连续音调信号。 可以接收频域中相应的一组反射音信号。反射音信号的集合可以从频域转换到时域以创建一组时域信号。 可以从该组时域信号中识别出至少一个感兴趣的区域。 可以在所述一组时域信号中围绕识别的感兴趣区域定义窗口。 窗口化的时域信号可以从时域转换到频域以创建一组加窗频域信号。 可以从该组窗口化频域信号计算至少一个特性参数。 可以基于计算至少一个特征参数来输出信息。

    System for topographical modeling of anatomical surfaces
    2.
    发明授权
    System for topographical modeling of anatomical surfaces 失效
    解剖表面造型建模系统

    公开(公告)号:US4863260A

    公开(公告)日:1989-09-05

    申请号:US289515

    申请日:1988-12-27

    IPC分类号: A61B3/107

    CPC分类号: A61B3/107

    摘要: Apparatus and method for accurately quantifying the instantaneous radius curvature of a large plurality of points on the corneal surface is disclosed. A video image of the corneal surface accurately positioned at a predetermined point on the optic axis of measurement is obtained. The predetermined point is defined by intersecting low power laser beams. The video image is radially scanned from an original position at point defined by the intersection of the visual axis with corneal surface. Accurate measurements of the two-dimensional image radii of a plurality of illuminated mires reflective upon the corneal surface are made and corrected for camera distortions, quantization error and the different magnification occurring for different size corneas. The instrumentation is calibrated by using a plurality of mirror-like spheres of precisely known spherical radii.

    摘要翻译: 公开了用于精确量化角膜表面上的大量多个点的瞬时半径曲率的装置和方法。 获得精确定位在测量光轴上的预定点处的角膜表面的视频图像。 预定点由相交的低功率激光束定义。 从视轴与角膜表面的交点定义的点处,从原始位置径向扫描视频图像。 针对角膜表面反射的多个照明烟囱的二维图像半径的精确测量被制作和校正,用于相机失真,量化误差和针对不同尺寸角膜的不同放大率。 仪器通过使用具有精确已知球面半径的多个镜状球进行校准。

    Subword-based speaker verification with multiple-classifier score fusion weight and threshold adaptation
    3.
    发明授权
    Subword-based speaker verification with multiple-classifier score fusion weight and threshold adaptation 失效
    基于子词的说话人验证与多分类器得分融合权重和阈值适应

    公开(公告)号:US06539352B1

    公开(公告)日:2003-03-25

    申请号:US08976280

    申请日:1997-11-21

    IPC分类号: G10L1700

    摘要: The voice print system of the present invention is a subword-based, text-dependent automatic speaker verification system that embodies the capability of user-selectable passwords with no constraints on the choice of vocabulary words or the language. Automatic blind speech segmentation allows speech to be segmented into subword units without any linguistic knowledge of the password. Subword modeling is performed using a multiple classifiers. The system also takes advantage of such concepts as multiple classifier fusion and data resampling to successfully boost the performance. Key word/key phrase spotting is used to optimally locate the password phrase. Numerous adaptation techniques increase the flexibility of the base system, and include: channel adaptation, fusion adaptation, model adaptation and threshold adaptation.

    摘要翻译: 本发明的语音打印系统是一种基于词语的文本相关的自动说话人验证系统,其体现了用户可选择密码的能力,对词汇词或语言的选择没有限制。 自动盲语分割允许语音被分割成子词单元,而没有密码的任何语言知识。 使用多个分类器执行子字建模。 该系统还利用了诸如多分类器融合和数据重采样这样的概念来成功提高性能。 关键词/关键短语发现用于最佳地定位密码短语。 许多适应技术增加了基本系统的灵活性,包括:信道适应,融合适应,模型适应和阈值适配。

    Fixed reference shift keying modulation for mobile radio
telecommunications
    4.
    发明授权
    Fixed reference shift keying modulation for mobile radio telecommunications 失效
    移动无线电通信固定参考移位键控调制

    公开(公告)号:US5703908A

    公开(公告)日:1997-12-30

    申请号:US356019

    申请日:1994-12-14

    IPC分类号: H04L27/152 H04L27/10

    CPC分类号: H04L27/1525

    摘要: A method and apparatus for improved mobile radio telecommunications employs the transmission of a pilot reference signal within the coherence band of the modulated carrier wave. The receiver in this system uses instantaneous phase estimation techniques of the pilot and carrier received waveforms to provide immunity from phase distortion introduced by the channel.

    摘要翻译: 用于改进的移动无线电信号的方法和装置采用调制载波的相干带内的导频参考信号的传输。 该系统中的接收机使用导频和载波接收波形的瞬时相位估计技术来提供由信道引入的相位失真的抗扰度。

    Illuminated ring keratometer device
    5.
    发明授权
    Illuminated ring keratometer device 失效
    照明环形角膜测量仪

    公开(公告)号:US4772115A

    公开(公告)日:1988-09-20

    申请号:US902610

    申请日:1986-09-02

    CPC分类号: A61B3/107

    摘要: A device for causing concentric circles of illuminated light to be reflected from the human cornea. The device includes a cylindrical surface which is open at both ends. At one end the eye looks into the cylinder of the device and at the other end a camera or observer can view the illuminated rings on the cornea. The cylinder is advantageously made of transparent plastic or glass having an opaque coating. A lamp box is affixed to an uncoated portion of the device. The coating of the cylindrical surface through is interrupted to define clear rings on the cylindrical surface which light from the lamp box is conducted to be reflected from the cornea.

    摘要翻译: 用于使照明光的同心圆从人角膜反射的装置。 该装置包括在两端敞开的圆柱形表面。 在一端,眼睛看着装置的圆柱体,另一端,相机或观察者可以观察角膜上的照明环。 圆筒有利地由具有不透明涂层的透明塑料或玻璃制成。 灯箱固定在设备的未涂覆部分上。 圆柱形表面通过的涂层被中断以在圆柱形表面上限定透明环,来自灯箱的光被传导以从角膜反射。

    Blind clustering of data with application to speech processing systems
    7.
    发明授权
    Blind clustering of data with application to speech processing systems 失效
    数据的盲目聚类与应用于语音处理系统

    公开(公告)号:US5862519A

    公开(公告)日:1999-01-19

    申请号:US827562

    申请日:1997-04-01

    CPC分类号: G10L25/48 G10L15/04

    摘要: The present invention relates to a method for segmenting speech into subword speech segments. Optimal boundary locations for each estimate of a number of segments are determined within an estimated range of the number of segments. In addition, an optimality criteria is found for each estimate of the number of segments within the range. Using the optimality criteria, the optimal number of subwords are determined. From the location of the boundaries and the optimal number of segments, data can be clustered or speech can be segmented. The method can be used in data processing systems, speaker verification, medium size vocabulary speech recognition systems, language identification systems and coarse subword level speech segmentation processes.

    摘要翻译: 本发明涉及一种将语音分割为子词语音片段的方法。 在段的数量的估计范围内确定多个段的每个估计的最优边界位置。 此外,针对范围内的段数的每个估计找到最优性标准。 使用最优性标准,确定最佳子词数。 从边界的位置和段的最佳数量,可以对数据进行聚类或分割语音。 该方法可用于数据处理系统,扬声器验证,中等大小词汇语音识别系统,语言识别系统和粗略词级语音分割过程。

    Large numerical aperture imaging device
    9.
    发明授权
    Large numerical aperture imaging device 失效
    大数值孔径成像装置

    公开(公告)号:US5835265A

    公开(公告)日:1998-11-10

    申请号:US683717

    申请日:1996-07-18

    摘要: A microscope having a high effective numerical aperture (NA) is achieved in an apparatus in which a real, three-dimensional image is formed of an object placed in an aperture at the apex of one of two facing, axially-aligned concave mirrors. The three-dimensional image is acquired by a video camera positioned in a counterpart aperture at the apex of the other mirror and the acquired image is processed by computer. The processing corrects the acquired image using the point spread function of the mirror system which was previously obtained by positioning a point source of light throughout the object space and measuring the pixel values recorded by the camera's array of sensing element while the camera was positioned at different axial distances in the image space. When the diameter of the mirrors is large compared to the specimen object, substantially all of the light leaving the specimen is captured by the mirrors and focused upon the camera, thereby achieving a high effective numerical aperture for the system which affords excellent resolution, especially when examining transparent specimens.

    摘要翻译: 具有高有效数值孔径(NA)的显微镜在其中实际的三维图像由放置在两个面向的轴向对准的凹面镜之一的顶点的孔中的物体形成的装置中实现。 三维图像由位于另一镜的顶点处的对应孔中的摄像机获取,并且所获取的图像由计算机处理。 该处理使用以前通过将点光源定位在整个对象空间中而获得的镜像系统的点扩散函数来校正所获取的图像,并且在相机位于不同的位置时测量由相机的感测元件阵列记录的像素值 图像空间中的轴向距离。 当反射镜的直径与样本物体相比较大时,基本上所有离开样品的光被镜子捕获并聚焦在照相机上,从而实现了提供优异分辨率的系统的高有效数值孔径,特别是当 检查透明标本。

    Processing of keratoscopic images
    10.
    发明授权
    Processing of keratoscopic images 失效
    角膜摄影图像的处理

    公开(公告)号:US5818957A

    公开(公告)日:1998-10-06

    申请号:US044104

    申请日:1993-04-08

    IPC分类号: A61B3/107 G06K9/00

    CPC分类号: A61B3/107

    摘要: Processing of the two-dimensional image of a three-dimensional object, such as the human cornea, that has been illuminated with a structured light pattern. A specially filtered Fourier transform and inverse transform are processed to yield the instantaneous spatial frequencies of the illuminated pattern. The instantaneous spatial frequencies are mapped to the instantaneous dioptric powers or depth coordinates of the object's surface.

    摘要翻译: 用结构化的光图案照亮的三维物体(例如人角膜)的二维图像的处理。 处理特殊滤波的傅立叶变换和逆变换以产生照明图案的瞬时空间频率。 瞬时空间频率映射到物体表面的瞬时屈光度或深度坐标。