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    Ultrasound imaging system
    43.
    发明授权
    Ultrasound imaging system 有权

    公开(公告)号：US06638226B2

    公开(公告)日：2003-10-28

    申请号：US09966810

    申请日：2001-09-28

    申请人： Xingbai He ,  Peter P. Chang ,  Eric R. Kischell ,  Alice M. Chiang

    发明人： Xingbai He ,  Peter P. Chang ,  Eric R. Kischell ,  Alice M. Chiang

    IPC分类号： A61B800

    CPC分类号： A61B8/4427 ,  A61B8/065 ,  A61B8/463 ,  A61B8/486 ,  A61B8/488 ,  A61B8/5223 ,  A61B8/54 ,  A61B8/56 ,  G01S7/003 ,  G01S7/52044 ,  G01S7/52063 ,  G01S7/52071 ,  G01S7/5208 ,  G01S7/52082 ,  G01S7/52084 ,  G01S15/584 ,  G01S15/8979 ,  G01S15/8981

    摘要： The present invention is directed to an ultrasound imaging system and method for Doppler processing of data. The ultrasonic imaging system efficiently addresses the data computational and processing needs of Doppler processing. Software executable sequences in accordance with a preferred embodiment of the present invention determines the phase shift and the auto-correlation phase of filtered image data. In a preferred embodiment, the system of ultrasonic imaging also includes a sequence of instructions for Doppler processing that provides the functions for demodulation, Gauss Match filtering, auto-correlation calculation, phase shift calculation, frame averaging, and scan conversion implemented with Single Instruction Multiple Data (SIMD) or Multiple Instruction Multiple Data (MIMD) instructions. In a preferred embodiment, the ultrasound imaging system of the present invention includes a processing module; and memory operable coupled to the processing module, wherein the memory stores operational instructions that cause the processing module to map serial data to vector representation, calculate an auto-correlation function of the data, calculate a phase shift of the auto-correlation function to generate a monotonic function covering all values of the phase shift corresponding to a range of Doppler velocities and display the resultant images, for example, as color images.

    Charge domain bit-serial multiplying digital-analog converter
    44.
    发明授权
    Charge domain bit-serial multiplying digital-analog converter 失效
    电荷域位串行倍增数字模拟转换器

    公开(公告)号：US5555200A

    公开(公告)日：1996-09-10

    申请号：US457827

    申请日：1995-06-01

    申请人： Alice M. Chiang

    发明人： Alice M. Chiang

    IPC分类号： H03H21/00 ,  G06J1/00

    CPC分类号： H03H21/0012

    摘要： A single chip adaptive filtering system including an FIR filter and circuitry for calculating updated weighting coefficients for use in associated multiplying digital-to-analog converters. The adaptive FIR filter performs the convolution of a delayed and sampled input sequence to produce a filter output. Thereafter, an error term is determined by calculating the difference between the filter output and a reference signal which corresponds to a predetermined anticipated output of the filter. The error term is then applied to a least mean square (LMS) estimation algorithm for computing updated weighting coefficients to be used by the adaptive FIR filter.

    摘要翻译： 包括FIR滤波器和用于计算用于相关联的乘法数模转换器的更新加权系数的电路的单芯片自适应滤波系统。 自适应FIR滤波器执行延迟和采样输入序列的卷积以产生滤波器输出。 此后，通过计算滤波器输出与对应于滤波器的预定预期输出的参考信号之间的差来确定误差项。 然后将误差项应用于用于计算要由自适应FIR滤波器使用的更新的加权系数的最小均方（LMS）估计算法。

    Ultrasound imaging system
    47.
    发明授权
    Ultrasound imaging system 有权
    超声成像系统

    公开(公告)号：US07223242B2

    公开(公告)日：2007-05-29

    申请号：US10259251

    申请日：2002-09-27

    申请人： Xingbai He ,  Peter P. Chang ,  Eric R. Kischell ,  Alice M. Chiang

    发明人： Xingbai He ,  Peter P. Chang ,  Eric R. Kischell ,  Alice M. Chiang

    IPC分类号： A61B8/06

    CPC分类号： A61B8/4427 ,  A61B8/065 ,  A61B8/463 ,  A61B8/486 ,  A61B8/488 ,  A61B8/5223 ,  A61B8/54 ,  A61B8/56 ,  G01S7/003 ,  G01S7/52044 ,  G01S7/52063 ,  G01S7/52071 ,  G01S7/5208 ,  G01S7/52082 ,  G01S7/52084 ,  G01S15/584 ,  G01S15/8979 ,  G01S15/8981

    摘要： The present invention is directed to an ultrasound imaging system and method for Doppler processing of data. The ultrasonic imaging system efficiently addresses the data computational and processing needs of Doppler processing. Software executable sequences in accordance with a preferred embodiment of the present invention determines the phase shift and the auto-correlation phase of filtered image data. In a preferred embodiment, the system of ultrasonic imaging also includes a sequence of instructions for Doppler processing that provides the functions for demodulation, Gauss Match filtering, auto-correlation calculation, phase shift calculation, frame averaging, and scan conversion implemented with Single Instruction Multiple Data (SIMD) or Multiple Instruction Multiple Data (MIMD) instructions.In a preferred embodiment, the ultrasound imaging system of the present invention includes a processing module; and memory operable coupled to the processing module, wherein the memory stores operational instructions that cause the processing module to map serial data to vector representation, calculate an auto-correlation function of the data, calculate a phase shift of the auto-correlation function to generate a monotonic function covering all values of the phase shift corresponding to a range of Doppler velocities and display the resultant images, for example, as color images.

    摘要翻译： 本发明涉及用于数据的多普勒处理的超声成像系统和方法。 超声成像系统有效地解决了多普勒处理的数据计算和处理需求。 根据本发明的优选实施例的软件可执行序列确定滤波图像数据的相移和自相关相位。 在优选实施例中，超声成像系统还包括用于多普勒处理的指令序列，其提供用于解调，高斯匹配滤波，自相关计算，相移计算，帧平均和使用单指令多重实现的扫描转换的功能 数据（SIMD）或多指令多数据（MIMD）指令。 在优选实施例中，本发明的超声成像系统包括处理模块; 以及可操作地耦合到所述处理模块的存储器，其中所述存储器存储使所述处理模块将串行数据映射到向量表示的操作指令，计算所述数据的自相关函数，计算所述自相关函数的相移以产生 一个单调函数，覆盖与多普勒速度范围相对应的所有相移值，并显示所得到的图像，例如作为彩色图像。

    Integrated beam forming and focusing processing circuit for use in an ultrasound imaging system
    49.
    发明授权
    Integrated beam forming and focusing processing circuit for use in an ultrasound imaging system 失效
    用于超声成像系统的集成波束形成和聚焦处理电路

    公开(公告)号：US5763785A

    公开(公告)日：1998-06-09

    申请号：US496915

    申请日：1995-06-29

    申请人： Alice M. Chiang

    发明人： Alice M. Chiang

    IPC分类号： G01S7/52 ,  G10K11/34 ,  G01N29/06

    CPC分类号： G01S7/52046 ,  G10K11/346

    摘要： A beam forming and focusing processing circuit for use in an ultrasound imaging system. The system incorporates a plurality of the processing circuits which differentially delay imaging signals in order to generate an output in which the imaging signals from each circuit implement the desired differential delay. Each of the processing circuits include a first delay line having a plurality of delay units operable for receiving the imaging signals and converting same into sampled data. A selection control circuit is operable for reading the sampled data from a selected first delay unit of the first delay line so as to correspond to a selected first time delay to accommodate fine delay resolution of the imaging signals. A second delay line having a plurality of delay units is operable for sensing the sampled data from the selected first delay unit. The control circuit is further operable for reading the sampled data from a selected second delay unit of said second delay line so as to correspond to a selected second delay time to accommodate coarse delay resolution of the imaging signals. The processing circuits are preferably integrated onto a single microchip.

    摘要翻译： 一种用于超声成像系统中的波束形成和聚焦处理电路。 该系统包括多个处理电路，其差分地延迟成像信号，以便产生其中来自每个电路的成像信号实现期望的差分延迟的输出。 每个处理电路包括具有多个延迟单元的第一延迟线，其可操作用于接收成像信号并将其转换为采样数据。 选择控制电路可操作用于从所选择的第一延迟线的第一延迟单元读取采样数据，以对应于所选择的第一时间延迟以适应成像信号的精细延迟分辨率。 具有多个延迟单元的第二延迟线可用于感测来自所选择的第一延迟单元的采样数据。 控制电路还可操作用于从所述第二延迟线的所选择的第二延迟单元读取采样数据，以对应于所选择的第二延迟时间以适应成像信号的粗延迟分辨率。 处理电路优选地集成到单个微芯片上。

    GaP Directed field UV photodiode
    50.
    发明授权
    GaP Directed field UV photodiode 失效
    GaP定向场UV光电二极管

    公开(公告)号：US4128843A

    公开(公告)日：1978-12-05

    申请号：US842443

    申请日：1977-10-14

    申请人： Alice M. Chiang

    发明人： Alice M. Chiang

    IPC分类号： H01L29/36 ,  H01L31/103 ,  H01L27/14 ,  H01L29/90

    CPC分类号： H01L31/1035 ,  H01L29/36

    摘要： A GaP photodiode having a shallow PN junction and an internal directed surface electric field exhibits high quantum efficiency in detecting ultraviolet wavelengths.

    摘要翻译： 具有浅PN结和内部定向表面电场的GaP光电二极管在检测紫外线波长方面表现出高量子效率。