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    • 7. 发明授权
    • Method and apparatus for ultrasound diagnosis that reduces interference and restores missed signals
    • 用于超声诊断的方法和装置,其减少干扰并恢复遗漏信号
    • US09354301B2
    • 2016-05-31
    • US13493464
    • 2012-06-11
    • Hwan ShimYoung-Tae Kim
    • Hwan ShimYoung-Tae Kim
    • A61B8/00G01S7/52G01S15/89
    • G01S7/52077G01S7/52023G01S7/52026G01S15/8979
    • A method and apparatus for ultrasound diagnosis that reduces interference and restores missed signals, is provided. The method of ultrasound diagnosis includes operations of receiving a Doppler signal having at least one gap; respectively obtaining model parameter sets of first and second Doppler signals by using Doppler signal periods before and after a start of the at least one gap; synthesizing first and second Doppler information by respectively using the model parameter sets of the first and second Doppler signals; and generating Doppler information for the at least one gap by cross-fading the synthesized first and second Doppler information. The apparatus includes a transformer for transforming received I and Q signals into stereo audio signals using a Hilbert transform; and a source separator which removes interference from the stereo audio signals by performing source separation on the stereo audio signals.
    • 提供了一种减少干扰并恢复丢失信号的超声诊断方法和装置。 超声诊断方法包括接收具有至少一个间隙的多普勒信号的操作; 分别通过在所述至少一个间隙开始之前和之后的多普勒信号周期获得第一和第二多普勒信号的模型参数集合; 通过分别使用第一和第二多普勒信号的模型参数集合合成第一和第二多普勒信息; 以及通过使合成的第一和第二多普勒信息交叉衰落来产生用于所述至少一个间隙的多普勒信息。 该装置包括用于使用希尔伯特变换将接收的I和Q信号变换成立体声音频信号的变压器; 以及源分离器,其通过对立体声音频信号执行源分离来消除来自立体声音频信号的干扰。
    • 8. 发明申请
    • RECEPTION AND TRANSMISSION CIRCUIT FOR A CAPACITIVE MICROMACHINED ULTRASONIC TRANSDUCER
    • 电容式微型超声波传感器的接收和传输电路
    • US20160076933A1
    • 2016-03-17
    • US14750312
    • 2015-06-25
    • STMicroelectronics S.r.l.
    • Antonio Davide LeoneDavide Ugo GhisuFabio Quaglia
    • G01H11/06G01S7/52G10K11/18
    • G01H11/06B06B1/0207B06B2201/51B06B2201/76G01S7/52019G01S7/52023G10K11/18
    • Described herein is a transceiver circuit for a capacitive micromachined ultrasonic transducer (CMUT), provided with: a transmitter stage, which generates excitation pulses for a first node of the CMUT transducer during a transmitting phase, a second node of the CMUT transducer being coupled to a biasing voltage; a receiver stage that is selectively coupled to the first node during a receiving phase and has an amplification stage; a switching stage that couples the receiver stage to the first node during the receiving phase and decouples the receiver stage from the first node during the transmitting phase. The amplification stage is provided with a charge amplifier that has an input terminal and is biased as a function of a biasing voltage; and the switching stage is coupled to the same biasing voltage thereby minimizing an injection of charge into the input terminal upon switching from the transmitting phase to the receiving phase.
    • 这里描述的是用于电容微加工超声换能器(CMUT)的收发器电路,其提供有:发射器级,其在发射阶段期间为CMUT换能器的第一节点产生激励脉冲,CMUT换能器的第二节点耦合到 偏置电压; 在接收阶段期间选​​择性地耦合到第一节点并具有放大级的接收机级; 切换阶段,在接收阶段将接收机级耦合到第一节点,并在发射阶段将接收机级与第一节点分离。 放大级具有电荷放大器,其具有输入端并作为偏置电压的函数被偏置; 并且开关级耦合到相同的偏置电压,从而在从发送阶段切换到接收阶段时最小化到输入端子中的电荷注入。
    • 10. 发明申请
    • ULTRASONIC MEASUREMENT APPARATUS, ULTRASONIC IMAGING APPARATUS, AND ULTRASONIC MEASUREMENT METHOD
    • 超声波测量装置,超声波成像装置和超声波测量方法
    • US20150071030A1
    • 2015-03-12
    • US14470508
    • 2014-08-27
    • Seiko Epson Corporation
    • Masaki HAYASHI
    • G01S7/52
    • G01S7/52023A61B8/4494G01S7/52047G01S7/5205G01S15/8915G01S15/8925G01S15/8927
    • An ultrasonic measurement apparatus that is able to prevent a decrease in the effects of adaptive beamforming, in the case where some element cannot correctly receive signals. The ultrasonic measurement apparatus has a reception processing unit that receives, via an ultrasonic element array having a plurality of channels, an ultrasonic echo relating to an ultrasonic wave transmitted toward an object, as a reception signal for each channel, an error detection unit that performs error detection for each channel, a signal processing unit that performs weighted addition of a reception signal for each normal channel other than an error channel for which an error was detected, with a weight that depends on the reception signal for the normal channel, and an image generation unit that generates an image based on a signal obtained from the weighted addition.
    • 在某些元件不能正确地接收信号的情况下,能够防止自适应波束成形的影响降低的超声波测量装置。 超声波测量装置具有接收处理单元,其经由具有多个通道的超声波元件阵列接收与朝向物体发送的超声波相关的超声波回波作为每个通道的接收信号;差错检测单元,其执行 每个通道的错误检测,对具有取决于正常信道的接收信号的权重,除了检测到错误的错误信道以外的每个正常信道执行加权相加的信号处理单元,以及 图像生成单元,其基于从加权相加获得的信号生成图像。