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    • 1. 发明授权
    • Ultrasonic imaging apparatus
    • 超声波成像装置
    • US5261281A
    • 1993-11-16
    • US974661
    • 1992-11-12
    • Kageyoshi KatakuraShin-ichi KondoHiroshi Ikeda
    • Kageyoshi KatakuraShin-ichi KondoHiroshi Ikeda
    • G01S7/52G01N29/24
    • G01S7/52046
    • A phase adjustment circuit for use in an ultrasonic apparatus which respectively time-adjusts a plurality of received signals from an ultrasonic transducer array and sets wave fronts of the reflected waves from particular positions into an in-phase state and adds the in-phase signals, thereby obtaining a received beam. The received signals are mixed with phase-controlled reference signals. The low frequency component of the mixed wave is sequentially sampled and stored in a memory which is controlled by a clock signal of a predetermined period, and thereafter, the stored sampled signals are read out. Most of the necessary time adjustment results from the difference between the writing time and the reading time. The remaining micro time adjustment is performed by phase control of the reference signals.
    • 一种在超声波装置中使用的相位调整电路,其分别对来自超声波换能器阵列的多个接收信号进行时间调整,并且将来自特定位置的反射波的波前设定为同相状态,并将相位信号相加, 从而获得接收的波束。 接收的信号与相位控制的参考信号混合。 混合波的低频分量被顺序采样并存储在由预定周期的时钟信号控制的存储器中,然后读出所存储的采样信号。 大部分必要的时间调整来自写入时间和阅读时间之间的差异。 剩余的微时间调整通过参考信号的相位控制来执行。
    • 3. 发明授权
    • Receiving beam former and an ultrasonic imaging system using the same
    • 接收波束形成器和使用其的超声波成像系统
    • US5457996A
    • 1995-10-17
    • US64925
    • 1993-05-24
    • Shin-ichi KondoHiroshi KandaKageyoshi KatakuraRyuichi ShinomuraYuichi Miwa
    • Shin-ichi KondoHiroshi KandaKageyoshi KatakuraRyuichi ShinomuraYuichi Miwa
    • A61B8/00G01N29/34G01N29/36G01N29/40G01N29/44G01S7/52G10K11/34G01N29/00
    • G10K11/345G01N29/34G01N29/36G01N29/40G01S7/52046G01S7/52095G01N2291/106G01S7/52025
    • A receiving beamformer is provided which simultaneously generates a plurality of receiving beam signals corresponding to receiving beams of a plurality of directions on the basis of signals received by an array of vibrator elements for receiving an ultrasonic wave. This receiving beamformer includes a variable amplifying unit for amplifying the received signals in accordance with the depth of measurement to produce output signals, an A/D converting unit for converting the output signals from the variable amplifying unit into digital signals at a predetermined sampling period, a digital delay unit for receiving each of the digital signals and for producing a plurality of delayed signals corresponding to the receiving beams for each of the digital signals, and a first adding unit for adding the delayed signals corresponding to each of the receive beams and to the respective digital signals. The digital delay unit includes a first delay unit for delaying the respective digital signals at a unit delay time same as the sampling period to produce first delayed signals, and a second delay unit for delaying each of the first delayed signals at a unit delay time shorter than the sampling period to produce a plurality of delayed signals for each of the first delayed signals.
    • 提供接收波束形成器,其基于由用于接收超声波的振动器元件阵列接收的信号同时产生对应于多个方向的接收波束的多个接收波束信号。 该接收波束形成器包括可变放大单元,用于根据测量深度放大接收信号以产生输出信号; A / D转换单元,用于在预定采样周期将来自可变放大单元的输出信号转换为数字信号, 数字延迟单元,用于接收每个数字信号并产生与每个数字信号相对应的接收波束的多个延迟信号;以及第一加法单元,用于将对应于每个接收波束的延迟信号相加, 相应的数字信号。 数字延迟单元包括第一延迟单元,用于以与采样周期相同的单位延迟时间延迟相应的数字信号,以产生第一延迟信号;以及第二延迟单元,用于将每个第一延迟信号以单位延迟时间缩短 比采样周期产生用于每个第一延迟信号的多个延迟信号。
    • 4. 发明授权
    • Phase regulating apparatus of ultrasonic measuring devices
    • 超声波测量装置相位调节装置
    • US5271276A
    • 1993-12-21
    • US797025
    • 1991-11-25
    • Kageyoshi KatakuraToshio OgawaShin-ichi Kondo
    • Kageyoshi KatakuraToshio OgawaShin-ichi Kondo
    • G01N29/34G01N29/04
    • G01N29/348
    • A frequency transfer type phase adjustment apparatus for frequency-transferring a plurality of reception signals derived from arrayed ultrasonic transducer elements into low frequency components by mixing these reception signals with a reference signal, and for applying delays to these low frequency components so as to be summed with each other, comprises small delay circuits for applying very short delays to the respective reception signals before being frequency-transferred; and a quantizing delay circuit for applying delays obtained by multiplying a delay time unit by an integer, to the respective reception signals after being frequency-transferred. A ratio of the delay time unit to one-cycle period of the reference signal is equal to an integer ratio. Phase shifters are inserted into either the output sides or the input sides of the mixers for the respective signal channels used for the frequency transfer operation. These phase shifters are capable of selectable phase shift amounts from a finite number of phase shift amounts which have been prepared for compensating phase differences in the delayed reception signals.
    • 一种频率转移型相位调整装置,用于通过将这些接收信号与参考信号混合,将从阵列超声换能器元件导出的多个接收信号频率转换成低频分量,并将这些低频分量施加延迟以求相加 彼此包括小的延迟电路,用于在被频率传送之前对相应的接收信号施加非常短的延迟; 以及量化延迟电路,用于将通过将延迟时间单位乘以整数获得的延迟施加到频率转移之后的各个接收信号。 参考信号的延迟时间单位与一周期的比例等于整数比。 移相器插入混频器的输出侧或输入侧,用于频率传输操作中使用的各个信号通道。 这些移相器能够从已经准备好用于补偿延迟的接收信号中的相位差的有限数量的相移量的可选择的相移量。
    • 6. 发明授权
    • Ultrasonic imaging apparatus and method of forming an ultrasonic image
of an object
    • 超声波成像装置和形成物体的超声波图像的方法
    • US4793184A
    • 1988-12-27
    • US898518
    • 1986-08-21
    • Hiroshi IkedaKageyoshi KatakuraToshio OgawaShin'ichiro UmemuraShinichi Kondo
    • Hiroshi IkedaKageyoshi KatakuraToshio OgawaShin'ichiro UmemuraShinichi Kondo
    • G01S7/52G01S15/89G01N29/04
    • G01S7/52046G01S15/8918G01S7/52085
    • An ultrasonic imaging apparatus and method of forming an image of an acoustic image of an object employing the aperture synthesis technique, in which at least one partial aperture for accommodating a predetermined number of successive transducers is established and applied to a transducer array to select the predetermined number of successive transducers accommodated in the partial aperture so that the selected transducers serve to transmit ultrasonic acoustic signals to an object and receive signals reflected from the object, and the at least one partial aperture is specifically moved along the arrayed transducers for similar signal transmission to and/or signal reception from the object, whereby the apparatus and the method do not suffer substantial noise caused during changeover between transmitting and receiving operation modes and/or enjoy and enlarged aperture for signal transmission or enlarged aperture for signal reception with a suppressed decrease of the frame rate.
    • 一种使用孔径合成技术形成对象的声像的图像的超声波成像装置和方法,其中建立用于容纳预定数量的连续换能器的至少一个部分孔径并将其应用于换能器阵列以选择预定的 容纳在部分孔径中的连续换能器的数量,使得所选择的换能器用于向对象发射超声波信号并接收从物体反射的信号,并且至少一个部分孔径被特别地沿着阵列换能器移动以用于类似的信号传输 和/或来自对象的信号接收,由此该装置和方法不会在发送和接收操作模式之间切换期间产生实质的噪声和/或用于信号传输的享受和扩大的孔径或用于信号接收的扩大的孔径, 帧速率。
    • 8. 发明授权
    • Ultrasonic diagnosis apparatus
    • 超声诊断仪
    • US5060652A
    • 1991-10-29
    • US415668
    • 1989-10-02
    • Shinichiro UmemuraHiroshi IkedaKageyoshi Katakura
    • Shinichiro UmemuraHiroshi IkedaKageyoshi Katakura
    • G01N29/44A61B8/00A61B8/14G01S7/52G01S15/89G10K11/34
    • A61B5/4872A61B8/14G01S15/892G01S7/52049G10K11/346
    • An ultrasonic diagnosis apparatus for obtaining an ultrasonic echo image upon transmission/reception of a focussed ultrasonic beam by using an ultrasonic probe having curved array transducer elements disposed in a convexity. As the delay distribution data to be used for focussing respective transducer elements, a plurality of sets of delay distribution data, each set corresponding to a particular thickness of a fat layer under a skin of a specimen, are stored in a memory. In imaging the specimen, a set of the plurality of sets of delay distribution data is selected and read in accordance with the thickness of the fat layer of the specimen to control the delay distribution of a transmission or reception signal for respective transducer elements to thereby eliminate focussing errors to be caused by the concave lens effect of the fat layer.
    • 一种超声波诊断装置,用于通过使用具有设置在凸部中的具有弯曲阵列换能器元件的超声波探头来发送/接收聚焦超声波束来获得超声波回波图像。 作为用于聚焦各个换能器元件的延迟分布数据,存储器中存储多个对应于样本皮肤下面的脂肪层的特定厚度的延迟分布数据组。 在样本成像中,根据样本的脂肪层的厚度来选择和读取多组延迟分布数据的集合,以控制各个换能器元件的发送或接收信号的延迟分布,从而消除 由脂肪层的凹透镜效应引起的聚焦误差。