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1.发明授权
公开(公告)号：US5204635A
公开(公告)日：1993-04-20
申请号：US838738
申请日：1992-03-11
Applicant: Yasuhito Takeuchi
Inventor： Yasuhito Takeuchi
CPC classification number: H03D3/20 , H03M1/504 , H03M3/00 , H03D2200/0047 , H03D2200/0056 , H03D2200/0082
Abstract: An FM demodulator which generates a modulated object signal directly in digital form, wherein an input FM signal is phase detected, then converted to digital form, then quantized into a pulse density modulated binary signal using a clock reference signal having a frequency which is not correlated to the frequency of the input FM signal, and then the signal is filtered at the clock reference signal and outputted as the digital word output. Advantageously, by using the non-correlated clock reference signal, the signal to noise ratio is improved by a substantial factor.
Abstract translation: PCT No.PCT / JP91 / 00917 Sec。 371日期：1992年3月11日 102（e）1992年3月11日PCT PCT 1991年7月9日PCT公布。 第WO92 / 01332号公报 一种FM解调器，其直接以数字形式生成调制对象信号，其中输入FM信号被相位检测，然后转换成数字形式，然后使用时钟参考信号量化为脉冲密度调制二进制信号 具有与输入FM信号的频率不相关的频率，然后在时钟参考信号处对信号进行滤波并作为数字字输出输出。 有利的是，通过使用非相关的时钟参考信号，通过实质的因素提高了信噪比。
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公开(公告)号：US4881212A
公开(公告)日：1989-11-14
申请号：US270157
申请日：1988-10-18
Applicant: Yasuhito Takeuchi
Inventor： Yasuhito Takeuchi
CPC classification number: A61B8/4281 , G10K11/02
Abstract: This invention is basically, an ultrasonic transducer that can be configured with good reproducibility, that includes an acoustic impedance matching member that gradually changes the acoustic impedance, and which is characterized byAn acoustic impedance matching member(2) configured with multiple unit layers (21, 22, 23, . . . 2n), each layer being thinner than a quarter-wavelength of an ultrasonic wave, andeach unit layer having a laiminated structure make up of heavy metal(52) and plastic(51) layers with a thickness ratio set between them to change gradually from the unit layer close to the ultrasonic oscillator to the unit layer close to the subject.
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公开(公告)号：US4817617A
公开(公告)日：1989-04-04
申请号：US171191
申请日：1988-03-07
Applicant: Yasuhito Takeuchi , Takao Higashiizumi , Hideya Akasaka , Takao Jibiki , Shinichi Sano
Inventor： Yasuhito Takeuchi , Takao Higashiizumi , Hideya Akasaka , Takao Jibiki , Shinichi Sano
CPC classification number: G01S15/8979
Abstract: A diagnostic imaging apparatus is disclosed in which an ultrasonic wave transmit/receive apparatus is used in common for both 2-dimensional B-mode imaging and for measurement of pulsed Doppler signals, by time sharing operation. The good real time characteristics of 2-dimensional B-mode imaging are retained, together with a sufficiently high data rate for pulsed Doppler measurement, through use of simple means for performing interpolation in the Doppler signals Ultrasonic wave transmit/receive means (21,23 to 25,27) repetitively execute combinations of ultrasonic wave transmit/receive sequences, each combination consisting of a plurality of pulsed Doppler mode ultrasonic wave transmit/receive sequences and a single 2-dimensional B-mode imaging ultrasonic wave transmit/receive sequence. Demodulator means (38 to 41) demodulate the Doppler signals, based on the received signals that are acquired during the pulsed Doppler mode ultrasonic wave transmit/receive sequences. Sampling means (42 to 44) perform range gate sampling of the demodulated Doppler signals, and interpolation means (45) interpolate sampling values into the Doppler signal to replace sampling values which are lost during execution of the 2-dimensional B-mode imagaing ultrasonic wave transmit/receive sequences. Doppler signal processing means (46 to 48 ) perform processing of the sampling signals following interpolation. 2-dimensional B-mode imaging means process the received signal that is acquired by the 2-dimensional B-mode imaging sequences.
Abstract translation: 公开了一种诊断成像装置，其中超声波发射/接收装置通常用于二维B模式成像和脉冲多普勒信号的测量，通过分时操作。 通过使用在多普勒信号中执行插值的简单手段，保留了二维B模式成像的良好实时特性以及用于脉冲多普勒测量的足够高的数据速率。超声波发射/接收装置（21,23 重复执行超声波发送/接收序列的组合，每个组合由多个脉冲多普勒模式超声波发射/接收序列和单个2维B模式成像超声波发射/接收序列组成。 基于在脉冲多普勒超声波发射/接收序列期间获取的接收信号，解调器装置（38至41）解调多普勒信号。 采样装置（42至44）对解调的多普勒信号进行范围门采样，并且插值装置（45）将采样值内插到多普勒信号中以替代在执行二维B模式想像超声波期间丢失的采样值 发送/接收序列。 多普勒信号处理装置（46〜48）进行插补后的采样信号的处理。 2维B模式成像装置处理通过2维B模式成像序列获取的接收信号。
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公开(公告)号：US4720674A
公开(公告)日：1988-01-19
申请号：US841522
申请日：1986-03-10
Applicant: Yasuhito Takeuchi , Shinichi Sano , Takao Jibiki , Takao Higashiizumi
Inventor： Yasuhito Takeuchi , Shinichi Sano , Takao Jibiki , Takao Higashiizumi
CPC classification number: G01S15/582 , G01R23/16
Abstract: A Doppler signal analyzing apparatus is capable of frequency analysis of a Doppler signal with frequency and time resolutions that match the frequency band of a signal to be analyzed. The signal to be analyzed is divided into a plurality of frequency bands by bandpass means (10.sub.1, 10.sub.2, 10.sub.3), and signals in the frequency bands which have passed through the bandpass means are acquired by signal acquiring means (11) over time slots that are smaller for higher-frequency signals and larger for lower-frequency signals. The signals acquired by the signal acquiring means are subjected to a Fourier transform by Fourier transform means (14).
Abstract translation: 多普勒信号分析装置能够对与要分析的信号的频带匹配的频率和时间分辨率的多普勒信号进行频率分析。 要被分析的信号被带通装置（101,102,103）分成多个频带，并且已经通过带通装置的频带中的信号被信号获取装置（11）通过时隙获得， 对于较高频率信号较小，较低频率信号较小。 由信号获取装置获取的信号通过傅立叶变换装置（14）进行傅里叶变换。
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公开(公告)号：US4694680A
公开(公告)日：1987-09-22
申请号：US765435
申请日：1985-07-26
Applicant: Yasuhito Takeuchi , Yuichi Hirota , Shinichi Sano , Shinichi Ishiguro
Inventor： Yasuhito Takeuchi , Yuichi Hirota , Shinichi Sano , Shinichi Ishiguro
CPC classification number: G01S7/5205
Abstract: The equipment in this invention provided with an internal signal checking means configured in a combined use with signal processing and display means commonly furnished to an ultrasound diagnostic equipment stores various internal signals and in said equipment by selectively inputting them through a multiplexer into a video memory also used for receive echo signal storage, and said internal signals stored are displayed on a screen of a display means of said equipment as an image or they are evaluated by a processor in said equipment to perform internal signal checking.
Abstract translation: PCT No.PCT / JP84 / 00615 Sec。 371日期：1985年7月26日 102（e）日期1985年7月26日PCT提交1984年12月26日PCT公布。 公开号WO85 / 02761 日本1985年7月4日。本发明的设备具有内部信号检查装置，其被配置为与信号处理和显示装置的组合使用，通常配备到超声诊断设备存储各种内部信号，并且在所述设备中通过选择性地将它们输入 多路复用器也用于接收回波信号存储的视频存储器，并且存储的所述内部信号作为图像显示在所述设备的显示装置的屏幕上，或者由所述设备中的处理器评估以执行内部信号检查。
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Patent Agency Ranking6.发明授权Method of manufacturing an ultrasonic probe and the ultrasonic probe and an ultrasonic imaging apparatus 有权超声波探头和超声波探头的制造方法以及超声波成像装置
公开(公告)号：US6095978A
公开(公告)日：2000-08-01
申请号：US169827
申请日：1998-10-10
Applicant: Yasuhito Takeuchi
Inventor： Yasuhito Takeuchi
CPC classification number: B06B1/0629 , G01N29/0609 , Y10T29/42
Abstract: In order to reduce the impedance of an ultrasonic transducer array, an ultrasonic probe is provided in which a plurality of holes 34 are disposed running in the thickness direction of a piezoelectric material plate 32 and electrodes 36 are provided on the internal walls of the holes so as to exploit the ultrasonic vibration of the wall of piezoelectric material between the adjacent holes according to the electromechanical coupling coefficient k.sub.31. An ultrasonic imaging apparatus employing such an ultrasonic probe is also provided.
Abstract translation: 为了减小超声波换能器阵列的阻抗，提供了一种超声波探头，其中多个孔34沿着压电材料板32的厚度方向设置，电极36设置在孔的内壁上， 根据机电耦合系数k31利用相邻孔之间的压电材料壁的超声波振动。 还提供了采用这种超声波探头的超声波成像装置。
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公开(公告)号：US5848968A
公开(公告)日：1998-12-15
申请号：US874549
申请日：1997-06-13
Applicant: Yasuhito Takeuchi
Inventor： Yasuhito Takeuchi
CPC classification number: A61B8/481 , A61K49/223 , G01S15/8906 , G01S15/897 , G01S7/52017
Abstract: An ultrasonic imaging apparatus devised to implement contrast imaging of enhanced S/N ratios. The apparatus comprises: an exciting unit for generating ultrasonic waves by stimulating a contrast medium introduced into a target object; a contrast image creating unit for creating a contrast image based on the ultrasonic waves generated through stimulation; an echo generating unit for generating echoes of the ultrasonic waves transmitted into the target object; an echo image creating unit for creating an echo image based on the generated echoes; and a display unit for superimposing the contrast image and the echo image for display.
Abstract translation: 设计用于实现增强的S / N比的对比度成像的超声成像装置。 该装置包括：激励单元，用于通过刺激引入到目标物体中的造影剂产生超声波; 对比图像生成单元，用于基于通过刺激产生的超声波来创建对比度图像; 回波产生单元，用于产生发射到目标物体中的超声波的回波; 回波图像创建单元，用于基于所生成的回波创建回波图像; 以及用于叠加对比图像和用于显示的回波图像的显示单元。
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公开(公告)号：US5823963A
公开(公告)日：1998-10-20
申请号：US804440
申请日：1997-02-21
Applicant: Yasuhito Takeuchi
Inventor： Yasuhito Takeuchi
CPC classification number: G01S15/8993 , A61B8/00 , A61B8/483 , Y10S128/916
Abstract: A stereoscopic ultrasonic imaging apparatus for displaying in a short time an ultrasonic image giving a sense of perspective. The apparatus comprises: two two-dimensional ultrasonic receiving element arrays arranged a predetermined distance apart; an orthoscopic image generation unit for generating a plurality of orthoscopic images of an observed surface perpendicularly intersecting an ultrasonic beam applied, the orthoscopic images having a predetermined parallax therebetween and generated on the basis of received ultrasonic data obtained by the element arrays; and a stereoscopic display unit for displaying stereoscopically the orthoscopic images generated by the orthoscopic image generation unit.
Abstract translation: 一种用于在短时间内显示给出透视感的超声波图像的立体超声波成像装置。 该装置包括：两个布置成预定距离的二维超声波接收元件阵列; 用于产生与施加的超声波束垂直相交的观察表面的多个无畸变图像的无畸变图像生成单元，其中具有预定视差的无畸形图像根据由所述元件阵列获得的接收超声波数据而生成; 以及立体显示单元，其用于立体地显示由所述无畸形图像生成单元生成的所述无畸形图像。
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公开(公告)号：US4759373A
公开(公告)日：1988-07-26
申请号：US57969
申请日：1987-05-18
Applicant: Yasuhito Takeuchi
Inventor： Yasuhito Takeuchi
CPC classification number: G01S15/8979
Abstract: An ultrasonic pulse Doppler apparatus has: range gate (20) for separately performing range-gating of the respective received ultrasonic echo signals of the oscillation elements of an ultrasonic probe (1) each time the signals are respectively adjusted in correspondence with the direction of a received ultrasonic beam; pulse stretcher filter (21) for extending the duration of the respective plurality of range-gated received signals while storing the energy of the signals; phasing/adding stage (7a) for matching the phases of a plurality of output signals from the pulse stretcher filter and performing addition thereof; detection portion (12) for effecting coherent detection of an output signal from said phasing/adding stage; and Doppler signal generating components (15, 16) for respectively generating Doppler signals on the basis of an output signal from the detection portion.The received echo signal of each of the oscillation elements is range-gated, and the duration of the respective range-gated signals is extended by the pulse stretcher filter. Subsequently, the signals are matched in phase and added. Accordingly, the level of the received signal hardly reaches the limit of the dynamic range of a signal processing circuit employed.
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公开(公告)号：US4463608A
公开(公告)日：1984-08-07
申请号：US145852
申请日：1980-05-01
Applicant: Yasuhito Takeuchi , Keiki Yamaguchi
Inventor： Yasuhito Takeuchi , Keiki Yamaguchi
CPC classification number: G01S15/8965 , G01H3/125
Abstract: The invention relates to an ultrasonic imaging system for diagnostic use or non-destructive testing. The system comprises a first array of ultrasonic transducers coupled to the object space wherein objects under examination are located or distributed; a second array of ultrasonic transducers coupled to a reconstitution space wherein the acoustic images of the objects are to be replicated; and time inversion means. The time inversion means has a set of waveform memories which first captures the ultrasonic signals from said objects, typically echos produced in response to suitable excitation, via said first array of ultrasonic transducers with suitable amplification and preconditioning as necessary. Then readouts of these signals are provided inversely in time which drive the second array of ultrasonic transducers with said time inverted signals to reproject inversely propagating ultrasonic wavetrains forming replicated acoustic images of the objects. By optically monitoring the ultrasonic energy distribution in said reconstitution space, via an opto-acoustic interaction effect, the system enables the observation of the object images in real time on each complete acquisition of said ultrasonic signal set at the first array of transducers, i.e. one complete picture per each echo sounding, which means in case of a medical diagnostic system of up to several thousand pictures per second.
Abstract translation: 本发明涉及用于诊断用途或非破坏性测试的超声成像系统。 该系统包括耦合到对象空间的第一超声波换能器阵列，其中检查对象被定位或分布; 耦合到重建空间的第二组超声波换能器，其中将复制对象的声像; 和时间反转装置。 时间反转装置具有一组波形存储器，其首先通过所述第一阵列超声波换能器捕获来自所述物体的超声波信号，所述超声波信号通常响应于合适的激发产生的回波，具有必要的合适的放大和预处理。 然后这些信号的读出与时间相反地提供，其中驱动具有所述时间反转信号的第二阵列的超声波换能器以重新制造形成对象的复制声像的反向传播的超声波波长。 通过光学监测所述重建空间中的超声波能量分布，通过光声相互作用效应，该系统使得能够在第一阵列换能器上对所述超声波信号集进行每次完全采集时实时观察对象图像，即一个 每个回声发声完整的图像，这意味着在医疗诊断系统的情况下，每秒可以有几千张图片。
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