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公开(公告)号：US4440025A
公开(公告)日：1984-04-03
申请号：US277816
申请日：1981-06-26
申请人： Yoshihiro Hayakawa , Tsutomu Yano , Ryobun Tachita , Hiroshi Fukukita , Kazuyoshi Irioka , Akira Fukumoto
发明人： Yoshihiro Hayakawa , Tsutomu Yano , Ryobun Tachita , Hiroshi Fukukita , Kazuyoshi Irioka , Akira Fukumoto
IPC分类号： H04R17/00 , A61B8/00 , A61B8/14 , B06B1/06 , G01S7/521 , G01S7/523 , G01S15/89 , G10K11/02 , G10K11/30 , G10K11/32 , G10K11/34 , G01N29/00
CPC分类号： G01S15/892 , B06B1/0633 , G10K11/02 , G10K11/32
摘要： An ultrasonic transducer array for arc scan imaging systems comprises a plurality of elongated piezoelectric transducers arranged successively to define a convexed energy radiating surface. A plano-concave acoustic diverging lens is attached to the convexed surface to diverge the acoustic energy transmitted from the transducers in an increased steering angle. The transducers are assembled on an impedance matching layer which defines the convexed radiating surface. The acoustic impedance of the diverging lens is substantially equal to the acoustic impedance of the human body, while the acoustic impedance of the impedance matching layer is greater than that of the human body.
摘要翻译： 用于电弧扫描成像系统的超声换能器阵列包括多个细长的压电换能器，其连续布置以限定凸起的能量辐射表面。 平凹声扩散透镜附着到凸起的表面上，以在增加的转向角度上分离从换能器传递的声能。 换能器组装在限定凸起辐射表面的阻抗匹配层上。 发散透镜的声阻抗基本上等于人体的声阻抗，而阻抗匹配层的声阻抗大于人体的声阻抗。
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2.发明授权Combination tomographic and cardiographic ultrasonic imaging method and system 失效组合断层扫描和心脏超声成像方法及系统
公开(公告)号：US4423737A
公开(公告)日：1984-01-03
申请号：US231935
申请日：1981-02-04
申请人： Tsutomu Yano , Yoshihiro Hayakawa , Ryobun Tachita , Kazuyoshi Irioka , Hiroshi Fukukita , Akira Fukumoto
发明人： Tsutomu Yano , Yoshihiro Hayakawa , Ryobun Tachita , Kazuyoshi Irioka , Hiroshi Fukukita , Akira Fukumoto
CPC分类号： A61B8/14 , G01S15/8918 , G01S7/52074
摘要： Ultrasonic echo signals are successively sampled and converted to digital echo data which are written into a first digital memory column by column and then read out row by row into a first buffer memory. The digital echo data which are derived in response to beams successively transmitted in a predetermined direction are written into columns of a second digital memory and read out of the memory in rows into a second buffer memory. The data stored in the first and second buffer memories are read out for digital-to-analog conversion and selectively applied within a television "frame" interval to control electron beam intensity of a single cathode ray tube so as to present tomographic and cardiographic images in different display areas of the tube.
摘要翻译： 超声波回波信号被连续采样并转换成数字回波数据，数字回波数据逐列地写入第一数字存储器，然后逐行读出到第一缓冲存储器中。 响应于沿预定方向连续发送的波束而导出的数字回波数据被写入第二数字存储器的列，并以行的形式从存储器读出到第二缓冲存储器中。 读出存储在第一和第二缓冲存储器中的数据进行数模转换，并选择性地施加在电视“帧”间隔内以控制单个阴极射线管的电子束强度，以便将断层摄影和心电图像呈现在 管的不同显示区域。
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3.发明授权Ultrasonic imaging system using plural square wave pulse trains of successively delayed intervals 失效超声波成像系统采用多个方波脉冲序列连续延时
公开(公告)号：US4348902A
公开(公告)日：1982-09-14
申请号：US206827
申请日：1980-11-14
申请人： Ryobun Tachita , Yoshihiro Hayakawa , Kazuyoshi Irioka , Hiroshi Fukukita , Tsutomu Yano , Akira Fukumoto
发明人： Ryobun Tachita , Yoshihiro Hayakawa , Kazuyoshi Irioka , Hiroshi Fukukita , Tsutomu Yano , Akira Fukumoto
CPC分类号： G01S7/52063
摘要： A sector scan ultrasonic imaging system comprises a source of a plurality of square wave pulse trains each being delayed by a unit quantization time with respect to adjacent trains, and a plurality of transmitter circuits corresponding to the elements of a transducer array. The duration of each square wave pulse is an integral multiple of the unit quantization time interval. Each transmitter circuit includes a read only memory in which a set of different digital delay time data is stored for the corresponding transducer element and is arranged to be retrieved in response to each angle increment of the ultrasonic beam transmitted from the array. Further included are a data selector for selecting a pulse train in response to a pulse train selection data retrieved from the memory and a programmable counter for counting the pulses of the selected train to generate an output in accordance with a pulse selection data retrieved from the memory. An Exclusive-OR gate is further included to provide bit inversion of the selected pulse train in selective response to the binary state of a data retrieved from the memory so that the number of available square wave pulse trains is doubled. A gating circuit responds to the output of the counter by gating a pulse of the selected pulse train to the corresponding transducer element.
摘要翻译： 扇区扫描超声成像系统包括多个方波脉冲串的源，每个方波延迟相对于相邻列的单位量化时间，以及对应于换能器阵列的元件的多个发射器电路。 每个方波脉冲的持续时间是单位量化时间间隔的整数倍。 每个发射机电路包括只读存储器，其中针对相应的换能器元件存储一组不同的数字延迟时间数据，并且被布置为响应于从阵列发射的超声波束的每个角度增量而被检索。 还包括一个数据选择器，用于响应于从存储器检索的脉冲序列选择数据选择一个脉冲序列，以及一个可编程计数器，用于根据从存储器检索的脉冲选择数据计算所选择的列车的脉冲以产生一个输出 。 进一步包括异或门以提供选择性响应于从存储器检索的数据的二进制状态的所选脉冲序列的位反转，使得可用的矩形波脉冲序列的数量加倍。 门控电路通过将所选择的脉冲串的脉冲门控到相应的换能器元件来响应计数器的输出。
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4.发明授权Arc scan ultrasonic imaging system having diverging lens and path-length compensator 失效具有发散透镜和路径长度补偿器的电弧扫描超声成像系统
公开(公告)号：US4470308A
公开(公告)日：1984-09-11
申请号：US404917
申请日：1982-08-03
申请人： Yoshihiro Hayakawa , Tsutomu Yano , Ryobun Tachita , Hiroshi Fukukita , Kazuyoshi Irioka , Akira Fukumoto
发明人： Yoshihiro Hayakawa , Tsutomu Yano , Ryobun Tachita , Hiroshi Fukukita , Kazuyoshi Irioka , Akira Fukumoto
IPC分类号： H04R17/00 , A61B8/00 , A61B8/14 , B06B1/06 , G01S7/521 , G01S7/523 , G01S15/89 , G10K11/02 , G10K11/30 , G10K11/32 , G10K11/34 , G01N29/00
CPC分类号： G01S15/892 , B06B1/0633 , G10K11/02 , G10K11/32
摘要： An ultrasonic imaging system comprises a transducer array including a plurality of elongated piezoelectric transducers successively arranged along a curved surface for emission of diverging beams of acoustic energy and an acoustic diverging lens affixed to the curved surface for increasing the angle of divergence of the emitted acoustic energy. The system includes a source for successively generating burst energy and means for selectively establishing a connection from the energy source to a subarray of the transducers to transmit a beam of acoustic energy therefrom and shifting the connection to the next subarray by at least one transducer in response to the generation of subsequent acoustic energy to cause the emitted acoustic energy to be angulated in an arc scan format. Means are provided for compensating for differences in energy level resulting from the differences in the path-length of the acoustic lens.
摘要翻译： 超声波成像系统包括换能器阵列，其包括沿着弯曲表面连续布置的多个细长的压电换能器，用于发射发散的声能束，以及固定到弯曲表面的声发散透镜，用于增加发射的声能的发散角 。 该系统包括用于连续产生突发能量的源和用于选择性地建立从能量源到换能器的子阵列的连接的装置，以从其传输声能束，并响应于至少一个换能器将连接移动到下一个子阵列 以产生随后的声能以使发射的声能以弧扫描格式成角度。 提供了用于补偿由声透镜的路径长度差异引起的能量差异的装置。
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公开(公告)号：US4310907A
公开(公告)日：1982-01-12
申请号：US100707
申请日：1979-12-04
申请人： Ryobun Tachita , Yoshihiro Hayakawa , Hiroshi Fukukita , Tsutomu Yano , Kazuyoshi Irioka , Akira Fukumoto
发明人： Ryobun Tachita , Yoshihiro Hayakawa , Hiroshi Fukukita , Tsutomu Yano , Kazuyoshi Irioka , Akira Fukumoto
CPC分类号： G01S7/52044
摘要： A scan converter is disclosed for use in a sector scan type ultrasound imaging system in which ultrasound echo signals return from targets along a plurality of radial scan lines distributed in a sector field with a substantially equal tangential angular increment with respect to a reference line. The scan converter comprises a sampling circuit which samples the echo signals at a speed inversely proportional to the cosine of the angle of deflection of the radial scan lines with respect to the reference line so that the sampled points align themselves in lateral lines perpendicular to the reference line. The sampled echo signals are converted into digital echo data and stored in a random access memory in the direction of its columns. The stored data are retrieved serially in the direction of the rows and fed into an interpolator for making interpolations between the successively retrieved echo data. The interpolation data are read into a line memory in succession with the data retrieved from the RAM during each raster scan interval, and then retrieved at a constant rate from preselected storage locations so that the data on the raster scan lines have approximately equal density. The retrieved data from the line memory are converted in analog signals and displayed on a viewing screen.
摘要翻译： 公开了一种用于扇区扫描型超声成像系统的扫描转换器，其中超声回波信号沿着分布在扇区中的多个径向扫描线从目标返回，其具有相对于参考线的基本相等的切角增量。 扫描转换器包括采样电路，该采样电路以与扫描线相对于参考线的偏转角的余弦成反比的速度对回波信号进行采样，使得采样点在与参考线垂直的横向线上对齐 线。 采样的回波信号被转换成数字回波数据，并在其列的方向上存储在随机存取存储器中。 存储的数据在行的方向上被串行检索，并被馈送到用于在连续检索的回波数据之间进行内插的内插器。 插补数据在每个光栅扫描间隔期间从RAM中检索的数据连续读入行存储器，然后以预定的存储位置以恒定速率检索，使得光栅扫描线上的数据具有大致相等的密度。 来自行存储器的检索数据被转换为模拟信号并显示在观看屏幕上。
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公开(公告)号：US4552152A
公开(公告)日：1985-11-12
申请号：US513323
申请日：1983-07-13
CPC分类号： A61B8/06
摘要： Ultrasonic echo signals are detected in phase and integrated with a period corresponding to an ultrasonic pulse. The integrated values are sampled and the difference between two integrated values is successively frequency-analyzed.
摘要翻译： 超声波回波信号被相位检测并且与对应于超声脉冲的周期集成。 对积分值进行采样，并对两个积分值之间的差值进行连续频率分析。
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7.发明授权Two-dimensional linear B-scan ultrasound diagnostic apparatus with phase and amplitude tapering 失效二维线性B扫描超声诊断仪具有相位和幅度逐渐减小
公开(公告)号：US4224829A
公开(公告)日：1980-09-30
申请号：US962609
申请日：1978-11-21
CPC分类号： G10K11/345 , G01N29/06 , G01N29/245 , G01S7/5206
摘要： An ultrasound diagnostic apparatus includes a linear array of piezoelectric transducers or plates with a width-to-thickness ratio of less than 0.8 and a control circuit which includes a transmitter and a receiver. The transmitter comprises a plurality of transmitting channels each including a local oscillator for generating an ultrasonic pulse in response to a clock signal. The plurality of such ultrasonic pulses are applied through a switching network to a selected group of successively arranged piezoelectric transducers to transmit a beam of ultrasonic energy into a human body. Each of the ultrasonic pulses is phase shifted and amplitude modulated with respect to the ultrasonic pulses of the other transmitting channels to provide phase and amplitude taper which results in a narrow width beam through the depth of the body. The ultrasonic energy returned from discontinuities between different tissues is detected by the activated transducers and applied through the switching network to the receiver in which each of the return signals is phase shifted and amplitude modulated with respect to the other signals to provide an output signal which is displayed on a cathode ray tube screen.
摘要翻译： 超声波诊断装置包括宽度与厚度比小于0.8的压电换能器或板的线性阵列和包括发射器和接收器的控制电路。 发射机包括多个发射信道，每个发射信道包括响应于时钟信号产生超声波脉冲的本地振荡器。 多个这样的超声波脉冲通过切换网络施加到所选择的一组连续布置的压电换能器，以将超声能量束传输到人体内。 每个超声波脉冲相对于其他发射通道的超声波脉冲进行相移和幅度调制，以提供相位和幅度锥度，这导致通过身体深度的窄宽度束。 通过激活的换能器检测从不同组织之间的不连续性返回的超声能量，并通过开关网络将其施加到接收机，其中每个返回信号相对于其他信号被相移和幅度调制以提供输出信号， 显示在阴极射线管屏幕上。
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公开(公告)号：US4101795A
公开(公告)日：1978-07-18
申请号：US807600
申请日：1977-06-17
CPC分类号： B06B1/0622 , A61B8/4494 , G10K11/02
摘要： An ultrasonic probe particularly suitable for ultrasonic diagnostic equipments of the electronic scanning type is made up of a multiplicity of piezoelectric transducer elements, each in the shape of a rectangular plate with electrode films coated on both sides, arranged in a row at intervals and an acoustic impedance matching layer placed on the row of the transducer elements. The width-to-thickness ratio of each piezoelectric plate takes a value not greater than 0.8 and preferably between 0.4 and 0.7 so that the plate can vibrate in width expansion mode. It is highly preferable that the impedance matching layer has a laminated structure given by two layers which are different in acoustic impedance of the respective materials and individually have definite thicknesses.
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公开(公告)号：US07528442B2
公开(公告)日：2009-05-05
申请号：US11399441
申请日：2006-04-07
申请人： Akira Fukumoto , Rie Watanabe
发明人： Akira Fukumoto , Rie Watanabe
IPC分类号： H01L29/72
CPC分类号： H01L29/1083 , H01L29/7833
摘要： In this invention, the semiconductor device is provided with a gate electrode formed on a gate insulating film in a region sectioned by an element isolation formed on a semiconductor layer of the first conduction type, and a source region and a drain region of the second conduction type. At least one of the source region and the drain region has a first low concentration region and a high concentration region. Also, the semiconductor device of the present invention is provided with a second low concentration region of the second conduction type between a channel stopper region formed below the element isolation and the source region, and between the channel stopper region and the drain region. The semiconductor layer immediately below the gate electrode projects to the channel stopper region side along the gate electrode, and the semiconductor layer and the channel stopper region make contact with each other.
摘要翻译： 在本发明中，半导体器件设置有形成在栅极绝缘膜上的栅电极，该栅电极由形成在第一导电类型的半导体层上的元件隔离区域和第二导电的源极区域和漏极区域 类型。 源极区域和漏极区域中的至少一个具有第一低浓度区域和高浓度区域。 此外，本发明的半导体器件在第一导电类型的第二低浓度区域之间设置在形成于元件隔离部之下的沟道阻挡区域与源极区域之间以及沟道阻挡区域与漏极区域之间。 栅电极正下方的半导体层沿着栅极突出到沟道截止区侧，半导体层和沟道截止区相互接触。
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公开(公告)号：US4699150A
公开(公告)日：1987-10-13
申请号：US864563
申请日：1986-05-16
申请人： Masami Kawabuchi , Koji Matsuo , Fumio Muramatsu , Akira Fukumoto , Koetsu Saito
发明人： Masami Kawabuchi , Koji Matsuo , Fumio Muramatsu , Akira Fukumoto , Koetsu Saito
摘要： An ultrasonic transducer for medical diagnostic examinations which comprises a transducer element having one surface through ultrasonic waves are emitted, an acoustic impedance matcher, and a contact member brought to contact with an object being examined and formed on the one surface of the ultrasonic transducer element. The contact member includes at least a flat plate or an acoustic lens made of a-4-methylpentene-1-base polymer which has high mechanical strength. Transducer arrays and assemblies using such polymer as a member directly contacted with human body are also described.
摘要翻译： 发射用于医疗诊断检查的超声波换能器，其包括具有通过超声波的一个表面的换能器元件，声阻抗匹配器和与被检查物体接触并且形成在超声换能器元件的一个表面上的接触构件。 接触构件至少包括具有高机械强度的由4-甲基戊烯-1-基聚合物制成的平板或声透镜。 还描述了使用这种聚合物作为与人体直接接触的部件的传感器阵列和组件。
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