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公开(公告)号：US5349525A
公开(公告)日：1994-09-20
申请号：US2000
申请日：1993-01-08
申请人： Robert J. Dunki-Jacobs , Anne L. Hall , Richard B. Bernardi , Matthew O'Donnell , Lewis J. Thomas , Kenneth B. Welles, II , William E. Engeler
发明人： Robert J. Dunki-Jacobs , Anne L. Hall , Richard B. Bernardi , Matthew O'Donnell , Lewis J. Thomas , Kenneth B. Welles, II , William E. Engeler
CPC分类号： G01S7/52071 , G01S15/8981
摘要： An ultrasonic imaging system for displaying color flow images includes a receiver which demodulates ultrasonic echo signals received by a transducer array and dynamically focuses the baseband echo signals. A color flow processor includes a frequency domain adaptive wall filter which automatically adjusts to changes in Doppler-shifted frequency and bandwidth of the wall signal components in the focused baseband echo signals after the echo signals have undergone Fourier transformation into the frequency domain. The mean Doppler-shifted frequency of the resulting filtered baseband echo signals is used to indicate velocity of moving scatterers and to control color in the displayed image.
摘要翻译： 用于显示彩色流图像的超声波成像系统包括：解调由换能器阵列接收的超声回波信号的接收器，并且动态地聚焦基带回波信号。 色流处理器包括频域自适应壁滤波器，其在回波信号经过傅里叶变换到频域之后，自动调整聚焦的基带回波信号中的壁信号分量的多普勒频移和带宽的变化。 所得滤波的基带回波信号的平均多普勒频移用于表示运动散射体的速度和控制显示图像中的颜色。
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2.发明授权Method and apparatus for high speed digital phased array coherent imaging system 失效高速数字相控阵相干成像系统的方法与装置
公开(公告)号：US4839652A
公开(公告)日：1989-06-13
申请号：US56177
申请日：1987-06-01
申请人： Matthew O'Donnell , William E. Engeler , Thomas L. Vogelsong , Steven G. Karr , Sharbel E. Noujaim
发明人： Matthew O'Donnell , William E. Engeler , Thomas L. Vogelsong , Steven G. Karr , Sharbel E. Noujaim
CPC分类号： H03H17/0664 , G01S15/8918 , G01S7/52034 , G01S7/52046 , G10K11/346 , H03H2218/04
摘要： A method for generating an output stream of digital data words, with each data word representing the amplitude of an analog signal at one of a multiplicity F samples each second and with substantially equally spaced time intervals T therebetween, is obtained from a digital baseband demodulation system used for array beam forming. A data stream, formed of interleaved ADC output digital data words acquired from a set of converters, is at a rate of F total samples/second. Subsequent digital demodulation, filtration, and decimation provides digital output signals which need less delay resolution prior to the formation of coherent sum signals, thereby reducing overall channel memory requirements. The output baseband data stream has enhanced dynamic range, thereby reducing the ADC bit density requirements.
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公开(公告)号：US5111695A
公开(公告)日：1992-05-12
申请号：US551093
申请日：1990-07-11
CPC分类号： G10K11/346 , G01S7/52046
摘要： A method for dynamic focus of received energy, in a vibratory energy imaging system, into a beam in which contribution from transducers in an array of N such transducers, are progressively enabled to contribute to beam focussing dependent upon distance between a particular j-th transducer (where 1.ltoreq.j.ltoreq.N) is responsive to the depth, or range R, of the focal point at any instant of time; the initial steering angle .theta., with respect to the array normal, is used in conjunction with a range clock, to determine the time when each off-normal transducer channel is enabled to add to the beam (dynamic apodization) and to finely adjust the channel time delay to properly focus the beam after the enablement of the channel.
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4.发明授权Apparatus for implementation of desired input/output function in an electronic system having a plurality of channels 失效用于在具有多个通道的电子系统中实现期望的输入/输出功能的装置
公开(公告)号：US5047771A
公开(公告)日：1991-09-10
申请号：US518600
申请日：1990-05-03
CPC分类号： G06F1/03 , H03M1/1042 , H03M1/1235
摘要： Apparatus for providing a desired output signal as a function of a single-valued input signal in an electronic system, includes: an addressable memory, having a plurality L locations, each for storage of a data word of B bits; a circuit for storing in each of the L locations of the memory means a B-bit data word having a value selected to provide a particular output value; and circuitry for converting a present single-valued increment of input signal to a unique address, within the range of allowable locations of the memory, to cause each increment of input signal to select the associated one of the L data word locations, from which to output corresponding data.
摘要翻译： 用于在电子系统中提供作为单值输入信号的函数的期望输出信号的装置包括：具有多个L个位置的可寻址存储器，每个位置用于存储B位数据字; 用于在存储器装置的每个L位置存储具有被选择以提供特定输出值的值的B位数据字的电路; 以及用于在存储器的可允许位置的范围内将输入信号的当前单值增量转换为唯一地址的电路，以使输入信号的每个增量选择所述L个数据字位置中的相关联的一个， 输出相应的数据。
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5.发明授权Apparatus for testing data conversion/transfer functions in a vibratory energy imaging system 失效用于在振动能量成像系统中测试数据转换/传递功能的装置
公开(公告)号：US5047770A
公开(公告)日：1991-09-10
申请号：US518595
申请日：1990-05-03
摘要： Apparatus for testing data conversion/transfer functions in each of a plurality N of channels of a vibratory energy imaging system includes a multiplexer for providing, to an addressable memory having a plurality of L=2.sup.M locations in each of which a data word of B bits can be stored, a selected one of an input data word and a test data word, each of which can address one of the L locations of the memory means. The address multiplexer facilitates retrieval from memory of a B-bit data word having a value selected to implement a selected function for that channel, so that comparision of data from the selected test address with the data which has been sent to that location for storage, will indicate if proper data is stored for carrying out the designated function.
摘要翻译： 用于测试振动能量成像系统的多个N个通道中的每一个中的数据转换/传递功能的装置包括多路复用器，用于向具有多个L = 2M位置的可寻址存储器提供B位的数据字 可以存储输入数据字和测试数据字中的所选择的一个，每个可以寻址存储器装置的L个位置之一。 地址复用器便于从具有被选择为实现该信道的所选功能的值的B位数据字的存储器中检索，以便将来自所选测试地址的数据与已发送到该位置的数据进行比较以进行存储， 将指示是否存储正确的数据以执行指定的功能。
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6.发明授权Methods of correcting data conversion/transfer errors in a vibratory energy imaging system utilizing a plurality of channels 失效在利用多个通道的振动能量成像系统中校正数据转换/传送错误的方法
公开(公告)号：US5047769A
公开(公告)日：1991-09-10
申请号：US518596
申请日：1990-05-03
CPC分类号： H03M1/1042 , H03M1/1235
摘要： A method for correcting data conversion/transfer errors in each of a plurality N of channels of a vibratory energy imaging system, by: providing an addressable memory having a plurality L=2.sup.M locations, each for storage of a data word of B bits; then storing in each of the L locations of the memory means a B-bit data word having a value selected to cause the output-to-input transfer function for that channel to assume a desired relationship, with respect to a standard transfer measure; and selecting that one of the L data word locations, responsive to that actual one of an M-bit data word output from a channel ADC or from a data bus, responsive to a test signal, in which to place corresponding data.
摘要翻译： 一种用于通过以下方式来校正振动能量成像系统的多个N个通道中的每一个中的数据转换/传送错误的方法：提供具有多个L = 2M个位置的可寻址存储器，每个用于存储B位数据字; 然后在存储器装置的每个L位置存储一个B位数据字，该B位数据字被选择为使得该通道的输出到输入传递函数相对于标准传送测量呈现期望的关系; 以及响应于来自信道ADC或从数据总线输出的M位数据字中的实际的一个，响应于在其中放置相应数据的测试信号，选择L个数据字位置中的一个。
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公开(公告)号：US4983970A
公开(公告)日：1991-01-08
申请号：US500164
申请日：1990-03-28
CPC分类号： G01S7/52046 , G10K11/346
摘要： A method for generating a stream of digital data words, each representing an analog signal amplitude from a beam of vibratory energy received by a plurality N of transducers each associated with one of a like number of separate channels of a phased array, uses the steps of: sampling, after a delay of a multiple number of cycles at a fixed frequency F, an analog input signal in each channel at a fixed frequency F for conversion to a digital data word at each sample; then demodulating the digital data word stream in each channel to baseband and reducing the data word rate by a factor D; and phase-rotating the baseband data stream of each channel by a phase difference .DELTA..phi. determined by the focal range R and steering angle .theta. to obtain, along both the sampling delay, a different channel time delay t.sub.d,j, for each j-th channel, where 1.ltoreq.j.ltoreq.N, necessary to steer and focus the beam to a desired angle/range combination. Apparatus for generating the stream of digital data words is disclosed, and uses a special output-switching section in each channel to allow a pipelined coherent summation to be obtained across the entire phased transducer array.
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公开(公告)号：US4896287A
公开(公告)日：1990-01-23
申请号：US200491
申请日：1988-05-31
CPC分类号： H03C3/40 , G06F7/4812 , G06F7/4818 , G06F7/5446
摘要： A CORDIC (COordinate Rotation DIgital Computer) subsystem for multiplication of two complex digital numbers B and C, where one number is the sum of real and imaginary data portions, expressed in rectangular form (say C.sub.r or C.sub.I), and the other number can be expressed in the rectangular form or can be represented by magnitude data, expressed in polar form (say, .vertline.B.vertline., .phi.). An N-stage CORDIC portion of either recursive or pipeline sequential form, but devoid of multipliers, is used to rotate the I and Q terms of the first number through a phase angle .phi. of the polar-form multiplier number of the equivalent, taken from the rectangular form. The final computed data are the real and imaginary parts of the product.
摘要翻译： 用于乘以两个复数数字B和C的CORDIC（协调旋转二进制计算机）子系统，其中一个数字是以矩形形式表示的实数据和虚数据部分的总和（例如Cr或CI），另一个数字可以是 以矩形形式表示，或者可以用以极性形式（例如| B |，phi）表示的幅度数据来表示。 使用递归或流水线顺序形式的N阶CORDIC部分，但没有乘数，用于旋转第一个数字的I和Q项，通过相当于极性形式乘数的相位角phi，取自 矩形。 最终的计算数据是产品的实部和虚部。
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公开(公告)号：US4890268A
公开(公告)日：1989-12-26
申请号：US289942
申请日：1988-12-27
CPC分类号： B06B1/0629
摘要： A two-dimensional ultrasonic phase array is a rectilinear approximation to a circular aperture and is formed by a plurality of transducers, arranged substantially symmetrical about both a first (X) axis and a second (Y) axis and in a plurality of subarrays, each extended in a first direction (i.e. parallel to the scan axis X) for the length of a plurality of transducers determined for that subarray, but having a width of a single transducer extending in a second, orthogonal (the out-of-scan-plane, or Y) direction to facilitate dynamic focussing and/or dynamic apodization. Each subarray transducer is formed of a plurality of sheets (part of a 2-2 ceramic composite) all electrically connected in parallel by a transducer electrode applied to juxtaposed first ends of all the sheets in each transducer, while a common electrode connects the remaining ends of all sheets in each single X-coordinate line of the array.
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公开(公告)号：US5566133A
公开(公告)日：1996-10-15
申请号：US564551
申请日：1995-11-29
摘要： An optical communication system for ultrasound imaging systems employs a light source and photodetector array in the imaging console. The light source and photodetector array are coupled to each other through an optical fiber passing through the probe. Information from the probe is communicated to the console by an optical modulator, situated in the optical path from source to detector. The ultrasound signals are converted into electrical signals by probe electronics, and these electrical signals serve to alter either the phase or amplitude of optical signals passing through the modulator. Since the light source and photodetectors reside in the imaging console, very little power is dissipated in the probe.
摘要翻译： 用于超声成像系统的光通信系统在成像控制台中采用光源和光电检测器阵列。 光源和光电检测器阵列通过穿过探针的光纤彼此耦合。 来自探头的信息通过位于从源到检测器的光路中的光学调制器传送到控制台。 超声信号通过探针电子元件转换为电信号，这些电信号用于改变通过调制器的光信号的相位或幅度。 由于光源和光电检测器位于成像控制台中，因此在探头中消耗的功率很小。
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