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    Implement height control method and apparatus
    2.
    发明公开
    Implement height control method and apparatus 失效
    实施高度控制方法和装置

    公开(公告)号：EP0511768A3

    公开(公告)日：1994-06-01

    申请号：EP92303534.9

    申请日：1992-04-21

    申请人： NEW HOLLAND BELGIUM N.V.

    发明人： Sheenan, Ronald T. ,  Mitchell, Peter G. ,  Bagg, Charles G.

    IPC分类号： G01S15/10 ,  G01S15/04 ,  A01D41/14 ,  A01B63/114 ,  G01S15/88

    CPC分类号： A01D41/141 ,  G01S15/101 ,  G01S15/108 ,  G01S15/88 ,  Y10S56/15

    摘要： An agricultural harvesting machine (10) having a cutting element (22) movably supported thereon is provided with a height sensor (114) including a transmitter and a receiver mounted for movement with the cutting element. The transmitter (114) directs bursts of sound waves in the range of about 5KHz toward the ground and echoes of the bursts are picked up by the receiver, the elapsed time between transmission and reception being an indication of the height of the cutting element above the ground. To distinguish between echoes of the bursts and environmental noise picked up by the receiver, the bursts are encoded by transmitting them in pairs, the bursts of a pair being of fixed duration and separated by a fixed interval of time. The duration of each signal and the time spacing between signals is checked and if they are not of the correct duration or are not separated by the fixed interval of time they are rejected as noise. The time between transmission and reception of a burst is measured to provide an indication of the height of the cutting element. The measured height is compared with a reference or desired height and the difference value is used to control movement of the cutting element to the desired height. There is also enclosed an implement, such as a cutterbar (22) on an agricultural harvesting machine (10), which is automatically position-controlled to maintain a reference position relative to the ground surface. The implement (22) is mounted so that it may be raised, lowered or tilted and the control is such that tilting movements are preceded by, or are carried out concurrently with, a raising or lowering movement when one end of the implement is at the reference position and the other end is between the reference position and the ground surface. Manually operated UP and DOWN switches (332,336) not only control up and down movements of the implement but also inhibit and restore automatic control of implement positioning. A set/reset switch (340) enables manual selection of a predetermined reference position or the selection of the present implement position as the reference position.

    Contrast agent destruction effectiveness determination for medical diagnostic ultrasound imaging
    5.
    发明公开
    Contrast agent destruction effectiveness determination for medical diagnostic ultrasound imaging 审中-公开
    确定造影剂破坏效力的医疗诊断超声成像

    公开(公告)号：EP2082689A1

    公开(公告)日：2009-07-29

    申请号：EP08171688.8

    申请日：2008-12-15

    申请人： Siemens Medical Solutions USA, Inc.

    发明人： Guracar, Ismayil M

    IPC分类号： A61B8/00 ,  A61B8/06

    CPC分类号： A61B8/481 ,  A61B8/06 ,  A61B8/13 ,  G01S15/108

    摘要： The effectiveness of contrast agent destruction is determined (32). Locations of ineffectively destroyed contrast agents are identified (32). The response from undestroyed contrast agents may be distinguished (34, 36) from response from tissue due to saturation or from rapid perfusion. The locations may be highlighted (40) on resulting images, indicating (40) to the user locations not associated with perfusion. The user may make a diagnosis on perfusion rather than a lack of destruction of contrast agents.

    摘要翻译： 造影剂破坏的有效性确定性开采（32）。 无效地破坏造影剂的位置被识别（32）。 从未被破坏的造影剂的响应可以从组织由于饱和或从快速灌注的响应来区分（34，36）。 的位置也可以在所得的图象突出（40），指示（40），以不与灌注相关联的用户的位置。 用户可以做出灌注诊断，而不是缺乏造影剂的破坏。

    CONTRAST ENHANCEMENT BETWEEN LINEAR AND NONLINEAR SCATTERERS
    6.
    发明公开
    CONTRAST ENHANCEMENT BETWEEN LINEAR AND NONLINEAR SCATTERERS 审中-公开
    对比度改进的线性和非线性散射体

    公开(公告)号：EP1896871A1

    公开(公告)日：2008-03-12

    申请号：EP06755621.7

    申请日：2006-06-26

    申请人： UNIVERSITY OF SOUTHAMPTON

    发明人： LEIGHTON, Timothy, Grant ,  WHITE, Paul, Robert ,  FINFER, Daniel, Clark

    IPC分类号： G01S15/10 ,  G01S7/527

    CPC分类号： G01S7/521 ,  G01S7/292 ,  G01S7/487 ,  G01S7/527 ,  G01S13/106 ,  G01S15/108

    摘要： A method for creating an acoustic observation of a target volume, the method comprising the steps of transmitting a group of at least two acoustic pulses towards the target volume, receiving at least one detector an echo of the group scattered from the target volume, the echo having linear and nonlinear components, processing the scattered signal in such a way as to enhance at least part of the nonlinear component (and suppress the linear component) of the scattered signal in a signal P+, processing the scattered signal in such a way as to suppress at least part of the nonlinear component (and enhance the linear component) of the scattered signal in a signal P-, and producing a detection signal from a mathematical combination of the signals P+ and P-. The method can be used to suppress at least part of the non-linear component, and to enhance the linear component in order to improve the contrast of an image of an object located in water and surrounded by an oceanic bubble cloud, by utilising a ratio of signals P+ and P-. In other situations where bubbles are required to be enhanced in the image, such as in biomedical ultrasonics, the nonlinear component can be arranged to be enhanced, and the linear component suppressed, by utilising the ratio P-/P+.

    DETECTION APPARATUS, UNDERWATER DETECTION APPARATUS, RADAR APPARATUS, AND DETECTION METHOD
    7.
    发明公开
    DETECTION APPARATUS, UNDERWATER DETECTION APPARATUS, RADAR APPARATUS, AND DETECTION METHOD 审中-公开
    检测装置，水下检测装置，雷达装置和检测方法

    公开(公告)号：EP3153882A1

    公开(公告)日：2017-04-12

    申请号：EP15188493.9

    申请日：2015-10-06

    申请人： Furuno Electric Company Limited

    发明人： Shiraki, Rika

    IPC分类号： G01S15/96 ,  G01S15/10

    CPC分类号： G01S13/88 ,  G01S13/28 ,  G01S13/30 ,  G01S15/108 ,  G01S15/96

    摘要： This disclosure provides a detection apparatus (1, 1c, 1d, 1e) that includes a first echo intensity calculator (12, 12e) configured to calculate a first echo intensity of a first reception signal generated from a reception wave reflected on a reflection object, a second echo intensity calculator (13, 13e) configured to calculate a second echo intensity of a second reception signal generated from a reception wave reflected on said reflection object, a signal duration of said second reception signal being shorter than that of said first reception signal, and a target detector (20) configured to detect a target from a comparison of said first echo intensity and said second echo intensity.

    摘要翻译： 本公开提供了一种检测装置（1,1c，1d，1e），其包括：第一回波强度计算器（12,12e），其被配置为计算从在反射物体上反射的接收波产生的第一接收信号的第一回波强度; 第二回波强度计算部（13,13e），其计算由在所述反射物体上反射的接收波所生成的第二接收信号的第二回波强度，所述第二接收信号的信号周期比所述第一接收信号的信号周期短 以及目标检测器（20），被配置为根据所述第一回波强度和所述第二回波强度的比较来检测目标。

    A METHOD FOR NONLINEAR IMAGING OF ULTRASOUND CONTRAST AGENTS AT HIGH FREQUENCIES
    9.
    发明公开
    A METHOD FOR NONLINEAR IMAGING OF ULTRASOUND CONTRAST AGENTS AT HIGH FREQUENCIES 审中-公开
    PROCEDURE非线性成像超声造影剂在高速

    公开(公告)号：EP2419020A1

    公开(公告)日：2012-02-22

    申请号：EP10765347.9

    申请日：2010-04-19

    申请人： Visualsonics, Inc.

    发明人： NEEDLES, Andrew ,  MEHI, James, I. ,  HIRSON, Desmond

    IPC分类号： A61B8/00

    CPC分类号： G01S7/52038 ,  A61B8/06 ,  A61B8/13 ,  A61B8/14 ,  A61B8/481 ,  A61B8/543 ,  G01S7/52039 ,  G01S15/108 ,  G01S15/8956 ,  G01S15/8959

    摘要： This invention employs multiple ultrasound pulse firings of either alternating phase and/or amplitude to detect nonlinear fundamental and subharmonic signals from microbubble contrast agents within living tissue, at high frequencies (≧15 MHz), e.g., with a linear array transducer. It can be shown that the contrast-to-tissue ratio (CTR) decreases with increasing ultrasound frequency because of nonlinear ultrasound propagation in tissue. However, using the subharmonic signal in addition to the nonlinear fundamental harmonic component, rather than the conventional second harmonic used at lower frequencies, provides appreciable signal strength to overcome the limitations of nonlinear tissue propagation. Additionally, the method provides for the ability to switch, at some desired frequency above 20 MHz, into a purely alternating phase inversion acquisition, in combination with bandpass filtering of the subharmonic frequency band, minimizing the losses in CTR as the frequency increases. This maintains contrast sensitivity for more limited fields of view, as penetration depth will be limited at higher frequencies. Thus, within the same micro-ultrasound imaging system, many applications of microbubble detection can be achieved with a wide range of frequencies that covers both resolution and sensitivity requirements.