Microfabricated acoustic transducer with a multilayer electrode
    1.
    发明授权
    Microfabricated acoustic transducer with a multilayer electrode 有权
    具有多层电极的微型声学换能器

    公开(公告)号:US07839722B2

    公开(公告)日:2010-11-23

    申请号:US11903329

    申请日:2007-09-20

    Abstract: In a capacitive membrane ultrasound transducer, one or more electrodes include multiple layers of conductive or semiconductive material. The layers may be positioned adjacent an insulator or cavity in an arrangement to reduce electrical degradation. For example, a conductive layer with less work function and less resistivity is spaced from an insulator by a conductive layer with more work function and more resistivity. The different layers of electrode material may provide for less electrical degradation due to the type of material used and relative location.

    Abstract translation: 在电容膜超声换能器中,一个或多个电极包括多层导电或半导体材料。 层可以在布置中邻近绝缘体或空腔定位以减少电气劣化。 例如,具有较小功函数和较小电阻率的导电层通过具有更多功函数和更大电阻率的导电层与绝缘体隔开。 电极材料的不同层可以由于所用材料的类型和相对位置而提供更少的电气降解。

    Aperture synthesis using cMUTs
    2.
    发明申请
    Aperture synthesis using cMUTs 有权
    使用cMUT进行孔径合成

    公开(公告)号:US20090079299A1

    公开(公告)日:2009-03-26

    申请号:US11904454

    申请日:2007-09-26

    Abstract: An ultrasound imaging system may use a capacitive membrane or electrostrictive ultrasound transducer to realize isotropic volumetric imaging with bias-line element selection and a variety of aperture synthesis techniques. Two dimensional beam formation may be performed by using a beamformer to focus along one dimension, and then perform a second round of “off-line” or “retrospective” beam formation along the other direction.

    Abstract translation: 超声成像系统可以使用电容膜或电致伸缩超声换能器来实现具有偏置线元件选择和各种孔合成技术的各向同性体积成像。 可以通过使用波束形成器沿着一个维度聚焦来执行二维波束形成,然后沿着另一个方向执行第二轮“离线”或“回溯”波束形成。

    Aperture synthesis using cMUTs
    3.
    发明授权
    Aperture synthesis using cMUTs 有权
    使用cMUT进行孔径合成

    公开(公告)号:US08641628B2

    公开(公告)日:2014-02-04

    申请号:US11904454

    申请日:2007-09-26

    Abstract: An ultrasound imaging system may use a capacitive membrane or electrostrictive ultrasound transducer to realize isotropic volumetric imaging with bias-line element selection and a variety of aperture synthesis techniques. Two dimensional beam formation may be performed by using a beamformer to focus along one dimension, and then perform a second round of “off-line” or “retrospective” beam formation along the other direction.

    Abstract translation: 超声成像系统可以使用电容膜或电致伸缩超声换能器来实现具有偏置线元件选择和各种孔合成技术的各向同性体积成像。 可以通过使用波束形成器沿着一个维度聚焦来执行二维波束形成,然后沿着另一个方向执行第二轮“离线”或“回溯”波束形成。

    One-piece photograph display assembly and methods of use
    4.
    发明授权
    One-piece photograph display assembly and methods of use 失效
    一体式照片显示组件及使用方法

    公开(公告)号:US08074385B2

    公开(公告)日:2011-12-13

    申请号:US12911953

    申请日:2010-10-26

    Applicant: Paul A. Wagner

    Inventor: Paul A. Wagner

    CPC classification number: A47G1/141 G09F1/10 G09F1/14

    Abstract: A light-weight display easel assembly for use with photographs and photographic greeting cards is described, wherein the display device is a substantially planar sheet or panel of paperboard or similar cellulose-containing material having a plurality of die-cut flaps thereon, each of the die-cut flaps having one scored edge which allows for the outward folding of the flap. The display easel further comprises a plurality of adhesive strips on the front face of the paperboard, for attachment of a photograph or photographic greeting card thereto. The display easel, once assembled, is lightweight enough such that it can be mailed without the need for excess postage fees. Additionally, due to the attachment of the display easel to substantially the entire back face of a photograph, the entire photograph is fully supported and is therefore resistant to creases, indentations, warping, and other damages which can occur during the mailing process.

    Abstract translation: 描述了一种用于照片和摄影贺卡的重量轻的显示画架组件,其中显示装置是其上具有多个模切折翼的纸板或类似的含纤维素材料的基本上平面的片材或面板, 具有一个划痕边缘的模切翼片允许翼片向外折叠。 展示架还包括在纸板的前表面上的多个粘合带,用于将照片或照相贺卡附加到其上。 展示架一旦组装,就足够轻便,可以邮寄,而不需要额外的邮费。 另外,由于显示画架大体上附着在照片的整个背面上,所以整个照片被完全支撑,因此抵抗在邮寄过程中可能发生的折痕,凹痕,翘曲和其他损坏。

    Method and apparatus for improving the performance of capacitive acoustic transducers using bias polarity control and multiple firings
    5.
    发明授权
    Method and apparatus for improving the performance of capacitive acoustic transducers using bias polarity control and multiple firings 有权
    用于改善使用偏置极性控制和多次发射的电容式声换能器的性能的方法和装置

    公开(公告)号:US07780597B2

    公开(公告)日:2010-08-24

    申请号:US10819094

    申请日:2004-04-05

    Abstract: Presented is a method of operating a capacitive microfabricated ultrasonic transducer (cMUT) array with multiple firings of varying bias voltage polarity patterns to improve its performance in imaging non-linear media, such as in contrast agent imaging or tissue harmonic imaging. Additionally, transducers incorporating the method are provided. The method of cMUT operation and the corresponding cMUT does not require pre-distortion or phase inversion of the transmit signal and can achieve an improvement in the elevation focus of the cMUT, as compared to the elevation focus that a single firing can achieve. Further, the method of operating the cMUT minimizes the deleterious effects that result from insulators being subjected to high electric fields.

    Abstract translation: 提出了一种操作具有改变的偏置电压极性图案的多次发射的电容微型超声波换能器(cMUT)阵列的方法,以提高其在成像非线性介质中的性能,例如对比剂成像或组织谐波成像。 另外,提供了包含该方法的换能器。 与单次点火可以实现的高程焦点相比,cMUT操作的方法和相应的cMUT不需要发射信号的预失真或相位反转,并且可以实现cMUT的高程焦点的改善。 此外,操作cMUT的方法使由绝缘子经受高电场导致的有害影响最小化。

    Electric circuit for tuning a capacitive electrostatic transducer
    6.
    发明授权
    Electric circuit for tuning a capacitive electrostatic transducer 有权
    用于调谐电容式静电传感器的电路

    公开(公告)号:US07670290B2

    公开(公告)日:2010-03-02

    申请号:US10803808

    申请日:2004-03-17

    CPC classification number: B06B1/0292 A61B8/4483 G01S7/52079

    Abstract: An electrostatic transducer circuit and method of tuning the same, in which a balancing circuit is inserted into the electrostatic transducer circuit, is described. The electrostatic transducer circuit generally includes transmit circuitry, receive circuitry, a capacitive electrostatic transducer and the balancing circuit. The balancing circuit can include, either singly or in combination, an inductance and a negative capacitance. The balancing inductance is tuned to counteract the negative reactance of the capacitive electrostatic transducer at a desired operating frequency and can be inserted into the transmit circuitry and/or the receive circuitry. The balancing negative capacitance is tuned to counteract the capacitance of the capacitive electrostatic transducer and can be inserted into the receive circuitry and/or the transmit circuitry. The transmit circuitry can be isolated from the receive circuitry, and vice versa, once the balancing circuit has been inserted. Isolation can be achieved by switching the electrostatic transducer circuit between transmit and receive modes of operation, or by providing separate transmit and receive electrode subsets.

    Abstract translation: 描述了一种静电换能器电路及其调谐方法,其中平衡电路插入到静电换能器电路中。 静电换能器电路通常包括发射电路,接收电路,电容式静电变换器和平衡电路。 平衡电路可以单独地或组合地包括电感和负电容。 调整平衡电感以抵消在期望的工作频率下的电容式静电换能器的负电抗并且可以插入到发射电路和/或接收电路中。 调整平衡负电容以抵消电容式静电变换器的电容,并可将其插入接收电路和/或发射电路。 一旦平衡电路被插入,发射电路可以与接收电路隔离,反之亦然。 可以通过在发射和接收工作模式之间切换静电转换器电路,或通过提供单独的发射和接收电极子集来实现隔离。

    Piezoelectric and CMUT layered ultrasound transducer array
    7.
    发明申请
    Piezoelectric and CMUT layered ultrasound transducer array 有权
    压电和CMUT分层超声换能器阵列

    公开(公告)号:US20090069686A1

    公开(公告)日:2009-03-12

    申请号:US11900561

    申请日:2007-09-11

    CPC classification number: B06B1/0292 B06B1/064 G01S7/5208

    Abstract: A CMUT or other semiconductor-based transducer is stacked with a piezoelectric transducer (PZT). The CMUT is sufficiently thin to avoid or limit interference with sound propagation through the CMUT from or to the PZT or crosstalk between transmitter elements. The PZT/CMUT layered structure is used as a matrix array, such as an array with a multi-dimensional arrangement of elements. The CMUT array is formed and thinned using semiconductor processing. The PZT transmits acoustic energy through the thin CMUT. The CMUT receives responsive echoes. Using integrated electronics in the thin wafer of the CMUT limits interconnection problems for the matrix receive array.

    Abstract translation: CMUT或其他基于半导体的传感器与压电换能器(PZT)堆叠。 CMUT足够薄以避免或限制通过CMUT从PZT发送的声音传播或发射机元件之间的串扰的干扰。 PZT / CMUT分层结构用作矩阵阵列,例如具有多维排列元素的阵列。 使用半导体处理形成和减薄CMUT阵列。 PZT通过薄CMUT传输声能。 CMUT接收响应回波。 在CMUT的薄晶片中使用集成电子元件限制了矩阵接收阵列的互连问题。

    Temporally aligned exposure bracketing for high dynamic range imaging

    公开(公告)号:US10511785B2

    公开(公告)日:2019-12-17

    申请号:US14514077

    申请日:2014-10-14

    Applicant: Paul A Wagner

    Inventor: Paul A Wagner

    Abstract: Apparatus and methods are provided to create high dynamic range images by passing an incoming image through a color-neutral separation prism having at least three channels to produce a corresponding number of full color fractionated images, each channel aligned with a corresponding image capturing device for which an ISO sensitivity is selected to simultaneously achieve a different exposure value for each fractionated image and image capturing device, referred to as exposure bracketing, and recombining the simultaneously collected fractionated images to create a high dynamic range image. The apparatus and methods may be used for still photography or motion pictures.

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