Vector doppler medical devices for blood velocity studies
    1.
    发明授权
    Vector doppler medical devices for blood velocity studies 失效
    用于血液速度研究的矢量多普勒医疗装置

    公开(公告)号:US5409010A

    公开(公告)日:1995-04-25

    申请号:US885803

    申请日:1992-05-19

    IPC分类号: A61B8/06 G01P5/24 G01S15/58

    摘要: An ultrasonic pulse-echo medical device for determining the angular heading and magnitude of the velocity of blood flowing through a blood vessel by transmitting a pulsed ultrasonic beam from a single transmitting transducer and receiving echoes from sample volumes along such beam by a plurality of ultrasound receiving transducers. Independent motions in the same sample volume, such as those of a moving vessel wall and the motion of blood flowing through the blood vessel, can be separately analyzed and displayed.

    摘要翻译: 一种超声波脉冲回波医疗装置,用于通过从单个发射换能器发送脉冲超声波束来确定流过血管的血液的速度的角度方向和幅度,并通过多个超声波接收从该光束接收来自样本体积的回波 传感器。 可以单独分析和显示相同样本体积中的独立运动,例如移动血管壁的运动和血液流过血管的运动。

    Coin-discriminator voucher anti-counterfeiting method and apparatus
    3.
    发明授权
    Coin-discriminator voucher anti-counterfeiting method and apparatus 有权
    硬币鉴别器凭证防伪方法及装置

    公开(公告)号:US07931304B2

    公开(公告)日:2011-04-26

    申请号:US12235574

    申请日:2008-09-22

    摘要: Vouchers and methods for providing vouchers configured to assist in distinguishing unauthorized duplicate or counterfeit vouchers are disclosed herein. In one embodiment, a voucher can include a substrate, a first indicia on the substrate, and a thermally responsive second indicia on the substrate. At least one of the first indicia and the second indicia can indicate a value of the voucher. A system which assists in detecting alteration of value documents or transmissions, such as a coin counter voucher is provided. Voucher information such as the voucher value is included in the voucher in an encrypted or otherwise modified form. When the voucher is presented for redemptions, the encrypted information is decrypted and compared to independently available voucher information. Failure of the information to match indicates that the voucher has been altered or should otherwise be further checked.

    摘要翻译: 本文公开了用于提供被配置为协助区分未经授权的重复或伪造凭证的凭证的凭证和方法。 在一个实施例中,凭单可以包括衬底,衬底上的第一标记和衬底上的热响应的第二标记。 第一标记和第二标记中的至少一个可以指示凭证的值。 提供了一种有助于检测价值文件或传输变更的系统,例如硬币计数器凭证。 优惠券信息(如凭证值)以加密或其他方式修改的形式包含在凭证中。 当凭证被提供用于兑换时,加密的信息被解密并且与独立可用的凭证信息进行比较。 信息匹配失败表示凭证已被更改或应进一步检查。

    Transcutaneous localization of arterial bleeding by two-dimensional ultrasonic imaging of tissue vibrations
    4.
    发明授权
    Transcutaneous localization of arterial bleeding by two-dimensional ultrasonic imaging of tissue vibrations 失效
    通过二维超声成像对组织振动的动脉出血经皮定位

    公开(公告)号:US07803116B2

    公开(公告)日:2010-09-28

    申请号:US10574133

    申请日:2004-10-01

    IPC分类号: A61B8/14

    摘要: An ultrasound based technique for detecting and imaging vibrations in tissue caused by eddies produced during bleeding through punctured arteries or from organs. A clutter signal, normally suppressed in conventional color flow imaging, is employed to detect and characterize local tissue vibrations, to detect internal bleeding in an image, or as an audible or palpable signal, or a readout. Using a tissue vibration image, the origin and extent of vibrations relative to the underlying anatomy and blood flow can be visualized in real time, enabling measurements of vibration amplitude, frequency, and spatial distribution. Bleeding rate can be determined from the frequency and amplitude of the vibrations. Signal processing algorithms usable to identify tissue vibrations from an ensemble of 2D ultrasound data include those based on phase decomposition, spectral estimation using eigendecomposition, and spectral estimation using autoregressive modeling for isolating vibrations from clutter, blood flow, and noise.

    摘要翻译: 一种基于超声的技术,用于检测和成像由穿刺的动脉或器官出血期间产生的涡流引起的组织中的振动。 通常在常规彩色流动成像中抑制的杂波信号被用于检测和表征局部组织振动,以检测图像中的内部出血,或者作为可听或触觉的信号或读出。 使用组织振动图像,可以实时显示相对于底层解剖和血流的振动的起点和程度,可以测量振幅,频率和空间分布。 出血率可以根据振动的频率和振幅来确定。 用于识别来自2D超声数据的组合的组织振动的信号处理算法包括基于相位分解,使用特征分解的频谱估计和使用自回归建模的频谱估计来分离来自杂波,血流和噪声的振动的信号处理算法。

    Ultrasonic technique for assessing wall vibrations in stenosed blood vessels

    公开(公告)号:US20060079782A1

    公开(公告)日:2006-04-13

    申请号:US11218292

    申请日:2005-08-31

    IPC分类号: A61B8/02

    摘要: A real-time signal processing technique for ultrasonic imaging of tissue vibrations for localizing the source of a bruit in a 2D image with respect to the anatomy and/or for obtaining simultaneous information about vibrations and the underlying blood flow. The bruit can be quantitatively assessed using an ensemble of ultrasound echoes. Signal processing enables estimation of wall displacement and the display of time-resolved vibration spectrum. Vibrations are detected and color-coded according to their amplitude and frequency and overlaid on the B-mode and/or color-flow image in real time. Proposed vibration imaging algorithms use data acquired during conventional ultrasonic color-flow imaging and the clutter signal, normally suppressed in color-flow imaging, to detect and characterize tissue vibrations. Three vibration imaging algorithms based on parametric modeling of vibrations and other criteria distinguish between clutter, blood flow, and vibrations. The techniques are usable to detect, locate, image, and quantitatively grade stenoses in blood vessels.

    Display system for a head mounted viewing transparency
    6.
    发明授权
    Display system for a head mounted viewing transparency 失效
    用于头戴式观看透明度的显示系统

    公开(公告)号:US5162828A

    公开(公告)日:1992-11-10

    申请号:US345886

    申请日:1989-05-01

    摘要: A display system for conventional eyewear having a transparency that defines a field of view and a frame for supporting the transparency on a user's head is shown. The display system includes a light transmissive display mounted on the frame of the eyewear and optics for collimating light to project an image of the displayed information at a distance from the user in the periphery of the field of view defined by the transparency. The optics may include a single mirror that receives the information directly from the display wherein the mirror is toroidal or the like so as to project an enlarged image at an apparent optical distance from the user that is greater than the actual optical path. Alternatively, a planar mirror may be employed with a collimating lens to project the image at a desired distance from the user. The mirror may be fully reflective or partially reflective so as to superimpose the image of the displayed information on the scene viewed by the user through the transparency of the eyewear. Further, means are provided for automatically adjusting the optical path defined by the relative position of the mirror, the display and the user's eye to accommodate heads of various sizes.

    摘要翻译: 示出了用于常规眼镜的显示系统,其具有限定视场的透明度和用于在用户头部上支撑透明度的框架。 显示系统包括安装在眼镜的框架上的透光显示器和用于准直光的光透射显示器,以在由透明度限定的视野的周边距离用户投射所显示的信息的图像。 光学元件可以包括直接从显示器接收信息的单个反射镜,其中反射镜是环形等,以便以比实际光路大的用户的视在光学距离投影放大的图像。 或者,平面镜可以与准直透镜一起使用以将图像投射到距离用户所需的距离处。 反射镜可以是完全反射的或部分反射的,以便将所显示的信息的图像叠加在用户通过眼镜的透明度观看的场景上。 此外,提供了用于自动调整由镜子,显示器和用户眼睛的相对位置限定的光路以适应各种尺寸的头部的装置。

    COIN DISCRIMINATOR VOUCHER ANTI-COUNTERFEITING METHOD AND APPARATUS
    9.
    发明申请
    COIN DISCRIMINATOR VOUCHER ANTI-COUNTERFEITING METHOD AND APPARATUS 有权
    硬币识别器防伪防伪方法和装置

    公开(公告)号:US20090096205A1

    公开(公告)日:2009-04-16

    申请号:US12235574

    申请日:2008-09-22

    IPC分类号: B42D15/00

    摘要: Vouchers and methods for providing vouchers configured to assist in distinguishing unauthorized duplicate or counterfeit vouchers are disclosed herein. In one embodiment, a voucher can include a substrate, a first indicia on the substrate, and a thermally responsive second indicia on the substrate. At least one of the first indicia and the second indicia can indicate a value of the voucher. A system which assists in detecting alteration of value documents or transmissions, such as a coin counter voucher is provided. Voucher information such as the voucher value is included in the voucher in an encrypted or otherwise modified form. When the voucher is presented for redemptions, the encrypted information is decrypted and compared to independently available voucher information. Failure of the information to match indicates that the voucher has been altered or should otherwise be further checked.

    摘要翻译: 本文公开了用于提供被配置为协助区分未经授权的重复或伪造凭证的凭证的凭证和方法。 在一个实施例中,凭单可以包括衬底,衬底上的第一标记和衬底上的热响应第二标记。 第一标记和第二标记中的至少一个可以指示凭证的值。 提供了一种有助于检测价值文件或传输变更的系统,例如硬币计数器凭证。 优惠券信息(如凭证值)以加密或其他方式修改的形式包含在凭证中。 当凭证被提供用于兑换时,加密的信息被解密并且与独立可用的凭证信息进行比较。 信息匹配失败表示凭证已被更改或应进一步检查。

    System for voucher or token verification
    10.
    发明授权
    System for voucher or token verification 有权
    凭证或令牌验证系统

    公开(公告)号:US07113929B1

    公开(公告)日:2006-09-26

    申请号:US09662414

    申请日:2000-09-14

    IPC分类号: G06F17/60 H04K1/00 H04L9/00

    摘要: The present invention allows verification of a voucher or token prior to redemption. The voucher or token has a code associated therewith so that a value of the voucher or token may be stored in a database. Later when the voucher or token is presented to a cashier for redemption, the code is submitted to the database in order to retrieve the value associated with that voucher or token. In this way, the voucher or token is verified before redemption. In one embodiment, a verification system includes a voucher or token database, a recognition subsystem and two transceivers. The database knows the code and value associated with the voucher or token. A recognition subsystem reads the code from the voucher or token. The transceivers couple together the database and the recognition subsystem in such a way that the a query can be made by the recognition system to determine the value associated with the code or otherwise verify the validity of the voucher or token.

    摘要翻译: 本发明允许在兑换之前验证凭证或令牌。 凭证或令牌具有与之相关联的代码,使得凭证或令牌的值可以存储在数据库中。 稍后当凭证或令牌被提交给收银员进行兑换时,代码将被提交到数据库,以便检索与该凭证或令牌相关联的值。 以这种方式,兑换券或令牌将在兑换前进行验证。 在一个实施例中,验证系统包括凭证或令牌数据库,识别子系统和两个收发器。 数据库知道与凭证或令牌相关联的代码和值。 识别子系统从凭证或令牌读取代码。 收发器将数据库和识别子系统结合在一起,使得识别系统可以进行查询以确定与代码相关联的值或以其他方式验证凭证或令牌的有效性。