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    Touchless interaction using audio components
    4.
    发明授权
    Touchless interaction using audio components 有权

    公开(公告)号：US11543921B2

    公开(公告)日：2023-01-03

    申请号：US17436203

    申请日：2020-03-05

    申请人： Elliptic Laboratories AS

    发明人： Espen Klovning ,  John Magne Helgesen Røe ,  Thomas Kristoffersen Børstad

    IPC分类号： G06F3/043 ,  G01S7/534 ,  G10K11/18 ,  G10K15/00

    摘要： The present teachings relate to an electronic device comprising: a first module for generating an audio signal; a second module for generating an ultrasonic signal; a mixer for generating a combined signal; a transmitter for outputting an acoustic signal dependent upon the combined signal; and, a processing means for controlling the ultrasonic signal; wherein, in response to receiving a first instruction signal for initiating the ultrasonic signal, the processing means is configured to increase the amount of the ultrasonic signal in the combined signal from an essentially zero value to a predetermined value over a predetermined enable time-period. The present teachings also relate to an electronic device configured to decrease the amount of the ultrasonic signal in the combined signal from an essentially zero value to a predetermined value over a predetermined disable time-period, and to an electronic device configured to remove the audio signal from the combined signal whilst preventing pop-noise, and to an electronic device capable of replacing the ultrasonic signal whilst minimizing the processing time. The present teachings further relate to a method for reducing the occurrence of pop noise in an acoustic signal associated with: initiating the ultrasonic signal in the combined signal, terminating the ultrasonic signal in the combined signal, terminating the audio signal in the combined signal, and replacing the ultrasonic signal in the combined signal. The present teachings also relate to a computer software product for implementing any of the method steps disclosed herein, and to a computer storage medium storing the computer software herein disclosed.

    Ultrasound scanner for tissue characterization
    8.
    发明授权
    Ultrasound scanner for tissue characterization 失效
    用于组织表征的超声扫描仪

    公开(公告)号：US4658827A

    公开(公告)日：1987-04-21

    申请号：US740178

    申请日：1985-05-31

    申请人： Ping He ,  James F. Greenleaf

    发明人： Ping He ,  James F. Greenleaf

    IPC分类号： G01S7/52 ,  G01S7/534 ,  A61B10/00

    CPC分类号： G01S7/52026 ,  G01S7/52033 ,  G01S7/52036

    摘要： Both the linear attenuation coefficient and an index describing the heterogeneity of the scatterers of tissue can be obtained simultaneously by the method and system disclosed herein. The system also produces a B-scan image with optimal time-variable gain compensation. The system combines an envelope peak method with a conventional ultrasound pulse-echo scanner. In this method, the peaks of the echo envelopes in a B-scan are multiplied by a controllable gain function. By adjusting the parameter of the gain function, the noise-to-signal ratio (NSR) of the envelope peaks is minimized. The minimum NSR can be used as an index to describe the heterogeneity of the tissue scatterers and the parameter of the gain function corresponding to the minimum NSR is equal to the attenuation coefficient of the tissue.

    摘要翻译： 可以通过本文公开的方法和系统同时获得线性衰减系数和描述组织散射体的异质性的指标。 该系统还产生具有最佳时变增益补偿的B扫描图像。 该系统将包络峰值方法与传统的超声脉冲回波扫描仪相结合。 在该方法中，B扫描中的回波包络的峰值乘以可控增益函数。 通过调整增益函数的参数，使包络峰值的噪声信噪比（NSR）最小化。 最小NSR可用作描述组织散射体的异质性的指标，并且与最小NSR对应的增益函数的参数等于组织的衰减系数。

    Moving window sonar display system
    9.
    发明授权
    Moving window sonar display system 失效
    移动窗口声纳显示系统

    公开(公告)号：US3914730A

    公开(公告)日：1975-10-21

    申请号：US45231674

    申请日：1974-03-18

    申请人： WESTINGHOUSE ELECTRIC CORP

    发明人： JONES CHARLES H ,  WOLFE PETER N

    IPC分类号： G01S7/534 ,  G01S9/66 ,  G01S7/62

    CPC分类号： G01S7/534 ,  Y10S367/90

    摘要： The invention provides a sonar system having a moving window display of the sonified area in which a single broad beam projecting transducer is employed to sonify a desired area. A plurality of line focus receiving transducers are used to receive signals from adjacent strips of the sonified area, and the signals received from each transducer are amplified, detected and sampled. A sampling switch is employed to sequentially sample each detector channel RE times, where RE represents the number of range elements. The sampled signals are then stored in a magnetic storage device, preferably a magnetic disc. The signals from a single sonar pulse are stored in groups, equal in number to the number of receiving transducers, at nonadjacent locations on the disc track, and the signals corresponding to equal range elements from previous and subsequent pulses are stored at adjacent locations in the order received. The disc rotates 360* + OR phi during one picture interval to provide the moving picture display on a cathode ray tube electrically connected to a read head on the magnetic storage means.

    摘要翻译： 本发明提供了一种声纳系统，其具有超声波区域的移动窗口显示器，其中使用单个宽射束投影换能器来超声波所需区域。 使用多个线路聚焦接收换能器来接收来自超声波区域的相邻条带的信号，并且从每个换能器接收的信号被放大，检测和采样。 使用采样开关来顺序地对每个检测器通道RE进行采样，其中RE表示范围元件的数量。 然后将采样的信号存储在磁存储装置中，优选地存储在磁盘中。 来自单个声纳脉冲的信号在盘轨道上的非相邻位置处以与接收换能器数目相等的数量存储，并且对应于来自先前和后续脉冲的相等范围元件的信号被存储在 收到订单。 在一个图像间隔期间，光盘旋转360度+/- phi，以在与磁存储装置上的读取头电连接的阴极射线管上提供运动图像显示。