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    • 121. 发明授权
    • Acoustic display system and method for ultrasonic imaging
    • 声像显示系统及超声波成像方法
    • US5622172A
    • 1997-04-22
    • US536509
    • 1995-09-29
    • Ming LiJin Kim
    • Ming LiJin Kim
    • A61B8/06G01S7/52G01S15/89A61B8/00
    • G01S7/52053A61B8/06G01S15/8979G01S7/5206
    • An ultrasonic imaging system has a three-dimensional acoustic display. Beam-formed ultrasound scan signals are separated into channel signals and are then filtered using head-related transfer function (HRTF) filters. An HRTF is associated with each of several points in an interrogation region. A filter coefficient processor selects, for each channel signal, a set of HRTF filter parameters according to which sample volume the channel signal comes from. Each HRTF parameter set defines left-ear and right-ear response functions to a calibration sound generated at a calibration point in a calibration space; the calibration point itself corresponds to a predetermined position in the interrogation region. The HRTF-filtered channel signals are then combined into left and right audio output signals which drive left and right speakers that the user listens to while performing the ultrasound scan. The calibration points in the calibration space are mapped to respective reference sample volumes located in a predetermined ultrasonic interrogation region.
    • 超声波成像系统具有三维声学显示。 波束形成的超声扫描信号被分离成通道信号,然后使用头相关传递函数(HRTF)滤波器进行滤波。 HRTF与询问区域中的几个点中的每一个相关联。 滤波器系数处理器根据信道信号来自哪个采样量,为每个信道信号选择一组HRTF滤波器参数。 每个HRTF参数集定义了在校准空间的校准点处产生的校准声音的左耳和右耳响应函数; 校准点本身对应于询问区域中的预定位置。 然后将HRTF滤波的信道信号组合成左和右音频输出信号,其驱动用户在执行超声扫描时听到的左和右扬声器。 校准空间中的校准点被映射到位于预定的超声询问区域中的各个参考样本体积。
    • 122. 发明授权
    • Partial beamforming
    • 部分波束成形
    • US5388079A
    • 1995-02-07
    • US38572
    • 1993-03-26
    • Jin KimLin X. YaoZoran BanjaninHiroshi FukukitaHisashi HagiwaraMasami Kawabuchi
    • Jin KimLin X. YaoZoran BanjaninHiroshi FukukitaHisashi HagiwaraMasami Kawabuchi
    • G01V1/00A61B8/00G01N29/06G01N29/44G01S7/523G01S15/89G10K11/34G01S15/00
    • G10K11/345
    • In accordance with the principles of the present invention, advantage is taken by the inventors of the fact that the speed of operation of the digital hardware in a digital beamformer can be reduced by providing, for example, multiple phases of the data signals and then processing the multi-phase data in N parallel summing paths. An interpolation-decimation filter receives the multi-phase data from the N parallel summing paths and provides at its output a signal having a reduced data rate (1/N). In accordance with this technique, the speed of operation of the individual digital circuits for forming the required beamforming delays is not increased as compared to conventional post-beamforming interpolation schemes, so that hereby the effective data rate is increased by a factor N and results in a decrease of the delay quantization error by a factor N. In accordance with the principles of the invention, the interpolation-decimation filter is incorporated into the beamformer at a most advantageous place. That is, it is incorporated into the beamformer processing after partial beamforming of a group of receive channels and before formation of the final beam. This approach allows the final beamforming to be simple and performed at a relatively low data rate and allows the higher rate signal processing to be confined to circuitry which may advantageously be on a single type of integrated circuit which is repetitively used in the beamformer.
    • 根据本发明的原理,发明人的优点是可以通过提供例如数据信号的多个相位然后处理来减少数字波束形成器中的数字硬件的操作速度 N个并行求和路径中的多相数据。 插值抽取滤波器从N个并行求和路径接收多相数据,并在其输出端提供具有降低的数据速率(1 / N)的信号。 根据这种技术,与传统的后波束成形插值方案相比,用于形成所需波束成形延迟的各个数字电路的操作速度没有增加,因此有效数据速率增加了因子N,并导致 延迟量化误差减小因子N.根据本发明的原理,内插抽取滤波器在最有利的地方并入波束形成器中。 也就是说,它在一组接收通道的部分波束形成之后并且在形成最终波束之前被并入到波束形成器处理中。 这种方法允许最终的波束成形简单并且以相对较低的数据速率执行,并且允许较高速率的信号处理被限制在有利地可以在波束形成器中重复使用的单一类型的集成电路上的电路。
    • 129. 发明申请
    • Communicating Media Data
    • 沟通媒体数据
    • US20130179507A1
    • 2013-07-11
    • US13555445
    • 2012-07-23
    • Don WilliamsJin KimKaido KertMatthew Hungerford
    • Don WilliamsJin KimKaido KertMatthew Hungerford
    • G06F15/16
    • H04L65/4007H04L63/08H04L63/0815H04L65/1069H04L65/602H04L67/141H04L67/148
    • Method and communication system for communicating media data, wherein a call is implemented over the communication system between a first user terminal associated with a first user and a second user terminal associated with a second user. Whilst the call is implemented, a separate media sharing session is established over the communication system between the first and second user terminals, wherein the media sharing session is authenticated on the basis of the call being implemented between the first and second user terminals when the media sharing session is established. Media data is communicated in the media sharing session, under the control of the first user, from the first user terminal to the second user terminal, the communicated media data being for output to the second user at the second user terminal in the media sharing session.
    • 用于传送媒体数据的方法和通信系统,其中在与第一用户相关联的第一用户终端和与第二用户相关联的第二用户终端之间的通信系统上实现呼叫。 在执行呼叫的同时,在第一和第二用户终端之间的通信系统上建立单独的媒体共享会话,其中基于在第一和第二用户终端之间实施的呼叫来认证媒体共享会话,当媒体 共享会议建立。 媒体数据在第一用户的控制下在媒体共享会话中从第一用户终端传送到第二用户终端,所传送的媒体数据用于在媒体共享会话中的第二用户终端处输出给第二用户 。