Ultrasonic Synthetic Transmit Focusing With a Multiline Beamformer
    22.
    发明申请
    Ultrasonic Synthetic Transmit Focusing With a Multiline Beamformer 有权
    超声波合成发射聚焦多束波束成形器

    公开(公告)号:US20090069692A1

    公开(公告)日:2009-03-12

    申请号:US12299629

    申请日:2007-04-17

    IPC分类号: A61B8/14

    摘要: An ultrasonic diagnostic imaging system produces an image with an extended focal range by transmitting a plurality of beams spaced along an array for multiline reception. The receive multilines of a plurality of transmit beams are spatially aligned and are combined with phase adjustment between the respective receive multilines to prevent undesired phase cancellation. The combined multilines produce the effect of an extended transmit focus so that an image produced using the combined multilines exhibits an extended focal range. To prevent motion artifacts the multiline order is adjustable as a function of image motion.

    摘要翻译: 超声波诊断成像系统通过发射沿阵列间隔开的多个光束来产生具有扩展焦距范围的图像,用于多线接收。 多个发送波束的接收多线性在空间上对准,并且与相应的接收多线之间的相位调整组合以防止不期望的相位消除。 组合的多行产生扩展的发送聚焦的效果,使得使用组合多线生成的图像展现出扩展的焦距范围。 为了防止运动伪影,多行顺序可以作为图像运动的函数进行调整。

    System of receiving signals with isofrequency retransmission
    24.
    发明申请
    System of receiving signals with isofrequency retransmission 有权
    用频率重传接收信号的系统

    公开(公告)号:US20060030258A1

    公开(公告)日:2006-02-09

    申请号:US10540644

    申请日:2003-12-18

    IPC分类号: H04H1/00 H04B7/08

    摘要: The present invention concerns a system of receiving signals comprising a retransmission base to amplify signals captured at a point in a domestic environment and retransmit them at the same frequency to digital receivers of the said domestic environment. According to the invention, the retransmission base amplifies and retransmits up to N DVB-T channels the positions of which can be anywhere in the receive band and are chosen dynamically by the system users. Means are provided in the system to share the system's amplification resources between the system's various digital receivers.

    摘要翻译: 本发明涉及一种接收包括重发基站的信号的系统,以放大在家庭环境中的一点捕获的信号,并将它们以相同的频率重传到所述家庭环境的数字接收机。 根据本发明,重发基站放大并发送多达N个DVB-T信道,它们的位置可以是接收频带中的任何地方,并由系统用户动态选择。 在系统中提供了在系统的各种数字接收机之间共享系统的放大资源的手段。

    Multi-frequency dielectric resonator oscillator
    26.
    发明授权
    Multi-frequency dielectric resonator oscillator 有权
    多频介质谐振器

    公开(公告)号:US06756855B2

    公开(公告)日:2004-06-29

    申请号:US10161894

    申请日:2002-06-04

    IPC分类号: H03B1110

    CPC分类号: H03B5/1876 H03B5/1864

    摘要: The invention provides a dielectric resonator oscillator DR, especially for transmission devices whose oscillating frequency may take several values. The oscillator uses two interfering conductors 30 and 31 switched so that they may or may not form a metal plane close to the dielectric resonator DR in order to vary the frequency of the oscillator while using a single resonator. The interfering conductors 30 and 31 are located in the cavity CAV close to the resonator DR and the switching means may or may not establish an electrical contact between the said interfering conductors 30 and 31.

    摘要翻译: 本发明提供一种介质谐振器DR,特别是用于其振荡频率可能取数值的传输装置。 振荡器使用两个干涉导体30和31被切换,使得它们可以形成或可以不形成靠近介质谐振器DR的金属平面,以便在使用单个谐振器的同时改变振荡器的频率。 干扰导体30和31位于靠近谐振器DR的腔CAV中,并且开关装置可以或可以不在所述干涉导体30和31之间建立电接触。

    Channel filter, in particular for a digital television receiver
    28.
    发明授权
    Channel filter, in particular for a digital television receiver 失效
    通道滤波器,特别是用于数字电视接收机

    公开(公告)号:US08390745B2

    公开(公告)日:2013-03-05

    申请号:US12452311

    申请日:2008-06-24

    IPC分类号: H04N5/50

    摘要: The channel filter includes at a least one basic bandpass filter centred on the frequency of the channel, in series with two cascade-connected reflective filters whose bandwidths are located either side of the basic bandpass filter encompassing the channels adjacent to the channel. A reflective filter can include a 90° directional coupler combined with a bandpass filter designed to ensure transfer matched to the load impedance of the coupler with the input of the bandpass filter connected to a directional coupler output port, the input of the directive filter being formed by input port of the coupler and the output of the directive filter being formed by a port recovering the bandpass filter reflection coefficient. The invention applies in particular to the implementation of the DVB-T and DVB-H standards aimed at receiving digital television programs from fixed or mobile multistandard terminals such as mobile telephones, PDAs or other multimedia receivers.

    摘要翻译: 信道滤波器包括以通道频率为中心的至少一个基本带通滤波器,与两个级联连接的反射滤波器串联,该滤波器的带宽位于包含与通道相邻的通道的基本带通滤波器的任一侧。 反射滤波器可以包括与带通滤波器组合的90°定向耦合器,其被设计成通过连接到定向耦合器输出端口的带通滤波器的输入来确保与耦合器的负载阻抗匹配的传输,形成指令滤波器的输入 通过耦合器的输入端口和由恢复带通滤波器反射系数的端口形成的指令滤波器的输出。 本发明特别适用于DVB-T和DVB-H标准的实现,该标准旨在从诸如移动电话,PDA或其他多媒体接收机的固定或移动多标准终端接收数字电视节目。

    METHOD OF RESENDING DIGITAL SIGNALS
    30.
    发明申请
    METHOD OF RESENDING DIGITAL SIGNALS 有权
    改写数字信号的方法

    公开(公告)号:US20120114071A1

    公开(公告)日:2012-05-10

    申请号:US13381229

    申请日:2009-06-30

    IPC分类号: H04L27/00

    摘要: The invention relates to a method of resending at least one digital signal, comprising a step of reception by cable of the signal comprising signaling information, a step of resending of this signal at a resend frequency by an antenna, and also comprising a step of selecting the resend frequency as a function of the signaling information; a step of transposing the signal into the selected frequency of the resend signal and a step of monitoring and adjusting the frequency of the resend signal as a function of the selected frequency of the resend signal.

    摘要翻译: 本发明涉及一种重新发送至少一个数字信号的方法,包括通过电缆接收包括信令信息的信号的步骤,以天线以再发送频率重新发送该信号的步骤,还包括选择 重发频率作为信令信息的函数; 将信号转置到重发信号的选定频率的步骤,以及根据重发信号的选定频率来监测和调整重发信号的频率的步骤。