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118 条记录 (耗时 0.046 秒)

    Radio frequency front end for television band receiver and spectrum sensor
    11.
    发明授权
    Radio frequency front end for television band receiver and spectrum sensor 有权
    射频前端用于电视频段接收机和频谱传感器

    公开(公告)号：US08350970B2

    公开(公告)日：2013-01-08

    申请号：US12571153

    申请日：2009-09-30

    申请人： Neil Birkett ,  Shiquan Wu

    发明人： Neil Birkett ,  Shiquan Wu

    IPC分类号： H04N5/50 ,  H04N17/02 ,  H04B1/18 ,  H04B1/04 ,  G06F3/033

    CPC分类号： H04H40/18 ,  H04B1/0064 ,  H04H2201/60 ,  H04L25/0278 ,  H04N21/4263 ,  H04N21/6112

    摘要： A radio frequency front end for a television band receiver and spectrum sensor includes a first plurality of adaptive matching networks connected to a signal summer that combines signals received by the first plurality of antennas respectively connected to the first plurality of adaptive matching networks and outputs a combined signal to each of a second plurality of downconverter/tuners. The downconverter/tuners are respectively or collectively connected to an analog to digital converter that converts output of the second plurality of downconverter/tuners into at least one digital signal that is output to the television band receiver and spectrum sensor.

    摘要翻译： 用于电视频带接收机和频谱传感器的射频前端包括连接到信号加法器的第一多个自适应匹配网络，其组合由分别连接到第一多个自适应匹配网络的第一多个天线接收的信号，并输出组合 信号到第二多个下变频器/调谐器中的每一个。 下变频器/调谐器分别或共同地连接到模数转换器，其将第二多个下变频器/调谐器的输出转换成输出到电视频带接收机和频谱传感器的至少一个数字信号。

    Perturbation antenna system and apparatus for wireless terminals
    13.
    发明申请
    Perturbation antenna system and apparatus for wireless terminals 审中-公开
    无线终端的扰动天线系统和装置

    公开(公告)号：US20120052821A1

    公开(公告)日：2012-03-01

    申请号：US13137465

    申请日：2011-08-18

    申请人： Dongxun Jia ,  Shiquan Wu

    发明人： Dongxun Jia ,  Shiquan Wu

    IPC分类号： H04B1/38

    CPC分类号： H04B1/126 ,  H04B7/0825 ,  H04B7/0828 ,  H04B7/0857

    摘要： This is invention discloses a perturbation antenna system for wireless communication terminals such mobile handsets, mobile embedded laptops, mobile CPEs (Customer premises equipment), nomadic wireless CPEs, fixed wireless terminals and etc. The perturbation antenna output is analogically combined with that of the primary antenna. The combined result is to re-create the antenna pattern shape and its direction pointing in order to achieve gains by user intercept. A variable delay circuitry is equipped to the perturbation antenna therefore the user's interception can be enforced via programmable apparatus either by manually or by digital inputs. The user can tune the delay parameters meanwhile observe the antenna pattern changes and the call quality until satisfaction.

    摘要翻译： 本发明公开了一种用于诸如移动手机，移动嵌入式笔记本电脑，移动CPE（客户驻地设备），游牧无线CPE，固定无线终端等的无线通信终端的扰动天线系统。扰动天线输出与主要天线输出类似地组合 天线。 组合的结果是重新创建天线图案形状及其方向指向，以便通过用户截取实现增益。 可变延迟电路被配置到扰动天线，因此可以通过手动或数字输入通过可编程设备实施用户的截取。 用户可以调整延迟参数，同时观察天线方向的变化和通话质量，直到满意。

    System and Method For Protecting Transmissions of Wireless Microphones Operating in Television Band White Space
    14.
    发明申请
    System and Method For Protecting Transmissions of Wireless Microphones Operating in Television Band White Space 有权
    用于保护在电视频带空白中操作的无线麦克风的传输的系统和方法

    公开(公告)号：US20110280413A1

    公开(公告)日：2011-11-17

    申请号：US12779782

    申请日：2010-05-13

    申请人： Shiquan Wu ,  Vajira Samarasooriya

    发明人： Shiquan Wu ,  Vajira Samarasooriya

    IPC分类号： H04B3/00 ,  H04N5/50 ,  H04N7/01

    CPC分类号： H04N17/004 ,  H03J1/0091 ,  H04B1/76 ,  H04H60/41 ,  H04H60/43 ,  H04N5/50

    摘要： A wireless microphone system broadcasts a pilot tone at the designated ATSC pilot position in the TV Band channel being used by the wireless microphone system. The pilot tone is a readily detectable waveform transmitted in the ATSC pilot position. The pilot tone can be generated by any one of: a standalone pilot tone generator; a pilot tone generator incorporated into a wireless microphone receiver; or, a pilot tone generator incorporated into a wireless microphone.

    摘要翻译： 无线麦克风系统在由无线麦克风系统使用的TV频道信道中的指定ATSC导频位置广播导频音。 导频音是在ATSC导频位置发送的易于检测的波形。 导频音可以由以下任何一种产生：独立导频音发生器; 并入无线麦克风接收机的导频音发生器; 或者组合到无线麦克风中的导频音发生器。

    Systems and methods for distributing GPS clock to communications devices
    15.
    发明授权
    Systems and methods for distributing GPS clock to communications devices 有权
    将GPS时​​钟分配给通信设备的系统和方法

    公开(公告)号：US08018950B2

    公开(公告)日：2011-09-13

    申请号：US12076315

    申请日：2008-03-17

    申请人： Shiquan Wu ,  Jung Yee

    发明人： Shiquan Wu ,  Jung Yee

    IPC分类号： H04L12/28 ,  H04L12/56

    CPC分类号： G04G7/00 ,  H04J3/0635 ,  H04J3/0638 ,  H04J3/0658

    摘要： A method for synchronizing network elements to a global clock derived from the GPS clock acquired by a plurality of base stations. The global clock is distributed to controllers of various networks, and from there to network access devices. The network access devices further distribute the global clock to various wire-line and local wireless networks and from there, to the users served by these networks. The user equipment is enabled with a simple clock discipliner that adjusts the local clock to the global clock, resulting in a reliable synchronization across the converged communication networks.

    摘要翻译： 一种用于将网络元件与由多个基站获取的GPS时钟导出的全局时钟同步的方法。 全局时钟分配给各种网络的控制器，从那里到网络接入设备。 网络接入设备进一步将全球时钟分配给各种有线和本地无线网络，并从那里向由这些网络服务的用户分发。 用户设备启用了简单的时钟规则，可以将本地时钟调整到全局时钟，从而在融合的通信网络中实现可靠的同步。

    WHITE SPACE SPECTRUM SENSOR FOR TELEVISION BAND DEVICES
    16.
    发明申请
    WHITE SPACE SPECTRUM SENSOR FOR TELEVISION BAND DEVICES 失效
    用于电视带设备的白色空间光谱传感器

    公开(公告)号：US20110043710A1

    公开(公告)日：2011-02-24

    申请号：US12543259

    申请日：2009-08-18

    申请人： Vajira Samarasooriya ,  Shiquan Wu

    发明人： Vajira Samarasooriya ,  Shiquan Wu

    IPC分类号： H04N5/50

    CPC分类号： H04N5/50 ,  H03J1/0091 ,  H04L27/0006 ,  H04N21/42203 ,  H04N21/4345 ,  H04N21/4383 ,  H04W16/14

    摘要： A television band device has DTV pilot signal detection logic that generates DTV pilot signal detection decisions associated with a monitored television channel. A wireless microphone detection logic generates wireless microphone detection decisions associated with the monitored television channel. A sensing manager receives DTV pilot signal detection decisions and the wireless microphone detection decisions and analyzes at least one the respective decisions to determine whether the monitored television channel is available white space.

    摘要翻译： 电视频带设备具有DTV导频信号检测逻辑，其产生与被监视的电视频道相关联的DTV导频信号检测决策。 无线麦克风检测逻辑产生与所监视的电视频道相关联的无线麦克风检测决定。 感测管理器接收DTV导频信号检测决策和无线麦克风检测决定并分析至少一个相应的决定以确定被监视的电视频道是否是可用的空白空间。

    Method and System For Sensing Available Spectrum In Wireless Communication Systems
    18.
    发明申请
    Method and System For Sensing Available Spectrum In Wireless Communication Systems 失效
    用于在无线通信系统中感测可用频谱的方法和系统

    公开(公告)号：US20100182928A1

    公开(公告)日：2010-07-22

    申请号：US12692471

    申请日：2010-01-22

    申请人： Shiquan Wu ,  Jung Yee

    发明人： Shiquan Wu ,  Jung Yee

    IPC分类号： H04L12/26 ,  H04J1/00

    CPC分类号： H04L5/0007 ,  H04L5/0037 ,  H04L27/0006

    摘要： Managing RF spectrum usage by secondary, or unlicensed, devices in portions of the RF spectrum where licensed, or primary, services operate is a requirement of cognitive radio systems. To perform the necessary spectrum scanning, a transition period, such as a TTG or RTG can be extended and the scanning performed during the extended period. The presence of a primary service signal can also detected by detecting an energy signature of the primary service signal in a known sequence. In both cases, there is no need to define quiet periods during which secondary devices scan the RF spectrum, thus resulting in saving of resources and improved QoS.

    摘要翻译： 在许可或主要业务运作的RF频谱部分，通过辅助或非许可的设备管理RF频谱使用是认知无线电系统的要求。 为了执行必要的频谱扫描，可以扩展诸如TTG或RTG的过渡时段，并且在延长的时间段内执行扫描。 主服务信号的存在也可以通过以已知序列检测主服务信号的能量签名来检测。 在这两种情况下，不需要定义安静时段，次级设备扫描RF频谱，从而节省资源并提高QoS。