Radio frequency front end for television band receiver and spectrum sensor
    2.
    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:US08976302B2

    公开(公告)日:2015-03-10

    申请号:US13429205

    申请日:2012-03-23

    IPC分类号: H04N5/50

    摘要: A radio frequency front end for a television band receiver and spectrum sensor includes a low noise amplifier that amplifies a received signal output of a radio frequency antenna connected to the radio frequency front end, a pin diode attenuator circuit that selectively attenuates an output of the low noise amplifier, and a buffer amplifier that amplifies an output of the pin diode attenuator.

    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放大连接到射频前端的射频天线的接收信号输出的低噪声放大器,选择性地衰减低频输出的引脚二极管衰减器电路 噪声放大器和放大pin二极管衰减器的输出的缓冲放大器。

    System and method for protecting transmissions of wireless microphones operating in television band white space
    5.
    发明授权
    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:US08792589B2

    公开(公告)日:2014-07-29

    申请号:US12779782

    申请日:2010-05-13

    IPC分类号: H04N5/455

    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。

    System and Method For Protecting Transmissions of Wireless Microphones Operating in Television Band White Space
    6.
    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

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

    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。

    WHITE SPACE SPECTRUM SENSOR FOR TELEVISION BAND DEVICES
    7.
    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

    IPC分类号: H04N5/50

    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。

    TV WHITE SPACE DEVICES USING STRUCTURED DATABASES
    8.
    发明申请
    TV WHITE SPACE DEVICES USING STRUCTURED DATABASES 有权
    电视使用结构化数据库的空白设备

    公开(公告)号:US20130103684A1

    公开(公告)日:2013-04-25

    申请号:US13498106

    申请日:2010-07-09

    IPC分类号: G06F17/30

    摘要: A two-level database structure for use by unlicensed TVBD devices operating in TV white space comprises a central database and local databases. The central database comprises two sub-database: the central licensed database which maintains information about all licensed TV devices and the central unlicensed database which maintains information about unlicensed wireless devices operating in TV spectrum. The local database is created by each TVBD device or TVBD network when it initiates and it stores information related to all transmitters in the local area including location, power transmission levels, operating schedule, sensing results, backup channel information. The local databases communicate with central database to query it about licensed usage of TV spectrum and register with central database. The local databases communicate with each other to exchange information about channel usage, sensing results, transmission patterns and other information that will allow the local databases to negotiate coexistence without central coordinator. The locally implemented negotiation prevents the overloading of the central database.

    摘要翻译: 用于在TV空白中工作的未经许可的TVBD设备使用的两级数据库结构包括中央数据库和本地数据库。 中央数据库包括两个子数据库:中央许可数据库,其维护关于所有许可的电视设备的信息和中央非许可数据库,其维护关于在TV频谱中操作的未许可的无线设备的信息。 每个TVBD设备或TVBD网络创建本地数据库,并且存储与本地区域中的所有发射机有关的信息,包括位置,功率传输级别,操作时间表,感测结果,备份信道信息。 本地数据库与中央数据库进行通信,查询有关电视频谱的许可使用情况,并向中央数据库注册。 本地数据库相互通信以交换关于信道使用,感测结果,传输模式和其他信息的信息,这些信息将允许本地数据库在没有中央协调器的情况下协商共存。 本地实施的协商可以防止中央数据库的超载。

    White space spectrum sensor for television band devices
    9.
    发明授权
    White space spectrum sensor for television band devices 失效
    用于电视频带设备的白色空间频谱传感器

    公开(公告)号:US08373759B2

    公开(公告)日:2013-02-12

    申请号:US12543259

    申请日:2009-08-18

    IPC分类号: H04N17/00

    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 APPARATUS FOR DETECTING THE PRESENCE OF A DTV PILOT TONE IN A HIGH NOISE ENVIRONMENT
    10.
    发明申请
    METHOD AND APPARATUS FOR DETECTING THE PRESENCE OF A DTV PILOT TONE IN A HIGH NOISE ENVIRONMENT 有权
    用于检测高噪声环境中数字电视引导音的存在的方法和装置

    公开(公告)号:US20130018622A1

    公开(公告)日:2013-01-17

    申请号:US13182172

    申请日:2011-07-13

    IPC分类号: G06F19/00 G01R29/26

    CPC分类号: H04B1/76 H04N5/50

    摘要: A DTV pilot tone is detected in a noisy environment by computing a power average of Fast Fourier Transform (FFT) output spectra of a received signal, finding a power peak in the averaged outputs, computing an adjustment parameter to center the power peak in a Discrete Fourier Transform bin of the averaged output spectra, applying the adjustment parameter to adjust the received signal, computing a coherent average of FFT output spectra of the adjusted signal, and, testing a power spectrum of the coherent average for the presence of the DTV pilot tone.

    摘要翻译: 在噪声环境中通过计算接收信号的快速傅里叶变换(FFT)输出频谱的功率平均值,找到平均输出中的功率峰值,计算调整参数以使功率峰值居中在离散值中,从而在噪声环境中检测DTV导频音 平均输出光谱的傅立叶变换仓,应用调整参数调整接收信号,计算调整信号的FFT输出光谱的相干平均值,以及测试DTV导频音的存在的相干平均的功率谱 。