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    RADIO FREQUENCY DETECTION ASSEMBLY AND METHOD FOR DETECTING RADIO FREQUENCIES
    2.
    发明申请
    RADIO FREQUENCY DETECTION ASSEMBLY AND METHOD FOR DETECTING RADIO FREQUENCIES 有权
    无线电频率检测装置及无线电频率检测方法

    公开(公告)号：US20080025238A1

    公开(公告)日：2008-01-31

    申请号：US11460662

    申请日：2006-07-28

    申请人： Steven H. McCown ,  Kurt Warren Derr

    发明人： Steven H. McCown ,  Kurt Warren Derr

    IPC分类号： H04J3/20

    CPC分类号： G01S5/04 ,  G08B13/2491 ,  G08B21/0261 ,  G08B21/0283

    摘要： A radio frequency detection assembly is described and which includes a radio frequency detector which detects a radio frequency emission produced by a radio frequency emitter from a given location which is remote relative to the radio frequency detector; a location assembly electrically coupled with the radio frequency detector and which is operable to estimate the location of the radio frequency emitter from the radio frequency emission which has been received; and a radio frequency transmitter electrically coupled with the radio frequency detector and the location assembly, and which transmits a radio frequency signal which reports the presence of the radio frequency emitter.

    摘要翻译： 描述射频检测组件，其包括射频检测器，其从相对于射频检测器远程的给定位置检测由射频发射器产生的射频发射; 位置组件，其与射频检测器电耦合，并且可操作以从已经接收的射频发射估计射频发射器的位置; 以及与射频检测器和位置组件电耦合的射频发射器，并且发射报告射频发射器的存在的射频信号。

    System and method for distributing a single multicast multi-program audio stream over a network
    3.
    发明授权
    System and method for distributing a single multicast multi-program audio stream over a network 失效
    通过网络分发单个组播多节目音频流的系统和方法

    公开(公告)号：US06970940B1

    公开(公告)日：2005-11-29

    申请号：US09809822

    申请日：2001-03-16

    申请人： Mark O. Vogel ,  Stephen L. Maynard ,  Ali Akgun

    发明人： Mark O. Vogel ,  Stephen L. Maynard ,  Ali Akgun

    IPC分类号： G06F15/16 ,  H04J3/20 ,  H04L12/18

    CPC分类号： H04L12/18

    摘要： A system and method for distributing multi-program audio over a network includes the use of a Local Area Network, Wide Area Network, an Intranet and the Internet. The system includes a network audio source, a network distribution system and end devices. The method, for distributing multi-program audio over a network includes creating a network audio frame from a plurality of blocks of data from at least one audio program, placing each network audio frame within a transport structure for transport across the network and assigning an address to the transport structure prior to delivering the transport structure to a physical media.

    摘要翻译： 通过网络分发多节目音频的系统和方法包括使用局域网，广域网，内联网和因特网。 该系统包括网络音频源，网络分发系统和终端设备。 用于通过网络分发多节目音频的方法包括从来自至少一个音频节目的多个数据块创建网络音频帧，将每个网络音频帧放置在传输结构内用于跨网络传输并分配地址 在将运输结构传送到物理介质之前的运输结构。

    Offset-compensated switched-capacitor filter for TDM multichannel analog signals
    4.
    发明授权
    Offset-compensated switched-capacitor filter for TDM multichannel analog signals 失效
    用于TDM多通道模拟信号的偏移补偿开关电容滤波器

    公开(公告)号：US4745594A

    公开(公告)日：1988-05-17

    申请号：US10432

    申请日：1987-02-03

    申请人： Yutaka Takahashi

    发明人： Yutaka Takahashi

    IPC分类号： H03H19/00 ,  H04J3/10 ,  H04J3/20

    CPC分类号： H04J3/20 ,  H03H19/004 ,  H04J3/10

    摘要： For adaptive line equalization of a time-division multiplexed analog signal, an offset-compensated filter circuit comprises a timing circuit for generating channel-switching signals respectively synchronized with the time slots of the TDM signal. A switched-capacitor filter comprising an operational amplifier and a switched-capacitor circuit is responsive to the channel-switching signals for sequentially establishing transfer functions specific to the time slots of the TDM signal. A plurality of switched-capacitor DC decoupling circuits are connected to the output of the switched-capacitor filter. These DC decoupling circuits are respectively associated with the channel-switching signals for coupling a respective one of the filtered components to an input terminal of a summing amplifier. Each of the DC decoupling circuits has a first and a second capacitor and switches responsive to the presence of the associated channel-switching signal for charging the first capacitor with a voltage developed at the output terminal of the switched capacitor filter and charging the second capacitor with a voltage developed between the output of the switched capacitor filter and the input terminal of the summing amplifier and discharging the first and second capacitors in response to the absence of the associated channel-switching signal. The operational amplifier offset voltage and clock feedthrough of the switched-capacitor filter are eliminated.

    摘要翻译： 对于时分复用模拟信号的自适应线路均衡，偏移补偿滤波器电路包括用于产生分别与TDM信号的时隙同步的信道切换信号的定时电路。 包括运算放大器和开关电容电路的开关电容滤波器响应于信道切换信号，以顺序地建立专用于TDM信号的时隙的传送功能。 多个开关电容器DC去耦电路连接到开关电容滤波器的输出端。 这些DC去耦电路分别与用于将滤波的分量中的相应一个耦合到加法放大器的输入端的信道切换信号相关联。 每个DC去耦电路具有第一和第二电容器，并且响应于存在相关联的沟道切换信号的开关，用于对开关电容滤波器的输出端产生的电压对第一电容器充电，并向第二电容器充电， 在开关电容滤波器的输出和求和放大器的输入端之间产生电压，并响应于不存在关联的通道切换信号而对第一和第二电容器进行放电。 消除了开关电容滤波器的运算放大器失调电压和时钟馈通。

    Electric resonant transfer filter
    5.
    发明授权
    Electric resonant transfer filter 失效
    电谐振转移滤波器

    公开(公告)号：US3886316A

    公开(公告)日：1975-05-27

    申请号：US33761673

    申请日：1973-03-02

    申请人： GTE AUTOMATIC ELECTRIC LAB INC

    发明人： GETGEN LAWRENCE E

    IPC分类号： H03H17/02 ,  H04J3/20 ,  H04J3/00

    CPC分类号： H03H17/0201 ,  H04J3/20

    摘要： A resonant transfer filter is disclosed for use in a resonant transfer system having a normally open gate which is closed at a sampling frequency for the transfer of energy. The filter incorporates inductance elements and capacitance elements having values determined directly from the transmission function for filters in the resonant transfer mode developed by Cattermole and having a passband width of less than one-half of the sampling frequency. The filter element values are determined by first choosing a prototype filter configuration which approximates the system attenuation requirements and which is suitable for resonant transfer applications. The prototype element values are used as starting values which are revised or altered to decrease the difference between the Cattermole transmission function when computed using the starting element values, and later the altered values, and the ideal transmission function, equaling unity over the passband and zero in the stopband.

    摘要翻译： 公开了一种谐振转移滤波器，用于具有常开门的谐振传输系统，该常开门以能量转移的采样频率闭合。 滤波器包括电感元件和电容元件，其具有由Cattermole开发的谐振传输模式中的滤波器的传输函数直接确定的值，并具有小于采样频率的一半的通带宽度。 滤波器元件值通过首先选择近似系统衰减要求的原型滤波器配置并且适用于谐振传输应用来确定。 原型元素值被用作修改或改变的起始值，以减少使用起始元素值计算的Cattermole传递函数之间的差异，以及稍后改变的值以及理想的传输函数，在通带上等于1 在禁区。

    Resonant transfer employing negative resistance amplifiers
    6.
    发明授权
    Resonant transfer employing negative resistance amplifiers 失效
    共振转移使用负电阻放大器

    公开(公告)号：US3626314A

    公开(公告)日：1971-12-07

    申请号：US1476870

    申请日：1970-02-26

    申请人： INT STANDARD ELECTRIC CORP

    发明人： BROUX JOSEPH ANTONIUS

    IPC分类号： H04J3/20 ,  H03F15/00

    CPC分类号： H04J3/20

    摘要： A sample of energy representing information is transferred, by use of the resonant transfer principle, to a storage capacitor. This sample of energy is amplified by being connected during a predetermined time to a negative resistance amplifier. The amplified energy is then retransferred by use of the resonant transfer principle to a load, i.e. to another capacitance.

    Time division multiplex system
    8.
    发明授权
    Time division multiplex system 失效

    公开(公告)号：US3617642A

    公开(公告)日：1971-11-02

    申请号：US3617642D

    申请日：1970-06-10

    申请人： NORTH ELECTRIC CO

    发明人： ARO ENN

    IPC分类号： H04J3/20 ,  H04Q11/04 ,  H04J3/00

    CPC分类号： H04J3/20 ,  H04Q11/04

    摘要： Arrangements for improving resonant transfer operation in time division multiplex communication systems by providing proper terminating impedance for lines connected to the highways during signal splitting by actuating the highway discharge gate during the signal transfer interval of the assigned time slot. In one embodiment involving interhighway gate means connected between transmit and receive highways, the inhibit signal to the interhighway gate means which accomplishes splitting is also directed as an enable signal to the highway discharge gate. At times, such as during the ringing operation, only the transmit highway discharge gate is so controlled, and at other times, such as during trunk signaling, both transmit and receive highway discharge gates may be so controlled.