利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

131 条记录 (耗时 0.03 秒)

    Video bandwidth resolution in DFT-based spectrum analysis
    1.
    发明授权
    Video bandwidth resolution in DFT-based spectrum analysis 有权
    基于DFT的频谱分析中的视频带宽分辨率

    公开(公告)号：US08249386B2

    公开(公告)日：2012-08-21

    申请号：US12058546

    申请日：2008-03-28

    申请人： Yi He ,  Marcus K. Dasilva ,  Kathryn A. Engholm

    发明人： Yi He ,  Marcus K. Dasilva ,  Kathryn A. Engholm

    IPC分类号： G06K9/36

    CPC分类号： G01R23/16

    摘要： A method and apparatus for improved video bandwidth resolution in DFT-based spectrum analysis is disclosed. A first embodiment comprises an emulation of a continuous range of video bandwidths in DFT-based spectrum analysis using overlapping resolution bandwidth frames. A second embodiment utilizes frame weighting to reduce the standard deviation in the spectrum of noise signal to emulate a corresponding standard deviation of a specified video bandwidth.

    摘要翻译： 公开了一种在基于DFT的频谱分析中改进视频带宽分辨率的方法和装置。 第一实施例包括使用重叠分辨率带宽帧在基于DFT的频谱分析中对视频带宽的连续范围的仿真。 第二实施例利用帧加权来降低噪声信号频谱中的标准偏差，以模拟指定视频带宽的相应标准偏差。

    Data Compression for Producing Spectrum Traces
    2.
    发明申请
    Data Compression for Producing Spectrum Traces 审中-公开
    数据压缩生成光谱追踪

    公开(公告)号：US20080270440A1

    公开(公告)日：2008-10-30

    申请号：US12092251

    申请日：2006-11-01

    申请人： Yi He ,  Kathryn A. Engholm

    发明人： Yi He ,  Kathryn A. Engholm

    IPC分类号： G06F17/30

    CPC分类号： G10L19/0212 ,  G01R23/16

    摘要： A data compression method for producing spectrum traces may divide signal data into multiple transform frames, produce a spectrum trace for each transform frame using a time domain to frequency domain transform, and combine the multiple frames from the analysis window into a single spectrum trace according to the spectrum amplitude of corresponding points in each frame. A device comprising a port to receive a signal or data set; and circuitry in communication with the port to segment the data record into frames, multiply each frame by a windowing function, transform each frame from a time domain representation to a frequency domain representation, and compress the frames using a detection function to create a single spectrum trace. This data compression provides flexibility to allow users to select analysis length, resolution bandwidth (RBW) and number of trace points independently, eliminating the coupling often found in traditional approaches.

    摘要翻译： 用于产生频谱轨迹的数据压缩方法可以将信号数据划分为多个变换帧，使用时域到频域变换产生每个变换帧的频谱轨迹，并根据分析窗口将多个帧从分析窗口组合成单个频谱轨迹 每帧中对应点的频谱幅度。 一种设备，包括用于接收信号或数据集的端口; 以及与端口通信的电路，用于将数据记录分割成帧，将每帧乘以加窗函数，将每个帧从时域表示转换为频域表示，并使用检测功能压缩帧以创建单个频谱 跟踪。 该数据压缩提供了灵活性，允许用户独立地选择分析长度，分辨率带宽（RBW）和跟踪点数量，消除了传统方法中常见的耦合。

    Modulation domain trigger
    4.
    发明授权
    Modulation domain trigger 有权
    调制域触发

    公开(公告)号：US07765086B2

    公开(公告)日：2010-07-27

    申请号：US11009161

    申请日：2004-12-09

    申请人： Alfred K. Hillman, Jr. ,  Marcus K. Dasilva ,  Edward C. Gee ,  Yi He

    发明人： Alfred K. Hillman, Jr. ,  Marcus K. Dasilva ,  Edward C. Gee ,  Yi He

    IPC分类号： G06F11/30

    CPC分类号： G01R23/16 ,  G01R13/0263

    摘要： A modulation domain trigger generator demodulates a modulated input signal to extract information content, and a trigger is generated from the extracted information content in response to specified trigger criteria. The modulation domain trigger generator may be combined with a plurality of different types of trigger generators, including frequency domain and time domain trigger generators, to process the input signal in response to different trigger criteria to produce more than one trigger. The different trigger outputs may be combined to produce an acquisition trigger to acquire data surrounding an anomalous or identifiable event within the input signal.

    摘要翻译： 调制域触发发生器解调调制输入信号以提取信息内容，并且响应于指定的触发标准从所提取的信息内容产生触发。 调制域触发发生器可以与多个不同类型的触发发生器组合，包括频域和时域触发发生器，以响应于不同的触发标准处理输入信号以产生多于一个的触发。 可以组合不同的触发输出以产生采集触发以获取围绕输入信号内的异常或可识别事件的数据。

    Filter equalization using magnitude measurement data
    5.
    发明授权
    Filter equalization using magnitude measurement data 有权
    使用幅度测量数据滤波均衡

    公开(公告)号：US07649930B2

    公开(公告)日：2010-01-19

    申请号：US11272285

    申请日：2005-11-09

    申请人： Yi He ,  Thomas C. Hill, III ,  Marcus K. Dasilva

    发明人： Yi He ,  Thomas C. Hill, III ,  Marcus K. Dasilva

    IPC分类号： H03H7/30 ,  H03H7/40 ,  H03K5/159

    CPC分类号： H04L27/00

    摘要： A filter equalization technique for an analog signal path, such as in an instrument that simultaneously measures a signal over a band of frequencies, uses magnitude measurement data for high frequency bands for which phase-calibrated sources are not readily available. A sinusoidal signal source together with an accurate power meter is used to provide a stepped frequency input over a desired frequency band to the analog signal path with an accurate measured magnitude. The output of the analog signal path is digitized and the resulting frequency magnitudes are computed. Then the resulting power meter results are deducted from the frequency magnitudes measured each time by the instrument to determine the magnitude response of the analog signal path. Using a Hilbert transform the corresponding phase response is determined based on a minimum phase assumption over the desired frequency band. From the magnitude and phase responses an inverse or digital equalization filter may be designed for the analog signal path.

    摘要翻译： 用于模拟信号路径的滤波器均衡技术，例如在同时测量频带上的信号的仪器中，使用相位校准源不容易获得的高频带的幅度测量数据。 使用正弦信号源与精确的功率计一起，以精确的测量幅度向模拟信号路径提供期望频带上的阶跃频率输入。 将模拟信号路径的输出数字化，并计算得到的频率幅度。 然后，由仪器每次测量的频率幅度中扣除所得的功率计结果，以确定模拟信号路径的幅度响应。 使用希尔伯特变换，基于期望频带上的最小相位假设来确定相应的相位响应。 根据幅度和相位响应，可以为模拟信号路径设计反相或数字均衡滤波器。

    Utilization of a multifunctional pin to control a switched-mode power converter
    8.
    发明授权
    Utilization of a multifunctional pin to control a switched-mode power converter 有权
    利用多功能引脚来控制开关式功率转换器

    公开(公告)号：US08102679B2

    公开(公告)日：2012-01-24

    申请号：US12192399

    申请日：2008-08-15

    申请人： Xiaowu Gong ,  Siu Kam Kok ,  Yi He ,  Tuck Meng Chan

    发明人： Xiaowu Gong ,  Siu Kam Kok ,  Yi He ,  Tuck Meng Chan

    IPC分类号： H02M3/335

    CPC分类号： H02M3/156 ,  H02M3/33507 ,  H02M2001/0022 ,  H02M2001/0032 ,  Y02B70/16

    摘要： An embodiment of the invention relates to a power converter including a resistor divider with an internal node to sense an input line voltage. The internal node is operable as a multifunctional pin. A controller compares a feedback voltage dependent on a power converter output characteristic to a current-sense signal including an offset dependent on a voltage of the internal node to control entry and exit of the power converter from burst mode operation. The node may be employed to manage power converter operation by sensing or controlling its voltage to signal operation in a standby or burst mode, to sense the input line voltage, to enable an external system to signal shutdown to the power converter, and to enable the power converter to signal a delayed restart condition to the external system.

    摘要翻译： 本发明的实施例涉及一种功率转换器，其包括具有用于感测输入线电压的内部节点的电阻分压器。 内部节点可用作多功能引脚。 控制器将取决于功率转换器输出特性的反馈电压与包括取决于内部节点的电压的偏移的电流检测信号进行比较，以控制功率转换器的进入和退出以进行突发模式操作。 可以采用该节点来管理功率转换器的操作，通过感测或控制其电压以在备用或突发模式下信号操作，以感测输入线路电压，使外部系统能够向功率转换器发出信号关闭， 电源转换器向外部系统发出延迟重启状态信号。

    Apparatus, system, and method for multifunctional pin in an integrated circuit
    10.
    发明授权
    Apparatus, system, and method for multifunctional pin in an integrated circuit 失效
    集成电路中多功能引脚的装置，系统和方法

    公开(公告)号：US07667526B2

    公开(公告)日：2010-02-23

    申请号：US11461303

    申请日：2006-07-31

    申请人： Tuck Meng Chan ,  Xiao Wu Gong ,  Yi He ,  Meng Kiat Jeoh ,  Junyang Luo

    发明人： Tuck Meng Chan ,  Xiao Wu Gong ,  Yi He ,  Meng Kiat Jeoh ,  Junyang Luo

    IPC分类号： H03K17/687

    CPC分类号： H03K17/0822 ,  H03K17/133

    摘要： Some embodiments of the invention include an integrated circuit having a node or pin to detect a first information during a first a detection period and to detect a second information during a second detection period. In some embodiments, the information at the pin may allow the integrated circuit to operate in a quasi-resonant operation. Other embodiments are described and claimed.

    摘要翻译： 本发明的一些实施例包括具有节点或引脚以在第一检测周期期间检测第一信息并在第二检测周期期间检测第二信息的集成电路。 在一些实施例中，引脚处的信息可以允许集成电路在准谐振操作中操作。 描述和要求保护其他实施例。