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23 条记录 (耗时 0.017 秒)

    Communication Receiver Enhancements Using Multi-Signal Capture
    1.
    发明申请
    Communication Receiver Enhancements Using Multi-Signal Capture 有权
    使用多信号捕获的通信接收机增强功能

    公开(公告)号：US20150263772A1

    公开(公告)日：2015-09-17

    申请号：US14665890

    申请日：2015-03-23

    申请人： BROADCOM CORPORATION

    发明人： Ramon Alejandro Gomez ,  Bruce J. Currivan ,  Steven T. Jaffe ,  Loke Kun Tan ,  Young Shin ,  Hanli Zou ,  Lin He ,  Leonard Dauphinee ,  Thomas Joseph Kolze ,  Francesco Gatta

    IPC分类号： H04B1/16 ,  H04B17/20 ,  H04B1/00

    CPC分类号： H04B1/16 ,  H04B1/0003 ,  H04B1/3805 ,  H04B17/20

    摘要： A method and apparatus is disclosed to determine communications receiver parameters from multiple channels of a received communications signal and to configure and/or adjust communications receiver parameters to acquire one or more channels from among the multiple channels of the received communications signal. A communications receiver observes a multi-channel communication signal as it passes through a communication channel. The communications receiver determines one or more communications receiver parameters from the multiple channels of the received communications signal. The communications receiver configures and/or adjusts communications receiver parameters to acquire the one or more channels from among the multiple channels of the received communications signal.

    摘要翻译： 公开了一种方法和装置，用于从接收到的通信信号的多个信道中确定通信接收机参数，并且配置和/或调整通信接收机参数以从所接收的通信信号的多个信道中获取一个或多个信道。 通信接收机在通过通信信道时观察多信道通信信号。 通信接收机从接收到的通信信号的多个信道确定一个或多个通信接收机参数。 通信接收机配置和/或调整通信接收机参数以从所接收的通信信号的多个信道中获取一个或多个信道。

    Gain Invariant Impedance Feedback Amplifier
    2.
    发明申请
    Gain Invariant Impedance Feedback Amplifier 有权
    增益不变阻抗反馈放大器

    公开(公告)号：US20150084690A1

    公开(公告)日：2015-03-26

    申请号：US14049588

    申请日：2013-10-09

    申请人： Broadcom Corporation

    发明人： Giuseppe Cusmai ,  Vijayaramalingam Periasamy ,  Xi Chen ,  Ramon Alejandro Gomez

    IPC分类号： H03F3/21 ,  H03F3/217

    CPC分类号： H03F3/2171 ,  H03F1/22 ,  H03F1/26 ,  H03F1/34 ,  H03F1/56 ,  H03F3/19 ,  H03F3/245 ,  H03F2200/123 ,  H03F2200/151 ,  H03F2200/498

    摘要： A system includes a weighting element, a transconductance circuit, a feedback loop, and an auxiliary loop. In some implementations, the transconductance circuit may accept an input and provide a first portion of an output for amplification at a variable amplification level to generate an amplifier output. The feedback loop may provide a portion of the amplifier output as a first feedback to the input. The first feedback may be associated with an impedance that may vary with the amplification level. The auxiliary loop may provide a second feedback to the input to reduce the dependence of the impedance on the amplification level.

    摘要翻译： 系统包括加权元件，跨导电路，反馈回路和辅助回路。 在一些实现中，跨导电路可以接受输入并提供输出的第一部分用于以可变放大电平进行放大以产生放大器输出。 反馈回路可以将放大器输出的一部分提供给输入的第一反馈。 第一反馈可能与可能随放大电平变化的阻抗相关联。 辅助回路可以向输入端提供第二反馈以减少阻抗对放大电平的依赖性。

    Broadband amplifier linearization using captured histogram data
    3.
    发明授权
    Broadband amplifier linearization using captured histogram data 有权

    公开(公告)号：US09432222B2

    公开(公告)日：2016-08-30

    申请号：US14140887

    申请日：2013-12-26

    申请人： BROADCOM CORPORATION

    发明人： Ramon Alejandro Gomez ,  Bruce Joseph Currivan ,  Lin He ,  Thomas Joseph Kolze ,  Franciscus Maria Leonardus van der Goes ,  Jun Wang

    IPC分类号： H04L25/03

    CPC分类号： H04L25/03057 ,  H04L25/03343

    摘要： A transmitter's operation is characterized using components having relatively low cost and low complexity. A device includes comparator(s) that compare a transmitter's analog output to predetermined level(s) to generate count(s) associated with analog output range bin(s). Each of the predetermined levels is associated with a corresponding one of the analog output range bins. A transfer function of the transmitter is generated using the comparison count values associated with the analog output range bin(s). A histogram may be generated from the comparison count values associated with the various analog output range bins. An equalizer is implemented to process data that will be transmitted by the transmitter. The equalizer uses equalizer parameter(s) that are selected based on the characterization of the transmitter (e.g., its transfer function, its histogram, etc.). The equalizer may use default or start up parameters until the transmitter's operation is characterized.

    Noise localization within cable based communication systems
    4.
    发明申请
    Noise localization within cable based communication systems 有权
    基于电缆的通信系统中的噪声定位

    公开(公告)号：US20160028496A1

    公开(公告)日：2016-01-28

    申请号：US14800177

    申请日：2015-07-15

    申请人： BROADCOM CORPORATION

    发明人： Bruce Joseph Currivan ,  Richard Stephen Prodan ,  Leo Montreuil ,  Thomas Joseph Kolze ,  Ramon Alejandro Gomez ,  Jonathan Sooki Min ,  Fang Lu ,  Donald George McMullin ,  Kevin Lee Miller ,  Peter Cangiane ,  Mark Edward Laubach

    IPC分类号： H04B17/18 ,  H04B17/345 ,  H04L5/00

    CPC分类号： H04B17/18 ,  H04B3/46 ,  H04B17/0085 ,  H04B17/15 ,  H04B17/26 ,  H04B17/29 ,  H04B17/345 ,  H04L1/20 ,  H04L1/24 ,  H04L5/0007 ,  H04L2012/6421

    摘要： A communication device (e.g., a cable modem (CM)) includes a digital to analog converter (DAC) and a power amplifier (PA) that generate a signal to be transmitting via a communication interface to another communication device (e.g., cable modem termination system (CMTS)). The CM includes diagnostic analyzer that samples the signal based on a fullband sample capture corresponding to a full bandwidth and/or a subset (e.g., narrowband) sample capture to generate a fullband and/or subset signal capture (e.g., of an upstream (US) communication channel between the CM and the CMTS). The diagnostic analyzer can be configured to generate sample captures of the signal based on any desired parameter(s), condition(s), and/or trigger(s). The CM then transmits the signal to the CMTS and the fullband and/or subset signal capture to the CMTS and/or a proactive network maintenance (PNM) communication device to determine at least one characteristic associated with performance of the US communication channel.

    摘要翻译： 通信设备（例如，电缆调制解调器（CM））包括数字到模拟转换器（DAC）和功率放大器（PA），其产生要经由通信接口发送到另一通信设备的信号（例如，电缆调制解调器终端 系统（CMTS））。 CM包括诊断分析器，其基于与全带宽和/或子集（例如，窄带）采样捕获相对应的全频带采样捕获来采样信号，以产生全频带和/或子集信号捕获（例如，上游（US ）CM和CMTS之间的通信通道）。 诊断分析器可以被配置为基于任何期望的参数，条件和/或触发来产生信号的采样捕获。 然后，CM将信号发送到CMTS，将全频带和/或子集信号捕捉发送到CMTS和/或主动网络维护（PNM）通信设备，以确定与美国通信信道的性能相关联的至少一个特性。

    Gain invariant impedance feedback amplifier
    5.
    发明授权
    Gain invariant impedance feedback amplifier 有权
    增益不变阻抗反馈放大器

    公开(公告)号：US09166540B2

    公开(公告)日：2015-10-20

    申请号：US14049588

    申请日：2013-10-09

    申请人： Broadcom Corporation

    发明人： Giuseppe Cusmai ,  Vijayaramalingam Periasamy ,  Xi Chen ,  Ramon Alejandro Gomez

    IPC分类号： H03F1/38 ,  H03F3/217 ,  H03F1/22 ,  H03F1/26 ,  H03F1/34 ,  H03F1/56 ,  H03F3/19 ,  H03F3/24

    CPC分类号： H03F3/2171 ,  H03F1/22 ,  H03F1/26 ,  H03F1/34 ,  H03F1/56 ,  H03F3/19 ,  H03F3/245 ,  H03F2200/123 ,  H03F2200/151 ,  H03F2200/498

    摘要： A system includes a weighting element, a transconductance circuit, a feedback loop, and an auxiliary loop. In some implementations, the transconductance circuit may accept an input and provide a first portion of an output for amplification at a variable amplification level to generate an amplifier output. The feedback loop may provide a portion of the amplifier output as a first feedback to the input. The first feedback may be associated with an impedance that may vary with the amplification level. The auxiliary loop may provide a second feedback to the input to reduce the dependence of the impedance on the amplification level.

    摘要翻译： 系统包括加权元件，跨导电路，反馈回路和辅助回路。 在一些实现中，跨导电路可以接受输入并提供输出的第一部分用于以可变放大电平进行放大以产生放大器输出。 反馈回路可以将放大器输出的一部分提供给输入的第一反馈。 第一反馈可能与可能随放大电平变化的阻抗相关联。 辅助回路可以向输入端提供第二反馈以减少阻抗对放大电平的依赖性。

    FRAME ADAPTIVE DIGITAL TO ANALOG CONVERTER AND METHODS FOR USE THEREWITH
    6.
    发明申请
    FRAME ADAPTIVE DIGITAL TO ANALOG CONVERTER AND METHODS FOR USE THEREWITH 有权

    公开(公告)号：US20150214975A1

    公开(公告)日：2015-07-30

    申请号：US14243105

    申请日：2014-04-02

    申请人： BROADCOM CORPORATION

    发明人： Ramon Alejandro Gomez ,  Thomas Joseph Kolze ,  Bruce Joseph Currivan

    IPC分类号： H03M1/66

    CPC分类号： H03M1/742 ,  H03M1/002 ,  H03M1/0648 ,  H03M1/662 ,  H03M1/68 ,  H03M1/747

    摘要： A digital to analog converter (DAC) includes a thermometer coder that generates a plurality of micro-current source analog controls on a frame-by-frame or symbol-by-symbol basis and to process digital inputs from symbols or frames of data based on a thermometer coding to generate a plurality of micro-current source inputs. A plurality of micro-current sources generate a corresponding plurality of micro-current source outputs in response to the plurality of micro-current source inputs, wherein first selected ones of the plurality of micro-current sources are powered-off in response to the plurality of micro-current source analog controls for a first symbol or frame of the plurality of symbols or frames of data. A summing circuit generates an analog output based a sum of the corresponding plurality of micro-current source outputs.

    Broadband amplifier linearization using captured histogram data
    7.
    发明申请
    Broadband amplifier linearization using captured histogram data 有权
    使用捕获的直方图数据的宽带放大器线性化

    公开(公告)号：US20150117508A1

    公开(公告)日：2015-04-30

    申请号：US14140887

    申请日：2013-12-26

    申请人： BROADCOM CORPORATION

    发明人： Ramon Alejandro Gomez ,  Bruce Joseph Currivan ,  Lin He ,  Thomas Joseph Kolze ,  Franciscus Maria Leonardus van der Goes ,  Jun Wang

    IPC分类号： H04L25/03

    CPC分类号： H04L25/03057 ,  H04L25/03343

    摘要： A transmitter's operation is characterized using components having relatively low cost and low complexity. A device includes comparator(s) that compare a transmitter's analog output to predetermined level(s) to generate count(s) associated with analog output range bin(s). Each of the predetermined levels is associated with a corresponding one of the analog output range bins. A transfer function of the transmitter is generated using the comparison count values associated with the analog output range bin(s). A histogram may be generated from the comparison count values associated with the various analog output range bins. An equalizer is implemented to process data that will be transmitted by the transmitter. The equalizer uses equalizer parameter(s) that are selected based on the characterization of the transmitter (e.g., its transfer function, its histogram, etc.). The equalizer may use default or start up parameters until the transmitter's operation is characterized.

    摘要翻译： 发射机的操作特征在于使用具有相对较低成本和低复杂度的组件。 一种设备包括将发射机的模拟输出与预定电平进行比较以产生与模拟输出范围区相关联的计数的比较器。 每个预定电平与相应的一个模拟输出范围相关联。 使用与模拟输出范围bin相关联的比较计数值来生成发送器的传递函数。 可以从与各种模拟输出范围箱相关联的比较计数值生成直方图。 实现均衡器来处理将由发射机发射的数据。 均衡器使用基于发射机的表征选择的均衡器参数（例如，其传递函数，其直方图等）。 均衡器可以使用默认或启动参数，直到发射机的操作被表征为止。