公开(公告)号：US20190109637A9

公开(公告)日：2019-04-11

申请号：US15634251

申请日：2017-06-27

申请人： CABLE TELEVISION LABORATORIES, INC

发明人： Thomas H. Williams ,  Ryan Richard Vail

IPC分类号： H04B10/077 ,  H04B10/25 ,  H04B3/48 ,  H04B10/071

CPC分类号： H04B10/0775 ,  H04B3/48 ,  H04B10/071 ,  H04B10/2503

摘要： A system for testing line attenuation defects includes a data transmission line configured to transmit a forward signal in a first direction, at least one reflection point at a first location along the data transmission line, a test probe configured to (i) electrically contact a center conductor at a second location along the data transmission line, (ii) introduce a broadband data signal onto the data transmission line, and (iii) measure, at the second location, a return signal from the reflection point, and a spectrum capturing device in operable contact with the test probe. The spectrum capturing device is configured to (i) collect and arrange frequency data measured by the test probe for the test signal, the return signal, and a standing wave created by the sum of the broadband data signal and the return signal, (ii) determine the voltage VSWR of the standing wave, and (iii) calculate a line loss from the VSWR.

公开(公告)号：US09969024B2

公开(公告)日：2018-05-15

申请号：US14575671

申请日：2014-12-18

申请人： ILLINOIS TOOL WORKS INC.

发明人： Marc Lee Denis

IPC分类号： B23K9/10 ,  B23K9/095 ,  H04B3/10 ,  B23K9/12 ,  H04B3/54 ,  B23K9/32 ,  H04B3/466 ,  H04B3/48

CPC分类号： B23K9/1043 ,  B23K9/095 ,  B23K9/0956 ,  B23K9/1006 ,  B23K9/1062 ,  B23K9/124 ,  B23K9/32 ,  H04B3/10 ,  H04B3/466 ,  H04B3/48 ,  H04B3/54

摘要： A welding system having a welding power supply and a processor is provided. The welding power supply is configured to provide a welding power for a welding application through a weld cable. The processor is disposed within the welding power supply and the processor is configured to transmit and receive data related to a welding operating parameter through the weld cable. The processor is also configured to determine an equalization filter coefficient related to the weld cable.

公开(公告)号：US20170201293A1

公开(公告)日：2017-07-13

申请号：US15471955

申请日：2017-03-28

申请人： Huawei Technologies Co., Ltd.

发明人： Xiaolong Zhang ,  Jie Lv

IPC分类号： H04B3/48 ,  H04B3/06

CPC分类号： H04B3/48 ,  H04B3/06 ,  H04H20/12 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/0224 ,  H04N21/6118 ,  H04N21/6168

摘要： A channel transmission characteristic obtaining method and apparatus, where the method includes obtaining transmission characteristic curves of at least two channels in a cable modem in a channel scanning manner, where the at least two channels form one contiguous frequency band, and frequencies corresponding to the transmission characteristic curves of the at least two channels include frequency values on a same order of magnitude, and amplitude values on a same order of magnitude, translating the transmission characteristic curves of the channels in an amplitude direction, to make amplitudes corresponding to same frequencies on all transmission characteristic curves overlapped in order to form one continuous curve, and setting the continuous curve as a transmission characteristic curve of the contiguous frequency band.

公开(公告)号：US20160337512A1

公开(公告)日：2016-11-17

申请号：US15151373

申请日：2016-05-10

申请人： Ikanos Communications, Inc.

发明人： Raghunath Kalavai

IPC分类号： H04M3/30

CPC分类号： H04M3/30 ,  H04B3/46 ,  H04B3/48 ,  H04M3/306

摘要： Methods, systems, and devices are described for wired communication. In one aspect, a method relates to detecting cable impairments with reflectometry. The method includes transmitting a test signal and receiving one or more reflected signals in response to the test signal. The method also includes applying a first asymmetric windowing function to the one or more reflected signals to generate frequency domain data. Additionally, the method includes transforming the frequency domain data from a frequency-domain representation to a time-domain representation to generate a time domain reflectometry (TDR) signal. The method can detect and locate a bridge tap, line cut, and/or termination condition on the transmission line.

摘要翻译： 描述了有线通信的方法，系统和设备。 一方面，一种方法涉及用反射测量法检测电缆损伤。 该方法包括响应于测试信号发送测试信号和接收一个或多个反射信号。 该方法还包括将第一非对称窗函数应用于一个或多个反射信号以产生频域数据。 另外，该方法包括将频域数据从频域表示变换为时域表示以产生时域反射（TDR）信号。 该方法可以检测和定位传输线上的桥接抽头，线路切断和/或终止条件。

公开(公告)号：US09397935B1

公开(公告)日：2016-07-19

申请号：US13951092

申请日：2013-07-25

申请人： Sprint Communications Company L.P.

发明人： Eugene S. Mitchell, Jr. ,  Nicholas David Caola Kullman ,  Sreekar Marupaduga, Jr.

IPC分类号： H04W4/00 ,  H04L12/721 ,  H04B3/48 ,  H04L12/26 ,  H04B3/46

CPC分类号： H04B3/48 ,  H03F3/72 ,  H03F2200/294 ,  H04B3/46 ,  H04L43/08

摘要： Systems, methods, and computer-readable media for modifying signals are provided. Embodiments include staged low noise amplifiers (LNA's) in order to customize signal modification. Signals may be modified at various fixed gains by different LNA's within a device. Additionally, signals may be attenuated or receive no modification at all in order to ensure signals are within a preferred signal range.

摘要翻译： 提供了用于修改信号的系统，方法和计算机可读介质。 实施例包括分级低噪声放大器（LNA），以便定制信号修改。 信号可以由设备内的不同LNA的各种固定增益进行修改。 另外，为了确保信号在优选的信号范围内，信号可以被衰减或完全不接收修改。

公开(公告)号：US09054794B2

公开(公告)日：2015-06-09

申请号：US14286710

申请日：2014-05-23

申请人： Broadcom Corporation

发明人： Christopher Cunningham ,  Jianming Zhu

IPC分类号： H04B3/46 ,  H04B17/00 ,  H04B3/48 ,  H04L12/24 ,  H04M3/08 ,  H04M3/30 ,  H04L12/28 ,  H04L12/64

CPC分类号： H04B17/336 ,  H04B3/48 ,  H04L12/2898 ,  H04L41/0631 ,  H04L41/0677 ,  H04L2012/6478 ,  H04M3/085 ,  H04M3/304 ,  H04M3/306 ,  H04M2201/12

摘要： A modem or associated computing or testing device is configured to detect the presence of one or more faults that affect DSL communications, and upon their detection, generate, for example, an indication, communication or message that recommends corrective action. In this context, a fault is generally caused by one or more unfiltered devices, impulsive noises, malfunctioning modems, or other factor that does not affect measured attenuation or measured noise, but does affect the signal-to-noise ratio (SNR) of the link. In addition to being able to generate a message guiding a user through corrective action, the system can estimate the rate impact of the detected fault.

摘要翻译： 调制解调器或相关联的计算或测试设备被配置为检测影响DSL通信的一个或多个故障的存在，并且在其检测时，生成例如建议纠正动作的指示，通信或消息。 在这种情况下，故障通常由一个或多个未滤波的设备，脉冲噪声，故障调制解调器或不影响测量的衰减或测量的噪声的其他因素引起，但是确实影响了信噪比（SNR） 链接。 除了能够通过纠正措施产生指导用户的消息之外，系统还可以估计检测到的故障的速率影响。

公开(公告)号：US20150085908A1

公开(公告)日：2015-03-26

申请号：US14033301

申请日：2013-09-20

申请人： Cable Television Laboratories, Inc.

发明人： David F. Hunter

IPC分类号： H04B15/00 ,  H04B3/48 ,  H04B3/46

CPC分类号： H04B15/00 ,  H04B3/46 ,  H04B3/462 ,  H04B3/48

摘要： A customer premises equipment (“CPE”) device for use with a cable signal provided by a cable system. The CPE device includes an antenna and a signal processing system. The antenna receives an interfering radio frequency (“RF”) signal generated by one or more external wireless signal sources as a copy signal. The signal processing system receives the interfering RF signal, the cable signal, and the copy signal, modifies the copy signal to produce a processed copy signal, and combines the cable signal, the interfering RF signal, and the processed copy signal to produce a combined signal. The signal processing system also monitors error rate values of the combined signal, and adjusts the copy signal such that the copy signal at least partially cancels the interfering RF signal in the combined signal thereby reducing the error rate values of the combined signal.

摘要翻译： 用于由电缆系统提供的电缆信号使用的客户驻地设备（“CPE”）设备。 CPE设备包括天线和信号处理系统。 天线接收由一个或多个外部无线信号源产生的干扰射频（“RF”）信号作为复制信号。 信号处理系统接收干扰RF信号，电缆信号和复制信号，修改复制信号以产生经处理的复制信号，并组合电缆信号，干扰RF信号和经处理的复制信号，以产生组合 信号。 信号处理系统还监视组合信号的错误率值，并且调整复制信号，使得复制信号至少部分地消除组合信号中的干扰RF信号，从而减少组合信号的误码率值。

公开(公告)号：US08743938B2

公开(公告)日：2014-06-03

申请号：US14092484

申请日：2013-11-27

申请人： Aware, Inc.

发明人： Christopher Cunningham ,  Jianming Zhu

IPC分类号： H04B3/46

CPC分类号： H04B17/336 ,  H04B3/48 ,  H04L12/2898 ,  H04L41/0631 ,  H04L41/0677 ,  H04L2012/6478 ,  H04M3/085 ,  H04M3/304 ,  H04M3/306 ,  H04M2201/12

摘要： A modem or associated computing or testing device is configured to detect the presence of one or more faults that affect DSL communications, and upon their detection, generate, for example, an indication, communication or message that recommends corrective action. In this context, a fault is generally caused by one or more unfiltered devices, impulsive noises, malfunctioning modems, or other factor that does not affect measured attenuation or measured noise, but does affect the signal-to-noise ratio (SNR) of the link. In addition to being able to generate a message guiding a user through corrective action, the system can estimate the rate impact of the detected fault.

摘要翻译： 调制解调器或相关联的计算或测试设备被配置为检测影响DSL通信的一个或多个故障的存在，并且在其检测时，生成例如建议纠正动作的指示，通信或消息。 在这种情况下，故障通常由一个或多个未滤波的设备，脉冲噪声，故障调制解调器或不影响测量的衰减或测量的噪声的其他因素引起，但是确实影响了信噪比（SNR） 链接。 除了能够通过纠正措施产生指导用户的消息之外，系统还可以估计检测到的故障的速率影响。

公开(公告)号：US20110205917A1

公开(公告)日：2011-08-25

申请号：US12857084

申请日：2010-08-16

申请人： Yasuaki Konishi

发明人： Yasuaki Konishi

IPC分类号： H04L12/26

CPC分类号： H04L47/10 ,  H04B3/32 ,  H04B3/48

摘要： A signal processing system that includes a transmitter component, a receiver component, a comparison component and an execution component is provided. The transmitter component transmits a predetermined detection signal, using one or other of a plurality of signal lines of a transmission path. The receiver component receives an interference signal, occurring in a different signal line from the signal line the transmitter component used for transmitting the detection signal, the interference signal occurring from interference due to the detection signal transmitted from the transmitter component. The comparison component compares a voltage value of the interference signal received by the receiver component with a predetermined reference voltage value. The execution component, based on a comparison result of comparison by the comparison component, executes predetermined processing according to the comparison result.

摘要翻译： 提供了包括发射机组件，接收机组件，比较组件和执行组件的信号处理系统。 发射机组件使用传输路径的多条信号线中的一条或多条发送预定的检测信号。 接收器部件接收干扰信号，该干扰信号发生在与用于发送检测信号的发射机部件的信号线不同的信号线上，干扰信号是由于从发射机部件发射的检测信号而产生的干扰。 比较部件将由接收器部件接收的干扰信号的电压值与预定的参考电压值进行比较。 执行部件基于比较部分的比较比较结果，根据比较结果执行预定处理。

公开(公告)号：US07885402B2

公开(公告)日：2011-02-08

申请号：US10719771

申请日：2003-11-21

申请人： Richard D. Ellison

发明人： Richard D. Ellison

IPC分类号： H04M1/00 ,  H04M9/00

CPC分类号： H03G3/3026 ,  H03G3/001 ,  H03G3/301 ,  H04B3/48

摘要： Methods, systems, and devices are provided for controlling the power level of voice signal streams. A gain controller embodiment includes a measurement module, a gain factor setting module, and a gain adjustment module. The measurement module includes program instructions to measure a power level of a voice signal stream. The gain factor setting module includes program instructions to set a gain value by comparing the measured power level to a threshold. The gain adjustment module includes program instructions to adjust a power level of a voice signal stream by applying the gain value to the voice signal stream.

摘要翻译： 提供了用于控制语音信号流的功率电平的方法，系统和设备。 增益控制器实施例包括测量模块，增益因子设置模块和增益调整模块。 测量模块包括用于测量语音信号流的功率电平的程序指令。 增益因子设置模块包括通过将测量的功率电平与阈值进行比较来设置增益值的程序指令。 增益调整模块包括通过将增益值应用于语音信号流来调整语音信号流的功率电平的程序指令。