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。

公开(公告)号：US07769090B2

公开(公告)日：2010-08-03

申请号：US11694942

申请日：2007-03-31

申请人： Amir Peleg ,  Daniel Wajcer ,  Itay Lusky ,  Naftali Sommer ,  Nohik Semel

发明人： Amir Peleg ,  Daniel Wajcer ,  Itay Lusky ,  Naftali Sommer ,  Nohik Semel

IPC分类号： H04B3/00

CPC分类号： H04B3/48

摘要： A novel apparatus for and method of estimating the cable length of an active network link. The cable diagnostics mechanism of the invention is particularly suited for use in estimating the length of Ethernet network between two edges when the link is active, i.e. data is being transmitted in both directions simultaneously and the transmission of test pulses is not possible. The cable length estimation mechanism of the present invention is based on a well-known property of the spectrum of the insertion loss of the cable, namely, the linear relationship between the attenuation of the cable at a given frequency in decibels and the cable length. Information characterizing this relationship is extracted and used to determine the length of the cable.

摘要翻译： 一种用于估计有源网络链路的电缆长度的新型装置和方法。 本发明的电缆诊断机构特别适用于当链路处于活动状态时估计两个边缘之间的以太网网络的长度，即同时在两个方向上发送数据，并且测试脉冲的传输是不可能的。 本发明的电缆长度估计机构是基于电缆的插入损耗频谱的众所周知的特性，即以给定频率以分贝计的电缆的衰减与电缆长度之间的线性关系。 提取表征该关系的信息，并用于确定电缆的长度。

公开(公告)号：US07664522B2

公开(公告)日：2010-02-16

申请号：US11484346

申请日：2006-07-11

申请人： Reinhard Stolle ,  Bernd Heise

发明人： Reinhard Stolle ,  Bernd Heise

IPC分类号： H04Q7/20

CPC分类号： H04B3/48 ,  H04L27/2626

摘要： A device for adjusting a transmit power spectrum of a subscriber device of a communication network, having a means for receiving an attenuation measure for an attenuation, which a signal experiences on its way from a transmit/receive means to the subscriber device of the communication network connected to the transmit/receive means, from the subscriber device, a means for determining a modified attenuation measure and shaping coefficients for a frequency-dependent shaping of the transmit power spectrum based on the attenuation measure determined by and received from the subscriber device, and a means for transferring the modified attenuation measure and the shaping coefficients to the subscriber device.

摘要翻译： 一种用于调整通信网络的用户设备的发射功率谱的设备，具有用于接收衰减的衰减测量的装置，信号在从发射/接收装置到通信网络的用户设备的路上经历 从用户设备连接到发射/接收装置，用于基于由订户设备确定的和从用户设备接收的衰减测量，确定修改的衰减测量和整形系数以用于发射功率谱的频率相关整形的装置，以及 用于将修改的衰减测量和整形系数传送到用户设备的装置。

公开(公告)号：US20050094785A1

公开(公告)日：2005-05-05

申请号：US11005055

申请日：2004-12-06

申请人： Roger Faulkner

发明人： Roger Faulkner

IPC分类号： H04B3/48 ,  H04M3/30 ,  H04M11/00

CPC分类号： H04M3/306 ,  H04B3/48 ,  H04M3/2209 ,  H04M3/30

摘要： A method and apparatus for pre-qualifying lines with respect to estimating the insertion loss of the line is presented. End-to-end insertion loss at high frequencies is estimated from measurements made at low frequencies through the voice switch at the central office of a telephone company. An AC voltage waveform is applied to the telephone line being tested. Real and imaginary components of the resultant waveform are measured. These measurements are captured and used to estimate the insertion loss of the telephone line at frequencies in the range of 40 kHz to 300 kHz.

公开(公告)号：US20050084020A1

公开(公告)日：2005-04-21

申请号：US10933872

申请日：2004-09-03

申请人： Hidekazu Kikuchi

发明人： Hidekazu Kikuchi

IPC分类号： H04L25/02 ,  H04B3/00 ,  H04B3/30 ,  H04B3/48 ,  H04L7/00 ,  H04L7/033 ,  H04L7/04 ,  H04L25/40

CPC分类号： H04B3/48 ,  H04B3/30 ,  H04L7/0012 ,  H04L7/0338

摘要： A data receiving device according to the present invention includes a reference clock signal that is transmitted through a differential conductor pair, an estimation means for estimating attenuation characteristics in the differential conductor pair serving as a transmission path of the reference clock signal, and a compensation means for compensating a transmission path attenuation of an NRZ signal based on the estimated attenuation characteristics. Since the reference clock repeats a transition between 0 and 1 at the same period as NRZ data period without fail, it is possible to estimate high frequency attenuation characteristics of a conductor by observing the amplitude of the reference clock at the receiving end. Based on the estimation, characteristic control of a compensation filter is performed with respect to the NRZ signal. Thus, it is possible to reproduce a proper transmission signal from a signal waveform that has been deteriorated by the attenuation caused in a long-distance transmission of high-speed digital data using the differential cable, and propagation skew due to positive and negative asymmetry of the differential pair.

摘要翻译： 根据本发明的数据接收装置包括通过差分导体对传输的参考时钟信号，用于估计用作参考时钟信号的传输路径的差分导体对中的衰减特性的估计装置，以及补偿装置 用于基于估计的衰减特性补偿NRZ信号的传输路径衰减。 由于参考时钟在与NRZ数据周期相同的周期内重复0和1之间的转换，所以可以通过观察接收端的参考时钟的振幅来估计导体的高频衰减特性。 基于该估计，相对于NRZ信号执行补偿滤波器的特性控制。 因此，可以从使用差分电缆的高速数字数据的长距离传输引起的衰减恶化的信号波形中再现适当的发送信号，并且由于正负不对称性的传播偏差 差分对。

公开(公告)号：US3662126A

公开(公告)日：1972-05-09

申请号：US3662126D

申请日：1970-01-29

申请人： TELECOMMUNICATIONS SA

发明人： CHAUMONT ROBERT JEAN

IPC分类号： H04B3/48 ,  H04M1/24 ,  H04B3/46

CPC分类号： H04B3/48

摘要： This invention relates to the maintenance of a transmission chain which, from a variable input level, delivers a constant output level. To do this, the said transmission chain comprises, in addition to its functional components, an artificial line with adjustable attenuation, which the operator can use when faced with an input level determined by elements situated up-side the said chain, so as to obtain the constant output level necessary for the working of the elements situated down-side the said chain. In accordance with this process the value of the artificial attenuation line varies inversely to the value of the artificial attenuation line integrated in the said transmission chain.

摘要翻译： 本发明涉及从可变输入电平传递恒定输出电平的传输链的维护。 为此，所述传输链除了其功能部件之外还包括具有可调节衰减的人造线，当面对由位于所述链的上侧的元件确定的输入电平时，操作者可以使用它，以便获得 对于位于所​​述链的下侧的元件的加工所需的恒定输出水平。

公开(公告)号：US3461385A

公开(公告)日：1969-08-12

申请号：US3461385D

申请日：1966-05-31

申请人： WANDEL & GOLTERMANN

发明人： BAYER HERBERT

IPC分类号： G01R1/28 ,  G01R19/00 ,  G01R19/10 ,  G01R19/22 ,  H04B3/48 ,  G01R1/02

CPC分类号： H04B3/48 ,  G01R1/28 ,  G01R19/00 ,  G01R19/0007 ,  G01R19/10 ,  G01R19/22

公开(公告)号：US2189111A

公开(公告)日：1940-02-06

申请号：US22899738

申请日：1938-09-08

申请人： AMERICAN TELEPHONE & TELEGRAPH

发明人： BETTLE HUGHES SAMUEL

IPC分类号： H04B3/48

CPC分类号： H04B3/48

公开(公告)号：US11996907B2

公开(公告)日：2024-05-28

申请号：US17858882

申请日：2022-07-06

申请人： Nokia Solutions and Networks Oy

发明人： Olivier Delaby ,  Nicolas Dupuis ,  Axel Van Damme

IPC分类号： H04B3/48 ,  H04B3/487 ,  H04B17/10

CPC分类号： H04B3/48 ,  H04B3/487 ,  H04B17/101

摘要： Embodiments of the present disclosure relate to an apparatus including means configured to perform: obtaining a measured channel frequency response, and a measured noise power spectral density for a line of a wired network susceptible to an impairment; deriving, in case of an indication of an impairment present on the line, from the measured channel frequency response and the measured noise power spectral density, a first theoretical noise representation for the line with the impairment and a second theoretical noise representation for the line without the impairment; and determining information indicative of a location of the impairment in the line, by processing the measured noise power spectral density, the first theoretical noise representation, and the second theoretical noise representation with a neural network.

公开(公告)号：US11901968B2

公开(公告)日：2024-02-13

申请号：US17235813

申请日：2021-04-20

申请人： Marvell Asia Pte, Ltd.

发明人： David Shen ,  Seid Alireza Razavi Majomard ,  KongHoei Susanto Lim

IPC分类号： H04B3/46 ,  H04B3/32 ,  H04B3/48 ,  H04B3/487

CPC分类号： H04B3/32 ,  H04B3/48 ,  H04B3/487

摘要： A method of operating an Ethernet transceiver includes initializing the Ethernet transceiver during a training mode of operation by monitoring background link operating characteristics with on-chip circuitry during a non-data-transfer interval to establish a baseline alien crosstalk value. Training data is then transmitted at a first transmit power level and first data rate to a link partner during a data transfer interval. The link is monitored with the on-chip circuitry during the data transfer interval to detect feedback indicating alien crosstalk effects to neighboring Ethernet links due to the transmitting. The first data rate and/or first transmit power level is then adjusted to an adjusted second data rate and/or second transmit power level based on the feedback. The Ethernet transceiver is then operated in a normal data transfer mode utilizing the adjusted second data rate and/or transmit power level.