公开(公告)号：US06978015B1

公开(公告)日：2005-12-20

申请号：US09710579

申请日：2000-11-10

申请人： Mark Alan Erickson ,  Ioannis Kanellakopoulos ,  John Josef Hench ,  Sunil C. Shah ,  James W. Waite ,  Michail Tsatsanis ,  Gurcan Aral

发明人： Mark Alan Erickson ,  Ioannis Kanellakopoulos ,  John Josef Hench ,  Sunil C. Shah ,  James W. Waite ,  Michail Tsatsanis ,  Gurcan Aral

IPC分类号： H04B3/46 ,  H04M1/74 ,  H04M1/76 ,  H04M3/18 ,  H04M11/06

CPC分类号： H04M3/18 ,  H04B3/487 ,  H04M1/74 ,  H04M11/062

摘要： A method that sends upstream a collection of data samples measured from a DSL line.

摘要翻译： 从DSL线路测量的数据样本集合向上游发送的一种方法。

公开(公告)号：US06970560B1

公开(公告)日：2005-11-29

申请号：US09710703

申请日：2000-11-10

申请人： John Josef Hench ,  Thorkell Gudmundsson ,  Amir Gholamhossein Zadeh Aghdam ,  Ioannis Kanellakopoulos ,  Gurcan Aral ,  Yaolong Tan ,  Harbinder Singh ,  Sunil C. Shah

发明人： John Josef Hench ,  Thorkell Gudmundsson ,  Amir Gholamhossein Zadeh Aghdam ,  Ioannis Kanellakopoulos ,  Gurcan Aral ,  Yaolong Tan ,  Harbinder Singh ,  Sunil C. Shah

IPC分类号： H04B3/46 ,  H04M1/76 ,  H04M3/08 ,  H04M3/18 ,  H04M3/30

CPC分类号： H04M3/085 ,  H04B3/487 ,  H04L5/0007 ,  H04L5/0046 ,  H04M3/18 ,  H04M3/304

摘要： Events that occur in a number of in domain communication channels where each channel is used by a communication service, are detected. A Bayesian Belief Network (BBN) defines a probabilistic cause-effect relationship between each cause and each effect on a victim channel. The probability of each of a number of possible causes as being a cause of interference in the victim channel is determined, by propagating observations of the interference backwards through the BBN.

摘要翻译： 检测到在通信服务使用每个信道的域通信信道中的多个中发生的事件。 贝叶斯信仰网络（BBN）定义了每个原因与每个对受害者信道的影响之间的概率因果关系。 通过BBN向后传播干扰的观测来确定多个可能原因中的每一个作为受害信道干扰的原因的概率。

公开(公告)号：US06894989B1

公开(公告)日：2005-05-17

申请号：US09650854

申请日：2000-08-29

申请人： Mandeep Singh Chadha ,  Shawn Robert McCaslin ,  Mile Milisavljevic

发明人： Mandeep Singh Chadha ,  Shawn Robert McCaslin ,  Mile Milisavljevic

IPC分类号： H04M1/76 ,  H04B3/23 ,  H04L1/00 ,  H04B3/20

CPC分类号： H04L1/0054 ,  H04B3/23 ,  H04L25/03993

摘要： A separation circuit, method of determining a residual level of an echo, and an echo canceling system, bit pump and transceiver employing the circuit and method. The echo canceling system employing the separation circuit is couplable between a transmit and receive path of the bit pump and generates an echo canceling signal. In one embodiment, the separation circuit includes a symbol determination circuit that accepts a receive signal, propagating along the receive path, substantially free of an echo and determines a symbol associated with the receive signal. The separation circuit also includes an estimator stage, coupled to the symbol determination circuit, that receives the symbol and provides an estimated receive signal. The separation circuit generates data representing a residual level of the echo as a function of the estimated receive signal and the echo canceling signal.

摘要翻译： 分离电路，确定回波残余电平的方法以及回波消除系统，采用该电路和方法的位泵和收发器。 使用分离电路的回波消除系统可以在位泵的发送和接收路径之间耦合，并产生回波消除信号。 在一个实施例中，分离电路包括符号确定电路，其接收沿着接收路径传播的基本上没有回波的接收信号，并确定与接收信号相关联的符号。 分离电路还包括耦合到符号确定电路的估计器级，其接收符号并提供估计的接收信号。 分离电路产生表示作为估计的接收信号和回波消除信号的函数的回波的残余电平的数据。

公开(公告)号：US06885746B2

公开(公告)日：2005-04-26

申请号：US10209547

申请日：2002-07-31

申请人： Robert Hausman ,  Stefano Galli ,  Kenneth Kerpez

发明人： Robert Hausman ,  Stefano Galli ,  Kenneth Kerpez

IPC分类号： H04B3/23 ,  H04B3/46 ,  H04L1/24 ,  H04M3/08 ,  H04M11/06 ,  H04M1/76 ,  H04M7/00 ,  H04M9/00

CPC分类号： H04B3/23 ,  H04B3/487 ,  H04L1/24 ,  H04M3/085 ,  H04M11/062

摘要： Crosstalk between subscriber loops used to transmit different broadband services through the same bundled telephone cable is a significant limitation to providing digital subscriber line services. A method for estimating the crosstalk, identifying the sources of the crosstalk and predicting additional sources of crosstalk are disclosed. The crosstalk sources are identified in the frequency domain by maximizing the correlation with a “basis set” of received crosstalk PSDs which consist of the cascade of a finite set of known transmit PSDs types times a representative set of crosstalk couplings. Multiple crosstalk types are identified with a technique of successive spectral subtraction. Once a type is identified the crosstalk disturber is compared against all other members of the complete set for that type. Additionally, Mutliple Regression (MR) techniques and a Matching Pursuit (MP) algorithm are used to increase the ability of the system and method to identify various crosstalk disturbers. The identification of the crosstalk disturber is then used to perform crosstalk cancellation and spectrum management in a DSL system.

摘要翻译： 用于通过相同捆绑电话线传输不同宽带业务的用户环路之间的串扰对于提供数字用户线路业务是一个重大限制。 公开了一种用于估计串扰的方法，识别串扰的来源并预测附加的串扰源。 通过最大化与接收的串扰PSD的“基本集合”的相关性来在频域中识别串扰源，所述串扰PSD由有代表的已知传输PSD类型的级联组成，代表一组典型的串扰耦合。 使用连续频谱减法的技术来识别多个串扰类型。 一旦识别出类型，将串扰干扰器与该类型的完整集合的所有其他成员进行比较。 此外，使用多重回归（MR）技术和匹配追踪（MP）算法来提高系统和方法识别各种串扰干扰器的能力。 然后，串行干扰器的识别用于在DSL系统中执行串扰消除和频谱管理。

公开(公告)号：US20050025307A1

公开(公告)日：2005-02-03

申请号：US10632745

申请日：2003-08-01

申请人： Hui Xu ,  Janet Yun

发明人： Hui Xu ,  Janet Yun

IPC分类号： G06F3/00 ,  H03K19/0185 ,  H04B1/40 ,  H04L25/02 ,  H04M1/76 ,  H04M7/04 ,  H04M1/00 ,  H04M9/00

CPC分类号： H04M1/76

摘要： Configurable communications modules and methods of making the same are described. In one aspect, a communications module includes a data channel and a termination impedance controller. The data channel is operable to translate data signals in at least one direction between a transmission cable interface and a host device interface. The data channel has a variably configurable termination impedance at a host device node that is connectable to a host device. The termination impedance controller is operable to set the variably configurable termination impedance of the data channel to match the termination impedance to the host system.

摘要翻译： 描述可配置的通信模块及其制造方法。 一方面，通信模块包括数据信道和终端阻抗控制器。 数据信道可操作以在传输电缆接口和主机设备接口之间的至少一个方向上翻译数据信号。 数据通道在可连接到主机设备的主机设备节点处具有可变配置的终端阻抗。 终端阻抗控制器可操作地设置数据信道的可变配置的终端阻抗以匹配终端阻抗到主机系统。

公开(公告)号：US6081593A

公开(公告)日：2000-06-27

申请号：US30317

申请日：1998-02-25

申请人： Yeong-Woo Kim

发明人： Yeong-Woo Kim

IPC分类号： H04M11/10 ,  H04B3/23 ,  H04M1/76 ,  H04M1/19

CPC分类号： H04B3/23 ,  H04M1/76

摘要： A method for transmitting white noise for echo cancellation in the voice mail system (VMS) for providing voice guidance message services to callers connected with switchboard is characterized in that specified ring-back tone signals are transmitted to the switchboard with the white noise being inserted between the ring-back tone signals.

摘要翻译： 在用于向与交换机连接的呼叫者提供语音指导消息服务的语音邮件系统（VMS）中发送用于回波消除的白噪声的方法的特征在于，指定的回铃音信号被发送到交换机，其中白噪声被插入在 回铃音信号。

公开(公告)号：US5995619A

公开(公告)日：1999-11-30

申请号：US993131

申请日：1997-12-18

申请人： Patrick Bailly ,  Dominique Delbecq

发明人： Patrick Bailly ,  Dominique Delbecq

IPC分类号： H04M1/60 ,  H04M1/76 ,  H04M1/00

CPC分类号： H04M1/76 ,  H04M1/6008

摘要： A telephony device includes a rectifier bridge (GB) intended to be connected to a telephone line and to supply a rectified line current, an interface module (INT) permitting the transmission of signals in the direction of the telephone line and supplying an information signal (Iin), and an amplifier (AGC) whose gain is proportional to the value of a control current (Icnt) supplied by a control module (CNT). The control current (Icnt) is proportional to an exponential of a linear equation of the inverse of the value of the information signal (Iin) in order to compensate for the attenuation which the signal has undergone during its transport through the telephone line. The control module is formed by a translinear module (TRL) which receives the input signal (Iin) and produces a translinear current (Itr) whose value may be expressed in the form of a linear equation of the inverse value of the input signal (Iin), and an exponential module (EXP) which receives the translinear current (Itr) and produces the control current (Icnt) whose value may be expressed as proportional to an exponential of the value of the translinear current (Itr).

摘要翻译： 电话设备包括旨在连接到电话线并提供经整流的线路电流的整流桥（GB），允许沿电话线的方向传输信号并提供信息信号的接口模块（INT） Iin）和其增益与由控制模块（CNT）提供的控制电流（Icnt）的值成比例的放大器（AGC）。 控制电流（Icnt）与信息信号（Iin）的值的倒数的线性方程的指数成比例，以便补偿信号在其通过电话线传送期间经历的衰减。 控制模块由接收输入信号（Iin）并产生跨导线电流（Itr）的跨线模块（TRL）形成，其值可以以输入信号（Iin）的反相值的线性方程式的形式表示 ）和一个指数模块（EXP），其接收跨线电流（Itr）并产生控制电流（Icnt），其值可以表示为与跨线电流（Itr）的值的指数成正比。

公开(公告)号：US5893034A

公开(公告)日：1999-04-06

申请号：US906938

申请日：1997-08-06

申请人： Hideo Hikuma ,  Kiyoshi Tanaka ,  Koichi Tomono

发明人： Hideo Hikuma ,  Kiyoshi Tanaka ,  Koichi Tomono

IPC分类号： H04M1/58 ,  H04M1/725 ,  H04M1/76 ,  H04Q7/20 ,  H04Q7/34

CPC分类号： H04M1/585 ,  H04M1/76 ,  H04M1/725

摘要： A parent telephone set comprises a transformer, a sidetone level reducing circuit, and a first secret talk processing circuit for executing digital secret talk processing, a counterpart slave telephone set comprises a second secret talk processing circuit for executing digital secret talk processing, a delaying circuit for delaying an aural signal from the slave telephone set microphone by a specified delay time, and a level reducing circuit for reducing the level of output from the second secret talk processing circuit according to the output from the delaying circuit. The specified delay time in the delaying circuit is set according to the time required for digital secret talk processing in the first secret talk processing circuit as well as in the second secret talk processing circuit.

摘要翻译： 母电话机包括变压器，侧音级降低电路和用于执行数字秘密通话处理的第一秘密通话处理电路，对方从电话机包括用于执行数字秘密通话处理的第二秘密通话处理电路，延迟电路 用于将来自从属电话机麦克风的听觉信号延迟指定的延迟时间;以及电平降低电路，用于根据延迟电路的输出降低来自第二秘密通话处理电路的输出电平。 延迟电路中的指定延迟时间根据第一秘密通话处理电路以及第二秘密通话处理电路中的数字秘密通话处理所需的时间来设定。

公开(公告)号：US5742676A

公开(公告)日：1998-04-21

申请号：US721913

申请日：1996-09-27

申请人： Fernand Courtois

发明人： Fernand Courtois

IPC分类号： H04M1/00 ,  H04M1/60 ,  H04M1/76 ,  H04M19/08 ,  H04M1/72

CPC分类号： H04M1/76 ,  H04M1/6025

摘要： A circuit comprising a transistor (T1) is connected in series to a resistor (RM) for measuring the line current; the whole is connected to the terminals (1,2) of the line. According to the invention, a light-emitting diode (18) is connected in series to a variable current source (20), the whole being connected in parallel to the emitter/collector path of the transistor (T1), and the variable current source, which receives a monitoring signal that represents the line current, produces a current that varies between a zero current and a maximum current for an average line current that varies between a low threshold and a high threshold.

摘要翻译： 包括晶体管（T1）的电路串联连接到用于测量线路电流的电阻器（RM）; 整个连接到线路的终端（1,2）。 根据本发明，发光二极管（18）串联连接到可变电流源（20），其整体与晶体管（T1）的发射极/集电极路径并联连接，并且可变电流源 ，其接收代表线路电流的监视信号，产生在零阈值和高阈值之间变化的平均线路电流的零电流和最大电流之间变化的电流。

公开(公告)号：US5694460A

公开(公告)日：1997-12-02

申请号：US597756

申请日：1996-02-07

申请人： Brian Albert Wittman

发明人： Brian Albert Wittman

IPC分类号： H04M1/74 ,  H04M9/00 ,  H04M1/60 ,  H04M1/76 ,  H04M7/04

CPC分类号： H04M1/74 ,  H04M9/006

摘要： A circuit for, and method of, reducing cross-coupled interference between first and second telephone lines of a multi-line telephone instrument and a telephone instrument containing the same. The circuit includes: (1) a first differential input amplifier having first tip and ring inputs coupled to conductors of the first telephone line and first tip and ring shunt resistors coupling the first tip and ring inputs to a signal reference of the telephone instrument and (2) a second differential input amplifier having second tip and ring inputs coupled to conductors of the second telephone line and second tip and ring shunt resistors coupling the second tip and ring inputs to the signal reference, the first and second tip and ring shunt resistors decreasing a common mode input resistance of the first and second differential input amplifiers, thereby attenuating cross-coupled interference common to both of the first and second telephone lines. The circuit and method may further be suitably employed to reduce the effects of common mode interference in other telephone instruments, including, but not limited to, single-line telephone instruments.

摘要翻译： 一种用于减少多线电话乐器的第一和第二电话线之间的交叉耦合干扰的电路及其方法，以及包含该电话乐器的电话乐器。 电路包括：（1）第一差分输入放大器，其具有耦合到第一电话线的导体的第一尖端和环形输入，以及将第一尖端和环形输入耦合到电话仪器的信号参考的第一尖端和环形分流电阻器， 2）第二差分输入放大器，其具有耦合到第二电话线的导体的第二尖端和环形输入，以及将第二尖端和环形输入耦合到信号参考的第二尖端和环形分流电阻器，第一和第二尖端和环形分流电阻器减小 第一和第二差分输入放大器的共模输入电阻，从而衰减第一和第二电话线共同的交叉耦合干扰。 电路和方法可以进一步适用于减少其他电话设备中的共模干扰的影响，包括但不限于单线电话设备。