专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06628783B1 Filter arrangement applicable to ADSL splitters 失效
标题翻译：滤波器布置适用于ADSL分离器
公开(公告)号：US06628783B1
公开(公告)日：2003-09-30
申请号：US09326544
申请日：1999-06-07
申请人： Geert Arthur Edith Van Wonterghem
发明人： Geert Arthur Edith Van Wonterghem
IPC分类号： H04M176
CPC分类号： H03H11/1213
摘要： A low-pass filter arrangement associated a clamping circuit for limiting unwanted transient signals to be transmitted through the filter. Mainly the variations (dI/dt) of the current flowing through the filter are eliminated. The filter may form part of a splitter used in an ADSL system to separate low frequency POTS signals from high frequency ADSL signals simultaneously transmitted over a same copper twisted-pair transmission line. The filter comprises the series connection of a coil and the main path of a transistor of which the gate terminal is connected to the opposite end of the coil. In an ADSL system, a classical 7th order low-pass filter may advantageously be replaced by a 3rd order filter arrangement.
摘要翻译：一个低通滤波器装置，用于限制要通过滤波器传输的不需要的瞬态信号的钳位电路。主要是消除了流经过滤器的电流的变化（dI / dt）。滤波器可以形成用于ADSL系统中的分离器的一部分，以将低频POTS信号与同一铜双绞线传输线同时传输的高频ADSL信号分离。滤波器包括线圈的串联连接和栅极端子连接到线圈的相对端的晶体管的主路径。在ADSL系统中，经典的七阶低通滤波器可以有利地被三阶滤波器布置代替。

2. 发明授权

US06834109B1 Method and apparatus for mitigation of disturbers in communication systems 失效
标题翻译：用于减轻通信系统中干扰器的方法和装置
公开(公告)号：US06834109B1
公开(公告)日：2004-12-21
申请号：US09710610
申请日：2000-11-10
申请人： Thomas E. Paré, Jr. , Michail Tsatsanis , Ioannis Kanellakopoulos , Mark Alan Erickson , Cecilia Gabriela Galarza , James W. Waite , Daniel Joseph Hernandez , Sunil C. Shah , Ming Gu , Norman Man Leung Yuen , Heberly Rosario , Di Lin , Fernando Lopez-de-Victoria
发明人： Thomas E. Paré, Jr. , Michail Tsatsanis , Ioannis Kanellakopoulos , Mark Alan Erickson , Cecilia Gabriela Galarza , James W. Waite , Daniel Joseph Hernandez , Sunil C. Shah , Ming Gu , Norman Man Leung Yuen , Heberly Rosario , Di Lin , Fernando Lopez-de-Victoria
IPC分类号： H04M176
CPC分类号： H04L41/046 , H04B3/32 , H04L1/20 , H04L25/0204 , H04L25/03305 , H04L27/2608 , H04L41/06 , H04L41/142 , H04L41/145 , H04L2025/03414
摘要： The present invention includes a method and system for compensating for cross-talk interference in communication systems. The method includes estimation of the interfering signals. Further, the method includes performing a compensation operation on at least one interfering signal.
摘要翻译：本发明包括用于补偿通信系统中的串扰干扰的方法和系统。该方法包括干扰信号的估计。此外，该方法包括对至少一个干扰信号执行补偿操作。

3. 发明授权

US06760847B1 Method for performing subscriber loop disturber recognition by comparing measured sample power spectral densities with a set of known power spectral densities 失效
标题翻译：通过将测量的样本功率谱密度与已知功率谱密度的集合进行比较来执行用户环路干扰识别的方法
公开(公告)号：US06760847B1
公开(公告)日：2004-07-06
申请号：US09548746
申请日：2000-04-13
申请人： Gin Liu , Liqian Yao , Michael A. Campbell , Gary T. Stone
发明人： Gin Liu , Liqian Yao , Michael A. Campbell , Gary T. Stone
IPC分类号： H04M176
CPC分类号： H04M3/30 , H04L1/0002 , H04L1/20 , H04M3/18 , H04M3/34
摘要： To identify interference from other data carrying subscriber loops (i.e., from loop disturbers), a power spectral density sample may be obtained from the subscriber loop under consideration based on at least one measurement while the loop is not transmitting data. The sample power spectral density may then be correlated with each one of a set of known power spectral densities. Each known power spectral density represents a power spectral density in a loop which is not transmitting data in the presence of one of (i) no subscriber loop disturbers, (ii) a particular subscriber loop disturber, and (iii) particular subscriber loop disturbers. Based on the correlations, subscriber loop disturbers may be recognized.
摘要翻译：为了识别来自携带用户环路（即，环路干扰器）的其他数据的干扰，可以在循环不发送数据的情况下基于至少一次测量从所考虑的用户环路获得功率谱密度样本。然后可以将样本功率谱密度与一组已知功率谱密度中的每一个相关联。每个已知的功率谱密度表示循环中的功率谱密度，其不存在以下（i）没有用户环路干扰器，（ii）特定用户环路干扰器和（iii）特定用户环路干扰器之一）的情况下传输数据。基于相关性，可以识别用户环路干扰器。

4. 发明授权

US06647114B1 Telephone line interface circuit with virtual impedance 有权
标题翻译：具有虚拟阻抗的电话线路接口电路
公开(公告)号：US06647114B1
公开(公告)日：2003-11-11
申请号：US09312218
申请日：1999-05-14
申请人： Frank Sacca
发明人： Frank Sacca
IPC分类号： H04M176
CPC分类号： H04M1/76
摘要： Using a telephone line interface circuit with negative feedback, it is possible to control the current through the circuit so that the ratio of the voltage applied across the circuit to the current is the desired value of impedance. Voltage feedback from the line controls the current through the circuit, thereby reflecting a “virtual” impedance to the telephone line. By adequately filtering the voltage feedback, the reflected impedance to the line can be adjusted to any desired impedance function, without using the actual values of the impedance. The circuit is thus ideally suited for applications in which the impedance values need to be varied depending upon the characteristics of the telephone system.
摘要翻译：使用具有负反馈的电话线接口电路，可以控制通过电路的电流，使得电路上施加的电压与电流的比值是期望的阻抗值。来自线路的电压反馈控制电流通过电路，从而反映电话线路的“虚拟”阻抗。通过充分过滤电压反馈，可以将线路的反射阻抗调整到任何所需的阻抗函数，而不使用阻抗的实际值。因此，该电路非常适用于阻抗值需要根据电话系统的特性而变化的应用。

5. 发明授权

US06510225B1 Ultrasonically-calibrated fast-start echo canceller for cellular and pcs telephone car kits 有权
标题翻译：超声波校准的快速启动回波消除器，用于蜂窝和个人电话车载套件
公开(公告)号：US06510225B1
公开(公告)日：2003-01-21
申请号：US09250973
申请日：1999-02-16
申请人： Dan Robertson , Lowell Campbell
发明人： Dan Robertson , Lowell Campbell
IPC分类号： H04M176
CPC分类号： H04B3/238 , H04M9/082
摘要： The present disclosure describes an ultrasonically-calibrated fast-start adaptive echo canceller system. The system consists of at least one ultrasonic transducer for transmitting ultrasound signal and at least one ultrasonic receiver for receiving reflected ultrasound echo. The system also includes an echo pulse counter that operates constantly when the phone is on. The counter processes the reflected ultrasound echo from the ultrasonic receiver to determine optimum sets of ultrasonic delay and attenuation coefficients. A fast-start adaptive controller adaptively controls an algorithm stored in a random access memory to correlate sets of audio-frequency coefficients for transversal filter with predetermined sets of ultrasonic coefficients by using an ultrasound to audio-frequency conversion table. The resultant sets of audio-frequency coefficients are held on a stack.
摘要翻译：本公开描述了超声校准的快速启动自适应回波消除器系统。该系统由用于发送超声信号的至少一个超声波换能器和用于接收反射超声回波的至少一个超声波接收器组成。该系统还包括一个回波脉冲计数器，当手机打开时不断运行。计数器处理来自超声波接收器的反射超声回波，以确定超声波延迟和衰减系数的最佳集合。快速启动自适应控制器自适应地控制存储在随机存取存储器中的算法，以便通过使用超声波到音频 - 频率转换表将用于横向滤波器的音频 - 频率系数集合与预定的超声波系数组相关联。所得到的音频系数组被保持在堆栈上。

6. 发明授权

US06285755B1 Transmission system and transmission apparatus 失效
标题翻译：传输系统和传输设备
公开(公告)号：US06285755B1
公开(公告)日：2001-09-04
申请号：US09159378
申请日：1998-09-23
申请人： Kimio Watanabe
发明人： Kimio Watanabe
IPC分类号： H04M176
CPC分类号： H04M1/723
摘要： A transmission system comprises a plurality of transmission apparatuses which use a single channel commonly. Each transmission apparatus comprises switches for connecting and disconnecting transmission paths with adjacent transmission apparatuses, a line signaling-signal monitoring and detecting portion, and a network dividing logic portion which opens and closes the switches based on an output of the line signaling-signal monitoring and detecting portion. The network dividing logic portion closes switches of transmission paths between transmission apparatuses which perform a telephone conversation and opens the other switches.
摘要翻译：传输系统包括通常使用单个信道的多个传输设备。每个发送装置包括用于连接和断开与相邻发送装置的传输路径的交换机，线路信令信号监视和检测部分，以及基于线路信令信号监视的输出来打开和关闭交换机的网络分割逻辑部分，以及检测部。网络分割逻辑部分闭合执行电话交谈的传输设备之间的传输路径的开关，并打开其他交换机。

7. 发明授权

US06473507B1 Apparatus and method for isolating transients associated with a digital subscriber line 有权
标题翻译：用于隔离与数字用户线相关的瞬变的装置和方法
公开(公告)号：US06473507B1
公开(公告)日：2002-10-29
申请号：US09692996
申请日：2000-10-20
申请人： Christopher Q. Eckert
发明人： Christopher Q. Eckert
IPC分类号： H04M176
CPC分类号： H04M1/74
摘要： A communication apparatus includes circuitry operable to facilitate communication over a digital subscriber line. The apparatus also includes a filter operable to be coupled between the circuitry and the digital subscriber line. The filter has a corner frequency and is operable to attenuate transients associated with the circuitry when the apparatus is in use. The filter is tuned to an impedance of the circuitry.
摘要翻译：通信装置包括可操作以便于通过数字用户线进行通信的电路。该装置还包括可操作以耦合在电路和数字用户线路之间的滤波器。滤波器具有拐角频率，并且可操作以在装置使用时衰减与电路相关联的瞬变。滤波器被调谐到电路的阻抗。

8. 发明授权

US06459790B1 System and method for selective filter isolation 有权
标题翻译：用于选择性过滤隔离的系统和方法
公开(公告)号：US06459790B1
公开(公告)日：2002-10-01
申请号：US09385223
申请日：1999-08-27
申请人： Christopher Q. Eckert , John C. Honeycutt
发明人： Christopher Q. Eckert , John C. Honeycutt
IPC分类号： H04M176
CPC分类号： H04M11/062
摘要： In a system including a plurality of telephones coupled to an asymmetric digital subscriber line, a circuit operable to facilitate communication using the asymmetric digital subscriber line includes a filter having a corner frequency and being operable to be coupled between one of the plurality of telephones and the asymmetric digital subscriber line. The filter is also operable to attenuate transients associated with the telephone operating in an off-hook state. The circuit also includes a switch coupled to the filter. The switch is operable to effect a change in the corner frequency of the associated filter depending on whether the telephone coupled to the filter is operating in an on-hook or an off-hook state, the change in the corner frequency operating to attenuate parasitic interference associated with telephones in an on-hook state.
摘要翻译：在包括耦合到非对称数字用户线路的多个电话的系统中，可操作以促进使用非对称数字用户线的通信的电路包括具有转角频率并且可操作地耦合在多个电话中的一个和非对称数字用户线。滤波器还可操作以衰减与摘机状态下操作的电话相关联的瞬变。电路还包括耦合到滤波器的开关。该开关可操作以根据耦合到滤波器的电话是工作在挂机状态还是摘机状态来实现相关滤波器的转角频率的改变，转角频率的变化用于衰减寄生干扰与处于挂机状态的电话相关联。

9. 发明授权

US06418220B2 Extended feedback circuit employing capacitive coupling and sampled data filters 有权
标题翻译：采用电容耦合和采样数据滤波器的扩展反馈电路
公开(公告)号：US06418220B2
公开(公告)日：2002-07-09
申请号：US09835741
申请日：2001-04-16
申请人： Jonathan Herman Fischer , Donald Raymond Laturell , Keith Eugene Hollenbach , Steven Brooke Witmer
发明人： Jonathan Herman Fischer , Donald Raymond Laturell , Keith Eugene Hollenbach , Steven Brooke Witmer
IPC分类号： H04M176
CPC分类号： H04M3/005 , H04M1/745
摘要： A network interface circuit employing differentially driven capacitive couplings across a high voltage isolation boundary and in which a &Sgr;/&Dgr; CODEC is positioned on the line side of the high voltage interface. In this manner, only four wires cross the high voltage boundary, namely differential pairs for transmit data and receive data. The transfer functions for setting AC and DC parameters, such as impedance matching, are provided by digital filters. Further, with the CODEC on the line side of the high voltage isolation interface, the data which crosses the interface is modulated at the &Sgr;/&Dgr; data rate and, thus, capacitive coupling can be used across the high voltage isolation boundary without the loss of DC data.
摘要翻译：一种网络接口电路，其跨越高电压隔离边界采用差动驱动的电容耦合，其中SIGMA / DELTA编解码器位于高压接口的线路侧。以这种方式，只有四条电线穿过高压边界，即发送数据和接收数据的差分对。用于设置交流和直流参数（如阻抗匹配）的传递功能由数字滤波器提供。此外，利用高压隔离接口线路侧的编解码器，跨越接口的数据以SIGMA / DELTA数据速率进行调制，因此可以在高电压隔离边界上使用电容耦合，而不会损失 DC数据。

10. 发明授权

US06343069B1 Apparatus and method for automatic and adaptive adjustment of build-out capacitance to balance a hybrid 失效
标题翻译：用于自动和自适应调整积分电容以平衡混合的装置和方法
公开(公告)号：US06343069B1
公开(公告)日：2002-01-29
申请号：US08923290
申请日：1997-09-04
申请人： Winston M. Gadsby
发明人： Winston M. Gadsby
IPC分类号： H04M176
CPC分类号： H04M1/76
摘要： An apparatus and method for automatically selecting an amount of build-out capacitance to be applied to a hybrid in a telecommunications circuit to balance or substantially balance the hybrid. The apparatus measures voltages of signals being transmitted on telecommunication lines to which the hybrid is coupled, and based on the measured voltages, automatically selects any number of a plurality of capacitive elements to be coupled to the balance port of the hybrid as the build-out capacitance. The apparatus is further controllable to operate in a manual mode in which the capacitive elements to be coupled to the hybrid are manually selected by switches.
摘要翻译：一种用于自动选择要施加到电信电路中的混合电路的建立电容量以平衡或基本平衡混合电路的装置和方法。该装置测量在混合耦合到的电信线路上传输的信号的电压，并且基于所测量的电压，自动选择要耦合到混合器的平衡端口的多个电容性元件的任何数量作为构建电容。该装置进一步可控制以在手动模式下操作，其中要耦合到混合动力的电容元件由开关手动选择。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式