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公开(公告)号：US06587544B2
公开(公告)日：2003-07-01
申请号：US09977727
申请日：2001-10-15
IPC分类号： H04M124
CPC分类号： G01R27/02 , H04Q11/0421 , H04Q2213/13003 , H04Q2213/13034 , H04Q2213/1308 , H04Q2213/1313 , H04Q2213/1316 , H04Q2213/13178 , H04Q2213/1319 , H04Q2213/13306 , H04Q2213/1332
摘要： Method for measuring a load impedance (ZL) of a load circuit which is connected to an SLIC circuit (6) of an analog terminal connection of a terminal device, having the following steps: specifically a digital toll signal (x1) is generated by means of a Codec circuit (13) connected to the SLIC circuit (6), said toll signal (x1) being converted into an analog toll signal; the analog toll signal is output by the SLIC circuit (6) to the load circuit; an analog voltage which is brought about at the terminal connection (4,5) of the terminal device of the SLIC circuit (6) via the analog toll signal is sensed; the digital toll signal (x1) is filtered by means of an adaptive filter (39) which is provided in the Codec circuit (13) and has adjustable filter coefficients (g1, g2) for generating a filtered digital comparison signal (yv) which is converted into an analog comparison voltage (Uv); the filter coefficients (g1, g2) of the adaptive filter (39) are adjusted until the analog comparison voltage (Uv) and the analog voltage (UL), brought about by the analog toll signal, at the terminal connection (4, 5) of the terminal device are the same; the complex load impedance (ZL) of the load circuit is calculated as a function of the set filter coefficients (g1, g2)
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2.发明授权Method for reducing a computational complexity in non-linear filter arrangements as well as corresponding filter arrangements 有权用于降低非线性滤波器布置中的计算复杂度的方法以及相应的滤波器布置公开(公告)号：US07813496B2
公开(公告)日：2010-10-12
申请号：US11133119
申请日：2005-05-19
申请人： Gernot Kubin , Gerhard Paoli , David Schwingshackl
发明人： Gernot Kubin , Gerhard Paoli , David Schwingshackl
IPC分类号： H04M9/08
CPC分类号： H03H17/0223 , H03H17/0261 , H03H17/0275 , H03H17/0685
摘要： A method for creating a form of a non-linear filter suitable for reducing a computational complexity is proposed. The filter is resolved into polyphase components in such a way that the polyphase components can be interchanged with a conversion of the sampling rate of a signal to be sent to the filter or of a signal to be emitted by the filter. Corresponding filters and filter arrangements are also proposed. In this way, a computational complexity for calculating the signal to be emitted by the filter can be significantly simplified. The invention can be used in echo compensation.
摘要翻译： 提出了一种用于创建适合于降低计算复杂度的非线性滤波器形式的方法。 滤波器被解析为多相分量，使得多相分量可以与要发送到滤波器的信号的采样速率或由滤波器发射的信号的变换相互交换。 还提出了相应的滤波器和滤波器布置。 以这种方式，可以显着简化用于计算由滤波器发射的信号的计算复杂度。 本发明可用于回波补偿。
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4.发明申请Method and device for transmitting speech signals via a data telecommunications network 审中-公开用于经由数据电信网络发送语音信号的方法和装置公开(公告)号：US20070184808A1
公开(公告)日：2007-08-09
申请号：US10884800
申请日：2004-07-02
CPC分类号： H04M7/0069 , H04M1/253 , H04M7/006
摘要： In the case of a device for transmission of telephone signals via a data telecommunications network (2) the analogue signals of a telephone terminal are converted to digital signals for transmission via the data telecommunications network (2) and/or, vice versa, digital signals from the data telecommunications network (2) are converted to analogue signals for transmission via the telephone terminal. In order to monitor the operation of the device, advantageously digital signals arising within the device are analyzed. According to the invention a digital signal is acquired within the device and the characteristics of this, which characterize the amplitude and/or the frequency response of the acquired digital signal, are determined. The determined characteristics are sent out via the data telecommunications network (2). In this way the function of such conversion devices can also be monitored over a greater distance via the data telecommunications network (2) and signals arising therein can be analyzed. Advantageously for this purpose the acquired digital signal is filtered by means of a programmable filter (16) and integrated after absolute value generation or squaring. Various measured quantities, such as for example the effective value of the acquired digital signal, can be evaluated based on the frequency response adjusted with the filter (16) and on the result of the integration.
摘要翻译： 在用于经由数据电信网络（2）传输电话信号的设备的情况下，电话终端的模拟信号被转换成数字信号以经由数据电信网络（2）和/或反之亦然，数字信号 从数据电信网络（2）转换成模拟信号以经由电话终端进行传输。 为了监视设备的操作，有利于分析在设备内产生的数字信号。 根据本发明，在设备内获取数字信号，并且确定表征所获取的数字信号的幅度和/或频率响应的特性。 确定的特性通过数据电信网络（2）发出。 以这种方式，也可以经由数据电信网络（2）在更大的距离上监视这种转换装置的功能，并且可以分析其中产生的信号。 有利的是，所获取的数字信号通过可编程滤波器（16）进行滤波，并在绝对值产生或平方之后被积分。 可以基于使用滤波器（16）调整的频率响应和积分的结果来评估各种测量量，例如所获取的数字信号的有效值。
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公开(公告)号：US20050114427A1
公开(公告)日：2005-05-26
申请号：US10977711
申请日：2004-10-29
CPC分类号： H04B14/04 , H04L25/0278 , H04L25/028
摘要： Transmission apparatus with variable impedance matching The invention provides a transmission apparatus (100) for transmission of electrical signals between a line driver (205), which is connected to a transmission line (201), and a switching center (301), having an analog feedback device (101) for coarse setting of a line voltage level (210) on the transmission line (201), and a digital feedback device (102), which is coupled to the analog feedback device (101) and has a feedback filter device (118), designed such that a filter input signal (404) can be converted to a filter output signal (405) at a rate which is lower than the sampling rate (fa) of an analog/digital converter (104).
摘要翻译： 具有可变阻抗匹配的发送装置本发明提供一种用于在连接到传输线路（201）的线路驱动器（205）和具有模拟量的交换中心（301）之间传输电信号的传输设备（100） 用于在传输线路（201）上粗线设置线路电压电平（210）的反馈装置（101）和数字反馈装置（102），其耦合到模拟反馈装置（101）并具有反馈滤波装置 （118），被设计成使得滤波器输入信号（404）可以以低于模拟/数字信号的采样率（f SUB）的速率转换成滤波器输出信号（405） 数字转换器（104）。
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公开(公告)号：US08339145B2
公开(公告)日：2012-12-25
申请号：US12563652
申请日：2009-09-21
CPC分类号： H04M3/30 , H04M2201/16
摘要： A signal generator is disclosed that generates a test signal to be applied to a first and second wire of a subscriber line. The signal generator is configured to generate the test signal at the first and second test signal outputs in a first time section such that a first potential at the first test signal output is changed from a first value to a second value and a second potential at the second test signal output is maintained constant at least during the change of the first potential. The signal generator is further configured to generate the test signal during a second time section such that the first potential at the first output and the second potential at the second output are oscillating with a predetermined frequency.
摘要翻译： 公开了一种信号发生器，其产生要施加到用户线路的第一和第二线路的测试信号。 信号发生器被配置为在第一时间段中在第一和第二测试信号输出处产生测试信号，使得第一测试信号输出处的第一电位从第一值变为第二值，并且在第 至少在第一电位的变化期间，第二测试信号输出保持恒定。 信号发生器还被配置为在第二时间段期间产生测试信号，使得第一输出处的第一电位和第二输出端的第二电位以预定频率振荡。
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公开(公告)号：US20110025343A1
公开(公告)日：2011-02-03
申请号：US12563652
申请日：2009-09-21
CPC分类号： H04M3/30 , H04M2201/16
摘要： Embodiments related to line testing are described and depicted.
摘要翻译： 描述和描绘与线路测试相关的实施例。
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公开(公告)号：US07496150B2
公开(公告)日：2009-02-24
申请号：US10977711
申请日：2004-10-29
IPC分类号： H04M7/04
CPC分类号： H04B14/04 , H04L25/0278 , H04L25/028
摘要： The invention provides a transmission apparatus (100) for transmission of electrical signals between a line driver (205), which is connected to a transmission line (201), and a switching center (301), having an analog feedback device (101) for coarse setting of a line voltage level (210) on the transmission line (201), and a digital feedback device (102), which is coupled to the analog feedback device (101) and has a feedback filter device (118), designed such that a filter input signal (404) can be converted to a filter output signal (405) at a rate which is lower than the sampling rate (fa) of an analog/digital converter (104).
摘要翻译： 本发明提供了一种用于在连接到传输线（201）的线路驱动器（205）和交换中心（301）之间传输电信号的发送设备（100），该交换中心具有模拟反馈设备（101） 在传输线（201）上的线路电压电平（210）的粗略设置以及耦合到模拟反馈装置（101）并具有反馈滤波器装置（118）的数字反馈装置（102） 滤波器输入信号（404）可以以比模拟/数字转换器（104）的采样率（fa）低的速率被转换成滤波器输出信号（405）。
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公开(公告)号：US07164708B1
公开(公告)日：2007-01-16
申请号：US10031034
申请日：2000-07-12
申请人： Joerg Hauptmann , Christian Schranz , Bernhard Zojer , Peter Pessl , David Schwingshackl , Herbert Zoler
发明人： Joerg Hauptmann , Christian Schranz , Bernhard Zojer , Peter Pessl , David Schwingshackl , Herbert Zoler
IPC分类号： H04B1/38
CPC分类号： H04L27/0002 , H04M11/062
摘要： In the line terminating device, which is provided for transmitting and receiving narrowband low-frequency voice signals and broadband data signals at a higher frequency, the analog reception path is subdivided into two separate analog paths (32, 33) for voice and data using a balance filter (49), which is used for data signal echo cancellation. In the transmission direction, the voice signal path and the data signal path are separated in the digital part by means of digital filters (43, 45). The invention is used for voice and data signal separation in xDSL methods, for example, ADSL.Lite.
摘要翻译： 在用于以更高频率发送和接收窄带低频语音信号和宽带数据信号的线路终端设备中，模拟接收路径被细分为两个单独的模拟路径（32,33），用于语音和数据，使用 平衡滤波器（49），用于数据信号回波消除。 在传输方向上，语音信号路径和数据信号路径通过数字滤波器（43,45）在数字部分中分离。 本发明用于xDSL方法中的语音和数据信号分离，例如ADSL.Lite。
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