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公开(公告)号：US5969567A
公开(公告)日：1999-10-19
申请号：US824442
申请日：1997-03-26
摘要： A circuit configuration for line adaptation and echo suppression includes a balance filter which is triggered by transmission signals and supplies output signals that are linked through a subtractor to a reception signal. An impedance adaptation filter is triggered by the reception signal and supplies an output signal that is linked through an adder to the transmission signal. An analog/digital converter converts analog reception signals into digital reception signals. A digital/analog converter converts digital transmission signals into analog transmission signals. The impedance adaptation filter processes digital signals and the balance filter processes analog signals.
摘要翻译： 用于线路适应和回波抑制的电路配置包括平衡滤波器，其由传输信号触发并且将通过减法器链接的输出信号提供给接收信号。 阻抗适配滤波器由接收信号触发，并将通过加法器链接的输出信号提供给发送信号。 模拟/数字转换器将模拟接收信号转换为数字接收信号。 数字/模拟转换器将数字传输信号转换为模拟传输信号。 阻抗适配滤波器处理数字信号，平衡滤波器处理模拟信号。
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公开(公告)号：US06635930B1
公开(公告)日：2003-10-21
申请号：US09806070
申请日：2001-04-30
申请人： Joerg Hauptmann , Alexander Kahl
发明人： Joerg Hauptmann , Alexander Kahl
IPC分类号： H01L2362
CPC分类号： H02H9/046
摘要： A protective circuit for limiting a voltage at a pad of an integrated circuit includes a threshold selector connected between the pad and ground. The input voltage to the threshold selector is the pad voltage. The threshold detector includes a first transistor where load path is connected to the pad. The central terminal of the first transistor is maintained at a threshold voltage derived from the pad voltage. A second transistor has its control terminal connected to a second terminal of the load path of the first transistor. The load path of this second transistor is connected between the pad and ground.
摘要翻译： 用于限制集成电路的焊盘处的电压的保护电路包括连接在焊盘和接地之间的阈值选择器。 阈值选择器的输入电压是焊盘电压。 阈值检测器包括第一晶体管，其中负载路径连接到焊盘。 第一晶体管的中心端子保持在从焊盘电压导出的阈值电压。 第二晶体管的控制端连接到第一晶体管的负载路径的第二端。 该第二晶体管的负载路径连接在焊盘和接地之间。
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3.发明授权Circuit arrangement for forming the termination of an analogous subscriber line 有权用于形成类似用户线路终端的电路装置公开(公告)号：US06950512B1
公开(公告)日：2005-09-27
申请号：US09807993
申请日：2000-01-05
申请人： Joerg Hauptmann , Alexander Kahl
发明人： Joerg Hauptmann , Alexander Kahl
CPC分类号： H04M3/005
摘要： The invention relates to a circuit arrangement for forming the termination of an analogous subscriber line which comprises a first connection and a second connection for connecting a twin-wire analogous subscriber line. Said first connection is linked with said second connection via a series connection of a first capacitor, at least one first adjustable resistor and one second capacitor. According to the invention, a direct current source is linked with the first point of linkage of the first capacitor and the first adjustable resistor. Said direct current source impresses a current which serves to adjust an operating point for voice and data transmission via the analogous subscriber line. The first and the second capacitor block equisignals on the subscriber line so that no direct current can flow via the analogous subscriber line.
摘要翻译： 本发明涉及一种用于形成类似用户线路的终端的电路装置，其包括用于连接双线类似用户线路的第一连接和第二连接。 所述第一连接通过第一电容器，至少一个第一可调电阻器和一个第二电容器的串联连接与所述第二连接件相连。 根据本发明，直流源与第一电容器和第一可调电阻器的第一连接点相连。 所述直流电源通过类似的用户线施加用于调整语音和数据传输的工作点的电流。 第一和第二电容器块在用户线路上等同，使得直流电流不能经由类似的用户线路流动。
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公开(公告)号：US20070018721A1
公开(公告)日：2007-01-25
申请号：US11474636
申请日：2006-06-26
IPC分类号： H03F1/36
摘要： Driver circuit for driving a transmit signal for a line comprising a signal amplifier which delivers a transmit signal, present at a signal input of the signal amplifier, amplified with a gain to a signal output, a line interface circuit which is connected between the signal output of the signal amplifier and the line, and comprising a hybrid circuit which is connected to the line interface circuit, wherein the hybrid circuit suppresses the transmit signal and couples a received signal received via the line to a signal input of the signal amplifier for the purpose of impedance synthesis.
摘要翻译： 驱动电路，用于驱动线路的发射信号，该线路包括信号放大器，该信号放大器传送出现在信号放大器的信号输入处的发射信号，其中增益被放大到信号输出;线路接口电路，连接在信号输出端 的信号放大器和线路，并且包括连接到线路接口电路的混合电路，其中混合电路抑制发射信号并将经由线路接收的接收信号耦合到信号放大器的信号输入端用于该目的 的阻抗合成。
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公开(公告)号：US06788784B1
公开(公告)日：2004-09-07
申请号：US09889115
申请日：2001-09-24
申请人： Alexander Kahl , Jorg Hauptmann
发明人： Alexander Kahl , Jorg Hauptmann
IPC分类号： H04M100
CPC分类号： H04M3/005 , H04M3/301 , H04M7/0096
摘要： A circuit arrangement for signaling in telecommunications networks has a first connection and a second connection for a first and a second conductor, respectively, in a transmission line. The first connection is connected to the first input of a rectifier, and the second connection is connected to the second input of said rectifier. The positive output and the negative output of the rectifier are connected to one another via a variable resistance. A third connection for a third conductor in the transmission line can be connected via the series circuit formed by a switch and a first diode to the positive output of the rectifier, and via the series circuit formed by the switch and a second diode to the negative output of the rectifier.
摘要翻译： 在电信网络中用于信令的电路装置分别具有用于传输线中的第一和第二导体的第一连接和第二连接。 第一连接件连接到整流器的第一输入端，第二连接端连接到整流器的第二输入端。 整流器的正输出和负输出通过可变电阻相互连接。 传输线中的第三导体的第三连接可以经由由开关和第一二极管形成的串联电路连接到整流器的正输出，并且经由由开关和第二二极管形成的串联电路连接到负极 输出整流器。
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公开(公告)号：US08164381B2
公开(公告)日：2012-04-24
申请号：US12499133
申请日：2009-07-08
申请人： Steffen Trautmann , Alexander Kahl
发明人： Steffen Trautmann , Alexander Kahl
CPC分类号： H03F1/0227
摘要： According to an embodiment, a circuit includes an amplifier and an open-loop control system. The amplifier has an output stage for amplifying a signal, a power supply for driving a supply voltage of the output stage to different voltage levels responsive to being modulated and a pulse width modulator for modulating the power supply responsive to a mask input. The open-loop control system includes a mask generator and a detector. The mask generator is configured to generate the mask input as a function of the envelope of the signal. The detector is configured to detect discontinuities in the mask input and compensate for the discontinuities.
摘要翻译： 根据实施例，电路包括放大器和开环控制系统。 放大器具有用于放大信号的输出级，用于将输出级的电源电压驱动到响应于调制的不同电压电平的电源和用于响应于掩模输入调制电源的脉宽调制器。 开环控制系统包括掩模发生器和检测器。 掩模发生器被配置为根据信号的包络产生掩模输入。 检测器被配置为检测掩模输入中的不连续性并补偿不连续性。
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公开(公告)号：US20120063589A1
公开(公告)日：2012-03-15
申请号：US13297319
申请日：2011-11-16
IPC分类号： H04M1/00
摘要： A driver circuit for driving a transmit signal for a line includes a signal amplifier configured to deliver a transmit signal, present at a signal input of the signal amplifier, amplified with a gain to a signal output, a line interface circuit connected between the signal output of the signal amplifier and the line, and a hybrid circuit connected to the line interface circuit, the hybrid circuit configured to suppress the transmit signal and couple a received signal received via the line to a signal input of the signal amplifier to provide impedance synthesis.
摘要翻译： 用于驱动线路的发射信号的驱动电路包括：信号放大器，被配置为传送出现在信号放大器的信号输入处的发射信号，其中增益被放大到信号输出;线路接口电路，连接在信号输出端 信号放大器和线路的混合电路以及连接到线路接口电路的混合电路，所述混合电路被配置为抑制发射信号并将经由线路接收的接收信号耦合到信号放大器的信号输入端以提供阻抗合成。
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公开(公告)号：US08077856B2
公开(公告)日：2011-12-13
申请号：US11474636
申请日：2006-06-26
IPC分类号： H04M1/00
摘要： Driver circuit for driving a transmit signal for a line comprising a signal amplifier which delivers a transmit signal, present at a signal input of the signal amplifier, amplified with a gain to a signal output, a line interface circuit which is connected between the signal output of the signal amplifier and the line, and comprising a hybrid circuit which is connected to the line interface circuit, wherein the hybrid circuit suppresses the transmit signal and couples a received signal received via the line to a signal input of the signal amplifier for the purpose of impedance synthesis.
摘要翻译： 驱动电路，用于驱动线路的发射信号，该线路包括信号放大器，该信号放大器传送出现在信号放大器的信号输入处的发射信号，其中增益被放大到信号输出;线路接口电路，连接在信号输出端 的信号放大器和线路，并且包括连接到线路接口电路的混合电路，其中混合电路抑制发射信号并将经由线路接收的接收信号耦合到信号放大器的信号输入端用于该目的 的阻抗合成。
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公开(公告)号：US20110006822A1
公开(公告)日：2011-01-13
申请号：US12499133
申请日：2009-07-08
申请人： Steffen Trautmann , Alexander Kahl
发明人： Steffen Trautmann , Alexander Kahl
IPC分类号： H03K3/00
CPC分类号： H03F1/0227
摘要： According to an embodiment, a circuit includes an amplifier and an open-loop control system. The amplifier has an output stage for amplifying a signal, a power supply for driving a supply voltage of the output stage to different voltage levels responsive to being modulated and a pulse width modulator for modulating the power supply responsive to a mask input. The open-loop control system includes a mask generator and a detector. The mask generator is configured to generate the mask input as a function of the envelope of the signal. The detector is configured to detect discontinuities in the mask input and compensate for the discontinuities.
摘要翻译： 根据实施例，电路包括放大器和开环控制系统。 放大器具有用于放大信号的输出级，用于将输出级的电源电压驱动到响应于调制的不同电压电平的电源和用于响应于掩模输入调制电源的脉宽调制器。 开环控制系统包括掩模发生器和检测器。 掩模发生器被配置为根据信号的包络产生掩模输入。 检测器被配置为检测掩模输入中的不连续性并补偿不连续性。
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公开(公告)号：US07729491B2
公开(公告)日：2010-06-01
申请号：US11057089
申请日：2005-02-11
申请人： Alexander Kahl , Peter Pessl , Sergio Walter
发明人： Alexander Kahl , Peter Pessl , Sergio Walter
CPC分类号： H03G5/22 , H03G1/0088 , H04M11/062
摘要： A method and a device for amplifying a reception signal are provided, involving the adjustment of a gain by which the reception signal is amplified, in particular as a function of a signal level of the reception signal. For example, lowpass filtering with a variable cutoff frequency is used to filter out a gain-dependent frequency range of the reception signal, which may especially contain an undesirable echo signal. Such a method and such a device are suitable in particular for the reception of ADSL signals in a central office.
摘要翻译： 提供了一种用于放大接收信号的方法和装置，其特征在于，所述方法和装置涉及对接收信号进行放大的增益的调整，特别是作为接收信号的信号电平的函数。 例如，使用具有可变截止频率的低通滤波来滤除接收信号的增益相关频率范围，其可以特别地包含不期望的回波信号。 这种方法和这种装置特别适用于在中心局接收ADSL信号。
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