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1.发明授权Subscriber line interface circuit which automatically adjusts the signal headroom on a telephone line and a method of doing the same 失效用户线路接口电路，其自动调节电话线路上的信号余量，并进行相同的方法
公开(公告)号：US06119090A
公开(公告)日：2000-09-12
申请号：US89499
申请日：1998-06-03
CPC分类号： H04M19/005
摘要： In a subscriber line interface circuit connected to a two-wire telephone line (A and B lines) for transmitting AC signals, one of the wires (e.g., the A line) is set to a DC voltage lower (i.e., more negative) than a first DC voltage (GND), while the second wire (e.g., the B wire) is set to a DC voltage lower than the DC voltage of the first wire, but higher than a second DC voltage (VREG). A first voltage generator is provided for setting a first threshold voltage (VTHA) between the first DC voltage (GND) and the DC voltage of the first wire. A second voltage generator is provided for setting a second threshold voltage (VTHB) between the second DC voltage (VREG) and the D voltage for the second wire. The first and second threshold voltages are utilized for transmission and reception of AC signals on the respective A and B wires. As long as the instantaneous value (VA) of the signal on the first wire (A) equals the first threshold voltage (VTHA) and/or the instantaneous value (VB) of the signal on the second wire (B) equals the second threshold voltage (VTHB), the subscriber line interface circuit automatically adjusts the signal headroom to the actual amplitude of the AC signals by controlling the voltage difference (VA) between the first DC voltage (GND) and the DC voltage of the first wire (A) and/or the voltage difference (VB) between the DC voltage of the second wire (B) and the second DC voltage (VREG).
摘要翻译： 在连接到用于发送AC信号的双线电话线（A和B线）的用户线接口电路中，其中一条线（例如，A线）被设置为比直流电压低（即更负） 第一直流电压（GND），而第二线（例如，B线）被设置为低于第一线的直流电压但高于第二直流电压（VREG）的直流电压。 提供第一电压发生器，用于设置第一直流电压（GND）和第一导线的直流电压之间的第一阈值电压（VTHA）。 提供第二电压发生器，用于设置第二线路的第二直流电压（VREG）和D电压之间的第二阈值电压（VTHB）。 第一和第二阈值电压用于在相应的A和B电线上发送和接收AC信号。 只要第一线（A）上的信号的瞬时值（VA）等于第二线（B）上的信号的第一阈值电压（VTHA）和/或瞬时值（VB）等于第二阈值 电压（VTHB），用户线路接口电路通过控制第一直流电压（GND）和第一线（A）的直流电压之间的电压差（VA）自动将信号余量调整到交流信号的实际振幅， 和/或第二导线（B）的直流电压与第二直流电压（VREG）之间的电压差（VB）。
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公开(公告)号：US06195429B1
公开(公告)日：2001-02-27
申请号：US09053727
申请日：1998-04-02
IPC分类号： H04M124
CPC分类号： G01R19/252 , H04B3/48
摘要： In a subscriber line interface circuit connected to a telephone line having a high potential wire and a low potential wire, an arrangement for generating a signal for determining the line voltage comprises means (7, 10, 11) for alternately charging a capacitor (6), by means of a first DC current, to a first voltage, and discharging the capacitor (6), by means of a second DC current, to a second voltage. Hereby, a sawtooth wave having an amplitude corresponding to the difference between the first and second voltages is produced. This sawtooth wave is converted to a pulse train related to the line voltage, from which the line voltage can be determined.
摘要翻译： 在连接到具有高电位线和低电位线的电话线的用户线接口电路中，用于产生用于确定线路电压的信号的装置包括用于交替地对电容器（6）充电的装置（7,10,11） 通过第一直流电流转换成第一电压，并且通过第二直流电流将电容器（6）放电到第二电压。 因此，产生具有对应于第一和第二电压之间的差的振幅的锯齿波。 该锯齿波被转换为与线路电压相关的脉冲串，从该电压可以确定线路电压。
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公开(公告)号：US06542605B1
公开(公告)日：2003-04-01
申请号：US09323604
申请日：1999-06-01
IPC分类号： H04M100
CPC分类号： H04M19/001 , H04M19/005
摘要： Line circuits can be supplied with a first voltage or a second voltage of a lower absolute value. At least the second voltage is variable. The line voltages of at least active line circuits are measured, and possible values for the second voltage are prognosticated. It is determined which line circuits can be supplied with the respective possible value, and the power consumption of those line circuits is calculated using each possible value. For the line circuits which cannot be so supplied, the power consumption is calculated using the first voltage. For each possible value prognosticated for the second voltage, the total power consumptions are summed, and the value that gives the lowest total power consumption is selected as the second voltage. The line circuits are then supplied with the first voltage or the selected second voltage.
摘要翻译： 线路电路可以被提供具有较低绝对值的第一电压或第二电压。 至少第二电压是可变的。 测量至少有源线路电路的线路电压，并且预测第二电压的可能值。 确定哪些线路电路可以被提供各自的可能值，并且使用每个可能的值来计算那些线路电路的功耗。 对于不能提供的线路电路，使用第一电压计算功耗。 对于为第二电压预测的每个可能的值，总功耗被相加，并且给出最低总功耗的值被选择为第二电压。 线路电路然后被提供第一电压或所选择的第二电压。
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公开(公告)号：US06239648B1
公开(公告)日：2001-05-29
申请号：US08966414
申请日：1997-11-07
IPC分类号： H04M1900
CPC分类号： H04M19/005
摘要： The present invention relates to a method and a device for diversion of power in an electric circuit (1), e.g. a subscriber circuit with a balanced two-wire transmission, comprising a user (3) with a variable voltage requirement, which is controlled by the supply characteristic of the device and the resistance in the two-wire transmission (A,B,L). The voltage requirement of the user is fed back via a reference signal (UREF) to an input of a voltage-regulating circuit (2), which supplies the user with a drive voltage (VBAT2) adapted to the value of the reference signal. The voltage-regulating circuit (2) is fed with a supply voltage (VBAT) and a regulator voltage (V0) is defined as the difference between the drive voltage (VBAT2) and the supply voltage (VBAT). Parallel with the voltage-regulating circuit, an external device (8), e.g. a resistance, is connected in order to divert an undesired power generation in the voltage-regulating circuit through the whole or part of the supply current of the user being led to the external resistance and there the whole or part of the power generation is emitted.
摘要翻译： 本发明涉及一种用于在电路（1）中转换功率的方法和装置，例如， 具有平衡双线传输的用户电路，包括由设备的供电特性和双线传输（A，B，L）中的电阻控制的具有可变电压要求的用户（3）。 用户的电压要求通过参考信号（UREF）反馈到电压调节电路（2）的输入，电压调节电路（2）的输入为用户提供适合于参考信号值的驱动电压（VBAT2）。 电压调节电路（2）馈送有电源电压（VBAT），调节器电压（V0）定义为驱动电压（VBAT2）和电源电压（VBAT）之间的差值。 与电压调节电路并联，外部装置（8） 电阻被连接以便通过被引导到外部电阻的用户的整个或部分供电电流来转移电压调节电路中的不期望的发电，并且发射全部或部分发电。
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5.发明授权Method and an arrangement for controlling the operating mode of a subscriber line interface circuit 失效用于控制用户线接口电路的操作模式的方法和装置
公开(公告)号：US6148076A
公开(公告)日：2000-11-14
申请号：US887458
申请日：1997-07-02
摘要： In a method and an arrangement for controlling the operating mode of a subscriber line interface circuit by mode control signals from a control circuit which is connected to the subscriber line interface circuit, the subscriber line interface circuit includes at least one latch which is interconnected between the control circuit and the subscriber line interface circuit. The latch is adapted to latch the mode control signals received from the control circuit in response to latch enable signals received from the control circuit, and to apply those latched mode control signals to the subscriber line interface circuit to control its operating mode.
摘要翻译： 在用于通过连接到用户线接口电路的控制电路的模式控制信号来控制用户线接口电路的操作模式的方法和装置中，用户线接口电路包括至少一个锁存器， 控制电路和用户线接口电路。 锁存器适于锁存从控制电路接收的模式控制信号，以响应于从控制电路接收到的锁存使能信号，并将这些锁存模式控制信号施加到用户线接口电路以控制其工作模式。
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6.发明授权Method of generating a ring signal in a subscriber line interface circuit technical field 有权在用户线接口电路技术领域生成振铃信号的方法公开(公告)号：US06973181B2
公开(公告)日：2005-12-06
申请号：US10323542
申请日：2002-12-18
申请人： Anders Emericks , Henrik Hellberg
发明人： Anders Emericks , Henrik Hellberg
摘要： In a method and a device for controlling the magnitude of the generated ring signal in a the Subscriber Line Interface Circuit (SLIC) the voltage of the A and B lines to the subscriber from the SLIC is compared to a reference voltage. The device is arranged to control the magnitude of the generated ring signal voltage in response to the outcome of the comparison. In particular, the device is arranged to control the ring signal voltage so that the ring signal voltage is reduced if the voltage on the A or B line exceeds the reference voltage. Also, the reference voltage is preferably chosen so that there is no risk for saturation of the final stages. The reference voltage is preferably selected to have a value being related to the value of the negative supply voltage.
摘要翻译： 在用户线路接口电路（SLIC）中用于控制所生成的振铃信号的大小的方法和装置中，将来自SLIC的用户的A和B线的电压与参考电压进行比较。 该装置被布置成响应于比较的结果来控制所产生的环形信号电压的幅度。 特别地，该装置被布置成控制环形信号电压，使得如果A或B线上的电压超过参考电压，则环形信号电压降低。 此外，优选地选择参考电压，使得不存在最终级的饱和的风险。 参考电压优选地选择为具有与负电源电压的值相关的值。
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公开(公告)号：US06498849B1
公开(公告)日：2002-12-24
申请号：US09678676
申请日：2000-10-04
申请人： Henrik Hellberg , Anders Emericks
发明人： Henrik Hellberg , Anders Emericks
IPC分类号： H04M100
CPC分类号： H04M19/005
摘要： To reduce power losses in a SLIC comprising first and second current amplifiers supplying line current to respective wires of a two-wire transmission line to a load, a line current detector detects line currents below a threshold value. For line currents above the threshold value, the second amplifier is supplied from a first battery with a substantially constant voltage. A voltage regulator is connected with its output terminal to the second amplifier, with its current supply terminal to a second battery of higher absolute voltage than said first battery, and with its input terminal to the detector. In response to line currents below said threshold value, the detector outputs control signals proportional to the detected line currents to control the output terminal of the voltage regulator to supply the second amplifier as well as the load from the second battery.
摘要翻译： 为了降低SLIC中的功率损耗，该SLIC包括将线电流提供给负载的双线传输线的相应线的第一和第二电流放大器，线路电流检测器检测低于阈值的线路电流。 对于高于阈值的线路电流，第二放大器由具有基本恒定电压的第一电池供电。 电压调节器与其输出端子连接到第二放大器，其电流源端子具有比所述第一电池更高的绝对电压的第二电池，并且其输入端子连接到检测器。 响应于低于所述阈值的线路电流，检测器输出与检测到的线路电流成比例的控制信号，以控制电压调节器的输出端子以提供第二放大器以及来自第二电池的负载。
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公开(公告)号：US07098723B2
公开(公告)日：2006-08-29
申请号：US10470520
申请日：2002-01-25
申请人： Henrik Hellberg , Anders Emericks , Håkan Sjödin
发明人： Henrik Hellberg , Anders Emericks , Håkan Sjödin
CPC分类号： H04M3/005 , H04M2201/06
摘要： In a circuit designed to output a varying output voltage, the substrate of the semi-conductor component is connected to a regulator, in particular a switch, connected to a lower potential than the potential of the substrate of the circuit. The circuit can for example be used in a Subscriber Line Interface Circuit (SLIC).
摘要翻译： 在设计成输出变化的输出电压的电路中，半导体部件的基板连接到调节器，特别是开关，其连接到比电路的基板的电位更低的电位。 该电路可以例如在用户线路接口电路（SLIC）中使用。
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9.发明授权
公开(公告)号：US5960076A
公开(公告)日：1999-09-28
申请号：US809681
申请日：1997-03-19
CPC分类号： H04M3/005 , H04M19/005
摘要： To determine the deviation of longitudinal signal components from a predetermined value on a balanced two-wire circuit (A,B), a first voltage is measured between one of the wires (A) and a first reference potential by means of a first voltage measuring means (3), a second voltage is measured between the second wire (B) and a second reference potential by means of a second voltage measuring means (4), and the difference between the first and the second voltage is formed by means of a difference forming means (5), said difference being proportional to the deviation of the longitudinal signal components from the mean value of the first and the second reference potential.
摘要翻译： PCT No.PCT / SE95 / 01052 Sec。 371日期1997年3月19日 102（e）1997年3月19日PCT PCT 1995年9月18日PCT公布。 出版物WO96 / 09711 日期1996年3月28日为了确定纵向信号分量与平衡双线电路（A，B）上的预定值的偏差，在一条导线（A）和第一参考电位之间通过装置测量第一电压 的第一电压测量装置（3）中，通过第二电压测量装置（4）在第二电线（B）和第二参考电位之间测量第二电压，并且第一和第二电压之间的差为 通过差分形成装置（5）形成，所述差值与纵向信号分量与第一和第二参考电位的平均值的偏差成比例。
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