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1. 发明授权

US06119090A Subscriber line interface circuit which automatically adjusts the signal headroom on a telephone line and a method of doing the same 失效
标题翻译：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
申请人： Anders Emericks , Henrik Hellberg , Mattias Israelsson , Carl-Henrik Malmgren
发明人： Anders Emericks , Henrik Hellberg , Mattias Israelsson , Carl-Henrik Malmgren
IPC分类号： H04M19/00 , H04Q3/42
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）。

2. 发明授权

US06195429B1 Arrangement in a subscriber line interface circuit 失效
标题翻译：用户线接口电路中的布置
公开(公告)号：US06195429B1
公开(公告)日：2001-02-27
申请号：US09053727
申请日：1998-04-02
申请人： Anders Emericks , Henrik Hellberg , Mattias Israelsson , Carl-Henrik Malmgren
发明人： Anders Emericks , Henrik Hellberg , Mattias Israelsson , Carl-Henrik Malmgren
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。

3. 发明授权

US06542605B1 Method and arrangement for choosing supply voltage 失效
标题翻译：选择电源电压的方法和布置
公开(公告)号：US06542605B1
公开(公告)日：2003-04-01
申请号：US09323604
申请日：1999-06-01
申请人： Mattias Israelsson , Anders Emericks , Carl-Henrik Malmgren , Henrik Hellberg
发明人： Mattias Israelsson , Anders Emericks , Carl-Henrik Malmgren , Henrik Hellberg
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。

4. 发明授权

US06239648B1 System and method for dissipating heat in an electric device 失效
标题翻译：用于在电气设备中散热的系统和方法
公开(公告)号：US06239648B1
公开(公告)日：2001-05-29
申请号：US08966414
申请日：1997-11-07
申请人： Anders Emericks , Henrik Hellberg , Mattias Israelsson , Carl-Henrik Malmgren
发明人： Anders Emericks , Henrik Hellberg , Mattias Israelsson , Carl-Henrik Malmgren
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。

5. 发明授权

US6148076A Method and an arrangement for controlling the operating mode of a subscriber line interface circuit 失效
标题翻译：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
申请人： Hans Eriksson , Carl-Henrik Malmgren , Henrik Hellberg , Anders Emericks , Henrik Sandstrom
发明人： Hans Eriksson , Carl-Henrik Malmgren , Henrik Hellberg , Anders Emericks , Henrik Sandstrom
IPC分类号： H04Q3/545 , H04M3/00 , H04M3/22 , H04M19/00 , H04Q3/42 , H04Q3/76 , H04M1/00 , H04J3/16
CPC分类号： H04Q3/76 , H04M19/00 , H04M3/005
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。

6. 发明授权

US5801520A Supply voltage switching apparatus 失效
标题翻译：电源开关装置
公开(公告)号：US5801520A
公开(公告)日：1998-09-01
申请号：US836225
申请日：1997-05-07
申请人： Carl-Henrik Malmgren , Hans Oskar Eriksson , Henrik Helmer Hellberg
发明人： Carl-Henrik Malmgren , Hans Oskar Eriksson , Henrik Helmer Hellberg
IPC分类号： G05F1/00 , G05F1/56 , H03K17/30 , H04M19/00
CPC分类号： H04M19/005
摘要： An apparatus for automatically switching a load between different supply voltages in dependence on varying voltage demands of the load includes a number of analog series regulators. The supply voltage connection terminals of the series regulators are connected to an individual one of the supply voltages while the output terminals of the series regulators are connected to the load to individually conduct current to/from the load in one and the same direction. The reference voltage input terminals of the series regulators are supplied with an individual reference voltage in response to the voltage demand of the load in such a manner that a series regulator connected to a supply voltage of a large absolute value is adapted to be supplied with a reference voltage of a smaller absolute value than a series regulator connected to a supply voltage of a smaller absolute value and strive to output voltage on its output terminal, which is of a smaller absolute value than the output voltage which a series regulator connected to a supply voltage of a smaller absolute value strives to output.
摘要翻译： PCT No.PCT / SE95 / 01323 Sec。 371日期1997年5月7日 102（e）日期1997年5月7日PCT提交1995年11月8日PCT公布。公开号WO96 / 15617 日期1996年5月23日根据负载变化的电压需求自动切换不同电源电压之间的负载的装置包括多个模拟串联调节器。串联稳压器的电源电压连接端子连接到单独的一个电源电压，而串联稳压器的输出端子连接到负载，以在同一个方向上单独地向负载传导电流。串联稳压器的参考电压输入端子响应于负载的电压需求而被提供单独的参考电压，使得连接到大绝对值的电源电压的串联调节器适于被提供有参考电压的绝对值比连接到绝对值较小的电源电压的串联调节器的绝对值更小，并且努力输出其输出端子上的电压，绝对值比串联稳压器连接到电源的输出电压的绝对值更小电压值绝对值越小越好。

7. 发明授权

US5901221A Driving stage for driving differential amplifiers of a subscriber line interface circuit 失效
标题翻译：用于驱动用户线接口电路的差分放大器的驱动级
公开(公告)号：US5901221A
公开(公告)日：1999-05-04
申请号：US836226
申请日：1997-05-07
申请人： Hans Oskar Eriksson , Carl-Henrik Malmgren , Henrik Helmer Hellberg , Elisabeth Maria Larsson
发明人： Hans Oskar Eriksson , Carl-Henrik Malmgren , Henrik Helmer Hellberg , Elisabeth Maria Larsson
IPC分类号： H03F3/45 , H04M19/00 , H04Q3/42 , H04M1/00
CPC分类号： H04M19/005
摘要： In a driving stage for driving the two differential amplifier output stages of a subscriber line interface circuit, the driving stage is adapted to generate four driving currents in dependence on, on the one hand, transversal and longitudinal signals incoming to the driving stage and, on the other hand, a reference current, and to supply these driving currents in pairs to the two inputs of the differential amplifier output stages, all four of the driving currents being larger than zero.
摘要翻译： PCT No.PCT / SE95 / 01322 Sec。 371日期1997年5月7日 102（e）日期1997年5月7日PCT提交1995年11月8日PCT公布。第WO96 / 15592号公报日期1996年5月23日在用于驱动用户线接口电路的两个差分放大器输出级的驱动阶段中，驱动级适于产生四个驱动电流，一方面依赖于进入驱动的横向和纵向信号并且另一方面是参考电流，并且将这些驱动电流成对地提供给差分放大器输出级的两个输入，所有四个驱动电流大于零。

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