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公开(公告)号：US5401995A
公开(公告)日：1995-03-28
申请号：US99854
申请日：1993-07-30
申请人： Ferdinando Lari , Pietro Erratico
发明人： Ferdinando Lari , Pietro Erratico
CPC分类号： H03F1/3211
摘要： An operational amplifier, of a type which comprises a differential cell transconductor input stage (2) incorporating a current mirror (5) provided with a pair of degenerative resistors (R9,R10) and a gain stage (7), driven directly by a transistor (Q12) of said mirror (5), has each degenerative resistor (R9,R10) formed within an epitaxial well wherewith a parasitic diode (D1,D2) is associated. Each diode (D1,D2) is connected in parallel with its corresponding resistor (R9,R10) to prevent the transistor (Q12) which drives the gain stage (7) from becoming saturated.
摘要翻译： 一种运算放大器，它是一种类型的运算放大器，它包括一个包含电流镜（5）的差分单元跨导体输入级（2），该电流反射镜（5）设有一对由晶体管直接驱动的退化电阻（R9，R10）和增益级（7） （5）的（Q12）具有形成在外延阱内的每个退化电阻器（R9，R10），其中寄生二极管（D1，D2）相关联。 每个二极管（D1，D2）与其对应的电阻器（R9，R10）并联连接，以防止驱动增益级（7）的晶体管（Q12）变得饱和。
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2.发明授权Monolithically integratable telephone circuit for generating control signals for displaying telephone charges 失效用于产生显示电话费用的控制信号的单片可积分电话电路
公开(公告)号：US4638122A
公开(公告)日：1987-01-20
申请号：US731167
申请日：1985-05-06
CPC分类号： H04M15/00
摘要： A telephone circuit which may be monolithically integrated, for generating control signals for displaying the telephone charges to a telephone user, is coupled to a AC voltage signal generator having a predetermined amplitude and frequency which are constant over time. The circuit includes a voltage generator for generating voltage signals which are spaced over time and have a trapezoidal pulse waveshape. A multiplier circuit calculates the product of the signals supplied by the two generators and supplies a signal which is sent to the speech circuit of the subscriber's line and is added to the speech (i.e.--conversation) signals. The circuit also includes a circuit for receiving an image signal of the overall signal adapted to the telephone line; a high-pass filter for eliminating the speech signal components from the image signal; a rectifier circuit for rectifying the filtered signal and a comparator for comparing the rectified signal with a reference signal. If the amplitude of the rectified signal is greater than the amplitude of the reference signal, the comparator generates a signal designed to stop the increase in the level of the trapezoidal pulse signals generated by the voltage generator thereby regulating the amplitude of the trapezoidal pulse signals.
摘要翻译： 可以单片集成的用于产生用于向电话用户显示电话费用的控制信号的电话电路被耦合到具有一定时间长度的预定幅度和频率的AC电压信号发生器。 该电路包括用于产生电压信号的电压发生器，其随时间间隔并具有梯形脉冲波形。 乘法器电路计算由两个发生器提供的信号的乘积，并提供发送到用户线路的语音电路并被添加到语音（即会话）信号的信号。 电路还包括用于接收适合于电话线的整体信号的图像信号的电路; 用于从图像信号中消除语音信号分量的高通滤波器; 用于整流滤波信号的整流电路和用于将整流信号与参考信号进行比较的比较器。 如果整流信号的幅度大于参考信号的振幅，则比较器产生一个信号，该信号被设计成停止由电压发生器产生的梯形脉冲信号的电平的增加，从而调节梯形脉冲信号的幅度。
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公开(公告)号：US06873702B1
公开(公告)日：2005-03-29
申请号：US09475804
申请日：1999-12-30
CPC分类号： H04M19/02
摘要： A subscriber's telephone system is presented that includes at least one driver circuit connected to Tip and Ring terminals. An additional network is connected between an output of the driver circuit and the Ring terminal. This additional network includes a suitably dimensioned capacitor and a diode limiter connected in parallel with each other to minimize the overall voltage while maintaining a desired battery mean value.
摘要翻译： 提出了一种用户电话系统，其包括连接到尖端和环形终端的至少一个驱动器电路。 在驱动电路的输出和环形端子之间连接一个附加网络。 该附加网络包括适当尺寸的电容器和二极管限制器，彼此并联连接以最小化整个电压，同时保持期望的电池平均值。
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4.发明授权MOS transistors substitute circuit having a transformer/data interface function, particularly for ISDN networks and corresponding control and driving switch configuration 有权具有变压器/数据接口功能的MOS晶体管替代电路，特别适用于ISDN网络和相应的控制和驱动开关配置公开(公告)号：US06560333B1
公开(公告)日：2003-05-06
申请号：US09159526
申请日：1998-09-23
IPC分类号： H04M1900
CPC分类号： H04Q11/0435 , H04L12/00 , H04M19/08 , H04Q2213/13003 , H04Q2213/1308 , H04Q2213/13082 , H04Q2213/1309 , H04Q2213/13166 , H04Q2213/13202 , H04Q2213/13209 , H04Q2213/13305 , H04Q2213/1332 , H04Q2213/13322 , Y02D70/144
摘要： The invention relates to a MOS transistors substitutive circuit having a transformer/data interface function, in particular for ISDN networks, comprising first (11a) and second (11b) power supply/transmitter blocks, the first power supply/transmitter block (11a) being connected between a voltage reference (V) and a first data interface (RX), and the second power supply/transmitter block (11b) being connected between a ground potential reference (GND) and a second data interface (TX), both power supply/transmitter blocks being connected to a supply voltage reference (VDD). The MOS transistors substitutive circuit according to the invention comprises first (12) and second (12′) MOS transistor pairs connected to the voltage reference (V), the MOS transistors being diode configured and held in their saturation range, so as to have a high A.C. impedance and virtually zero D.C. impedance, thereby minimizing power dissipation through the substitutive circuit. The invention also concerns a control and driving switch configuration for a network termination of at least first (11) and second (11′) MOS transistors substitutive circuits according to the invention, operating respectively in a first condition (“normal condition”) of operation of the network termination characterized by the presence of the polarity reverse control signal (Scrp), and a second condition (“RM emergency condition”) of operation of the network termination characterized by the absence of the polarity reverse control signal (Scrp). The control configuration selects the voltage reference being applied to the power supply/transmitter blocks.
摘要翻译： 本发明涉及一种具有变压器/数据接口功能的MOS晶体管替代电路，特别是对于ISDN网络，包括第一（11a）和第二（11b）电源/发射器模块，第一电源/发射器模块（11a） 连接在电压基准（V）和第一数据接口（RX）之间，并且第二电源/发射器模块（11b）连接在接地电位基准（GND）和第二数据接口（TX）之间，两个电源 /发射机模块连接到电源电压基准（VDD）。 根据本发明的MOS晶体管替代电路包括连接到电压基准（V）的第一（12）和第二（12'）MOS晶体管对，所述MOS晶体管被二极管配置并保持在其饱和范围内，以具有 高交流阻抗和几乎零直流阻抗，从而最小化通过替代电路的功率耗散。本发明还涉及用于至少第一（11）和第二（11'）MOS晶体管替代电路的网络终端的控制和驱动开关配置， 本发明分别在由极性反向控制信号（Scrp）的存在表征的网络终端的操作的第一条件（“正常状态”）和第二条件（“RM紧急情况”）中操作 网络终端的特征在于不存在极性反向控制信号（Scrp）。 控制配置选择施加到电源/发射器模块的电压基准。
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5.发明授权
公开(公告)号：US4782507A
公开(公告)日：1988-11-01
申请号：US841789
申请日：1986-03-20
申请人： Marco Siligoni , Ferdinando Lari
发明人： Marco Siligoni , Ferdinando Lari
CPC分类号： H04M3/2272
摘要： A circuit, which may be monolithically integrated, for measuring longitudinal and transverse currents in a two-wire transmission line, includes first and second current mirror circuits of a first type, each having an input branch and first and second output branches. The measuring circuit also includes third, fourth and fifth current mirror circuits, each having an input branch and an output branch, and first and second currents mirror circuits of a second type, each having first and second input branches and first and second output branches. The input branches of the first and second current mirror circuits of the first type and the first input branches of the first and second current mirror circuits of the second type are used as input terminals for coupling to the line. The first and second current mirror circuits of the first type are both connected to the third current mirror circuit and are respectively connected to the first and second current mirror circuits of the second type, which are both connected to the fourth current mirror circuit. The second current mirror circuit of the second type is connected to the fifth current mirror circuit whose output the first output of the first current mirror circuit of the second type are connected together to form a first output terminal. The output of the third and the fourth current mirror circuits are connected together to form a second output terminal.
摘要翻译： 可以单片集成用于测量双线传输线中的纵向和横向电流的电路包括第一类型的第一和第二电流镜电路，每个具有输入分支和第一和第二输出分支。 测量电路还包括第三，第四和第五电流镜电路，每个具有输入支路和输出支路，以及第一和第二电流镜像电路，其具有第一和第二输入支路以及第一和第二输出支路。 第一类型的第一和第二电流镜电路的输入支路和第二类型的第一和第二电流镜电路的第一输入支路用作用于耦合到线路的输入端子。 第一类型的第一和第二电流镜电路都连接到第三电流镜电路，并且分别连接到第二类型的第一和第二电流镜电路，它们均连接到第四电流镜电路。 第二类型的第二电流镜电路连接到第五电流镜电路，其第二类型的第一电流镜电路的第一输出的输出连接在一起以形成第一输出端。 第三和第四电流镜电路的输出连接在一起以形成第二输出端。
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6.发明授权Method and device for measuring operation parameters of telephone subscriber lines and associated interface circuits 失效用于测量电话用户线路和相关接口电路的操作参数的方法和装置
公开(公告)号：US5440612A
公开(公告)日：1995-08-08
申请号：US964612
申请日：1992-10-22
摘要： A method of measuring under running conditions operation parameters of an interface circuit and a telephone subscriber line connected to it, said interface circuit comprising a first integrated circuit operating on a high voltage with outputs connected to the line and second outputs on which transverse and longitudinal current values of the line are respectively present in normal operation, and a second integrated circuit operating on a low voltage between the first circuit and a telephone exchange, comprises the steps of: switching the outputs across an impedance of a predetermined value, and measuring through the first circuit the values of the currents present on the second outputs; switching said outputs back to across the line leads, and measuring through the first circuit the values of the transverse and longitudinal line current values; performing, for each measurement through the second circuit, a digital encoding of the measured values and transmitting such encoded values to the telephone exchange.
摘要翻译： 一种在运行条件下测量接口电路和连接到其的电话用户线的操作参数的方法，所述接口电路包括在高电压下操作的第一集成电路，其中连接到所述线路的输出端和第二输出端上具有横向和纵向电流 线的值分别存在于正常操作中，并且在第一电路和电话交换机之间工作在低电压上的第二集成电路包括以下步骤：跨越预定值的阻抗切换输出，并且通过 首先电路存在于第二输出端的电流值; 将所述输出切换回线引线，并且通过第一电路测量横向和纵向线电流值的值; 对于通过第二电路进行的每个测量，对测量值进行数字编码，并将这些编码值发送到电话交换机。
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公开(公告)号：US4668907A
公开(公告)日：1987-05-26
申请号：US806797
申请日：1985-12-09
申请人： Marco Siligoni , Ferdinando Lari
发明人： Marco Siligoni , Ferdinando Lari
CPC分类号： G06G7/14
摘要： A monolithically integratable current adding circuit includes a current mirror circuit, the input port of which forms a first input terminal of an adding circuit and the output port of which is connected, via two series connected resistors, to a voltage reference. The point of connection between these series connected resistors forms a second input terminal of the adding circuit. The adding circuit also includes a voltage to current converter which has a first and second input terminal connected respectively to the output port of the current mirror circuit and to the voltage reference and which has an output terminal which forms the output terminal of the adding circuit.
摘要翻译： 单片可积分电流相加电路包括电流镜电路，其输入端口形成加法电路的第一输入端，其输出端经由两个串联的电阻器连接到电压基准。 这些串联电阻之间的连接点构成加法电路的第二输入端。 加法电路还包括电压 - 电流转换器，其具有分别连接到电流镜电路的输出端口和电压基准的第一和第二输入端子，并且具有形成加法电路的输出端子的输出端子。
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