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1. 发明授权

US4847898A Speech circuit configuration 失效
标题翻译：语音电路配置
公开(公告)号：US4847898A
公开(公告)日：1989-07-11
申请号：US103407
申请日：1987-09-30
申请人： Armin Doll , Emil Navratil
发明人： Armin Doll , Emil Navratil
IPC分类号： H04M1/00 , H04M1/60 , H04M19/00 , H04M19/08
CPC分类号： H04M1/6008 , H04M19/08
摘要： An electronic speech circuit configuration includes first and second line terminals to be connected to a telephone line. An AC circuit portion includes a modulator circuit for generating a line transmission current. A DC circuit portion supplies energy and generates a DC current/voltage characteristic curve. The DC circuit portion includes a reference potential source and a decoupling capacitor. A current sensing resistor is provided. A high-speed control amplifier has a control circuit and controls current through the current sensing resistor. A buffer capacitor is provided. Output terminals are connected to the buffer capacitor for the connection of external components. The DC circuit portion also includes a current toggle circuit connected upstream of the buffer capacitor. The current for feeding the buffer capacitor flows through the current sensing resistor connected to the first line terminal. The DC circuit portion and the AC circuit portion are connected in the control circuit of the high-speed control amplifier.
摘要翻译：电子语音电路配置包括要连接到电话线的第一和第二线路终端。 AC电路部分包括用于产生线路传输电流的调制器电路。 DC电路部分提供能量并产生DC电流/电压特性曲线。 DC电路部分包括参考电位源和去耦电容器。提供电流检测电阻。高速控制放大器具有控制电路，并通过电流检测电阻来控制电流。提供缓冲电容器。输出端子连接到缓冲电容器，用于连接外部元件。直流电路部分还包括连接在缓冲电容器上游的电流拨动电路。用于馈送缓冲电容器的电流流过连接到第一线路端子的电流感测电阻器。 DC电路部分和AC电路部分连接在高速控制放大器的控制电路中。

2. 发明授权

US5402017A Controllable circuit configuration for compensating fluctuations in an amplifier 失效
标题翻译：用于补偿放大器波动的可控电路配置
公开(公告)号：US5402017A
公开(公告)日：1995-03-28
申请号：US276760
申请日：1994-07-18
申请人： Artur Bardl , Manfred Lindner , Emil Navratil
发明人： Artur Bardl , Manfred Lindner , Emil Navratil
IPC分类号： H03G3/20 , H04M1/60 , G06G7/12
CPC分类号： H03G3/301 , H04M1/6025
摘要： A circuit configuration includes a final control element being adjustable as a function of a control current, wherein the function is subject to certain fluctuations and variations. A constant current source supplies an output current being equally subject to the certain fluctuations and variations. A multiplier is connected between the constant current source and the final control element, for varying the current output by the constant current source by a factor being dependent on a control signal, and for delivering the current output by the constant current source to the final control element as the control current.
摘要翻译：电路配置包括作为控制电流的函数可调整的最终控制元件，其中功能受到一定的波动和变化。恒定电流源提供输出电流同样受到某些波动和变化的影响。恒定电流源和最终控制元件之间连接一个乘法器，用于通过恒定电流源的电流输出改变一个取决于控制信号的因子，并将恒流源的电流输出传递给最终控制元素作为控制电流。

3. 发明授权

US5442695A Ringer circuit 失效
标题翻译：林格电路
公开(公告)号：US5442695A
公开(公告)日：1995-08-15
申请号：US364415
申请日：1994-12-27
申请人： Artur Bardl , Emil Navratil
发明人： Artur Bardl , Emil Navratil
IPC分类号： H04M19/04 , H04M1/26
CPC分类号： H04M19/04
摘要： A ringer circuit includes a rectifier unit receiving a calling alternating voltage and having first and second output terminals. An acoustic transducer has first and second terminals. A controllable first switch is connected between the first output terminal of the rectifier unit and the first terminal of the acoustic transducer. A controllable second switch is connected between the first and second terminals of the acoustic transducer. A capacitor is connected between the second terminal of the acoustic transducer and the second terminal of the rectifier unit. A switch control is supplied from the capacitor for opening and closing the first and second switches in alternation and in phase opposition to one another as a function of the calling alternating voltage.
摘要翻译：振铃电路包括接收呼叫交流电压并具有第一和第二输出端的整流单元。声换能器具有第一和第二端子。可控制的第一开关连接在整流单元的第一输出端和声换能器的第一端之间。可控的第二开关连接在声换能器的第一和第二端之间。在声换能器的第二端子与整流器单元的第二端子之间连接电容器。开关控制由电容器提供，用于根据呼叫交流电压的交替和相位相反地打开和闭合第一和第二开关。

4. 发明授权

US4894863A Method for gain control in telephone sets having an electronic speech circuit, and apparatus for performing the method 失效
标题翻译：用于具有电子语音电路的电话机中的增益控制方法，以及用于执行该方法的装置
公开(公告)号：US4894863A
公开(公告)日：1990-01-16
申请号：US103385
申请日：1987-09-30
申请人： Emil Navratil , Armin Doll
发明人： Emil Navratil , Armin Doll
IPC分类号： H04M1/60 , H04M1/76
CPC分类号： H04M1/76 , H04M1/6008
摘要： A method for gain control of telephone sets having an electronic speech circuit and an apparatus for carrying out the method include a modulation current source. Two line terminals connect the modulation current source to a telephone line. A microphone amplifier has an input connected to a microphone terminal and an output controlling the modulation current source for generating a line signal. Signals are derived from the modulation current source and converted into mutually associated measurement signals and threshold value signals. The mutually associated measurement and threshold value signals are compared with one another. The gain of the microphone amplifier is regulated as a function of the result of the comparison.
摘要翻译：一种具有电子语音电路的电话机的增益控制方法以及用于执行该方法的装置包括调制电流源。两条线路端子将调制电流源连接到电话线。麦克风放大器具有连接到麦克风端子的输入端和控制调制电流源的输出端，用于产生线路信号。信号从调制电流源导出，并转换成相互关联的测量信号和阈值信号。相互关联的测量和阈值信号彼此进行比较。麦克风放大器的增益作为比较结果的函数进行调节。

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