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1. 发明授权

US4485351A Circuit for deriving of signals and counter cycle signals from one sided input signal 失效
标题翻译：用于从单面输入信号导出信号和计数器周期信号的电路
公开(公告)号：US4485351A
公开(公告)日：1984-11-27
申请号：US308538
申请日：1981-09-28
申请人： Hans R. Schemmel , Ingo Reichelt
发明人： Hans R. Schemmel , Ingo Reichelt
IPC分类号： H03F3/26 , H03F3/04
CPC分类号： H03F3/26
摘要： The invention relates to a circuit for deriving output of signals and output counter cycle signals from a one-sided input signal.The circuit contains two transistors coupled to at least one current reflecting circuit. The two outputs of the current reflecting circuit are connected either with the emitters or the collectors of two transistors, whereby one connecting line at least one resistor is disposed. The interconnected bases of each of the two transistors are connected to an adjustable direct-current source. The equal electrodes of the two transistors which are not connected with the current reflection circuit form the signal output and the signal counter cycle output.
摘要翻译： PCT No.PCT / EP81 / 00087 Sec。 371日期1981年9月28日 102（e）1981年9月28日PCT PCT。1981年6月27日PCT公布。公开号WO82 / 00227 日期1982年1月21日。本发明涉及一种用于从单面输入信号导出信号输出和输出计数周期信号的电路。该电路包含耦合到至少一个电流反射电路的两个晶体管。电流反射电路的两个输出端与两个晶体管的发射极或集电极连接，由此设置至少一个电阻器的一个连接线。两个晶体管中的每一个的互连基极连接到可调直流电源。不与电流反射电路连接的两个晶体管的等电极形成信号输出和信号计数器周期输出。

2. 发明授权

US5121425A Telephone transmission circuit with improved switching device 失效
标题翻译：具有改进的开关装置的电话传输电路
公开(公告)号：US5121425A
公开(公告)日：1992-06-09
申请号：US444595
申请日：1989-12-01
申请人： Ingo Reichelt
发明人： Ingo Reichelt
IPC分类号： H04M1/31
CPC分类号： H04M1/312
摘要： A circuit arrangement of simple structure for producing dialing pulses for a telephone transmission system so as to provide a relatively low insertion attenuation during transmission. The impedance of the transmission system should not be reduced. At loop closure the a.c. impedance of the circuit is high-ohmic and for d.c. current the circuit has a very low resistance. A switching apparatus is connected to the wires of a connecting line in parallel with the transmission system. The switching apparatus is arranged as a series connection of a bipolar transistor and a switching element consisting of a MOS field-effect transistor.
摘要翻译：一种用于产生用于电话传输系统的拨号脉冲的简单结构的电路装置，以便在传输期间提供相对低的插入衰减。传输系统的阻抗不应该降低。循环闭合。电路的阻抗是高欧姆和直流。电流电路具有很低的电阻。开关装置与传输系统并联连接到连接线的导线。开关装置被布置为双极晶体管和由MOS场效应晶体管组成的开关元件的串联连接。

3. 发明授权

US5307403A Telephone branch line transmission circuit with blocking capacitor 失效
标题翻译：电话分支线路传输电路与阻塞电容器
公开(公告)号：US5307403A
公开(公告)日：1994-04-26
申请号：US989623
申请日：1992-12-14
申请人： Ingo Reichelt
发明人： Ingo Reichelt
IPC分类号： H04M1/31 , H04M3/22
CPC分类号： H04M1/312
摘要： A telephone branch line transmission circuit includes a control device which receives dial pulses and in response thereto controls at least two switching devices arranged between two branch lines to a telephone exchange. A blocking capacitor is coupled to the first switching device. In order to prevent charging of such capacitor from distorting the current supplied from the exchange at the end of a dial pulse, the first switching device is included between the blocking capacitor and one of the branch lines. The connection node thereof with the blocking capacitor is connected to a terminal of a second switching device, another terminal of which is coupled to the second branch line. The control terminal of the second switching device is connected to a storage capacitor. In the off-state of the switching devices no residual direct current can flow from the exchange to charge the blocking capacitor. Consequently, upon termination of a dial pulse, the blocking capacitor cannot distort the current supplied by the exchange. The storage capacitor charges during dial pulses and establishes a high impedance across the branch lines after dialing is completed.
摘要翻译：电话分支线路传输电路包括接收拨号脉冲的控制装置，并且响应于此控制至少两个配置在电话交换机的分支线路之间的交换设备。隔离电容器耦合到第一开关器件。为了防止这种电容器的充电使得在拨号脉冲结束时从交换机提供的电流失真，第一开关装置包括在阻塞电容器和一条支线之间。其与隔离电容器的连接节点连接到第二开关装置的端子，第二开关装置的另一端子耦合到第二支线。第二开关器件的控制端子连接到存储电容器。在开关器件的截止状态下，没有剩余的直流电流可以从交换器流过来对阻塞电容器充电。因此，当拨号脉冲终止时，阻塞电容器不会使交换机提供的电流失真。存储电容在拨号脉冲期间充电，并且在拨号完成后在分支线路上建立高阻抗。

4. 发明授权

US5247573A Telecommunications system comprising a circuit arrangement for at least one subscriber station 失效
标题翻译：包含至少一个订户站的电路安排的电信系统
公开(公告)号：US5247573A
公开(公告)日：1993-09-21
申请号：US714294
申请日：1991-06-12
申请人： Ingo Reichelt
发明人： Ingo Reichelt
IPC分类号： H04M3/02 , H04M19/00 , H04M19/02 , H04Q3/42
CPC分类号： H04M19/02
摘要： A subscriber line control circuit for controlling a reversing switch to couple a subscriber station either to an AC signalling voltage generator or to a DC line voltage supply, depending on whether the subscriber station is on-hook or off-hook. The control circuit includes a capacitor connected between the subscriber line and the reversing switch and which by means of a rectifier is charged to a DC charge voltage by alternate half cycles of the AC signalling voltage. During the other half cycles the DC charge voltage superimposes on the AC signalling voltage and so is available for actuating an automatic switching arrangement by which the subscriber station is selected for coupling to the reversing switch. When the subscriber station goes off-hook the capacitor discharges over the subscriber line, resulting in a change in voltage or current which is detected by a detection circuit. The detection circuit then supplies a control signal to the reversing switch to cause it to change-over to the DC line voltage supply. Such control circuit thereby dispenses with the need for an auxiliary DC source for actuating the automatic switching arrangement.
摘要翻译：用户线路控制电路，用于根据用户台是挂机还是摘机来控制反向开关以将用户站耦合到AC信号电压发生器或DC线路电压源。控制电路包括连接在用户线路和反向开关之间的电容器，并且通过整流器将交流信号电压的交替半周期充电到DC充电电压。在其他半周期期间，DC充电电压叠加在AC信号电压上，因此可用于启动自动切换装置，通过该自动切换装置，用户站被选择用于耦合到反向开关。当用户站摘机时，电容器通过用户线路放电，导致由检测电路检测到的电压或电流的变化。检测电路然后将控制信号提供给反向开关以使其转换到DC线路电压源。因此，这种控制电路免除了用于启动自动切换装置的辅助DC源的需要。

5. 发明授权

US4137466A Controllable electronic resistance device 失效
标题翻译：可控电子电阻器件
公开(公告)号：US4137466A
公开(公告)日：1979-01-30
申请号：US858266
申请日：1977-12-07
申请人： Hans R. Schemmel , Ingo Reichelt
发明人： Hans R. Schemmel , Ingo Reichelt
IPC分类号： H03G1/04 , H03G1/00 , H03G3/00 , H03H7/24 , H03H11/46 , H03K1/14
CPC分类号： H03G3/00 , H03G1/0047 , H03G1/007 , H03G1/0082 , H03H11/46
摘要： A variable resistance device utilizes a control signal variable resistor and a first fixed resistor connected in series as a voltage divider as well as a second fixed resistor and an operational amplifier having an input connected between the first fixed resistor and one side of the variable resistor and an output connected through the second fixed resistor to the other side of the variable resistor, as a substantially linear variable resistance device where the variable resistance is obtained across the voltage divider.
摘要翻译：可变电阻装置利用控制信号可变电阻器和串联连接的第一固定电阻器作为分压器以及第二固定电阻器和运算放大器，其输入端连接在第一固定电阻器和可变电阻器的一侧之间，通过第二固定电阻器连接到可变电阻器的另一侧的输出，作为在分压器上获得可变电阻的基本线性的可变电阻器件。

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