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11. 发明授权

US5995619A Telephony device with compensation for line losses 失效
标题翻译：电话设备，补偿线路损耗
公开(公告)号：US5995619A
公开(公告)日：1999-11-30
申请号：US993131
申请日：1997-12-18
申请人： Patrick Bailly , Dominique Delbecq
发明人： Patrick Bailly , Dominique Delbecq
IPC分类号： H04M1/60 , H04M1/76 , H04M1/00
CPC分类号： H04M1/76 , H04M1/6008
摘要： A telephony device includes a rectifier bridge (GB) intended to be connected to a telephone line and to supply a rectified line current, an interface module (INT) permitting the transmission of signals in the direction of the telephone line and supplying an information signal (Iin), and an amplifier (AGC) whose gain is proportional to the value of a control current (Icnt) supplied by a control module (CNT). The control current (Icnt) is proportional to an exponential of a linear equation of the inverse of the value of the information signal (Iin) in order to compensate for the attenuation which the signal has undergone during its transport through the telephone line. The control module is formed by a translinear module (TRL) which receives the input signal (Iin) and produces a translinear current (Itr) whose value may be expressed in the form of a linear equation of the inverse value of the input signal (Iin), and an exponential module (EXP) which receives the translinear current (Itr) and produces the control current (Icnt) whose value may be expressed as proportional to an exponential of the value of the translinear current (Itr).
摘要翻译：电话设备包括旨在连接到电话线并提供经整流的线路电流的整流桥（GB），允许沿电话线的方向传输信号并提供信息信号的接口模块（INT） Iin）和其增益与由控制模块（CNT）提供的控制电流（Icnt）的值成比例的放大器（AGC）。控制电流（Icnt）与信息信号（Iin）的值的倒数的线性方程的指数成比例，以便补偿信号在其通过电话线传送期间经历的衰减。控制模块由接收输入信号（Iin）并产生跨导线电流（Itr）的跨线模块（TRL）形成，其值可以以输入信号（Iin）的反相值的线性方程式的形式表示）和一个指数模块（EXP），其接收跨线电流（Itr）并产生控制电流（Icnt），其值可以表示为与跨线电流（Itr）的值的指数成正比。

12. 发明授权

US5893034A Cordless parent/slave telephone set with improved sidetone handling 失效
标题翻译：无线父母/从机电话机，改进了侧音处理
公开(公告)号：US5893034A
公开(公告)日：1999-04-06
申请号：US906938
申请日：1997-08-06
申请人： Hideo Hikuma , Kiyoshi Tanaka , Koichi Tomono
发明人： Hideo Hikuma , Kiyoshi Tanaka , Koichi Tomono
IPC分类号： H04M1/58 , H04M1/725 , H04M1/76 , H04Q7/20 , H04Q7/34
CPC分类号： H04M1/585 , H04M1/76 , H04M1/725
摘要： A parent telephone set comprises a transformer, a sidetone level reducing circuit, and a first secret talk processing circuit for executing digital secret talk processing, a counterpart slave telephone set comprises a second secret talk processing circuit for executing digital secret talk processing, a delaying circuit for delaying an aural signal from the slave telephone set microphone by a specified delay time, and a level reducing circuit for reducing the level of output from the second secret talk processing circuit according to the output from the delaying circuit. The specified delay time in the delaying circuit is set according to the time required for digital secret talk processing in the first secret talk processing circuit as well as in the second secret talk processing circuit.
摘要翻译：母电话机包括变压器，侧音级降低电路和用于执行数字秘密通话处理的第一秘密通话处理电路，对方从电话机包括用于执行数字秘密通话处理的第二秘密通话处理电路，延迟电路用于将来自从属电话机麦克风的听觉信号延迟指定的延迟时间;以及电平降低电路，用于根据延迟电路的输出降低来自第二秘密通话处理电路的输出电平。延迟电路中的指定延迟时间根据第一秘密通话处理电路以及第二秘密通话处理电路中的数字秘密通话处理所需的时间来设定。

13. 发明授权

US5742676A Circuit for telephone set comprising a light-emitting diode power supply 失效
标题翻译：包括发光二极管电源的电话机电路
公开(公告)号：US5742676A
公开(公告)日：1998-04-21
申请号：US721913
申请日：1996-09-27
申请人： Fernand Courtois
发明人： Fernand Courtois
IPC分类号： H04M1/00 , H04M1/60 , H04M1/76 , H04M19/08 , H04M1/72
CPC分类号： H04M1/76 , H04M1/6025
摘要： A circuit comprising a transistor (T1) is connected in series to a resistor (RM) for measuring the line current; the whole is connected to the terminals (1,2) of the line. According to the invention, a light-emitting diode (18) is connected in series to a variable current source (20), the whole being connected in parallel to the emitter/collector path of the transistor (T1), and the variable current source, which receives a monitoring signal that represents the line current, produces a current that varies between a zero current and a maximum current for an average line current that varies between a low threshold and a high threshold.
摘要翻译：包括晶体管（T1）的电路串联连接到用于测量线路电流的电阻器（RM）; 整个连接到线路的终端（1,2）。根据本发明，发光二极管（18）串联连接到可变电流源（20），其整体与晶体管（T1）的发射极/集电极路径并联连接，并且可变电流源，其接收代表线路电流的监视信号，产生在零阈值和高阈值之间变化的平均线路电流的零电流和最大电流之间变化的电流。

14. 发明授权

US5598467A Signal interface circuit with selectable signal interface parameters 失效
标题翻译：信号接口电路，具有可选择的信号接口参数
公开(公告)号：US5598467A
公开(公告)日：1997-01-28
申请号：US353095
申请日：1994-12-09
申请人： Duncan J. Bremner , Roger K. Benton , James B. Wieser
发明人： Duncan J. Bremner , Roger K. Benton , James B. Wieser
IPC分类号： H04M1/58 , H04M1/76
CPC分类号： H04M1/585 , H04M1/76
摘要： A signal interface circuit with selectable signal interface parameters for a telephone subscriber line includes an impedance circuit having a selectable impedance value, signal terminals having an associated, definable termination impedance, a transmitter circuit having a definable transmitter transfer function and a receiver circuit having a definable receiver transfer function. The signal terminals connect to an external signal line pair having an associated line impedance for conducting outgoing and incoming signals therefrom and thereto, respectively. The transmitter circuit receives the outgoing signal from the signal terminals and provides a transmit signal in accordance with its transmitter transfer function. The receiver circuit, which includes a differential transconductance amplifier, receives an input signal and the transmit signal and provides the incoming signal to the signal terminals in accordance with its receiver transfer function. The termination impedance, transmitter transfer function and receiver transfer function are all defined by the selectable impedance, with the termination impedance defined to match the line impedance.
摘要翻译：具有用于电话用户线路的可选信号接口参数的信号接口电路包括具有可选阻抗值的阻抗电路，具有相关联的可定义终端阻抗的信号端子，具有可定义的发射机传输功能的发射机电路和具有可定义的可定义的接收机电路接收机传递功能。信号端子连接到具有相关联的线路阻抗的外部信号线对，分别用于传送和输入信号。发射机电路接收来自信号终端的输出信号，并根据发射机传输功能提供发射信号。包括差分跨导放大器的接收器电路接收输入信号和发送信号，并根据其接收器传递函数向信号端子提供输入信号。终端阻抗，发射机传输功能和接收机传输功能都由可选阻抗定义，终端阻抗定义为匹配线路阻抗。

15. 发明授权

US4996710A Side-tone adjusting system and method for key telephone system establishing a plurel kinds of speaking paths 失效
标题翻译：关键电话系统侧音调整系统及方法，建立一种语言路径
公开(公告)号：US4996710A
公开(公告)日：1991-02-26
申请号：US411378
申请日：1989-09-25
申请人： Toshiaki Takahashi , Yasuji Sato
发明人： Toshiaki Takahashi , Yasuji Sato
IPC分类号： H04M1/58 , H04M1/76 , H04Q3/58
CPC分类号： H04M1/76 , H04M1/58
摘要： The present invention disclose a switching system including an exchange coupled to a plurality of central office lines and PBX's telephone lines, and a plurality of telephone sets. Each telephone set includes a side-tone adjusting circuit which adjusts a side-tone in response to a balanced impedance to obtain a suitable side-tone. When the exchange receives a speaking path selection request, representing one of the lines, from the telephone set, it determines one of a plurality of predetermined impedance information and makes a speaking path between the selected line and the telephone set. The telephone set selects one of the balanced impedances in response to the determined impedance information.
摘要翻译：本发明公开了一种交换系统，包括耦合到多个中心局线路和PBX电话线路的交换机以及多个电话机。每个电话机包括侧音调节电路，其响应于平衡阻抗来调节侧音以获得合适的侧音。当交换机从电话机接收到表示其中一行的说话路径选择请求时，它确定多个预定阻抗信息中的一个并且在所选择的线路和电话机之间形成通话路径。电话机根据所确定的阻抗信息选择平衡阻抗之一。

16. 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。

17. 发明授权

US4742540A Circuit for switching between balanced networks 失效
标题翻译：平衡网络之间切换的电路
公开(公告)号：US4742540A
公开(公告)日：1988-05-03
申请号：US931410
申请日：1986-11-14
申请人： Pierre J. Schingh
发明人： Pierre J. Schingh
IPC分类号： H03K17/00 , H04B1/58 , H04M1/76
CPC分类号： H04B1/586 , H04M1/76
摘要： A circuit for switching one of two impedance networks to a line carrying AC signals comprising a unity gain amplifier having differential inputs connected across the first one of the impedance networks, and one of the differential inputs and an output connected across the second one of the impedance networks, and a microprocessor control terminal connected to the other of the differential inputs for applying one of either a high impedance or AC ground thereto. The circuit is small, inexpensive, requires no electromechanical parts, and takes up very little circuit board area.
摘要翻译：一种用于将两个阻抗网络中的一个切换到承载AC信号的线路的电路，所述线路包括具有连接在所述阻抗网络中的所述第一阻抗网络上的差分输入的单位增益放大器，以及所述差分输入端和所述阻抗中的所述第二阻抗网络和连接到另一个差分输入端的微处理器控制端子，用于将高阻抗或AC接地中的一个施加到其上。电路小巧，价格低廉，不需要机电零件，电路板面积很小。

18. 发明授权

US4536616A Microphone or mouthpiece signal suppression circuit 失效
标题翻译：麦克风或接口信号抑制电路
公开(公告)号：US4536616A
公开(公告)日：1985-08-20
申请号：US566434
申请日：1983-12-28
申请人： Jean C. Kaire
发明人： Jean C. Kaire
IPC分类号： H04M1/60 , H04M1/58 , H04M1/76
CPC分类号： H04M1/585 , H04M1/76
摘要： The invention relates to a circuit for a telephone set. In order to eliminate the mouthpiece signal between the receiver and the telephone set, there are provided a subtraction means receiving the mouthpiece signal and the composite signal present on the telephone line, one of the two being produced by different compensation impedances, and on the other hand a mixer controlled by a circuit as a function of the telephone line impedance. The two compensation impedances respectively correspond to the compensation of a long line and the compensation of a short line and the output of the mixer supplies a signal mixture, with variable proportions, which effectively suppresses the mouthpiece signal, no matter what the length of the telephone line.
摘要翻译：本发明涉及一种用于电话机的电路。为了消除接收机和电话机之间的接口信号，提供了一种减法装置，其接收接口信号和存在于电话线上的复合信号，其中一个由不同的补偿阻抗产生，另一个由另一个将由电路控制的混频器作为电话线阻抗的函数。两个补偿阻抗分别对应于长线的补偿和短线的补偿，并且混频器的输出提供可变比例的信号混合，这有效地抑制了接口信号，不管电话的长度是多少线。

19. 发明授权

US4515996A Telephone circuit 失效
标题翻译：电话电路
公开(公告)号：US4515996A
公开(公告)日：1985-05-07
申请号：US513941
申请日：1983-07-15
申请人： Kenneth N. Burgin
发明人： Kenneth N. Burgin
IPC分类号： H04M1/60 , H04M1/76
CPC分类号： H04M1/6025 , H04M1/76
摘要： A telephone speech circuit includes an integrated circuit (5) powered by the exchange battery via the subscriber's line. The speech circuit includes an earpiece amplifier (25) and a microphone amplifier (26) whose gains are controlled as a function of the length of the subscriber's line. The voltage on pin 7 which is dependent on the line current and hence the line length is compared with a reference voltage on pin 8 which is derived from the forward voltage drop of a diode connected to pin 8 (FIG. 1). A voltage representative of that on pin 7 is derived from a d.c. level shift circuit (27) and applied to the input of an amplifier (28). The reference voltage on pin 8 is applied to the input of an amplifier (29). The outputs of the amplifiers (28) and (29) are compared in a comparator (30) whose output is coupled to gain control inputs of the amplifier (28), the microphone amplifier (26) and the earpiece amplifier (25).FIG. 2.
摘要翻译：电话语音电路包括通过用户线由交换电池供电的集成电路（5）。语音电路包括耳机放大器（25）和麦克风放大器（26），其增益作为用户线路长度的函数被控制。引脚7上的电压取决于线路电流和线路长度，与引脚8上的参考电压进行比较，该参考电压源自连接到引脚8（图1）的二极管的正向压降。代表针脚7的电压源自直流电源。电平移位电路（27）并施加到放大器（28）的输入端。引脚8上的参考电压施加到放大器（29）的输入端。放大器（28）和（29）的输出在其输出耦合到放大器（28），麦克风放大器（26）和耳机放大器（25）的增益控制输入的比较器（30）中进行比较。图。 2。

20. 发明授权

US4502018A Gain regulation circuit for an amplifier circuit 失效
标题翻译：放大器电路的增益调节电路
公开(公告)号：US4502018A
公开(公告)日：1985-02-26
申请号：US491688
申请日：1983-05-05
申请人： Peter F. Blomley
发明人： Peter F. Blomley
IPC分类号： H04M1/60 , E06B7/10 , H03F3/45 , H03G3/30 , H03G11/00 , H04M1/76
CPC分类号： H03F3/45085 , H03G11/002 , H03G3/3005 , H04M1/76 , E06B2007/026 , H03F2203/45362
摘要： A gain regulation circuit e.g. for a telephone subscriber's instrument, includes a plurality (2n+1) of long tailed transistor pairs one of which has a significantly higher gain than the remainder (2n). The circuit may be adjusted to a composite gain value between limits defined by the high and low gain pairs by providing a suitably weighted combination of these pairs. Typically, this weighting is achieved by control currents fed into the tail circuits of the pairs.
摘要翻译： PCT No.PCT / GB82 / 00070 Sec。 371日期：1983年5月5日 102（e）日期1983年5月5日PCT提交1982年3月4日PCT公布。公开号WO83 / 03177 日期：1983年9月15日。对于电话用户的仪器，包括多个（2n + 1）长尾晶体管对，其中之一具有比余数（2n）显着更高的增益。可以通过提供这些对的适当加权的组合，将电路调整到由高和低增益对限定的极限之间的复合增益值。通常，该加权通过馈送到对的尾部电路中的控制电流来实现。

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