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21. 发明授权

US3350510A Balancing network for telephone subscriber stations 失效
标题翻译：平衡电话用户站网络
公开(公告)号：US3350510A
公开(公告)日：1967-10-31
申请号：US37993764
申请日：1964-07-02
申请人： INT STANDARD ELECTRIC CORP
发明人： ULRICH KNAUER HANS , GERHARD SCHMIDT
IPC分类号： H04M1/74 , H04M1/76
CPC分类号： H04M1/76 , H04M1/74

22. 发明授权

US3056915A Circuit of high alternating current impedance for feeding a constant direct current to a circuit 失效
标题翻译：用于将恒定直流电流馈送到电路的高交流阻抗电路
公开(公告)号：US3056915A
公开(公告)日：1962-10-02
申请号：US75781358
申请日：1958-08-28
申请人： PHILIPS CORP
发明人： DOUWE MEEWEZEN WILLEM
IPC分类号： G05F1/563 , G05F3/20 , G05F3/22 , H04B3/44 , H04M1/76 , H04M19/00 , H04Q3/00
CPC分类号： H04Q3/00 , G05F1/563 , G05F3/20 , G05F3/22 , H04B3/44 , H04M1/76 , H04M19/001 , H04M19/003

23. 发明授权

US3027428A Telephone apparatus 失效
标题翻译：电话机
公开(公告)号：US3027428A
公开(公告)日：1962-03-27
申请号：US70535957
申请日：1957-12-26
申请人： SVENSKA RELAFABRIKEN ABN AB
发明人： DAVID EKLOV
IPC分类号： H04M1/76 , H04M19/08
CPC分类号： H04M19/08 , H04M1/76

24. 发明授权

US2770679A Telephone subsets 失效
标题翻译：电话子集
公开(公告)号：US2770679A
公开(公告)日：1956-11-13
申请号：US28213152
申请日：1952-04-14
申请人： INT STANDARD ELECTRIC CORP
发明人： CRISP BEADLE ANTHONY
IPC分类号： H04M1/76
CPC分类号： H04M1/76

25. 发明授权

US2620402A Telephone substation circuit with automatic compensation for length of line 失效
标题翻译：电话变电站电路，自动补偿线路长度
公开(公告)号：US2620402A
公开(公告)日：1952-12-02
申请号：US79317047
申请日：1947-12-22
申请人： BELL TELEPHONE LABOR INC
发明人： NELSON BOTSFORD , BOYSEN JR ALBERT P , AIKENS ANDREW J , GOODALE JR WALTER D , INGLIS ALFRED H
IPC分类号： H04M1/58 , H04M1/76
CPC分类号： H04M1/76 , H04M1/58

26. 发明授权

US1624057A Telephone substation circuits 失效
标题翻译：电话变电站电路
公开(公告)号：US1624057A
公开(公告)日：1927-04-12
申请号：US3416425
申请日：1925-06-01
申请人： AMERICAN TELEPHONE & TELEGRAPH
发明人： MCKOWN FREDERICK W , EGINHARD DIETZE
IPC分类号： H04M1/76
CPC分类号： H04M1/76

27. 发明申请

US20170064074A1 COMMUNICATION DEVICE 审中-公开
标题翻译：通信设备
公开(公告)号：US20170064074A1
公开(公告)日：2017-03-02
申请号：US15185725
申请日：2016-06-17
申请人： Oki Data Corporation
发明人： Kimiaki OGAWA
IPC分类号： H04M1/76 , H04N1/00 , H04M19/02
CPC分类号： H04M1/76 , H04B3/493 , H04M3/28 , H04M3/305 , H04M7/0096 , H04M11/066 , H04M19/02 , H04N1/00206 , H04N1/00281 , H04N2201/0093
摘要： A communication device includes: a signal generator configured to generate a first signal and supply the first signal to a telephone line; a terminator having a variable terminal impedance as seen from the telephone line; a detector configured to detect a difference between the terminal impedance and a line impedance of the telephone line; and a controller configured to determine the terminal impedance so that the difference is reduced.
摘要翻译：通信装置包括：信号发生器，被配置为产生第一信号并将第一信号提供给电话线; 具有从电话线看到的可变端子阻抗的终端器; 检测器，其被配置为检测所述终端阻抗与所述电话线的线路阻抗之间的差异; 以及控制器，被配置为确定所述端子阻抗，使得所述差被减小。

28. 发明授权

US09363364B2 Method for correcting telephone signal degradation caused by the length of the analog line via the receiver 有权
标题翻译：用于通过接收机校正由模拟线路的长度引起的电话信号劣化的方法
公开(公告)号：US09363364B2
公开(公告)日：2016-06-07
申请号：US13321045
申请日：2010-05-27
申请人： Gilles Bourgoin
发明人： Gilles Bourgoin
IPC分类号： H04M7/04 , H04M1/76 , H04M1/74
CPC分类号： H04M1/76 , H04M1/74
摘要： The present invention relates to the field of telephony and specifically to a method for correcting the degradation of telephone signal quality caused by analogue lines. The invention describes managing, via the receiver, a specific correction of telephone signal degradation caused by the length of the analogue line between the parties. Said line length between the receiver and the telephone switchboard to which said receiver is connected is stored in the receiver. Advantageously, the line lengths between the receiver of the called party and the corresponding switchboard are stored, for example in the director of the apparatus. During the call, said line length is taken into account by a specific correction means for said correction inside the receiver.
摘要翻译：本发明涉及电话领域，具体涉及用于校正由模拟线路引起的电话信号质量恶化的方法。本发明描述了经由接收机管理由双方之间的模拟线路的长度引起的电话信号劣化的特定校正。所述接收机与所述接收机连接的所述电话交换机之间的所述线路长度被存储在所述接收机中。有利地，被叫方的接收机与对应的交换机之间的线路长度被存储在例如设备的控制器中。在通话期间，通过用于接收机内的所述校正的特定校正装置考虑所述线路长度。

29. 发明申请

US20130336463A1 SYSTEM AND METHOD FOR OPTIMIZING TERMINATION IMPEDANCE FOR AN ANALOG TELEPHONE LINE 有权
标题翻译：用于模拟电话线优化终止阻抗的系统和方法
公开(公告)号：US20130336463A1
公开(公告)日：2013-12-19
申请号：US13837932
申请日：2013-03-15
申请人： John Whitehouse , Scott Dendy
发明人： John Whitehouse , Scott Dendy
IPC分类号： H04B3/23
CPC分类号： H04B3/23 , H04B3/493 , H04M1/24 , H04M1/2535 , H04M1/76 , H04M3/18
摘要： A system and method in accordance with a non-limiting aspect minimizes echo return loss in a communications system. The dial tone is broken on an analog telephone line connected to a hybrid circuit having selectable impedance configurations and that interfaces a digital communications circuit and the analog telephone line. A white noise signal as a test call is inserted through the hybrid circuit onto the analog telephone line corresponding to a selected impedance configuration. The returned white noise signal is used for measuring the echo return loss. The test call is dropped. This process is repeated at different impedance configurations to obtain echo return loss measurements at each of the impedance configurations. The optimum impedance setting configuration is determined based on the results and applied to the hybrid circuit and typically set during a running telephone configuration.
摘要翻译：根据非限制性方面的系统和方法使通信系统中的回波损耗最小化。在连接到具有可选阻抗配置的混合电路并且连接数字通信电路和模拟电话线的模拟电话线上，拨号音被破坏。将作为测试呼叫的白噪声信号通过混合电路插入到对应于所选阻抗配置的模拟电话线上。返回的白噪声信号用于测量回波回波损耗。测试呼叫被丢弃。该过程在不同的阻抗配置下重复，以在每个阻抗配置下获得回波回波损耗测量。基于结果确定最佳阻抗设置配置，并将其应用于混合电路，并且通常在运行的电话配置期间设置。

30. 发明申请

US20130234804A1 Method and Circuitry for Matching Impedance 有权
标题翻译：匹配阻抗的方法和电路
公开(公告)号：US20130234804A1
公开(公告)日：2013-09-12
申请号：US13642138
申请日：2011-08-24
申请人： Zhuwei Yu
发明人： Zhuwei Yu
IPC分类号： H03H11/30
CPC分类号： H03H11/30 , H03H7/40 , H04M1/76
摘要： Disclosed are a method and a circuit for impedance matching. The method comprises: a peripheral impedance detection module detecting an impedance of a subscriber telephone and outputting information about the impedance of the subscriber telephone; an analog switch switching module providing an impedance matching path between the impedance of the subscriber telephone and an impedance matching module according to the information about the impedance of the subscriber telephone output by the peripheral impedance detection module; the impedance matching module providing a corresponding impedance through the impedance matching path provided by the analog switch switching module to match to said impedance of the subscriber telephone. By the present invention, the impedance matching is achieved when a wireless access box communicates with telephones with various impedance modes. The matching process is flexible, automatic, and does not need manual configuration, and the technology is simple, reliable, and of low cost.
摘要翻译：公开了一种用于阻抗匹配的方法和电路。该方法包括：外围阻抗检测模块，其检测用户电话的阻抗并输出关于用户电话的阻抗的信息; 模拟开关切换模块，根据关于由外围阻抗检测模块输出的用户电话的阻抗的信息，在用户电话的阻抗与阻抗匹配模块之间提供阻抗匹配路径; 阻抗匹配模块通过由模拟开关切换模块提供的阻抗匹配路径提供相应的阻抗，以匹配用户电话的所述阻抗。通过本发明，当无线接入盒与具有各种阻抗模式的电话通信时，实现了阻抗匹配。匹配过程灵活，自动，不需要手动配置，技术简单，可靠，成本低。

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