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41. 发明授权

US3627952A Direct current reduction network for amplification telephone sets 失效
标题翻译：用于放大电话机的直接电流减少网络
公开(公告)号：US3627952A
公开(公告)日：1971-12-14
申请号：US3627952D
申请日：1970-03-09
申请人： PERSON JEAN MICHEL
发明人： PERSON JEAN-MICHEL
IPC分类号： H04B3/44 , H04M19/00 , H04M1/76
CPC分类号： H04B3/44 , H04M19/001
摘要： Direct-current reduction network which shunts a part of the supply current of a subscriber''s telephone set having a microphone current amplifier in order to have on the exchange side a large direct-current capable of acting on the loop detection system of the exchange and on the telephone set side a smaller current. It comprises two equal resistors inserted in one and the other of the subscriber''s line wires respectively, two transistors having their base-emitter paths respectively connected to the terminals of one and the other of said resistors, a shunt resistor or two terminal-network passing the direct-current and connected between the collectors of the transistors and two diodes respectively connected in their passing direction between the emitters and collector of one or the other of the transistors.

42. 发明授权

US3602648A Subscriber telephone circuit 失效
标题翻译：订阅电话电路
公开(公告)号：US3602648A
公开(公告)日：1971-08-31
申请号：US3602648D
申请日：1969-12-08
申请人： BELL TELEPHONE LABOR INC
发明人： HOLTZ ROGER E , MARKEVICH JOHN A
IPC分类号： H04M1/76 , H03H11/12 , H04M1/58 , H04M9/08 , H04B3/24
CPC分类号： H04M1/585 , H03H11/126 , H04L25/03878 , H04M9/08
摘要： In a telephone set speech circuit employing a nonreactive hybrid network the transmitter branch and the receiver branch each includes a respective loop equalizer in the form of an operational amplifier with a feedback control path which includes a path to ground by way of a capacitive element. In the receiver branch a switch responsive to a preselected signal level in the transmitter branch disconnects the feedback path of the operational amplifier from the capacitive element which provides protection against singing and which helps to ensure a relatively flat frequency response for sidetone irrespective of loop length.

43. 发明授权

US2858371A Telephone subscribers' apparatus 失效
标题翻译：电话用户设备
公开(公告)号：US2858371A
公开(公告)日：1958-10-28
申请号：US44018554
申请日：1954-06-29
申请人： GEN ELECTRIC CO LTD
发明人： FREDERICK JONES ARTHUR
IPC分类号： H04M1/76
CPC分类号： H04M1/76

44. 发明授权

US2785231A Telephone set with amplifier 失效
标题翻译：带放大器的电话机
公开(公告)号：US2785231A
公开(公告)日：1957-03-12
申请号：US41244854
申请日：1954-02-25
申请人： BELL TELEPHONE LABOR INC
发明人： CHASE ALBERT J
IPC分类号： H04M1/76
CPC分类号： H04M1/76

45. 发明授权

US1328326A Electric circuit 失效
标题翻译：电路
公开(公告)号：US1328326A
公开(公告)日：1920-01-20
申请号：US1913775632
申请日：1913-06-25
申请人： COOPER HEWITT PETER
发明人： COOPER HEWITT PETER
IPC分类号： H04M1/76
CPC分类号： H04M1/76

46. 发明授权

US10432164B2 Impedance matching circuit of communication apparatus 有权
公开(公告)号：US10432164B2
公开(公告)日：2019-10-01
申请号：US15835148
申请日：2017-12-07
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人： Sun Woo Kong , Cheol Ho Kim , Bong Hyuk Park , Hui Dong Lee
IPC分类号： H03H7/38 , H03H7/40 , H03F3/19 , H03F1/56 , H01F27/29 , H03H11/32 , H03H7/09 , H03F3/193 , H04M1/76
摘要： A matching circuit in a communication apparatus may comprise a first inductor disposed at a primary side of a transformer; a second inductor disposed at a secondary side of the transformer; and an impedance element connected to the first inductor and the second inductor. Also, a first terminal of the first inductor may be connected to an input terminal of the transformer, a second terminal of the first inductor may be connected to a common node connected to a ground, a first terminal of the second inductor may be connected to an output terminal of the transformer, a second terminal of the second inductor may be connected to the common node, a first terminal of the impedance element may be connected to the common node, and a second terminal of the impedance element may be connected to the ground.

47. 发明申请

US20180167048A1 IMPEDANCE MATCHING CIRCUIT OF COMMUNICATION APPARATUS 审中-公开
公开(公告)号：US20180167048A1
公开(公告)日：2018-06-14
申请号：US15835148
申请日：2017-12-07
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人： Sun Woo KONG , Cheol Ho KIM , Bong Hyuk PARK , Hui Dong LEE
IPC分类号： H03H7/40 , H03F3/19 , H03F1/56 , H04M1/76 , H01F27/29 , H03H11/32 , H03H7/09
CPC分类号： H03H7/40 , H01F27/29 , H03F1/565 , H03F3/19 , H03F3/193 , H03F2200/222 , H03F2200/492 , H03F2200/534 , H03F2200/541 , H03H7/09 , H03H7/38 , H03H11/32 , H04M1/76
摘要： A matching circuit in a communication apparatus may comprise a first inductor disposed at a primary side of a transformer; a second inductor disposed at a secondary side of the transformer; and an impedance element connected to the first inductor and the second inductor. Also, a first terminal of the first inductor may be connected to an input terminal of the transformer, a second terminal of the first inductor may be connected to a common node connected to a ground, a first terminal of the second inductor may be connected to an output terminal of the transformer, a second terminal of the second inductor may be connected to the common node, a first terminal of the impedance element may be connected to the common node, and a second terminal of the impedance element may be connected to the ground.

48. 发明授权

US09319510B2 Personalized bandwidth extension 有权
标题翻译：个性化带宽扩展
公开(公告)号：US09319510B2
公开(公告)日：2016-04-19
申请号：US13768946
申请日：2013-02-15
申请人： Qualcomm Incorporated
发明人： Lae-Hoon Kim , Sang-Uk Ryu , Jongwon Shin
IPC分类号： H04M1/76 , H04M3/22 , H04M9/08 , G10L21/038 , G10L17/00
CPC分类号： H04M3/22 , G10L17/00 , G10L21/038 , H04M9/08
摘要： A personalized (i.e., speaker-derivable) bandwidth extension is provided in which the model used for bandwidth extension is personalized (e.g., tailored) to each specific user. A training phase is performed to generate a bandwidth extension model that is personalized to a user. The model may be subsequently used in a bandwidth extension phase during a phone call involving the user. The bandwidth extension phase, using the personalized bandwidth extension model, will be activated when a higher band (e.g., wideband) is not available and the call is taking place on a lower band (e.g., narrowband).
摘要翻译：提供个性化（即，可引发扬声器）带宽扩展，其中用于带宽扩展的模型被个性化（例如，定制）给每个特定用户。执行训练阶段以生成针对用户个性化的带宽扩展模型。在涉及用户的电话呼叫期间，该模型可以随后用于带宽扩展阶段。当较高频带（例如，宽带）不可用并且呼叫正在较低频带（例如，窄带）上发生时，使用个性化带宽扩展模型的带宽扩展阶段将被激活。

49. 发明授权

US09153913B2 Methods and systems for compensating for alien crosstalk between connectors 有权
标题翻译：补偿连接器外部串扰的方法和系统
公开(公告)号：US09153913B2
公开(公告)日：2015-10-06
申请号：US13758338
申请日：2013-02-04
申请人： ADC Telecommunications, Inc.
发明人： Bernard Harold Hammond, Jr.
IPC分类号： H04M1/76 , H01R13/66 , H04B3/32 , H01R13/6466 , H01R13/719 , H04B3/487
CPC分类号： H01R13/6466 , H01R13/6581 , H01R13/6633 , H01R13/6658 , H01R13/719 , H01R24/64 , H04B3/32 , H04B3/487
摘要： The present invention relates to methods and systems for minimizing alien crosstalk between connectors. Specifically, the methods and systems relate to isolation and compensation techniques for minimizing alien crosstalk between connectors for use with high-speed data cabling. A frame can be configured to receive a number of connectors. Shield structures may be positioned to isolate at least a subset of the connectors from one another. The connectors can be positioned to move at least a subset of the connectors away from alignment with a common plane. A signal compensator may be configured to adjust a data signal to compensate for alien crosstalk. The connectors are configured to efficiently and accurately propagate high-speed data signals by, among other functions, minimizing alien crosstalk.
摘要翻译：本发明涉及用于最小化连接器之间的外来串扰的方法和系统。具体地说，该方法和系统涉及用于最小化用于高速数据布线的连接器之间的外来串扰的隔离和补偿技术。一个框架可以配置为接收多个连接器。屏蔽结构可以被定位成将连接器的至少一个子集彼此隔离。连接器可以被定位成使连接器的至少一个子集远离与公共平面的对准。信号补偿器可以被配置为调整数据信号以补偿外部串扰。连接器被配置为通过除其他功能之外有效地和精确地传播高速数据信号，使外来串扰最小化。

50. 发明申请

US20130223620A1 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：US20130223620A1
公开(公告)日：2013-08-29
申请号：US13641758
申请日：2011-10-20
申请人： Zhuwei Yu
发明人： Zhuwei Yu
IPC分类号： H04M1/76
CPC分类号： H03H11/30 , H03H7/40 , H04M1/76
摘要： A method and circuit for matching impedance, wherein, a peripheral impedance detection module detects the user telephone impedance and outputs information about the user telephone impedance; an analog switch handover module provides an impedance matching path between the user telephone impedance and an impedance matching module according to information about the user telephone impedance output by the peripheral impedance detection module; the impedance matching module provides a corresponding impedance to match the user telephone impedance through the impedance matching path provided by the analog switch handover module. The above-mentioned technical scheme realizes the impedance matching when communicating between a wireless access box and telephones with different impedance modes. The matching process is automatic and flexible and does not need the manual configuration, and the realization technology is simple and reliable, and the cost is low.
摘要翻译：一种用于匹配阻抗的方法和电路，其中，外围阻抗检测模块检测用户电话阻抗并输出关于用户电话阻抗的信息; 根据关于由外围阻抗检测模块输出的用户电话阻抗的信息，模拟切换切换模块在用户电话阻抗和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阻抗。上述技术方案在无线接入盒和具有不同阻抗模式的电话之间进行通信时实现阻抗匹配。匹配过程自动灵活，不需要手动配置，实现技术简单可靠，成本低廉。

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