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公开(公告)号：JP2014072709A
公开(公告)日：2014-04-21
申请号：JP2012217347
申请日：2012-09-28
发明人： SAKURAI YUJI , SHIROSHITA TAKASHI
摘要： PROBLEM TO BE SOLVED: To realize impedance matching with high accuracy while also reducing work load during impedance matching.SOLUTION: When adjusting the matching of a hybrid circuit H, an adjustment signal transmission unit AS sends out an adjustment signal Sa in place of a transmission signal Ss. When adjusting the matching, a residual echo detection unit ED detects a residual echo level pertaining to the adjustment signal Sa included in a received talk signal which has been outputted from an echo canceller EC. When adjusting the matching, an impedance matching adjustment unit IMA switches over a plurality of matching circuits Z1-Zn provided in the hybrid circuit H and used for impedance matching purpose to sequentially select one, acquires a residual echo level detected by the residual echo detection unit ED for each of the matching circuits Z1-Zn, and selects one of the matching circuits Z1-Zn whose residual echo level is smallest as a matching circuit for an analog telephone line L.
摘要翻译： 要解决的问题：实现阻抗匹配，同时降低阻抗匹配期间的工作负载。解决方案：调整混合电路H的匹配时，调整信号发送单元AS发送调整信号Sa代替传输 信号Ss。 当调整匹配时，残留回波检测单元ED检测与从回波消除器EC输出的接收到的通话信号中包括的调整信号Sa相关的残留回波电平。 当调整匹配时，阻抗匹配调整单元IMA切换设置在混合电路H中并用于阻抗匹配目的的多个匹配电路Z1-Zn，以依次选择一个，获取残留回波检测单元检测到的残留回波电平 ED，并且选择剩余回波电平最小的匹配电路Z1-Zn中的一个作为用于模拟电话线L的匹配电路。
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4.发明专利
公开(公告)号：JP2011519218A
公开(公告)日：2011-06-30
申请号：JP2011505461
申请日：2009-04-09
申请人： アルカテル−ルーセント
发明人： ボウジディ，ジャン−ピエール
摘要： 本発明は、双方向信号伝送における遠隔の受信信号とローカル伝送信号の間の近端漏話を減衰させる方法であって、前記伝送信号と受信信号の間に非相関関係を提供するために、アナログ自動フィードバック駆動式補正ループを作製するステップを含む方法、および前記方法を可能にするハイブリッド回路に関する。
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公开(公告)号：JP2010531601A
公开(公告)日：2010-09-24
申请号：JP2010514018
申请日：2008-06-10
摘要： 本発明は単一ポート信号リピータに関する。 このリピータは、通信手段（３）と並列に接続され、通信手段（３）上に１つのアクセス・ポイント（５）しか必要としない。 このリピータ（４）は増幅器、ハイブリッド回路、およびフィードバックを含み、線路を遮断しなければならず、かつチャネルへの２つのアクセス・ポイントを必要とする従来のリピータの欠点なしに、導電性媒体上に構成される通信の有効範囲および伝送容量を増大させる。
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公开(公告)号：JP4482177B2
公开(公告)日：2010-06-16
申请号：JP16421899
申请日：1999-06-10
申请人： アルカテル−ルーセント
发明人： ペーター・パウル・フランス・レウセンス
CPC分类号： H04L27/0002 , H04B3/02 , H04Q2213/13034 , H04Q2213/1319 , H04Q2213/13199 , H04Q2213/13302 , H04Q2213/13305
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公开(公告)号：JP4163628B2
公开(公告)日：2008-10-08
申请号：JP2003573798
申请日：2003-02-26
发明人： ウルソン、アラン , ランダール、トールビョルン
摘要： In a transmitter/receiver for bidirectional communication with a transmission medium, the transmitter comprises an amplifier having an input terminal for signals to be transmitted, an output stage with output terminals coupled via resistors to the transmission medium, and a negative feedback circuit connected with its input terminals to the output terminals and with its output terminal to the input terminal of the amplifier. The receiver is connected with first input terminals to the output terminals of the output stage. A current mirror is connected with its input terminal to the input terminal of the amplifier output stage and with its output terminals via resistors across a load. The load is connected across second input terminals of the receiver. The receiver is adapted to extract signals received from the transmission medium by subtracting voltages between said second input terminals from voltages between said first input terminals.
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公开(公告)号：JP2007166109A
公开(公告)日：2007-06-28
申请号：JP2005358091
申请日：2005-12-12
发明人： MAEJIMA MASAYUKI , MAEDA MITSURU , UMEDA NAOKI
摘要： PROBLEM TO BE SOLVED: To enable to easily increase or decrease the number of branches by expanding a range where a decrease in impedance can be compensated, compared to a conventional example.
SOLUTION: Branch devices 3 are each provided with a pair of first connection terminals 10 to be connected to trunk lines 2; a pair of second connection terminals 11 connected to branch lines 2'; and an impedance converter 12 inserted between the first and second connection terminals 10 and 11, and allowing the branch lines 2' to have impedance higher than that of the trunk lines 2. Selection can be made by switching changeover switches SW1 and SW2, so that a resistance value in the impedance converter 12 may be the optimum value corresponding to the number of branch devices 3 to be inserted into the trunk lines 2. In this way, a range can be expanded where the decrease in impedance due to insertion of the branch devices 3 can be compensated, compared to the conventional example in which a branch device has a fixed resistance value, and the number of branches can be easily increased or decreased.
COPYRIGHT: (C)2007,JPO&INPIT摘要翻译： 要解决的问题：与传统的例子相比，通过扩大可以补偿阻抗减小的范围，能够容易地增加或减少分支数。 解决方案：分支装置3各自设置有一对要连接到主干线2的第一连接端子10; 连接到分支线路2'的一对第二连接端子11; 以及插入在第一和第二连接端子10和11之间的阻抗转换器12，并且允许支线2'具有比干线2的阻抗更高的阻抗。可以通过切换转换开关SW1和SW2来进行选择，使得 阻抗转换器12中的电阻值可以是对应于插入到主干线2中的分支装置3的数量的最佳值。以这种方式，可以扩大范围，其中由分支插入引起的阻抗减小 与分支装置具有固定电阻值的常规示例相比，可以补偿装置3，并且可以容易地增加或减少分支数。 版权所有（C）2007，JPO＆INPIT
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公开(公告)号：JP2005229571A
公开(公告)日：2005-08-25
申请号：JP2004304009
申请日：2004-10-19
CPC分类号： H04L5/1423 , H04L25/028 , H04L25/0292
摘要： PROBLEM TO BE SOLVED: To provide an active hybrid transformer circuit which is capable of operating at a high speed and has low linear distortion characteristics.
SOLUTION: In an active hybrid transformer circuit connected to both transmission and reception sides, a current driver 10 is connected to a transmission path circuit Z
L through a common connection point A of a load resistor 15 and a replica resistor 16 while a replica driver 11 is connected to the replica resistor 16 of which another connection point is directly connected to the receive side. The replica driver 10 may be formed by a DAC of a current output type. A current ratio of the replica driver and the current driver is selected at a predetermined value so as to prevent a transmission signal from leaking into the receive side.
COPYRIGHT: (C)2005,JPO&NCIPI摘要翻译： 要解决的问题：提供一种能够以高速操作并具有低线性失真特性的有源混合变压器电路。 解决方案：在连接到发送侧和接收侧的有源混合变压器电路中，电流驱动器10通过负载电阻器15的公共连接点A连接到传输路径电路Z
L 和复制电阻16，而副本驱动器11连接到复制电阻16，其中另一个连接点直接连接到接收侧。 复制驱动器10可以由电流输出型的DAC形成。 以预定值选择复制驱动器和当前驱动器的电流比，以防止发送信号泄漏到接收侧。 版权所有（C）2005，JPO＆NCIPI
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