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1. 发明授权

US07050570B2 DTMF signal transmission method and communication apparatus 失效
公开(公告)号：US07050570B2
公开(公告)日：2006-05-23
申请号：US10782938
申请日：2004-02-23
申请人： Shinya Suzuki , Kimitoshi Takeuchi , Toru Yoshihara , Makoto Oohashi
发明人： Shinya Suzuki , Kimitoshi Takeuchi , Toru Yoshihara , Makoto Oohashi
IPC分类号： H04M3/00
CPC分类号： H04M3/42314 , H04L12/66 , H04M7/009 , H04M2201/38 , H04Q1/453
摘要： A communication apparatus connected to a PBX and an ATM network is provided with a DTMF signal detecting portion for detecting whether or not a DTMF signal is contained in a voice signal from the PBX, a DTMF signal monitoring portion, a DTMF cell generating portion for coding and sending out a DTMF signal, a DTMF cell decomposing portion for decoding a coded DTMF signal and a DTMF signal generating portion for generating a DTMF signal on the basis of the information content of a decoded DTMF signal and sending out this DTMF signal to the PBX, and the transmission side communication apparatus codes a DTMF signal in a specified form and transmits the DTMF signal and the reception side communication apparatus decodes the coded DTMF signal and, on the basis of this content information, restores the DTMF signal in a DTMF signal generating portion. By doing so, even in case of transmitting a DTMF signal by way of a communication apparatus performing a voice code compression, it is made possible for a reception side communication apparatus (PBX) to judge/recognize the DTMF signal without error.

2. 发明授权

US07532606B2 DTMF signal transmission method and communication apparatus 失效
标题翻译： DTMF信号传输方法和通信装置
公开(公告)号：US07532606B2
公开(公告)日：2009-05-12
申请号：US10782937
申请日：2004-02-23
申请人： Shinya Suzuki , Kimitoshi Takeuchi , Toru Yoshihara , Makoto Oohashi
发明人： Shinya Suzuki , Kimitoshi Takeuchi , Toru Yoshihara , Makoto Oohashi
IPC分类号： H04W4/00 , H04L12/66 , H04L12/28 , H04L12/56 , H04M3/00 , H04M5/00
CPC分类号： H04M3/42314 , H04L12/66 , H04M7/009 , H04M2201/38 , H04Q1/453
摘要： A communication apparatus connected to a PBX and an ATM network is provided with a DTMF signal detecting portion for detecting whether or not a DTMF signal is contained in a voice signal from the PBX, a DTMF signal monitoring portion, a DTMF cell generating portion for coding and sending out a DTMF signal, a DTMF cell decomposing portion for decoding a coded DTMF signal and a DTMF signal generating portion for generating a DTMF signal on the basis of the information content of a decoded DTMF signal and sending out this DTMF signal to the PBX, and the transmission side communication apparatus codes a DTMF signal in a specified form and transmits the DTMF signal and the reception side communication apparatus decodes the coded DTMF signal and, on the basis of this content information, restores the DTMF signal in a DTMF signal generating portion. By doing so, even in case of transmitting a DTMF signal by way of a communication apparatus performing a voice code compression, it is made possible for a reception side communication apparatus (PBX) to judge/recognize the DTMF signal without error.
摘要翻译：连接到PBX和ATM网络的通信装置设置有DTMF信号检测部分，用于检测来自PBX的语音信号中是否包含DTMF信号，DTMF信号监视部分，用于编码的DTMF信元生成部分并发送DTMF信号，用于解码DTMF信号的DTMF信元分解部分和用于根据解码的DTMF信号的信息内容生成DTMF信号的DTMF信号产生部分，并将该DTMF信号发送到PBX ，发送侧通信装置以规定的形式对DTMF信号进行编码，并发送DTMF信号，并且接收方通信装置对经编码的DTMF信号进行解码，并且根据该内容信息，以DTMF信号生成DTMF信号一部分。通过这样做，即使在通过执行语音代码压缩的通信装置发送DTMF信号的情况下，接收侧通信装置（PBX）也可以无错误地判断/识别DTMF信号。

3. 发明授权

US07062033B2 DTMF signal transmission method and communication apparatus 失效
公开(公告)号：US07062033B2
公开(公告)日：2006-06-13
申请号：US10782936
申请日：2004-02-23
申请人： Shinya Suzuki , Kimitoshi Takeuchi , Toru Yoshihara , Makoto Oohashi
发明人： Shinya Suzuki , Kimitoshi Takeuchi , Toru Yoshihara , Makoto Oohashi
IPC分类号： H04M3/00
CPC分类号： H04M3/42314 , H04L12/66 , H04M7/009 , H04M2201/38 , H04Q1/453
摘要： A communication apparatus connected to a PBX and an ATM network is provided with a DTMF signal detecting portion for detecting whether or not a DTMF signal is contained in a voice signal from the PBX, a DTMF signal monitoring portion, a DTMF cell generating portion for coding and sending out a DTMF signal, a DTMF cell decomposing portion for decoding a coded DTMF signal and a DTMF signal generating portion for generating a DTMF signal on the basis of the information content of a decoded DTMF signal and sending out this DTMF signal to the PBX, and the transmission side communication apparatus codes a DTMF signal in a specified form and transmits the DTMF signal and the reception side communication apparatus decodes the coded DTMF signal and, on the basis of this content information, restores the DTMF signal in a DTMF signal generating portion. By doing so, even in case of transmitting a DTMF signal by way of a communication apparatus performing a voice code compression, it is made possible for a reception side communication apparatus (PBX) to judge/recognize the DTMF signal without error.

4. 发明授权

US06700973B1 System for transmitting DTMF signal and communication equipment thereof 失效
标题翻译： DTMF信号发送系统及其通信设备
公开(公告)号：US06700973B1
公开(公告)日：2004-03-02
申请号：US09395778
申请日：1999-09-14
申请人： Shinya Suzuki , Kimitoshi Takeuchi , Toru Yoshihara , Makoto Oohashi
发明人： Shinya Suzuki , Kimitoshi Takeuchi , Toru Yoshihara , Makoto Oohashi
IPC分类号： H04M300
CPC分类号： H04M3/42314 , H04L12/66 , H04M7/009 , H04M2201/38 , H04Q1/453
摘要： A communication apparatus 1 or 2 connected to a PBX 4 or 5 and an ATM network 3, is provided with a DTMF signal detecting portion 102 for detecting whether or not a DTMF signal is contained in a voice signal from the PBX 4 or 5, a DTMF signal monitoring portion 103, a DTMF cell generating portion 105 for coding and sending out a DTMF signal, a DTMF cell decomposing portion 110 for decoding a coded DTMF signal and a DTMF signal generating portion 113 for generating a DTMF signal on the basis of the information content of a decoded DTMF signal and sending out this DTMF signal to the PBX 4 or 5, and the transmission side communication apparatus 1 or 2 codes a DTMF signal in a specified form and transmits the DTMF signal and the reception side communication apparatus 1 or 2 decodes the coded DTMF signal and, on the basis of this content information, restores the DTMF signal in a DTMF signal generating portion 113. By doing so, even in case of transmitting a DTMF signal by means of a communication apparatus performing a voice code compression, it is made possible for a reception side communication apparatus (PBX) to judge/recognize the DTMF signal without error.
摘要翻译：连接到PBX4或5和ATM网络3的通信设备1或2设置有DTMF信号检测部分102，用于检测来自PBX 4或5的语音信号中是否包含DTMF信号， DTMF信号监测部分103，用于编码和发送DTMF信号的DTMF信元产生部分105，用于解码DTMF信号的DTMF信元分解部分110和用于基于该DTMF信号产生DTMF信号的DTMF信号产生部分113 解码的DTMF信号的信息内容并将该DTMF信号发送到PBX 4或5，并且发送侧通信装置1或2以指定的形式对DTMF信号进行编码，并发送DTMF信号和接收侧通信装置1或 2解码编码的DTMF信号，并且基于该内容信息，在DTMF信号产生部分113中恢复DTMF信号。通过这样做，即使在通过通信方式发送DTMF信号的情况下执行语音代码压缩的接收方通信装置（PBX）能够无错误地判断/识别DTMF信号。

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