发明申请
US20090245475A1 METHOD FOR IDENTIFYING A DEVICE TRANSMITTING AN ECHO SIGNAL, ECHO SOURCE IDENTIFYING METHOD FOR IDENTIFYING ECHO SOURCE, MEASURING APPARATUS FOR IDENTIFYING A SOURCE OF AN ECHO, AND ECHO SOURCE IDENTIFYING APPARATUS
有权
用于识别发送信号信号的设备的方法，用于识别ECHO信号源的ECHO源识别方法，用于识别ECHO的源的测量装置和ECHO源鉴别装置
- 专利标题： METHOD FOR IDENTIFYING A DEVICE TRANSMITTING AN ECHO SIGNAL, ECHO SOURCE IDENTIFYING METHOD FOR IDENTIFYING ECHO SOURCE, MEASURING APPARATUS FOR IDENTIFYING A SOURCE OF AN ECHO, AND ECHO SOURCE IDENTIFYING APPARATUS
- 专利标题（中）： 用于识别发送信号信号的设备的方法，用于识别ECHO信号源的ECHO源识别方法，用于识别ECHO的源的测量装置和ECHO源鉴别装置
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申请号： US12407111申请日： 2009-03-19
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公开(公告)号： US20090245475A1公开(公告)日： 2009-10-01
- 发明人: Takeshi Otani , Yasuji Ota
- 申请人： Takeshi Otani , Yasuji Ota
- 申请人地址： JP Kawasaki-shi
- 专利权人： FUJITSU LIMITED
- 当前专利权人： FUJITSU LIMITED
- 当前专利权人地址： JP Kawasaki-shi
- 优先权： JP2008-078663 20080325
- 主分类号： H04M3/22
- IPC分类号： H04M3/22
摘要：
A method for identifying among a plurality of devices, through which a voice communication path is connected, a device transmitting an echo signal onto the voice communication path, includes transmitting a predetermined signal to each of the devices from a predetermined portion on the voice communication path, receiving a response signal for the predetermined signal from each of the devices, measuring a period of time for the predetermined signal to travel from the predetermined portion to each of the devices and for the response signal to travel back to the predetermined portion, monitoring a upstream signal and a downstream signal traveling on the voice communication path, extracting an eco component from the downstream signal to determine an echo delay time, and comparing the period of time and the echo delay time to determine a device which causes the echo signal.
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