- 专利标题： Telephone terminal, telephone system using telephone terminal and control method of telephone terminal
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申请号： US11239313申请日： 2005-09-30
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公开(公告)号： US20060067255A1公开(公告)日： 2006-03-30
- 发明人: Takeshi Horiuchi , Yoshihiro Uto , Toshiaki Takahashi
- 申请人： Takeshi Horiuchi , Yoshihiro Uto , Toshiaki Takahashi
- 专利权人： KABUSHIKI KAISHA TOSHIBA
- 当前专利权人： KABUSHIKI KAISHA TOSHIBA
- 优先权： JP2004-288891 20040930
- 主分类号： H04B3/20
- IPC分类号： H04B3/20
摘要：
A telephone terminal includes a receiving detector which detects a signal level of a receiving voice signal incoming from the main device, a transmitting detector which detects a signal level of a transmitting voice signal to transmit it to the main device, an adjustment device to adjust the transmitting voice signal and a controller which obtains a control value capable of switching a communication state from a receiving state to a transmitting state to make an acoustic echo to be added to the transmitting voice signal be minimum, based on each signal level of the receiving voice signal and signal level of the transmitting voice signal, and controls the adjustment device based on the control value.
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