发明授权
US06961320B1 In-band transmission of TTY/TTD signals for systems employing low bit-rate voice compression
有权
对采用低比特率语音压缩的系统进行TTY / TTD信号的带内传输
- 专利标题： In-band transmission of TTY/TTD signals for systems employing low bit-rate voice compression
- 专利标题（中）： 对采用低比特率语音压缩的系统进行TTY / TTD信号的带内传输
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申请号： US09669283申请日： 2000-09-26
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公开(公告)号： US06961320B1公开(公告)日： 2005-11-01
- 发明人: Kumar Swaminathan , Udaya Bhaskar
- 申请人： Kumar Swaminathan , Udaya Bhaskar
- 申请人地址： US CA El Segundo
- 专利权人： Hughes Electronics Corporation
- 当前专利权人： Hughes Electronics Corporation
- 当前专利权人地址： US CA El Segundo
- 代理商 Craig Plastrik
- 主分类号： H04L5/22
- IPC分类号： H04L5/22 ; H04M3/42 ; H04M11/00 ; H04M11/06
摘要：
A method, system, and software product for transmitting TTY/TDD signals in a system employing low bit-rate voice compression are disclosed. The method includes receiving an input signal and generating a teletypewriter (TTY) indicator signal from the input signal. Whether or not the input signal is a TTY signal including a TTY character, is determined based on the TTY indicator signal. A TTY packet including the TTY character of the TTY signal is constructed and transmitted if the input signal is determined to be a TTY signal. A method, system, and software product for receiving and decoding TTY/TDD signal is also disclosed.
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