发明公开
- 专利标题： Transmitting a voice signal and data on a single channel
- 专利标题（中）： 在单通道上传输语音信号和数据
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申请号： EP81305847申请日： 1981-12-11
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公开(公告)号： EP0055902A3公开(公告)日： 1982-08-04
- 发明人: Godbole, Vishwas R.
- 申请人： AMERICAN MICROSYSTEMS, INCORPORATED
- 专利权人： AMERICAN MICROSYSTEMS, INCORPORATED
- 当前专利权人： AMERICAN MICROSYSTEMS, INCORPORATED
- 优先权： US222702 19810105
- 主分类号： H04M11/06
- IPC分类号： H04M11/06 ; H04J03/16
摘要：
A method of and apparatus for the simultaneous transmission of voice and data information over the same PCM transmission channel. During periods when only voice information is to be transmitted, the analog voice information is sampled at a first sampling rate, thus providing a digitized voice rate equal to the transmission rate capability of the transmission channel. During periods when both voice and data are to be transmitted, the analog voice information is sampled at a second sampling rate less than the first sampling rate, thus allowing the merged voice and data information to have a total digitized transmission rate equal to the transmission rate capability of the transmission channel.
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