发明授权
- 专利标题： Idle suppression and signal threshold determination therefor
- 专利标题（中）： 空闲抑制和信号阈值判定
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申请号： US877852申请日： 1997-06-18
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公开(公告)号： US5878119A公开(公告)日： 1999-03-02
- 发明人: Adam Chellali , Andrew McGregor
- 申请人： Adam Chellali , Andrew McGregor
- 申请人地址： CAX Montreal
- 专利权人： Northern Telecom Limited
- 当前专利权人： Northern Telecom Limited
- 当前专利权人地址： CAX Montreal
- 主分类号： H04N1/32
- IPC分类号： H04N1/32 ; H04L5/14 ; H04L5/16 ; H04M3/00 ; H04M11/06 ; H04N1/00 ; H04N1/333 ; H04Q11/04 ; H04M11/00
摘要：
A compression technique is used to suppress the idle or silent portion of both stations in a facsimile transmission. Facsimile transmission is a half-duplex protocol resulting in considerable idle time for either the called terminal or the calling terminal. The invention provides a signal level threshold for each station whereby signals above the threshold are allowed to pass through while signal levels below threshold are not, resulting in more efficient network bandwidth utilization.