发明授权
- 专利标题： Data transmission circuit capable of avoiding repeated reception and transmission of an identical transmission signal
- 专利标题（中）： 数据传输电路能够避免重复接收和发送相同的传输信号
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申请号： US842719申请日： 1992-02-27
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公开(公告)号： US5448588A公开(公告)日： 1995-09-05
- 发明人: Shigeaki Saito
- 申请人： Shigeaki Saito
- 申请人地址： JPX
- 专利权人： NEC Corporation
- 当前专利权人： NEC Corporation
- 当前专利权人地址： JPX
- 优先权： JPX3-032552 19910227
- 主分类号： H04L12/42
- IPC分类号： H04L12/42 ; H04L12/28
摘要：
In a transmission system comprising a plurality of data transmission circuits connected through a transmission line to form a loop, a local transmission signal is transmitted from a selected one of the data transmission circuits to the other data transmission circuits through the transmission line to be returned back to the selected data transmission circuit. The selected data transmission circuit interrupts the local transmission signal by detecting an identification signal preassigned to the selected data transmission circuit in a signal selecting circuit and by putting a switch circuit into an off-state during the local transmission signal sent from the selected data transmission circuit.
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