发明名称 |
Optical communication system |
摘要 |
<p>An optical communication system including repeaters (5-1 to 5-n) which return a preamble signal to a receive line (2) as soon as it detects a carrier on a transmit line (1) of a single line optical bus (1,2,6). Therefore, transmission equipment (7-1 to 7-m) can confirm data transmission quickly because the time delay between data transmission and its confirmation is decreased. The repeater (5-1 to 5-n) also monitors a time delay associated with the return through a return loop (6) of the transmitted data, and produces and transmits a failure signal when the time delay is longer than a predetermined value. The system also includes an optical transceiver (10-1 to 10-m) connected between the optical bus and the transmission equipment (7-1 to 7-m) which converts optical signals into electrical signals and vice versa and also adds the preamble signal to the front of data to be transmitted.</p> |
申请公布号 |
EP0399571(B1) |
申请公布日期 |
1997.12.10 |
申请号 |
EP19900113260 |
申请日期 |
1985.07.25 |
申请人 |
FUJITSU LIMITED |
发明人 |
OKADA, AKIHIRO;SUZUKI, SHUN;TAKAHASHI, OSAMU;SHIKATA, KIYOTAKA |
分类号 |
H04B10/27;H04B10/278;H04L7/027;H04L7/04;H04L12/413;(IPC1-7):H04L12/28;H04B10/12 |
主分类号 |
H04B10/27 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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