发明名称 |
Information transmission system with modems coupled to a common communication medium |
摘要 |
A plurality of information processors are coupled by respective modems to a communication medium at points thereof. Transmission and reception of information signals among the modems are effected through a headed located at a predetermined point on the communication medium. A pilot signal generator is provided which sends out a pilot signal having a predetermined reference level through the headend to the communication medium. Each modem is arranged to properly adjust the gain of its transmitting amplifier according to a reception level of the pilot signal for an improvement of signal transmission quality and a reliable detection of a signal collision.
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申请公布号 |
US4617656(A) |
申请公布日期 |
1986.10.14 |
申请号 |
US19860814598 |
申请日期 |
1986.01.02 |
申请人 |
TOKYO SHIBAURA DENKI KABUSHIKI KAISHA |
发明人 |
KOBAYASHI, HIROSHI;HIROSE, TSUGUHIRO;HARUYAMA, HIDEAKI |
分类号 |
H04B3/04;H04B3/10;H04L12/28;H04L27/10;(IPC1-7):H04J1/02;H04J3/12 |
主分类号 |
H04B3/04 |
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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