发明名称 |
Preferential TDM carrier transmission system for order telegrams - uses priority identification switch in conjunction with AND=OR logic gates liberating transmitter function |
摘要 |
<p>Each transmitter is controlled by a transmission time generator and HF detector (pref. squelch filter). Fixed-frequency pulses trigger the transmission of an order telegram via an AND gate and OR gate only when no HF is detected. A monitor circuit inhibits the HF detector after a delay of about 100 to 200 ms. The transmitter is triggered only if the detector has emitted no signal for a min. duration of at least two chain lengths (50 to 75 ms). A counter counts the number of inhibitions of transmission by the HF detector, and is reset to zero by an end-of-transmission switch. The priority switch, memory AND and OR gates override the generator when necessary in favour of another transmitter.</p> |
申请公布号 |
BE894768(A1) |
申请公布日期 |
1983.02.14 |
申请号 |
BE19820209297 |
申请日期 |
1982.10.21 |
申请人 |
THEIMEG ELEKTRONIKGERATE G.M.B.H. & CO. |
发明人 |
B. PLUM;H.J. WUNDERER |
分类号 |
G08C15/00;(IPC1-7):08C/;04L/ |
主分类号 |
G08C15/00 |
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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