发明名称 |
Ring communication system data packets reusable a variable number of times |
摘要 |
Communication between a plurality of data terminals (101(1) to 101(b)) serially interconnected with a main terminal (102) is provided by data frames or packets having a data portion for accommodating a burst of data preceeded by a header portion for accommodating address data followed by an empty/full "flag" bit indicating whether the addressee station has withdrawn the data burst. If a terminal has a data burst to send, it locates an empty packet, inserts the addressee designation in the packet subsequent to any prior address that the packet might contain, interposes delay in the passage therethrough of the packet so that the duration is increased to accommodate the new address and overwrites the data burst into the data portion. The main terminal detects when the data burst is withdrawn and signals the originating terminal to remove the data delay.
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申请公布号 |
US4236245(A) |
申请公布日期 |
1980.11.25 |
申请号 |
US19790030811 |
申请日期 |
1979.04.17 |
申请人 |
BELL TELEPHONE LABORATORIES INC |
发明人 |
FREENY, STANLEY L;LARSEN, ARTHUR B;PEDERSEN, THOMAS J |
分类号 |
H04J3/24;H04L12/43;(IPC1-7):H04J6/02 |
主分类号 |
H04J3/24 |
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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