发明名称 |
DATA COMMUNICATION SYSTEM |
摘要 |
In a ring network (1) messages sent from any one of a group of stations (3) to all the remainder include an acknowledgement field (ACK) holding a count preset to equal the number of expected destination stations. Each destination station that successfully receives the message acknowledges by decreasing the count by 1; acknowledgement is withheld if an error is detected in the message or the station cannot accept it. Acknowledgement is performed by a circuit (17) in a loop-through path (15) in an interface unit (4) connecting the station to the network (1). The originating station checks in a circuit (28) if the final value of the count on its return is zero. If so, the originating station is assured that each expected destination has made a positive acknowledgement of successful receipt. |
申请公布号 |
DE3373252(D1) |
申请公布日期 |
1987.10.01 |
申请号 |
DE19833373252 |
申请日期 |
1983.04.25 |
申请人 |
INTERNATIONAL COMPUTERS LIMITED |
发明人 |
DEAN, STUART LESLIE;BELL, DONALD;O'CONNOR, STUART |
分类号 |
H04L1/00;H04L1/16;H04L1/18;H04L12/18;H04L12/433;(IPC1-7):H04L11/16 |
主分类号 |
H04L1/00 |
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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