1983-11-14
1987-02-24
Atkinson, Charles E.
Excavating
364200, G06F 1114
Patent
active
046463003
ABSTRACT:
The present disclosure relates to a communications method for communicating data over a data channel that comprises two unidirectional communication lines. A protocol which is set of predetermined control characters is used by the communications method and the protocol is used for transferring data between communicating devices. The communications method combines acknowledgements which are control characters of the protocol transmitted in between messages, piggy-backing which is the combining of control characters of the protocol and data messages, and hold-offs with long time outs which cause the devices to enter a standby idle mode waiting for a responsive control character of the protocol. The communications system and method combines these features so as to permit improved efficient flow control of data information between the communicating devices.
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patent: 4393501 (1983-07-01), Kellogg et al.
Davies et al., Communication Network for Computers, John Wiley & Sons, London, 1973, pp. 177-236, 382-421.
Goodman William R.
Mayfield Richard B.
Tawshunsky Ted
Zardiackas Fredrick L.
Atkinson Charles E.
Tandem Computers Incorporated
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