Common bus access system using plural configuration tables for f

Details Common bus access system using plural configuration tables for f Common bus access system using plural configuration tables for f

1981-10-26

1985-04-16

Thomas, James D.

Boots, shoes, and leggings

364300, 370 60, 370 85, 370 92, 371 11, 371 33, G06F 304, G06F 1516

Patent

active

045119589

ABSTRACT:
A data exchange system includes a plurality of data processing partners which communicate with each other via a common bus. Access to communication is sequentially transferred from one partner to another by the generation of an access-passing-on message which is transmitted via the common data bus. The access-passing-on message includes a source address identifying the address of the baton passing or token passing partner and a destination address identifying the address of that partner which is next to receive access to communication. If, after receiving access to communication, a partner has data available for transmission, it transmits a data information message including an address block identifying the type of information being transmitted and at least one data information block containing the data being transmitted. Each partner which receives the so transmitted data information message error-free transmits an acknowledgment message which identifies its own address and indicates that it has received an error-free transmission of the data information message.

REFERENCES:
patent: 4210780 (1980-07-01), Hopkins et al.
patent: 4281380 (1981-07-01), De Mesa et al.
patent: 4347563 (1982-08-01), Paredes
patent: 4402082 (1983-08-01), Cope
patent: 4410983 (1983-10-01), Cope
patent: 4451827 (1984-05-01), Kahn
R. M. Metcalfe and D. R. Boggs, "Ethernet: Distributed Packet Switching for Local Computer Networks", Comm. ACM 19:7, Jul. 1976, pp. 395-404.

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