Information processing apparatus for transmitting information am

Details Information processing apparatus for transmitting information am Information processing apparatus for transmitting information am

1995-02-03

1997-02-18

Safourek, Benedict V.

Multiplex communications

Channel assignment techniques

Polling

359120, 359124, 370462, 370489, H04B 1020

Patent

active

056047487

ABSTRACT:
An information processing apparatus transmits data among a plurality of nodes connected to a common transmission line. An arbiter selectively gives use permission, to use the common transmission line for transmitting data, to one of the nodes that requests the use permission on the basis of at least a use request therefor. A data transmission state detector detects the data transmission state on the common transmission line by monitoring for a separate signal on the common transmission line, and notifies the detected state to the arbiter. The arbiter then can use the detected state to give use permission to a requesting node, for example when plural requests are overlappingly received. Advantageously, the separate signal is either an identifier which was added to data and indicates an end of that data, or an identifier that indicates that a current data transmission will be finished after the lapse of a predetermined time.

REFERENCES:
patent: 5303391 (1994-04-01), Simcoe et al.
patent: 5379291 (1995-01-01), Herzberg et al.
patent: 5402421 (1995-03-01), Hayasaka et al.
patent: 5420985 (1995-05-01), Cantrell et al.
IBM Tech. Disc. Bull. , vol. 24, No. 10, Mar 1982, pp. 5188-5190, Blum, "Full Use Of Transfer Cycles In Computers".

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