Polling network communication system having transmission request

Details Polling network communication system having transmission request Polling network communication system having transmission request

1988-12-20

1990-05-08

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 858, 370 951, H04J 316

Patent

active

049244612

ABSTRACT:
In a sequential polling type communication network system including a master station, a first channel, a second channel, and at least two slave stations, the master station includes request registration units for registering data transmission requests from slave stations during a data transmission by another slave station, and an interrupt polling unit for polling the slave station which has issued the data transmission request after completion of the data transmission or completion of a polling of a slave station, and the slave station includes a unit for responding to a polling during the data transmission, and transitting a data transmission request when data to be transmitted exists, and for responding to the interrupt polling from the master station, and transmitting the data to the master station until the data transmission is completed.

REFERENCES:
patent: 4726017 (1988-02-01), Krum et al.
patent: 4742512 (1988-05-01), Akashi et al.
patent: 4809268 (1989-02-01), Tejima et al.

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