Data transmission control system

Details Data transmission control system Data transmission control system

1987-07-06

1989-02-07

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

3408255, H04J 326

Patent

active

048036811

ABSTRACT:
A control system attends to an orderly transmission of data over a time division multiplex data bus. Each time that a terminal wants to transmit data over the data bus, it files a request for data transmission with an arbiter circuit, which normally grants the requests on a first come, first serve basis. If there are simultaneous requests, the arbiter consults a table of priorities stored in its memory. The one of the simultaneous requests with the highest priority is served first.
Each terminal acknowledges the data which it receives. If the acknowledgment does not come back in a timely manner, the data is retransmitted.

REFERENCES:
patent: 4236245 (1980-11-01), Freeny et al.
patent: 4656627 (1987-04-01), Hasley et al.
patent: 4701911 (1987-10-01), Ulug
patent: 4707828 (1987-11-01), Yamada
patent: 4730250 (1988-03-01), Girard et al.
Mutliaccess Protocols in Packet Communication Systems Fouad A. Tobagi, IEEE Transactions on Communications, vol. COM-28 No. 4, Apr. 1980.

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