Multiplex communications – Wide area network – Packet switching
Patent
1987-08-18
1990-01-30
Orsino, Joseph A.
Multiplex communications
Wide area network
Packet switching
3408255, H04J 302
Patent
active
048978345
ABSTRACT:
A bit oriented communications network includes a plurality of nodes interconnected by a broadcast communications medium. Each node samples inputs connected to it and broadcasts the values of those inputs. All of the nodes then monitor the broadcasts and map selected bits to outputs connected locally through an output mapping process. Connections are established between inputs and outputs by the output mapping process, and such connections may be changed simply by changing the output mapping selections. Both the input and output bits may be either physical devices or, as described in a second embodiment, may be exchanged with an external system through a shared memory. A Dynamic Time Division Multiple Access (DTDMA) time slot allocation scheme is used to synchronize transmissions from each node in a round robin fashion. Each node is allocated one time slot for transmission and maintains a current time slot value in a gap timer. The gap timers of all nodes are synchronized by monitoring a source address field in the round robin broadcasts.
REFERENCES:
patent: 4319338 (1982-03-01), Grudowski et al.
patent: 4354226 (1982-10-01), Flickinger et al.
patent: 4477882 (1984-10-01), Schumacher et al.
patent: 4550366 (1985-10-01), Toyama
patent: 4550380 (1985-10-01), Bukowski et al.
patent: 4577281 (1986-03-01), Bukowski et al.
patent: 4591967 (1986-05-01), Mattes et al.
patent: 4603394 (1986-07-01), Bukowski et al.
patent: 4635189 (1987-01-01), Kendall
patent: 4641307 (1987-02-01), Russell
patent: 4663704 (1987-05-01), Jones et al.
patent: 4680253 (1987-02-01), Fulton et al.
patent: 4725834 (1988-02-01), Chang et al.
Houser, Kirk D., "Data Highway Provides Database Management", Computer Design, Nov. 1983.
Morris, Henry M., "Distributed System Makes Wide Use of Bubble Memory", Control Engineering, Jan. 1982.
David R. Porter et al., "A High-Speed Fiber Optic Data Bus for Local Data Communications", IEEE Journal on Selected Areas in Communications, vol. SAC-1, No. 3, Apr. 1983, pp. 485 et seq.
Stanislav I. Samoylenko, "Time-Token Multiple Access", The New World of the Information Society Proceedings of the Seventh International Conference on Computer Communication, Sydney, Australia, Oct. 30, 1984.
Paul J. Nicholson, "The AGORA Fiber Optic Local Area Network-Information Marketplace", Synmark Sales Co., Oct. 1983.
Harwell Richard C.
Peterson James R.
Allen-Bradley Company Inc.
Orsino Joseph A.
Scutch III Frank M.
LandOfFree
Bit oriented communications network does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bit oriented communications network, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bit oriented communications network will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1928125