Multiplex communications – Wide area network – Packet switching
Patent
1986-10-06
1987-06-16
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
H04J 302
Patent
active
046740856
ABSTRACT:
A modular, hierarchical local area network is realizable by using existing twisted pair wiring, for example, in a building together with several elements known as network access units and hub units. A network access unit is connected to a device (microprocessor, display terminal, peripheral device, other local area network, information systems network or the like) in the local area network to give that device access to and from the network. The network access device is designed for simple daisy chaining with other devices to form a node when devices are colocated in the same section or room in the building. The hub unit is the network building block which permits extensive expansion of the local area network. It provides a connection point for access units or other hub units, performs collision detection operations, if necessary, and serves as a loop-back point for the network. Switchably connectable termination impedances and loop-backs are automatically passed to the appropriate points in the local area network. While most small local area networks are considered for intra-building applications, the present network is applicable to inter-building applications, also.
REFERENCES:
patent: 3856993 (1974-12-01), Closs et al.
patent: 4347498 (1982-08-01), Lee et al.
patent: 4551721 (1985-11-01), Kozlik
"A New Local Area Network Architecture Using a Centralized Bus" A. S. Acampora and M. G. Hluchyj, IEEE Communications Magazine, vol. 22, No. 8, Aug. 1984, pp. 12-21.
Aranguren William L.
Restrepo Mario A.
Sidey Michael J.
American Telephone and Telegraph Co.
AT&T Information Systems Inc.
Olms Douglas W.
Ranieri Gregory C.
Scutch III Frank M.
LandOfFree
Local area 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 Local area network, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Local area network will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-687965