Link control system communicating between terminals

Details Link control system communicating between terminals Link control system communicating between terminals

1989-02-27

1991-10-15

Fleming, Michael R.

Boots, shoes, and leggings

3649185, 3649339, 3649269, 36492691, 36492693, 3649352, 36493541, G06F 1336, G06F 1326, G06F 1120

Patent

active

050580574

ABSTRACT:
A communication system uses a two-wire circuit and includes a master terminal and a backup terminal, and a main file and a backup file along with associated link control devices coupled to a plurality of satellite terminals. Each link control device functions both as a monitor and as a communication controller with priority between the link control devices for each of the files and terminals to maintain operation of the system.

REFERENCES:
patent: 3886524 (1975-05-01), Appelt
patent: 4320467 (1982-03-01), Glass
patent: 4366653 (1982-12-01), Cedolin et al.
patent: 4456956 (1984-06-01), El-Gohary et al.
patent: 4468750 (1984-08-01), Chamoff et al.
patent: 4502120 (1985-02-01), Ohnishi et al.
patent: 4596012 (1986-06-01), Reed
patent: 4626844 (1986-12-01), Mann et al.
patent: 4817091 (1989-03-01), Katzman et al.

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