Transmission equipment

Details Transmission equipment Transmission equipment

1994-10-06

1996-06-25

Beausoliel, Jr., Robert W.

Boots, shoes, and leggings

39518307, 3642683, 3642284, G06F 1134, G06F 100

Patent

active

055309496

ABSTRACT:
A transmission equipment comprising a center management device collecting data from units connected to subscriber terminals. The center management device includes two processing units and a control unit for controlling operational states of the first and second processing unit in such a way that when one of the two processing units is working, the other of the two processing units is in a standby state. The two processing units process the same data by using a data backup unit whereby all of the units can be made by hardware which may be easily replaced or added. Alternatively, each unit may have a program downloading unit so that if a new function is added or new unit is added, the program in the unit may be down loaded to the center management device.

REFERENCES:
patent: 4511982 (1985-04-01), Kurakake
patent: 4751702 (1988-06-01), Beier et al.
patent: 4775976 (1988-10-01), Yokoyama
patent: 4823256 (1989-04-01), Bishop et al.
patent: 4864557 (1989-09-01), Morton et al.
patent: 4894828 (1990-01-01), Novy et al.
patent: 5121486 (1992-06-01), Kurihara et al.
patent: 5193176 (1993-03-01), Brandin
patent: 5276860 (1994-01-01), Fortier et al.

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