Network interface

Details Network interface Network interface

1993-05-19

1994-10-18

Beausoliel, Jr., Robert W.

Excavating

371 82, G06F 1100

Patent

active

053575180

ABSTRACT:
A network interface, in particular for motor vehicles having at least two computers and having at least two bus lines ("0") includes by a monitoring circuit (100), which cooperates with an evaluation circuit to detect the operativeness of the bus lines and identify a faulty bus line and an emergency circuit (210,215) controlled by the monitoring circuit to connect the faulty bus line to an emergency potential. Even in the event of a short circuit, to the supply voltage U.sub.B or earth, of one of the bus lines connected to a terminating unit (OP1,R3; OP2,R4) or in the event of a defective driver stage (T10,T20) of a network substation connected to the bus lines, it is still possible to operate the comparator (K) of a receiver or signal evaluation circuit even with only one operational bus line. In this way, a particularly high operational reliability of the network interface is obtained.

REFERENCES:
patent: 4328583 (1982-05-01), Stodola
patent: 4405982 (1983-09-01), Ruhnau
patent: 4429384 (1984-01-01), Kaplinsky
patent: 4633473 (1986-12-01), Ratchford
patent: 4764759 (1988-08-01), Braun
patent: 4782300 (1988-11-01), Bonaccio
patent: 4792950 (1988-12-01), Volk
patent: 4929941 (1990-05-01), Lecocq
patent: 4947394 (1990-08-01), Nakajima
patent: 5031176 (1991-07-01), Magne
patent: 5050187 (1991-09-01), Ichie

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