Method and apparatus for obtaining high integrity and availabili

Details Method and apparatus for obtaining high integrity and availabili Method and apparatus for obtaining high integrity and availabili

1995-05-15

1998-09-01

Chung, Phung M.

Excavating

371 201, 370242, G06F 1108

Patent

active

058020772

ABSTRACT:
A multi-channel system (31) which monitors and identifies faults experienced by elements of the system is provided in accordance with the present invention. The multi-channel system comprises a plurality of line replaceable units (30 or 38) and independent control channels (40, 42 and 44) coupled to a global bus (34). The control channels and the line replaceable units are coupled to the global bus such that each computer channel and each line replaceable unit is a, transmitter that transmits messages via the global bus. Each channel contains a plurality of lanes (46, 48 and 50) coupled by a private bus (56), wherein each lane comprises a power supply (52), a processor (54) and an interface (60) to the global bus. However, only one lane of each channel, i.e. the command lane, may transmit messages via the global bus. The processor of each lane of each channel generates a channel majority opinion for each transmitter connected to the global bus that indicates whether a majority of the channels have detected a fault in the transmitter. To determine the channel majority opinion, the processor for each lane of the channel must first generate a lane majority opinion of the channel that indicates whether a majority of the lanes of the channel have detected a fault in the transmitter communicating via the global bus. The command lane of each channel then transmits the lane majority opinion of the channel to each of the other channels via the global bus such that each lane of each channel receives the lane majority opinion generated by the command lane of each of the other channels.

REFERENCES:
patent: 5349654 (1994-09-01), Bond et al.
patent: 5550736 (1996-08-01), Hay et al.

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