Excavating
Patent
1997-06-26
1999-11-30
Canney, Vincent P.
Excavating
G06F 1100
Patent
active
059930551
ABSTRACT:
A fault tolerant computer system includes a number of lockstep subsystems, each of which comprises a parallel input signature generator, used for data compression to allow practical comparison of the operation of internal modules of the lockstep subsystem, and a logic analyzer which stores the outputs of the internal modules of the lockstep subsystem. A signature comparator is connected to receive the signatures from the signature generators of the individual lockstep subsystems. The signature comparator generates a trigger signal for triggering the logic analyzers on detecting a difference in the signatures. The logic analyzers store enough states to include the first difference from a module following a detected difference in the signature outputs. The logic analyzer traces are searched automatically after an out-of-sync event to locate the first difference in operation and to determine which internal module provided the faulty output and then that module is labelled as broken.
REFERENCES:
patent: 4807228 (1989-02-01), Dahbura et al.
patent: 5630048 (1997-05-01), La Joie et al.
Patent Abstracts Of Japan; vol. 10, No. 086 (P-443), Apr. 4, 1986.
IEEE Journal Of Solid-State Circuits, vol. 27, No. 1, Jan. 1992, pp. 4-16.
Canney Vincent P.
Sun Microsystems Inc.
LandOfFree
Faulty module location in a fault tolerant computer system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Faulty module location in a fault tolerant computer system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Faulty module location in a fault tolerant computer system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1663883