Boots – shoes – and leggings
Patent
1980-04-15
1984-06-05
Thomas, James D.
Boots, shoes, and leggings
371 16, 1791752C, G06F 1100
Patent
active
044532105
ABSTRACT:
A multiprocessor information processing system has an additional function to detect a fault occurring in a processor. A counter is provided for each of a plurality of processors for holding an associated fault supervising code. The code stored in the associated counter is periodically updated by the associated processor while the update status of the code is supervised on a cycle longer than the cycle of the updating period. If a fault occurs in one of the processors, the fault supervising code corresponding to that processor will not be updated. Thus, the faulty processor can be detected by periodically supervising the update status of the fault supervising code. The supervising operation can be carried out by software or hardware.
REFERENCES:
patent: 3471686 (1969-10-01), Connell
patent: 3908099 (1975-09-01), Borbas
patent: 4321666 (1982-03-01), Tasar
Toy, W. N., "Fault-Tolerant Design of Local ESS Processors", Proceedings of the IEEE, vol. 66, No. 10 (Oct. 1978), pp. 1126-1145.
"No. 2 EAX Type 2A Processor Complex", Rice & Stella, 1976 National Telecommunications Conference, Vol. II, pp. 27.2-1 to 27.2-3.
Inoue Kensuke
Suzuki Taihei
Clark David L.
Hitachi , Ltd.
Thomas James D.
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