Title: System for transferring data between central units and controlled units

Abstract: A system is disclosed for directing orders to peripheral devices in a data processing system having duplicate central control units. In the event one of the central control units loses access to a peripheral device, and therefore cannot transmit orders to that peripheral device, the system enables an alternative route through the other central control unit to the same peripheral device.

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Inventors: Charpentier, Jean (Issy-les-Moulineaux, FR)
Cancian, Genevieve (Paris, FR)
Selz, Francois (Paris, FR)

Application Number: 458691
Filing Date: 1974-04-08
Publication_date: 1976-06-15
Assignee: International Standard Electric Corporation (New York, NY)
Primary Class(es): 714/10 370/217
Other Classes:
US Patent Ref:

3303474	Feb, 1967	Moore et al.	235/153.
3419849	Dec, 1968	Anderson et al.	340/172.
3503048	Mar, 1970	Avsan et al.	340/172.
3768074	Oct, 1973	Sharp et al.	340/172.
3806887	Apr, 1974	Schulte et al.	340/172.
3875390	Apr, 1975	Eccles	235/153.

Other Refs:
Primary Examiner: Ruggiero, Joseph F.
Assistant Examiner:
Attorney: Raden; J. B., Warner; D. P.