Central computer backup system utilizing localized data bases
Patent 4710870 Issued on December 1, 1987. Estimated Expiration Date: 
July 10, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 10, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesElectronic cash register for totalizing sales data on a time zone basis Patent #: 4186439 InventorsAssigneeApplicationNo. 06/753619 filed on 07/10/1985US Classes:714/6Redundant stored data accessed (e.g., duplicated data, error correction coded data, or other parity-type data)ExaminersPrimary: Zache, Raulfe B.Attorney, Agent or FirmInternational ClassesG06F 11/14 (20060101)G06F 11/16 (20060101) G06F 11/00 (20060101) AbstractA distributed information backup system is disclosed. The inventive backup system includes a first computer which accesses data from a central data base and periodically distributes the data to a predetermined multiplicity of other computers upon request therefrom. Each of the other computers receives only a portion of the distributed data and thereupon updates a local data base with the data each receives. When the central data base is inaccessible, a data base user accesses one of the local data bases through one of the multiplicity of computers to obtain the data which it would ordinarily obtain from the central data base to perform his tasks.Other References
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