Data processing network with upgrading of files
Patent 5019963 Issued on May 28, 1991. Estimated Expiration Date: 
May 28, 2008. 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.
May 28, 2008. 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 ReferencesSoftware version management system Communication for version management in a distributed information service Version management system using plural control fields for synchronizing two versions of files in a multiprocessor system Patent #: 4875159 InventorsApplicationNo. 171315 filed on 03/21/1988US Classes:707/201Coherency (e.g., same view to multiple users)ExaminersPrimary: Heckler, Thomas M.Attorney, Agent or FirmForeign Patent References
International ClassG06F 013/38Foreign Application Priority Data1987-04-02 GBAbstractA data processing network in which a plurality of workstations such as personal computers (PC) (12) are connected to a host processor (11) and contain PC programs at particular levels for controlling tasks on the personal computers. The personal computers send a signal to the host when they are about to conduct a task indicating which data files they have and at what level. The host has an object library containing a copy of each disk file for each version of PC program. The host determines if the personal computer has the latest level data file for the version of program at that personal computer and, if it does not, sends a copy of the latest level data file to the personal computer to replace the down-level data file. Preferably, the host checks if the personal computer has all the data files it needs for the particular task and, if it does not and if it should because of the version of PC program stored at the PC, the host can load a copy of the missing file to the personal computer. The host does not have to contain a record of all the levels of all the programs of all the personal computers connected to it. However, by updating the object library in the host, this arrangement ensures that all personal computers connected to it are automatically brought to the latest authorized level of data files as are required by the personal computer.Other References
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