File backup system
February 27, 2009. 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 References 3866182 Redundant memory for point of sale system Electronic cash register system with consolidating means Memory control circuit for subsystem controller Product sales data processing system for on-line connection to host CPU Fail memory equipment in memory tester Master ECR for interrogating the state and data contents of a slave ECR POS terminal device Patent #: 4859838 InventorsAssigneeApplicationNo. 316272 filed on 02/27/1989US Classes:707/202, Recoverability705/22, Inventory monitoring707/201, Coherency (e.g., same view to multiple users)707/204, Archiving or backup714/6, Redundant stored data accessed (e.g., duplicated data, error correction coded data, or other parity-type data)714/15, State recovery (i.e., process or data file)902/22TERMINAL* REGISTERS TRANSACTION* (E.G., POINT OF SALE TERMINAL*)ExaminersPrimary: Shaw, Gareth D.Assistant: Kulik, Paul V. Attorney, Agent or FirmForeign Patent References
International ClassesG06F 015/21G06F 012/16 Foreign Application Priority Data1988-03-25 JPAbstractA file backup system for POS data includes a master terminal and a backup terminal along with a master file and a backup file, all of which are coupled to a plurality of satellite terminals. A file controller is provided for each of the files. When one of the files is down, the master file is capable of copying the contents of the down file while simultaneously responding to a request from any terminal and controlling the transfer of data without stopping the operation of the system.Other References
| |
