| 摘要 |
PROBLEM TO BE SOLVED: To provide a data management system for a game hall by which abnormality is surely detected regardless of a variation in operating state of a game machine. SOLUTION: In order to detect the abnormality of operation data, a reference value for detecting abnormality is set to each operation data. When an average during a past prescribed period, day of the week or time is set as this reference value, a proper reference value can be set following the variation of the operation data even though the operation data is varied. COPYRIGHT: (C)2004,JPO
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