| 摘要 |
PROBLEM TO BE SOLVED: To judge the possibility of a duplicated prize without relation with shipping of inventory prizes in addition to judging the duplicated prize utilizing conventional purchase confirmation data. SOLUTION: (A) The purchase confirmation data D1 recorded in relation with an identification code C about each prize is rewritten so that the confirmation data D1 about the prize may show a purchased state when each prize is purchased (a1) and so that all the pieces of confirmation data D1 may show un-purchased state when all or a part of the purchased inventory prizes are shipped (a2). (B) Data of the number of purchasing times D2 recorded in connection with the identification code C about each prize is rewritten so that the data D2 about the prize may show the number of total purchasing times within a set period whenever each prize is purchased in the optional set period (b1) and so that all the pieces of the data D2 may be reset and rewrite when the set period has passed (b2). COPYRIGHT: (C)2006,JPO&NCIPI
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