| 摘要 |
PROBLEM TO BE SOLVED: To enable a user to select desired data information easily and quickly without losing visual operation feelings while effectively utilizing hardware resources of a memory or the like. SOLUTION: When a continuous data group determination means 5a determines that no data information of continuous data group numbers is recorded for each data group, a data information reading control means 5a reads data information having relevant data group numbers added thereto en bloc for every one data group from a recording medium by a data information reading means 2 to stored them in a data information recording means 5c. COPYRIGHT: (C)2009,JPO&INPIT
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