| 摘要 |
<P>PROBLEM TO BE SOLVED: To automatically restrict key operations in accordance with the situation. Ž<P>SOLUTION: It is determined whether or not an operation section 112 is operated (step S10) and if the operation section 112 is not operated (step S10:NO), it is determined whether or not a fixed time or longer has lapsed without operating the operation section 112 (step S12). If it is determined that the fixed time or longer has lapsed without operating the operation section 112 (step S12:YES), an erroneous operation is determined and a deletion shortcut key is invalidated (step S14). It is determined whether or not an operation to validate the deletion shortcut key is performed by operating the operation section 112 thereafter (step S16) and if it is determined that the operation to validate the deletion shortcut key is performed (step S16:YES), the deletion shortcut key is validated. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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