| 摘要 |
PURPOSE: A digital file reproduction method is provided to executes the digital file with comparison of an eigen number of a digital file and an eigen number of a currently operating device. CONSTITUTION: A digital file execution unit reads out eigen information of an effective device. If an eigen number of an operating device is matched with eigen number of an effective device, the digital file execution unit executes the digital file. If the eigen number of the operating device is not matched with the eigen number of the effective device, the digital file execution unit displays information about not performing the digital file. [Reference numerals] (AA) Operating a digital file in a device; (BB) Reading identification information of an effective device from a digital file; (CC) Case of Y matching; (DD) Case of N non-matching; (EE) Executing a digital file; (FF) Showing information which is unable to execute a digital file
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