DISTRIBUTION OF ELECTRONIC DATA FILE, DOWNLOAD OF THE FILE AND BUSINESS MODEL USING THE FILE

摘要

PROBLEM TO BE SOLVED: To provide an electronic data file with an automatically erasing function and a business model to be executed by using the data file.;SOLUTION: An electronic data file header part 201 is a file header part including the dates, file names, data size, etc., of succeeding data files and an electronic data file data part 202 is a data part for video and music data, etc. An electronic data file erasing program data part 203 is an application program data part having a function for automatically erasing the data part 202.;COPYRIGHT: (C)2003,JPO