| 摘要 |
PURPOSE: A method and system for operating a P2P service is provided to prevent a user from illegally copying digital files by protecting the copy right of digital files, and by giving an opportunity for reducing a financial burden or making a profit to the user. CONSTITUTION: A user connects to a web site through the Internet network(300). The user inputs an ID and a password. A server checks whether the user is a member(301). In case that the user isn't a member, the user is registered as the member(302). Information inputted from the user is registered in a user management database(303). The user downloads a sharing program from the server(304). An identification number of the user is transmitted to a common gateway interface(305). It is judged whether the user registers a commercial file the user has or downloads a desired file through the connection to another user's computer(306). In case that the user determines to register the commercial file(307), a registration program checks whether information on the commercial file is registered in a file database(308). The commercial file is registered in the file database(309). In case of determining to download a file stored in another user's computer, the user searches the file using the sharing program(310). A searching program searches sharing directories of other users using the information inputted from the user(311). In case of finding information on the file, the searching program transmits the information to the sharing program through the Internet(312). The user connects to another user's sharing directory and downloads the file(313). The user stores the file in the server(314). The user pays the price for the file(315).
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