Patent ID: 7085397

Claim:
An unfair contents appropriation detection system comprising: a contents offerer terminal offering contents; a contents appropriator terminal obtaining and appropriating the contents offered by said contents offerer terminal; a contents browser terminal obtaining and browsing the contents offered by said contents offerer terminal and/or the contents appropriated by said contents appropriator terminal and transmitting a predetermined alarm information when obtaining the contents appropriated by said contents appropriator terminal, wherein a digital water mark for obtaining changed area information of the contents is embedded in the contents obtained by said contents browser terminal; and a watcher terminal detecting the contents appropriation executed by said contents appropriator terminal based on the predetermined alarm information transmitted from said contents browser terminal, and if the appropriated contents are unfairly changed, sending a report to said contents offerer terminal, wherein if said contents browser terminal obtains the contents appropriated by said contents appropriator terminal, a contents appropriation detection program incorporated into the appropriated contents transmits the predetermined alarm information, wherein the changed area information identifies a location of a change in the contents to said watcher terminal, said contents appropriation detection program having the function of verifying the digital water mark and including the changed area information of the contents in said alarm information.