COPYRIGHT INFORMATION PRESENTATION DEVICE, COPYRIGHT INFORMATION PRESENTATION PROGRAM, AND COPYRIGHT INFORMATION DISPLAY PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide an environment which can present copyright information of a digital content to a user independently of platform or throughput of the user terminal.SOLUTION: In response to an operation by a user, a browser 262 on a user terminal 2 transmits graphic data in which copyright information is digitally watermarked to a graphic copyright management server 3. Then, a viewer server 342 extracts copyright information by decrypting the digital watermark in the received graphic data, and returns the extracted copyright information to the user terminal 2.