| 摘要 |
PROBLEM TO BE SOLVED: To settle the problem where it is hard to incorporate only the watermark information that is inherent to the client who requested transmission of a file. SOLUTION: When a client 31-i (i=1, 2, 3) designates a file to a WWW server 1 by means of a watermark information incorporation function and a file identifier, the server 1 reads out a file in response to the file identifier, incorporates the watermark information related to the client 31-i into the file by means of the designated function and supplies the file including the watermark information to the client 31-i via a network. |
