The method of forbidding unauthorized electronic contents uses by invalidating links.
Original Publication Date: 2005-Jan-06
Included in the Prior Art Database: 2005-Jan-06
Disclosed is a method for copyright protection of electronic contents. When clients request electronic contents linked to contents put in metadata for copyright protection, servers respond them after invalidating the links. This prohibits third parties from illegally using them on another machines.
The method of forbidding unauthorized electronic contents uses by invalidating links .
This method consists of additioning metadata to original electronic contents and invalidating links to illegally copied contents.
Metadata are kind of marks to assure originalities of electronic contents. They are put in original electronic contents by server when the contents are downloaded. Invalidating links means to override links from another content (e.g. HTML) to not original contents and respond to clients, it follows that clients receive dead link responses. Server's behavior are divided into two actions according to whether contents linked from another include metadata described above.
(1) Not include metadata
When clients request the original content "A", the server creates a new content "A'" that is equal to "A" put in metadata for copyright protection, and send it to the clients. When clients request the content "B" linked to "A", the server normally responds to the clients.
(2) Include metadata
When clients request the not original content "C" illegally uploaded on the server, the server sends it to the clients as it is.
Clients request the content "D" linked to "C", the server creates a response in which links to "C" are invalidated, and sends it to the clients.
As a result, this method prevents other contents(e.g. HTML) from referring to illegally uploaded contents on servers. Therefore, even though third parties download original contents and upload them on ano...