Information Technology Reference
In-Depth Information
Fig. 12.3
Information
capsule
12.3
Information Capsule for the Copyright Management
The information capsule, shown in Fig.
12.3
, is a framework that circulates digital
contents such as music, movies, and books (Kinoshita and Morizumi
2008
). It can
be used to control the access to the contained information and negotiate the content
usage conditions with other agents.
To control and protect the private information, the following functions are
required in the system.
1. The person related to the private information can restrict the purpose of infor-
mation usage.
2. The person can check the validity of this purpose.
3. The person can check the integrity of distributed information.
4. The person can change the purpose of the use of distributed information.
5. The person can update or delete the distributed information.
In particular, we require the DRM system to function as follows.
1. The owner who holds the copyright can set the conditions for information usage.
2. The identity of distributed information should be assured.
3. The owner can check the validity of information usage at the user's site.
4. The owner can change the conditions for the use of information
5. The owner can update the distributed information.
Each function of the DRM system can also be used for the function of private
information control system. Therefore, we can install the private information
control system on the DRM system.
The additional conditions are required to manage the secondary use of contents.
1. If a user wish to be a secondary author of contents in the secondary use, the user
can negotiate with the original authors. Then copyrights are resolved between
original authors and secondary author based on recorded policies with the
contents. Next, new copyrights policies are recorded.
2. If the original contents are secondary contents the processes should be executed
recursively.
