Image Processing Reference
In-Depth Information
This is already being addressed within TV production systems. The BBC news
organization has a system that manages the usage rights on footage received from other
providers. This becomes very complicated with territorial issues; number of plays permit-
ted; and whether the usage is internal, external for a limited audience, or available to the
public at large.
Peer-to-Peer Sharing
The whole peer-to-peer file-sharing issue has been brought into disrepute by the use of
sharing as a way to steal music files and redistribute them without authorization. People
should be made aware that this is illegal and contravenes the copyright ownerships of the
material being shared.
Peer-to-peer sharing has some significant benefits. It can significantly reduce the bur-
den on a service provider because fewer copies need to be delivered from a central server.
However, access control is much more complex.
Allowing the media to be copied but encrypting it such that those copies will not
play without authorization might be a solution.
Encryption and Access-Control Techniques
The first step in combating the casual use of your content is to decide what kind of pro-
tection you need. There are a lot of choices and deciding how to boundary limit that con-
trol is a necessary first step. Of course, having a working control system in the first place
is important, too.
Open Access
Maybe you don't need to provide any protection at all. The BBC has taken the step of
broadcasting in the clear on the digital terrestrial and satellite services in the United
Kingdom. BBC content being broadcast by other TV companies elsewhere in the world
may not be as freely available. Such rights may apply only for a certain time frame and
while end users might video record the program off air, they most certainly don't have the
right to redistribute that copy in any way whatsoever.
Geographical Access
The funding of the BBC-provided services is a main factor in determining their availabil-
ity to various geographically organized audiences. BBC license fee-funded broadcasts are
supposed to be viewed only inside the United Kingdom, and BBC broadcasts funded from
other sources are supposed to be seen only outside of the country.
As it turns out, the BBC is extremely popular with viewers in continental Europe,
especially in Holland, France, Belgium, and Denmark. In the coastal regions nearest to the
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