Watermarks set for mobile television

 

New security measures will protect television shows from being shown on the internet before they are aired on television.

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Watermarks have historically prevented written documents from forgery, but today watermarks are used to protect television programmes from being released on the internet before premiered on television. Electronic watermarks could also be used to locate leaks.
 
As people use their mobile phones more interactively than their television sets or radios, programme makers intend to provide interactive content in addition to simple viewing on mobile television.
 
An external service is set to process the television content and incorporate additional information for this purpose.
 
Furthermore, special protection is needed to ensure that programmes will not be published on the Internet before their official TV premieres.

porTiVity in action

In the porTiVity project, the Fraunhofer Institute for Secure Information Technology SIT, in Germany, has developed just such a form of protection: a robust video watermark that permanently labels TV material without hindering the processing work. If such a protected program appears prematurely on the Internet, the broadcasters can use the watermark to locate the leak in the production chain.
 
“We know from our experience of earlier projects that viewers who receive television via cell phone or PDA would like to become actively involved in the programs,” said Patrick Wolf of the Fraunhofer SIT.
 
The researchers in the porTiVity project are therefore developing a rich media iTV system for mobile television which allows viewers to directly select objects in the picture.
 
“During a football match, for example, viewers could click on individual players to view their goal and assist statistics,” added Wolf. “In this case, the viewer receives additional, optional content. However, programme makers can also use the additional information for interactive prize draws or edutainment formats.”
 

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