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An environment in which digital broadcasting can be viewed with trust established between the broadcaster and viewer requires a technology to prevent unauthorized use or tampering with program content. While a broadcasting system based on home servers will offer a wide range of TV viewing styles by using metadata, it also necessitates a mechanism for content usage control as designated by the broadcaster.
An advanced CAS* that performs viewing control and content rights protection solves these problems.
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- With a single CAS card, our CAS achieves low-cost rights protection as well as viewing control for program content distributed via a communications network and stored in a home network. This is in addition to protecting digital broadcasting content.
- The broadcaster can set up detailed control conditions in relation to digital content usage. The viewer can choose among diverse viewing styles under the control of the broadcaster.
- The licensing information required for viewing a program can be acquired via broadcasting or a communications network as needed. For instance, when the viewer wishes to watch expired content, he or she can obtain a license with a new expiration date.
- This technology enables a secure environment for content and metadata by preventing tampering and ensuring that only metadata approved by the broadcaster can be utilized.
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| The full implementation of integrated services television will have an advanced CAS. It will support the e-government and services of individual municipalities. |
| * CAS (Conditional Access System) |
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