Abstract
A digital home network is a cluster of digital audio/visual (A/V) devices including set-top boxes, TVs, VCRs,
DVD players, and general-purpose computing devices such as personal computers. The network may receive
copyrighted digital multimedia content from a number of sources. This content may be broadcast via satellite or terrestrial systems, transmitted by cable operators, or made available as prepackaged media (e.g., a digital tape or a digital video disc). Before releasing their content for distribution, the content owners may require protection by specifying access conditions. Once the content is delivered to the consumer, it moves across home the network until it reaches its destination where it is stored or displayed. A copy protection system is needed to prevent unauthorized access to bit streams in transmission from one A/V device to another or while it is in storage on magnetic or optical media. Recently, two fundamental groups of technologies, encryption and
watermarking, have been identified for protecting copyrighted digital multimedia content. This paper is an
overview of the work done for protecting content owners’ investment in intellectual property.
Note
Proceedings of the SPIE International Conference on Security and Watermarking of Multimedia Contents II, Vol. 3971, January 23 - 28, 2000, San Jose, CA
