Content Protection

  • 项目

The DVD standard allows for two types of content protection. First, there is the Content Scrambling System (CSS). This is the data encryption process used to protect the contents of a DVD-Video disc from being copied digitally. Second, there is an analog protection system (APS). Once the player decodes the digital data stored on a DVD, the APS prevents the resulting analog video signal from being copied to videotape.

These content protection schemes are completely transparent to the DVD-Video API. All of the data and signal processing to implement these schemes takes place at a low level between the DVD drive, the DVD renderer, and internal portions of the DVD-Video API middleware that are inaccessible to the DVD-Video API interfaces.

See Also

Advanced DVD Player Application Topics

 Last updated on Thursday, April 08, 2004

© 1992-2003 Microsoft Corporation. All rights reserved.