HP Media Center m7000 Microsoft Windows XP Media Center Edition 2005 Reference - Page 110

n Digital music and video providers may have playback restrictions for downloaded media files. Digital Media Copy Protection Digital media content such as DVDs or TV programs may have restricted access depending on the terms of the copyright owner. This protects copyrighted media files from being illegally copied and used. When you record certain music or video files, they may retain copy protection such as digital rights management (DRM). DRM encrypts digital media content and limits access to people who have a license to play the content. For more detailed information about digital rights management, you can go to: http://www.microsoft.com n HP supports lawful use of technology and does not endorse or encourage the use of our products for purposes other than those permitted by copyright law. Copy protection for DVD movies Most DVD movies in the market are encrypted with copy protection to prevent illegal duplication of copyrighted material. This protection distorts the picture quality when copied or prevents it from being copied. The following tables shows two of the currently used copy protection methods and their effect on playback. CGMS* Signal Method Copy freely Reserved Copy once Copy never Source NTSC NTSC NTSC NTSC Record Yes Yes Yes Yes *CGMS is Copy Generation Management System and Redistribution Control Encrypt No No Yes Yes Macrovision Signal Method Null Detected Source Any Any Record Yes Yes Encrypt No Yes Playback Unlimited Unlimited Unlimited 48 hours Playback Unlimited 48 hours 104 HP Media Center PC Reference Guide