Digital Media Copy Protection - HP Media Center m7000 - Desktop PC Reference Manual

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Digital music and
video providers may
have playback
restrictions for
downloaded
media files.
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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.
104
HP Media Center PC Reference Guide

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.
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 Source
Copy freely NTSC
Reserved NTSC
Copy once NTSC
Copy never NTSC
*CGMS is Copy Generation Management System and Redistribution Control
Macrovision
Signal Method Source
Null Any
Detected Any
For more detailed information about digital rights
management, you can go to:
http://www.microsoft.com
Record Encrypt
Yes No
Yes No
Yes Yes
Yes Yes
Record Encrypt
Yes No
Yes Yes
Playback
Unlimited
Unlimited
Unlimited
48 hours
Playback
Unlimited
48 hours