High Definition Facts

High Definition Facts

If you follow tech news, you’ve probably heard about High Definition movies and the two competing "shiny disc" formats -- HD DVD and Blu-ray -- and the new copy-protection system, AACS. Unfortunately there is a lot of misinformation out there about these technologies, probably because the facts change over time and the press essentially plays a game of telephone with each story repeating "facts" found in an earlier story.

Whilst this post won’t go into great details about either of the disc formats, it will talk about a few key things they both have in common. Thanks to other members of the HD DVD team here at Microsoft for providing some of the more esoteric information :-)

Maximum Resolution

Copy Protection

Down-Rezing

Digital Only Token

Extra Geeky Info