DVD Plus, known as DualDisc in the United States, is an optical disc storage technology that combines the technology of DVD and CD in one disc. A DVD and the CD layer are bonded together to provide a multi-format hybrid disc.

DVD Plus is currently available in three formats:

1) CD / DVD
2) CD / DVD Audio©
3) DVD / ROM

It will eventually be possible to produce the DVD Plus with upcoming formats, such as HD-DVD.
All DVD Plus formats can be played both on conventional CD players, on DVD players and on the computer (the format is compatible with approximately 99% of the players on the market).

There has been some controversy (See MSNBC article) surrounding the DVD Plus format as of late, as United States record labels have attempted to roll out its DualDisc format with a specification that the creators of DVD Plus claim is in violation of its essential patents.

In December 2004, Sony DADC signed a global license agreement [1]with DVD Plus International, the makers of DVD Plus.

References

• DualDisc rollout challenged by Euro Patent holder
• 'DualDisc' headaches for record industry