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Article #1: What are dvd players

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A DVD player is a device for playing to the patent holders of the DVD
discs produced under the DVD Video technology (Sony, Philips, Toshiba and
standard. Most hardware DVD players have AOL Time Warner) as well as for MPEG-2
to be connected to a television set; licenses. To avoid these fees, China has
there are also some small portable developed the EVD standard as an intended
devices which have an LCD screen successor of DVD; as of 2004, EVD players
attached. A DVD player has to complete were only being sold in China.
these tasks: Software DVD players are programs that
Read a DVD disc in ISO - UDF version 1.2 allow users to view DVD videos on a
format computer with a DVD-ROM drive. Some
optionally decrypt the data with either examples are the VLC media player and
CSS and/or Macrovision MPlayer (both free software), as well as
decode the MPEG-2 video stream with a WinDVD, PowerDVD and DVD Player. [1].
maximum of 10 Mbit/s (peak) or 8 Mbit/s Successors
(continuous) There are two successors to the DVD
decode sound in MP2, PCM or AC-3 format player: the HD DVD player and the Blu-ray
and output (with optional AC-3 to stereo Disc player. Neither format is dominant
downsampling) on stereo connector, over the other in terms of consumer
optical or electric digital connector adoption as of January 2007.
output a video signal, either an analog Portable DVD Player (commonly abbreviated
one (in PAL, SECAM or NTSC format) on the as P.D.P.'s) is the name given to any
composite, s-video, or component video portable device that plays DVDs. Most
connectors, or a digital one on the DVI PDPs have an LCD screen attached to them.
or HDMI connectors The most common PDP screen size is 7",
Most DVD players also allow users to play although some are as large as 12".
audio CDs (CDDA, MP3, etc.) and Video CDs Price Range
(VCD) and include a home cinema decoder Prices of portable DVD players vary
(i.e. Dolby Digital, Digital Theatre depending on the screen. They usually
Systems (DTS)). Some newer devices also retail for about $80-200 USD. It was
play videos in the MPEG-4 ASP video invented so that people could bring it
compression format (such as DivX) popular anywhere they go with out a fuss.
on the Internet. Screen Quality
As of 2005, retail prices for such a The biggest complaint users have is the
device, depending on its optional current video quality of the LCD screens.
features (such as digital sound or video Many believe new technologies are being
output), start between 30 and 80 USD developed including portable HD-DVD
euros. They are usually cheaper than players and portable Blu-Ray players that
VCRs. would have High Definition screens
By far the largest producer of DVD attached to them. The biggest challenge
players is China; in 2002 they produced is to put the same High-Def quality
30 million players, more than 70% of the images one could find on a 50" screen
world output. These producers have to pay onto a smaller screen.
about US$20 per player in license fees,






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