Information; About Dvds - Alpine PKG-1000 Owner's Manual

Information

About DVDs

Music CDs and DVDs have grooves (tracks) in which the
digital data is recorded. The data is represented as
microscopic pits recorded into the track – these pits are read
by a laser beam to play the disc. On DVDs, the density of the
tracks and pits is twice that of CDs, so DVDs can contain more
data in less space.
CDs
Minimum pit
length -
1.2 mm
0.9 µm
DVDs
Minimum pit
length -
0.6 mm
0.9 µm
0.6 mm
A 12 cm disc can contain one movie or about four hours of music.
In addition, DVDs provide sharp picture quality with vivid colors
thanks to a horizontal resolution of over 500 lines (compared to less
than 300 for VHS tape). With the addition of an optional, digital
audio processor (PXA-H900, PXA-H510, PXA-H701, etc.), you can
recreate the power and presence of a movie theater with Dolby Digital
5.1-channel Surround.
In addition, DVDs offer a variety of functions.
• Multi story function*
With this function, a single movie includes various story
lines. You can select different story lines to view various
versions of the same movie.
Operation differs from disc to disc. Story line selection
screens including instructions appear during the movie.
Just follow the instructions.
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-EN
DVE-5207.indb 20
Track pitch
- 1.6 µm
Track pitch
- 0.74 µm
4/14/05 5:34:10 PM