Information; About Dvds - Alpine D900 - XM Ready DVD/CD/MP3 Receiver 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-H700), 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.
• Multiple audio* (page 18)
• Subtitles function* (page 19)
• Multi angle function* (page 18)
• Multi story function*
Track pitch -
1.6 µm
* The functions audio languages, subtitle languages, angles, etc.,
Track pitch -
0.74 µm
Movies can be recorded in up to eight languages. The
desired language can be selected from the remote control
unit.
Movies can include subtitles in up to 32 languages. The
desired subtitle language can be selected from the remote
control unit.
When the DVD contains a movie shot from multiple angles,
the desired angle can be selected from the remote control
unit.
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.
differ from disc to disc. For details, refer to the disc's instructions.
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