Alpine DVD/VIDEO CD/ DVA-5205E - Manual (Page 6)

6
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.
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 resolu-
tion of over 500 lines (compared to less than
300 for VHS tape). With the addition of an
optional, digital audio processor (PXA-H510),
you can recreate the power and presence of a
movie theater with Dolby Digital 5.1-channel
Surround.
Minimum bit
length
- 0.9
µ
m
1.2 mm
Track pitch -
1.6
µ
m
Minimum bit
length -
0.9
µ
m
0.6 mm
0.6 mm
Track pitch -
0.74
µ
m
CD-ROMs
DVDs
Moreover, DVDs offer a variety of functions.
• Multiple audio* (page 19)
Movies can be recorded in up to eight
languages. The desired language can be
selected from the remote control unit.
• Subtitles function* (page 20)
Movies can include subtitles in up to 32
languages. The desired subtitle language
can be selected from the remote control unit.
• Multi angle function* (page 20)
When the DVD contains a movie shot from
multiple angles, the desired angle can be
selected from the remote control unit.
• 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.
Note: * The functions audio languages, subtitle
languages, angles, etc., differ from disc to
disc. For details, refer to the disc’s
instructions.
About DVDs