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01GB06IVAW205R.fm
ALPINE IVA-W205R 68-08564Z42-A (EN)
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 colours
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-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.
Multiple audio* (page 24)
Movies can be recorded in up to eight languages. The desired
language can be selected from the unit.
Subtitles function* (page 25)
Movies can include subtitles in up to 32 languages. The desired
subtitle language can be selected from the unit.
Multi angle function* (page 24)
When the DVD contains a movie shot from multiple angles, the
desired angle can be selected from the 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.
* These functions differ from disc to disc. For details, refer to the disc’s
instructions.
Terminology
Dolby Digital
Dolby Digital is a digital audio compression technology
developed by Dolby Laboratories that allows large quantities of
audio data to be efficiently recorded on discs. It is compatible
with audio signals from mono (1 channel) all the way up to 5.1-
channel surround sound. The signals for the different channels
are completely independent, and since the sound is high quality
digital there is no loss of sound quality.
* The separately sold digital audio processor (PXA-H701, etc.) is
required to enjoy full 5.1-channel surround sound.
The IVA-W205R/IVA-W202R performs Dolby Digital decoding
when it outputs analogue audio signals, it just happens to be
2-channel audio not 5.1-channel.
Information
CDs
Minimum pit
length -
0.9 µm
1.2 mm
Track pitch -
1.6 µm
DVDs
Minimum
pit length -
0.9 µm
0.6 mm
Track pitch -
0.74 µm
0.6 mm
Centre
speaker
Front
speakers
Rear
speakers
Subwoofer
Speaker layout for enjoying
Dolby Digital sound/DTS sound
68-08564Z42-A_F.book Page 55 Wednesday, January 24, 2007 2:26 PM