Alpine IVA-D900 owner manual Information, About DVDs, 57-EN

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.

In addition, DVDs offer a variety of functions.

• Multiple audio* (page 18)

Movies can be recorded in up to eight languages. The

desired language can be selected from the remote control

unit.

• Subtitles function* (page 19)

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 18)

When the DVD contains a movie shot from multiple angles,

the desired angle can be selected from the remote control

unit.

CDs

Minimum pit
length -	1.2 mm
0.9 µm

Track pitch - 1.6 µm

• 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.

*The functions audio languages, subtitle languages, angles, etc., differ from disc to disc. For details, refer to the disc’s instructions.

DVDs

Minimum pit
length -	0.6 mm	Track pitch -
0.9 µm
	0.6 mm	0.74 µm

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.

57-EN