Sony DVD Rom/DVD Video User Manual download pdf (Page 6)

WHAT’S NEW

From CD to DVD

DVD Types and Formats

A DVD consists of two halves, where each half disc

is 0.6 mm thick, holding one or two layers of informa-

tion. The DVD format provides multiple configurations

of data layers. Each layer provides additional data

capacity.

DVD, which stands for Digital Versatile

Disc, is the next generation of optical disc

storage technology. It is essentially an

optical disc that can hold video as well as

audio and computer data. This new

optical disc can reach a capacity of up to

24 times the capacity of a CD-ROM and

encompasses pre-recorded read only

discs like DVD-Video, DVD-ROM,

DVD-Audio, SACD as well as recordable

formats like DVD-R, DVD-RAM,

DVD+RW and DVD-R/W.

For movie applications, a DVD can

store full length movies in a high-quality

digital video with surround sound in

several languages and a wide range of

interactivity as well as subtitles. All DVD

players and DVD-ROM drives are

equipped with an additional laser diode or

a special lens for playback capability of

existing Audio CDs and CD-ROMs.

Format and

Specifications

The DVD standard defines a disc

that maintains the overall dimensions

of the current Compact Disc.

Therefore the backwards compatibility

with existing Audio CDs and CD-ROMs

was easier to realize. The table on the

right demonstrates similarities and

differences of CDand DVD.

Disc Type Capacity 12 cm

DVD-5 single sided, single layer 4.7 GB

DVD-9 single sided, dual layer 8.5 GB

DVD-10 double sided, single layer 9.4 GB

DVD-18 double sided, dual layer 17.1 GB

Mini DVD DVD

Disc diameter 80 mm 120 mm

Disc thickness 1.2 mm 1.2 mm

Disc structure two bonded two bonded

0.6 mm substrates 0.6 mm substrates

Laser wavelength 650/635 nm 650/635 nm

Numerical aperture 0.6 0.6

Track pitch 0.74 µm 0.74 µm

Shortest pit/land 0.4 µm 0.4 µm

lenght

Data layers up to 2 up to 4

Data capacity 1.46 GB–2.66 GB 4.7GB–17.1GB

1 2 3 4 5 6 7 8 9 10 11 ... 53 54

Comments to this Manuals

No comments

Sony DVD Rom/DVD Video User Manual Page 6

Comments to this Manuals

Related products and manuals for DVD players Sony DVD Rom/DVD Video