Dvd Media Technology - Sony Handycam DCR-DVD100 Technology Handbook

DVD MEDIA TECHNOLOGY

Although a 12cm (4-3/4") DVD is the same size as a standard CD, its high-density format allows
more than 7 times more data to be recorded on a single disc.
The Basic Structure of a DVD
DVD consists of a dual-layered disc 12cm (4-3/4") or 8cm (3-1/8") in diameter. Each layer has a thickness of 0.6mm
(1/32").
Various kinds of DVD suit the needs of various applications, such as DVD-ROM (for playback only), DVD-R (for one-
time recording), and DVD-RW (for rewritable recording).
6 6
D V D H a n d y c a m T E C H N O L O G Y H A N D B O O K
Structure of DVD-ROM
Protection Layer
Record Layer
Base