Outline of Physical Format of DVD-R for Dual Layer

Accession number;06A0822846
Title;Outline of Physical Format of DVD-R for Dual Layer
Author; KANEGAE TOORU (Pioneer Corp., JPN) KAWANO EISAKU (Pioneer Corp., JPN) MIURA MASAHIRO (Pioneer Corp., JPN) OMORI KYUSHO (Pioneer Corp., JPN) KATO MASAHIRO (Pioneer Corp., JPN)
Journal Title;Pioneer R&D
Journal Code:L0992B
ISSN:1346-7468
VOL.16;NO.2;PAGE.25-33(2006)
Figure&Table&Reference;FIG.21, REF.1
Pub. Country;Japan
Language;Japanese
Abstract;When the second layer (Layer 1) of a DVD-R for Dual Layer disc is recorded, the LASER beam passes through the first layer (Layer 0). In this case, the transparency difference of Layer 0 which comes from its recording status (recorded or unrecorded) considerably affects to the signal reliability of the recorded signal on Layer 1. To avoid this, we have developed and introduced the new technical regulation that is called "Relative deviation" to the specification. The Relative deviation specifies the possible allocation range of the corresponding physical address on each layer. The Relative deviation is applied to design a disc so that the recorder can record data easily without complicated operation. We have also developed the verification method of the Relative deviation with simple measurement. It has been also adopted in the "DVD-R for Dual Layer book version 3.0 part 1 (physical specification)" book. (author abst.)