Cd-R/Cd-Rw Data Configurations; Dvd-R/-Rw Data Configurations - Toshiba SD-R6112 Product Specification

5.1.3. CD-R / CD-RW Data Configurations
Before writing
CD-R / CD-RW disc contains time-code information called ATIP.
ATIP is abbreviation of "Absolute Time In Pre-groove" in the wobbling groove by modulating
the carrier frequency.
(Address information is pre-formatted to ATIP on the CD-R / CD-RW disc and method for the
guide groove to wobble by FM modulation.)
Figure 9 shows the composition of ATIP.
(n-1)
Address
n
Address
n+1
Address
n+2
Address
Figure 9 CD-R / CD-RW Disc ATIP Data Configuration
After Writing
Data are written in CD format synchronizing with ATIP.

5.1.4. DVD-R/-RW Data Configurations

Before writing
DVD-R / -RW disc contains ECC block address embossed as the pre-pit information on the land.
The ECC block address is the absolute physical of the track., and corresponds to 16 sector, equal in
size to 1 ECC block to be recorded in the groove.
Figure 10 shows the ECC block address stricture.
ECC block address
(N)
16 bytes
ECC block address
(N+1)
16 bytes
ECC block address
(N+2)
16 bytes
Figure 10 ECC block address structure of DVD-R/-RW disc
After writing
The data is written in DVD-ROM format synchronizing with ECC block address.
Synchronization (4 bit)
Min (8 bit)
Sec (8 bit)
Frame (8 bit)
CRC (14 bit)
ECC block address
(3 bytes)
Parity A
(3 bytes)
Field ID
(1 bytes)
Disc information or ECC block
address
(6 bytes)
Parity B
(3 bytes)
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SD-R6112 Rev.1.0