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Home > Hardware Reviews > Optical Storage > DVD Recorders Double Layer

Tuesday, April 25, 2006
SONY DW-G120A

5. Protected Discs

At this point, we will check the drive's ability to read and backup protected CDs.

- AudioCD protections

For the test procedure we used three audio discs with different audio copy protections. The ripping process on all protected Audio discs was carried out with Exact Audio Copy v0.9 beta5.

The protected Audio discs tested, were:

Audio Discs Protection
Celine Dion - New Day Has Come Sony's Key2Audio
Natalie Imbruglia - White Lilies Island Cactus Data Shield 200
Aiko Katsukino - The Love Letter Cactus Data Shield 200.0.4 - 3.0 build 16a

The Cactus Data Shield 200, contains artificial errors that are not easily bypassed by the reader, while the Key2Audio contains a second session causing problems to readers when trying to read the Table Of Contents (TOC).

The tested tasks are:

- Recognition of the inserted disc (Yes/No).

- Ripping all wav files(with EAC's Burst Mode) to the hard disk through copy&compare function.

- Listening to the produced wav files to detect any possible click/skips.

The drive recognized up to the 12th Audio track in the CDS200 disc,

and with the "Retrieve Native TOC" option removed, the drive recognized the 13th track.

The test results are shown in the following table:

Sony DW-G120A Key2Audio CDS200
Ripping process completed, EAC reports no problems, Read&Test CRC comparison successful for all tracks Ripping process completed, EAC reports no problems, Read&Test CRC comparison successful for all tracks

Sony DW-G120A can read/rip all of the above AudioCD protection schemes without problems.

- Cactus Data Shield 200.0.4 - 3.0 build 16a (Aiko Katsukino - The Love Letter)

This is a "special" CDS200 build, since it doesn't contain any artificial errors which create problems during the ripping process. Most problems occur when trying to write the ripped wav files, since the produced CD-R disc contains C2 and CU errors! This "problem" is rumored to be connected to specific chipset weaknesses.

Sony DW-G120A CDS 200.0.4 - 3.0 build 16a
Reading performed without any errors.

- Games Protections

To create the image of the various protected titles on the hard disk, we used Alcohol 120% software and the appropriate settings, in accordance with the protection type of the inserted discs. Below you can see the duration of each process as well as the transfer rate in each case.

With the SecuROM protected media, the Sony DW-G120A drive performed quite well, achieving good ripping times. SafeDisc and PSX however proved a difficult protection schemes for the Sony drive. Nevertheless, the Sony ripped both protected media without problems, although at low ripping speeds, especially in comparison to the Plextor drive.

- Writing Tests

The Sony DW-G120A supports the DAO-RAW writing mode. To check the drive's EFM correction status, we used 5 different game titles with different SafeDisc 2 versions, having the latest software patches installed. After making the images of the various titles onto the hard disk, we burned them (at maximum speed) with Alcohol 120% v1.9.2.3105. Two different discs were recorded for each title; one with the "Rectify Sub-Channel Data" enabled and one with the function disabled.

- Quake 4 SafeDisc v4.6

- Fifa 2004 - SafeDisc v3.1x

The drive failed to create working backups of the above protected games.




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