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Home > Hardware Reviews > Optical Storage

Tuesday, August 24, 2010
LiteOn iHBS112 review

4. Reading of damaged DVDs

In the following tests, we examine the DVD reading capabilities of the drive (error correction) with scratched / defective DVD media. For the tests, we used CDVD Benchmark and Nero Disc Speed. The reference test media comes from ALMEDIO.

- Single Layer media

ABEX TDR-821

This is a single sided, single layer DVD-ROM with a 4.7GB capacity, and its surface has an artificial scratch of dimensions varying from 0.4 to 3.0 mm.

 

LiteOn iHBS112
Sony BWU-300S
Pioneer BDR-203BK
Read errors
No, but speed slowdowns
No, but speed slowdown in the beginning
No

The graph shows us some speed fluctuations, meaning that the drive had some difficulties in the reading process. No read errors were reported.

ABEX TDR-825

This is also a single sided, single layer DVD-ROM of 4.7GB capacity. The data structure of the disc is exactly the same as that of the TDR-821, with the difference that there are no scratches on it but instead, defective areas of dimensions ranging from 0.5 to 1.1 mm. There are also fingerprints sized between 65 and 75 micrometers.

 

 

LiteOn iHBS112
Sony BWU-300S
Pioneer BDR-203BK
Read errors
No
No
No

A successful read here.

- Dual Layer media

ABEX TDR-841

This is an 8.5GB dual layer, single sided DVD-ROM disc with artificial scratches of dimensions ranging from 0.4 to 3.0mm, on both layers.

LiteOn iHBS112
Sony BWU-300S
Pioneer BDR-203BK
Read errors
No, but speed slowdowns in layer 0
No
No

Same as before, successful reading with a few fluctuations at the first layer.

ABEX TDR-845

The disc is a single sided, dual layer DVD-ROM disc with a capacity of 8.5GB. The only difference between the TDR-845 and the TDR-841 is that the first includes defective areas and fingerprints.

 

LiteOn iHBS112
Sony BWU-300S
Pioneer BDR-203BK
Read errors
No
No
No

 

ABEX TDV-545

The TDV-545 disc is based on the TDV-540 series. It is a single sided, dual layer DVD-VIDEO disc with a capacity of 8.5GB.The TDV-545 includes artificial black dots on the data surface, sized from 0.4 to 1.0 mm. It also has 65 - 75 micrometer fingerprints.

LiteOn iHBS112
Sony BWU-300S
Pioneer BDR-203BK
Read errors
No
No
No

Flawless reading here.

Summary

Overall, the DVD error correction mechanisms are adequate, although they could be improved , especially when the drive reads heavily scratched DVDs.




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