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Monday, September 20, 2010
Samsung SH-B123L review

5. Reading of defected DVDs

In the following tests, we examine the DVD reading capabilities of the drive with scratched / defective DVD media (error correction). For the tests, we used Nero CDVDBenchmark and the ABEX series of DVD test discs by ALMEDIO.

- Single Layer media


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.


The reading process was completed successfully and the defects on the disc's surface did not slow down reading.


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.



No reading problems here.

- Dual Layer media


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.



This time the drive could not read the disc and returned a read error (red dot on the graph).


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.

Both layers of the disc was read flawlessly.


The TDV-541 is a single sided, dual layer DVD-VIDEO disc, with a capacity of 8.5GB.The disc is based upon the TDV-540 series which is designed for inspection and adjustment of DVD-VIDEO players. The disc checks the layer switch operation from layer 0 to layer 1 and also includes test pictures and test signals for DVD sound files.


The drive returned a read error before the end of L0 of the disc.


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.

Flawless reading here for both layers.


Overall, the DVD error correction mechanism of the Samsung drive is average. The drive had problems reading the scratched DVD Video disc (ABEX TDV-541) as well as the dual layer DVD-ROM (ABEX TDR-841).

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