Page 1:Double-Layer Recordable DVD's Place In History
Page 2:Double-layer: The Latest Technology
Page 3:How Does It Work?
Page 4:BenQ DW-1600A
Page 5:LG GSA-4120B
Page 6:Lite-On SOHW-832S
Page 7:Test Configuration
Page 8:CD Read Tests
Page 9:Single-layer DVD Read Tests
Page 10:Double Layer DVD Read Tests
Page 11:CD-R Burning Tests
Page 12:CD-RW Writing Tests
Page 13:Single Layer DVD Writing Test
Page 14:Double Layer DVD Writing Test
Page 15:DVD-RW And DVD+RW Burning Tests
Double-layer: The Latest Technology
Just as with improvements in speed, it is the format "+" that comes out the winner. That is mainly due to the number of manufacturers involved in the DVD+RW alliance. Thus, Pioneer has been almost alone in creating the products and requiring validation from the DVD Forum. In the meantime, all those who were working on improving the DVD+RW format have been taking an active part in validating the norms. Thus, for the moment, only discs that can be recorded a single time (+R) can benefit from double-layer (DL) technology. Burners that are capable of burning a double layer carry the following logos.
How Does It Work?
The true challenge for the research engineers was to create a recordable double-layer disc that was as close as possible to pressed double-layer discs to achieve compatibility.
Like the CD, the DVD is 1.2 mm thick. But if the CD consists of a single block, the DVD consists of two discs 0.6 mm thick, stuck together. To produce these discs, several successive layers are arranged according to the following diagram:
- Double-Layer Recordable DVD's Place In History
- Double-layer: The Latest Technology
- How Does It Work?
- BenQ DW-1600A
- LG GSA-4120B
- Lite-On SOHW-832S
- Test Configuration
- CD Read Tests
- Single-layer DVD Read Tests
- Double Layer DVD Read Tests
- CD-R Burning Tests
- CD-RW Writing Tests
- Single Layer DVD Writing Test
- Double Layer DVD Writing Test
- DVD-RW And DVD+RW Burning Tests