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Types and features of recordable DVD media

DVD? What is it?

The need for higher-capacity recordable media have been dramatically increasing to record BS digital broadcasting programs, edit images recorded with digital video cameras, back up hard disk drives and store high-capacity contents. Against the background as such, it is expected that a DVD (Digital Versatile Disc) provides you with applications in a wider range of use and field thank to its superior performance as well as its high capacity of 4.7GB (normal size on a single side), which is about 7 times the capacity of a CD. Furthermore, the DVD may be used with higher-performance and more multifunctional drives and recorders, and united with hard disk drives, which will lead to the further expansion of the DVD market.

Let us introduce the types and features of each format of DVD recordable media.


Types and features of DVD recordable media

DVD-R (Write-once type)
 Standardized by "DVD Forum"
 One-time recording
 Using organic dye material in the recording layer makes it possible to play back the recorded data with a laser.
 The media has 2 formats, "for General (consumer use)" and "for Authoring (professional use)", using lasers in different wave-length for recording. The copy-protected function is added to the former format.


DVD-RW (Rewritable type)
 Standardized by "DVD Forum"
 Rewritable about 1,000 times
 The phase change recording material is adopted.
  Using amorphous material in the recording layer makes it possible to record and play back data with a laser.


DVD+R (Write-once type)
 Standardized by "DVD+RW Alliance"
 One-time recording
 Using organic dye material in the recording layer makes it possible to play back the recorded data with a laser.
 Provided with the lossless linking function capable of recording data seamlessly


DVD+RW (Rewritable type)
 Standardized by "DVD+RW Alliance"
 Rewritable about 1,000 times
 The phase change recording material is adopted.
  Using amorphous material in the recording layer makes it possible to record and play back data with a laser.
 Provided with the lossless linking function capable of recording data seamlessly