HD DVD: An Advanced Optical Disc
HD DVD stands for High Definition Digital Versatile Disc, is a format of a high-capacity optical disc that holds data and high-definition video three times more than a single DVD (15 GB in a single layer vs. 4.7 GB) and quality display images six times better than standard DVD.
HD DVDs are the improvement of its predecessor DVD. Maximizing the quality of DVD for display on High Definition Television (HDTV) is one of the reasons that the electronics and media manufacturers have introduced the probabilities of upscaling the DVDs. Upscaling is a mathematical process that is used to match the Pixel Count of the DVD output to the pixel count of the High-Def Television (HDTV) for a better display resolution and color consistency of an image.
The Application of Blue Laser Technology (has a shorter wavelength in comparison with the Red Laser Technology used in a standard DVDs) enables the HD DVDs to have a larger storage capacity than DVD.
HD DVD supports file systems such as ISO 9660 and Universal Disc Format. It also supports both recording and playback of high definition video and audio resources. HD DVDs are compatible with MPEG2, MPEG4 Encoding and VC-1 or Windows Media Compression.
