What is HD DVD
HD DVD (High Density Digital Versatile Disc) is a digital optical media format which is being developed as one standard for high-definition DVD. HD DVD is similar to the competing Blu-ray Disc, which also uses the same CD sized (120 mm diameter) optical data storage media and 405 nm wavelength blue laser. HD DVD is promoted by Toshiba, NEC, Sanyo, and most recently Microsoft, Intel, and is backed by four major studios: New Line Cinema, Paramount Pictures, Universal Studios and Warner Bros.. Overview With the demand for high-definition TVs taking off consumers increasingly expect greater realism and better image quality in visual entertainment. The goal of HD DVD is to deliver that realism via DVD. According to HD DVD supporters it is the future, a new standard for next-generation optical systems that delivers brilliant, high-definition performance. How it all started: The DVD Forum develops and defines DVD formats.
A6. HD DVD shares the 12cm diameter and 1.2mm thickness of the current generation of DVD discs, yet is able to deliver eight hours of High Definition video on a dual-layer, single-sided disc. Enhanced interactivity, multi-media functions, secure AACS content protection and the capacity to store ten thousand average MP3 tracks on one disc means that the HD DVD format matches the real-world needs of todays consumer market. For the IT industry, a double-sided HD DVD-R disc can hold up to 30GBytes of data. For replicators, there is the reassurance that todays DVDs can be produced on tomorrows HD DVD lines. Todays DVD is a widely accepted and very reliable data storage and delivery system. The 1.2mm thick disc has the data placed in the middle of a protective outer layer of transparent plastic. HD DVD has built on this tried and trusted format by adopting the same physical disc parameters.
