HD DVD

(redirected from High-density DVD)

HD DVD

(1) See also HD DVR.

(2) (High Definition DVD) A short-lived, high-capacity optical disc that held four hours of HD video on a single-sided, single-layer 15GB disk. Sanctioned by the DVD Forum in 2003, it gave way to Blu-ray in 2008.

HD DVD was based on the Advanced Optical Disc (AOD) technology from Toshiba and NEC and used a blue-violet laser that read pits half the size of a DVD on tracks packed tighter together. Like Blu-ray, HD DVD supported 1080p resolution and advanced video codecs (see H.264 and VC-1). An advantage for media manufacturers was that, unlike Blu-ray, traditional DVD stamping machines needed only minor modifications to make HD DVDs.

The first HD DVD drives were sold in the U.S. in 2006, and Microsoft offered the drive as an Xbox option. Despite its features and support, in 2008, the majority of movie studios and retail outlets chose Blu-ray over HD DVD, and the "format war" was over.

HD DVD Formats
Used for commercial movies, HD DVD-ROMs were pressed and read only. HD DVD-Rs were recorded once by the user, and HD DVD-RWs were rewritable. Hybrid HD DVDs were announced with HD DVD on one side and DVD on the other. In an attempt to resolve competition, dual-format HD DVD/Blu-ray players were also developed (see "Blu-ray History" in Blu-ray). See HD formats, DVD and DTV.

FULL-SIZE HD DVD (120mm) CAPACITIESSINGLE SIDED     DOUBLE SIDED HD                HDLayers  Storage  Hours    Storage  HoursSingle15GB    4       30GB     8

 Dual      30GB    8

 Triple    51GB   14
References in periodicals archive ?
The red-laser contender is the high-density DVD (HD-DVD), which has the same structure as a traditional DVD.
All you need to do is hum a bit of the tune, and the system pulls it up for you from a high-density DVD that can hold thousands of songs.
It hinges on how manufacturers market the next generation of high-density DVD and how long it takes producers to agree on a standard for that format.
914-945-6000), recently demonstrated a blue-green semiconductor laser, operating at a 520-nm wavelength, to read data stored on a high-density DVD optical disk.
However, in 2003 the long-anticipated market for blue-violet (405 nm) laser diodes in optical storage has finally begun in earnest, as several companies announced the first shipments of the next generation of high-density DVD recorders.
HD DVD backers are reeling at the world's top consumer electronics show in the wake of a major blow from rival Blu-Ray in the battle to be the reigning format for high-density DVDs.
A simple rip on a minimum of 50 CDs starts at $89, and content is delivered on high-density DVDs.
A Sony spokesman said his company will only have to make minor modifications to existing CD production equipment to manufacture high-density DVDs.
The lab will support the company's efforts to replace polycarbonate with acrylic as the material for new generations of high-density DVDs.

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